AD-A56 331 PROCEDURE FOR EDITING THE FLUXRTE MRGNETOETER DATA

OF L/ITHE AFGL (AIR FOR..(U) WESTON OBSERVATORY MAA J PABOOJIRN 36 OCT 84 AFGL-TR-84-0275

DNCL ASIFIED F9628--82-K-66F/G 9/2 NL

MENOMEEEEIMOhmmEhhhhlEn 1h 1hmMEOM."'N

111.0 jjw*28 M28IL,1111

la, 4 12.0

IIIJIL25I~n~

MICROCOPY RESOLUTION TEST CHARTNATIONAL BUREAU OF STANDARDS- I963-A

AFCL-TR--84-027 5

PROCEDURE FOR EDITING THE FUXGATEMAGNETOMETER DATA OF THE AFQ.. MAGNETOMETER NETWORK

Armand J. Pabooj ian

If) Weston observatory .. ~Dept. of Geology and Geophysics

S Boston College Lo381 Concord RoadWeston, MA 02193

October 1.984

Scientific Report No. 1

Approved for public release; distribution unlimitedI

AIR FORCE GEOPHYSICS LABORATORYAIR FORCE SYSTEMS COMMANDUNITED STATES AIR FORCEHj lANSCOM AFB, tIASSACHUSETTS T

~~JUL03 IM5

0 06 10 06~

"This technical report has been reviewed and is approved for publication"

DAVID J. KNECHT WILLIAM J. B8 --tContract Manager Branch Chief

F ceqsion For-------

DT.? TABU 1:vlouflced FOR THE COMMANDER

i fJit if iction

i, i By -

Availability Codes -".-

'Avail and/ow RITA C. SAGALYNDis Special Division Dire t r

,K. This report has been reviewed by the ESD PublLc Affairs Office (PA) and isreleasable to the National Technical Inform.cion Service (NTIS).

Qualified requestors may obtain additional copies from the DefenseTechnical Information Center. All others should apply to the NationalTechnical Information Service.

if your address has changed, or if you wish to be removed from the mailinglist, or if the addressee is no longer employed by your organization,please notify AFGL/DAA, Hanscom AFB, KA 01731. This will assist us inmaintaining a current mailing list.

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DISCLAIMER NOTICE

THIS DOCUMENT IS BEST QUALITYPRACTICABLE. THE COPY FURNISHEDTO OTIC CONTAINED A SIGNIFICANTNUMBER OF PAGES WHICH DO NOTREPRODUCE LEGIBLY.

ir ,. . ,, , - w , _ .. , , , - ,. . ,.r- L . - ,- .- -%, ., . -. -- ,,- -. -- . , . ., - - ,--l - - . .' -.. ", - - . ,.. . .. . .. ,, -- : .. . .0.

. ,, ...

UN CLASSIFIEDSECURITY CLASSIFICATION OF THIS PAGE

Unclassified REPORT DOCUMENTATION PAGEis REPORT S CURITY CLASSIFICATION lb. RESTRICTIVE MARKINGS

. SECURITY CLASSIFICATION AUTHORITY 3. DISTRIBUTIONAVAILABILITY OF REPORT

Approved for Public Release°b. OECLASSIFICATION/DOWNGRADING SCHEDULE Distribution Unlimited

4 I RFORMING ORGANIZATION REPORT NUMBER(S) 5. MONITORING ORGANIZATION REPORT NUMBER(S)

AFGL-TR-84-U275

6. NAME OF PERFORMING ORGANIZATION b. OFFICE SYMBOL 7.. NAME OF MONITORING ORGANIZATIONWeston Observatory [ (F-apph-ra )

Weston, Massachusetts 02193 Air Force GeophysiCs Laboratories6. ADDRESS tClt,. State and ZIP Code) 7b. ADDRESS (City. State and ZIP Code)

381 Concord Road Hanscom AFB, MA 01731Weston, Massachusetts 02193

So. NAME OF FUNDING/SPONSORING 8b. OFFICE SYMBOL 9. PROCUREMENT INSTRUMENT IDENTIFICATION NUMBERORGANIZATION (If applicable)

S aF19628-82-K-0040*Same as 7a ________

Sc. ADDRESS (City. State and ZIP Code) 10. SOURCE OF FUNDING NOS. _-'___-_

PROGRAM PROJECT TASK WORK UNITELEMENT NO. NO. NO. NO.

11,. TITLE flnclude Scurity Claif-cation) "Procedure for Editin 62101F 7001 08 ASthe Fluxgate Magnetometer Data of the AFGL

12 -'ERSONAL AUTHOR(S) Magnetometer Network"Armand J. Paboojian

13. TYPE OF REPORT 13b. TIME COVERED 14 DATE OF REPORT (Yr.. Mo..Day) IS. PAGE COUNT

Scientific No. 1 FROM 07L/JJ8 TOG9/28!a4 84/10/30 7416. SUPPLEMENTARY NOTATION

17. COSATI CODES IS. SUBJf CT TERMS (Con tinue on re erse if necesary and odentify by block number)

FIELD GROUP SUB. GR. Magnltograms Computer ProgramsUsagc of Special Programs, AFGL Magnetometer Network

19. ABST RA &~ntinue on reverse if necessary and identify b, block number)The procedure for producing the edited data base of the AFGL Magnetometer

Network is described in detail. The input to the procedure is the series ofarchive tapes on which the raw data from the seven network stations are record-ed; the output is several series of tapes containing the edited data from thefluxgate magnetometer only. Each series has either a one-second or aone-minute (averaged) sampling interval and is written in a tape format select-ed for compatibility with one or more sp'cific computer types used at the AirForce Geophysics Laboratory, The World Data Center, and other scientificinstitutions. Detailed instructions are given for the execution of each of thecomputer programs employed in the procedure as well as for the basic operationof the network minicomputer on which the procedure is carried out. The proce-dure is highly automated and the description provided is sufficient to permitits being carried cut by an untrained operator.

20 OISTRIBUTION/AVAILABILITY OF ABSTRACT 21. ABSTRACT SECURITY CLASSIFICATION

UNCLASSIFIED/UNLIMITED II SAME AS RPT. 0 OTIC USERS 0 UNCLASS IFIED

22& NAME OF RESPONSIBLE INDIVIDUAL 22b TELEPHONE NUMBER 22C OFFICE SYMBOL

Dr. David Knecht 61 l" 382 AF(;L/PHG

OD FORM 1473, 83 APR EDITION OF 1 JAN 73 IS OBSOLETE.

SECURITY CLASSIFICATION OF THIS PAGE

L1 -• - ' - L

ACKNOWLEDGEMENTS

I would like to thank Dr. Dave Knecht for his patience, consider-ation, and advice in the preparation of this instruction manual. Also,Fr. Devane's support during this writing is appreciated. Finally, I would

like to thank the many people who were involved in the process of editingtapes because many of the examples in this manual were provided from theirwork.

--1iiiw

- . . . . . . .-. . . . . . . . . -. . .

-. ... ° .-

7 "- 7

Table of Contents

I. GENERAL INFORMATION ON THE VARIAN 72 COMPUTER I

A. Use of this Manual I

B. Types of Commands: OPCOM and JCP 2

C. Types of Error Messages: 1030, 1000, and 1014 5

D. Checks of Computer Status: IOLIST, TSTAT, and (/) 6

E. Correcting Keyboard Entry Errors: (\) and Rub-out Key 15

F. V72 Front Panel: Sign Switch and Sense Switches 16

G. Rebooting The System 19

II. EDITING MAGNETOMETER NETWORK DATA 20

A. Description of Steps for Editing Magnetometer Data 20

B. WA5 PROGRAM (Basic Ediring) 22

C. CV2 PROGRAM (Creates an LM tape from an IS rape) 36

D. IMP PROGRA M (Attempts to salvage an IM tape) 38

E. IMC PROGRAM (Checks missing data points and date on IM tape) 40

F. CMB PROGRA0M (Writes RM tape by combining IM tapes) 43

G. RGN PROGRAM (Writes RM tape from IS tapes) 48

H. TCY PROGRAM (Writes a copy of various types of tapes) 54

I. PM PROGRAM (Checks RM tape and/or writes CM tape) 58

J. PS PROGRAM (Checks IS tape and/or writes FS tape) 65

V

iil .>. .

. . . . . . ., .. . . . . . . . . . . . . . . . . . . . , .- . . • . • . .°. o ' .°. -

I. GENERAL INFORMATION ON THE VARIAN 72 COMPUTER

I.A Use of this Manual

This manual is divided into two sections. The first is an introduc-tion to the use of the Varian 72 (V72) computer. The second involves the

description of the programs used in the process for preparing edited tapes

for the Air Force Geophysics Laboratory, the World Data Center, and otherinstitutions.

My recommendations for the use of this manual are as follows.First, if one has no familiarity at all with the V72, then I highly rec-

ommend one to read section I, GENERAL INFORMATION ON THE VARIAN 72COMPUTER, thoroughly. Second, if one does have some knowledge of theoperation of the V72 computer, then one should use section I only as areference. Third, if one desires to process tapes and is not familiarwith the procedure, then.one should read section II, EDITING MAGNETOMETER

NETWORK DATA. Also, in section II.A there is a brief description of the

processing procedure along with the features and functions of each pro-

gram in all of section II. The programs have been explained so that ifone wishes to learn about the CMB PROGRAM, then one can just read thepart about the CMB PROGRAM and nothing else to execute it. Also, one

should read a program thoroughly to learn about all the possible options

that are available, and possible situations in which the program can

be used. Fourth, I recommend any user of the V72 computer to read thisentire manual to learn what kinds of programs and commands are available,

because they might be helpful to whatever operation one is conducting on

the computer although indirectly related.

.. ..-................

- .-.---..

I.B Types of Commands: OPCOM and JCP

There are basically two types of commands (requests) to operate theV72 computer. A request to the Operator Communicator (OPCOM) beginswith a semicolon (;). A request to the Job Control Processor (JCP)

begins with a forward slash (I). OPCOM is generally more powerful than

JCP. For example whenever requesting most background programs a JCPcommand is used, and to abort background programs an OPCOM command isused. All the programs discussed are background programs.

The OPCOM command runs foreground programs and the JCP command runs

background programs. More than one foreground program can be run at atime, whereas only one background program can be run at a time. Fore-ground programs have higher priority than background programs. Section

I of this manual will deal with OPCOM Commands (ABORT, ASSIGN, DEVDN,DEVUP, and IOLIST, TSTAT), and the rest of the manual will deal with JCPcommands.

One important function by an operator of the V72 computer is press-ing the return. One assumes that to send a keyboard input to the compu-ter one must press the return. For example to communicate with the

computer one must press the return to enter a command, press the returnafter entering a response to a question so the computer receives theinformation, and press the return after all the questions of a programso the computer can begin execution. Thus, throughout this manual when-ever a communication occurs with the computer pressing the return willbe assumed, and thus not mentioned. Also, dhen a question is askedwhich requires a number as the response and no response is entered fromthe teletype terminal followed by a return, the response to the questionwould be the same as if a 0 was entered from the teletype terminal. Fi-

nally, when a question is asked which requires a letter as the responseone should answer it, otherwise when one proceeds by pressing the returnthe question will be filled with a Iblank response.

Another important fact about ut-ing the V72 computer is that whenevera (/) is typed followed by a return or a (/) is typed and a program namefollowed by a return, then one will hear a beep sound. This beep soundwill also be heard whenever the return is pressed after a question in aprogram or when a plot has been completed on the teletype screen. Thebeep sound is an Indication that the computer Is either ready or waitingfor input. One should always wait to hear the beep after a return; oneshould not press the return again until the beep sound occurs first.Otherwise, a problem may occur where the JCP becomes hung up and thennothing can be executed from the teletype terminal. To solve this pro- -blem one can type ;ABORT,JCP this may put the computer into a form

again where one can execute programs from the teletype terminal, However,sometimes this solution will not correct the problem ani then one willhave to reboot the system, which will be discussed in section I.F.

2S. . .. . . . . . . . . . . . . . . . . . .

-. C . . . - IC .-:,.

......-. ,--- .. . . . . . . . . . . .

The programs are stored on disk in various libraries. Some are inthe background library (BL) and the rest are in alternate libraries asshown in figure 1. The easiest type of program to request is one locatedin the background library. The following would be conducted to request aprogram on the background library

/(NAME OF PROGRAM)

For example

/WA5 or /PM

If a program is located in one of the alternate libraries then the proce-dure is slightly different as follows

/ALTLIB,(NAME OF LIBRARY)

JC** <-- Computer Response/(NAM11E OF PROGRAM)

F,,r .'

/ATL IH, D2

JC** <-- Computer Response/(CV2

To abort a program the OPCOM command ABORT is used

;ABORT,(NAME OF PROGIAM)

JC** <-- Computer Response

For example

;ABORT,WA5 or ;ABORT,CV2JC** <-- Computer Response JC** <-- Computer Response

3

-- I r - . ..I--I" -I .: "- ." :" '-- J-. -= . "-. I I I I I I;-i.- ,- .- -- , *. :.- -. . .. .. .. - - ... .....-. .

I

FILE DIRECTORy FOR LUr SL FILE DIRECTORY FOR LuN N-FILE NAME STAkT END CURRENT FILE NAME -TART END CURRENT

FMAIN 3 103 103 Jum. 3 313 10IOUTIL 103 144 144 PLOTFL 313 1443 710USORT 144 223 223 DSCFLI 313 1443 723EDIT 223 262 262 DSCFL2 1443 2263 1"66DUMP2T 262 472 472 DZCFL3 2263 3021 2264D 262 472 472 DSCFLA 2263 3021 2775 "PROTEC 472 475 475 DSCFLE 3021 3557 3021TAPLOG 475 624 624 51 3557 3615 3573TAPDUP 624 723 723 51 3615 3653 3632LINCHK 723 1116 1116 BLD 3653 3742 3742DISKNu 1116 1162 1162 DTR 3742 4101 4101SB00T 1162 1175 1175 ARMAND 4101 4543 4540RELIKr 1175 1214 1214 FIND 4543 4707 4707LM1CN 1214 1314 1314 ACC 4707 4776 4776DASMR 1314 1442 14,42 477 5435 5435JCP 1442 1477 1477 SPRINT 4435 5660 5660FORT 1477 1776 1776 FPRIHT 5660 6102 6102VSACT3 1776 2002 2002 TEMP 6102 6302 6302VSACTI 1776 2002 2002 LACE 6302 6401 6401VSACT2 1776 2002 2002 FILT 6401 6617 6617ASM 2002 2064 2064 PLOT 6617 7066 7066FTN 2002 2064 2064 SCREEN 7066 7172 7172NUFILE 2064 2216 2216 MAGH 7172 7334 7334ARCOPY 2216 2222 2222 RED 7334 7755 7755FC3 2222 2652 2652 HODO 7755 10303 10303PS 2652 3242 3242 RF>P 10303 10542 10542PM 3242 3535 3535 SHS 10542 10756 10756UA5 3535 4155 4155 AP4 10756 11116 11116

1UNAS* 4155 51?' ZUmASI 11116 i1301FILE DIRECTORY FOR LUN D2 FILE DIRECTOPR F2 P LuN D4 -D-

FILE NAME START END CURRENT FILE NAME .P T ErhI t CU7Er"

IMP 2 114 lei <1 2 54KPR 114 222 222 XTR 64 22- 227KPs 222 352 352 D.T4 227 356 356CMB 352 467 467 VA 356 443 443TCY 467 643 643 XFR 443 526 526RGN 643 1033 1033 7H4 526 732 732CV2 1033 1165 1165 TCK 732 1043 1043IMC 1165 1321 1321 TUCK 1043 1162 1162FILE IIRECTOPV FOR LuN [5 u45I 1162 1321

FILE N."E 1T RT ErU (UPPENT FILE DIRECTORY FOR LUN FLM-1Ir(T 2 2?I 271 FILE HMrE STMRT END CURRENT

271 274 2>.-HpcOPy 274 330 330 MAGNT2 2 5 5HrkHIU 330 34- 342 AID 5 20 20, UMP2 342 si7 517 USOPCM 20 71 71RTCOIL 517 601 600 JPufMP 71 100 1005k; 601 754 754 Pi2: 100 144 14'

754 13j1 1331 PATCH 144 170 170CAT 1331 1751 1751 BTPTCk 170 175 175SXAT40 1751 2021 202 PT(HIM 1Y 207 207N 2021 2033 2026 D c 26: 221512 2033 2045 2034 A(TmP S213TEST 2045 2071 2062 M"GINT ,'b 306AP2 2071 2242 2242 FR 306 3S6 33API 2242 2412 2412DF1 2412 2556 251bDPI 2556 2722 2657 3UNA59 356 1701DDI 2722 3066 3031

zUNeASt 3066 3221

'tgurt 1: A It lug of the progr.ims on varf ouslibrarles as of September 1984.

4.. . . . ..--.-

I.C Types of Error Messages: 1030, 1000, and 1014

At this point in this manual three types of error messages, whichcome from the computer operating system (1030, 1000, and 1014), thatcommonly occur will be discussed.

The parity error (labeled as 1030 on the teletype screen) is themost frequent error of the three types. A parity error is an errorwhich may occur while reading or writing a tape. This error can best beexplained by the following example. A tape may have written on it anillegible record because there may be a bad spot on the tape, or dirt onthe tape head, or some malfunction by the computer. Whenever this tapeis read the parity error will appear as an 1030 on the teletype screen.This is a peculiar error because it does not always show up on the tele-type screen or on the Taplog. For example a tape may be read on a tapeunit and there would be no sign of a parity error on the teletype screenor on the Taplog; but then at some other time, possibly when readingthe tape on a different tape drive, a parity error will appear on theteletype screen and/or on the Taplog. An important point is that whenthe computer is executing a program and it encounters a parity error

then the 1030 message will appear on the teletype screen; and in somecases the program itself will give a message on the teletype screen inaddition to the message from the operating system. -

The 1000 error indicates thit a device is not available, which couldhappen when the tape unit is not put on line and/or by checking theIOLIST (discussed in section I.D) one may see that the device is down.This error will continue to occur because the computer will always tryLo input/ouput until it succeeds. An example of this error and itssolution is discussed on page and shown in figure 3.

The 1014 error occurs usually when the computer tries to write on atape and it cannot, because the write ring has been removed from theape. Thus, to eliminate this error one can place a write ring in the

groove of the back of the tape and then proceed. There are other causesof this error but they will not be discussed because these causes occurrarely.

S. . .. . . . . . . . . . . .-.

.. ..

I.D Checks of Computer Status: IOLIST, TSTAT, and ()

Three important checks one should do whenever one begins and finishesworking with the V72 Computer are:

CHECK #1 CHECK #2 CHECK #3

110LIST ITSTAT -D D t 6 - UO0 VSSCPT P30 5047401, 0oo000 JOeP1 I tk*1- LPO00 USSAL P26 S047401, 9eeeJM 3 t023- MTO0 VZDB P24 5047481. ee.00M2 4022)- flTOI VSTYA P23 S047411, eone.MI 1621 i, MT02 UZUCA P22 S047SI1, 000000 TM 077777 TS 07755SsX t eI i P018 VZSPOA P22 Se4?4e1. oeeeSo t ISO- LPO0 USCLPS P22 S847401, 0eOBO0PL (eSC- DOlE VZMTA P22 S047401. oeeeDU t(39)- MTOO VgSPLP P21 S047511, 08010 TM 077777 TS 077337L5 10241- T'0 USOPCM PiO s005405, G0000r.7 10371- DOIG JCP P81 584440, 0004

n5 10365to DO! F;.DS te3s), NO J -4 %034db DOIDD3 1033)- DeL .D2 %032). 'OICDl '0t31)- DOOKDq (03%). DOIAOC (001)- Tre"SI % 0Q)- TY6"So (03)- Tee-PI (W4 I- 0001LO (NS)- TOO.-" #I e&)- D000BO 107)1- D001SS (0o8'- D-0HGO (0g)- DC40GPO (0101- DOOMDI (011)- Tv e"DO (e,12 TVO-CU (18)11 DOOESw l1e2). PoM-CL tIe3)- D43 AOM (104)- DeDDL (105)o D40CFL (186)- DOORThe IOLIST (input/output list from computer to peripheral units:

teletype screen, tape unit, etc.) can be used for three purposes: tocheck whether the devices are up or down, whether DU is assigned to theproper device, and whether LS is assigned to the proper output unit.

There are three devices MT00, MT0l, and MT02, each of which is a tapeunit. The IOLIST in column 1 of figure 2 has listed the various devices.One needs to check whether the devices are up or down; if a device isdown then any tape mounted on that tape unit cannot be read from orwritten to. Comparing the IOLIST in the first column to that in thesecond column of figure 2, one can see that in the second column MT02 isdown by noticing the D (DOWN) printed next to it. To bring the deviceback up for use one should type

;DEVUP,MT02

6

- "..'-i.".'--... . . ....' . -. ..--. .. .. . . . ... '-.,.. . . . . .... ..... . . -.,, • ,,

4S 4w ID CU OQ 0 W* G. CI 0 L. .1 C. . 0 Co _j 'S X .J 0 m 00 i L.w <11 C.

<- 0.. F- - 1-- 0 0.. 0- (D *; OD 0 0S e> D 0 > > 0 CD (S) 0 >>D0

4M Ln Ml CU --4 r- (So Om- C- WD tP -r- M Mu. 0 -- 4 W (M -r Us' t.0 r- W Ci 0 M4 (U N Mu V' l WA.W - WNMW uU MN MM MM M 11 <F 00 0 <000 7-0 - - -0 0 0 4545

0 w0-0 0 #o0 D-S ,0 0 '>0? 0C k>eD< S o- o

Ulvm .0 .

a.E~~~E (S0 00 <SA0 00 A03)

e* b M (U - r- l Co Co r- -D Ut -r M N (D rU m (u -4 Uu M V U) W

S)0 0IS-' 4 G .)" D V OD 00e-" :p- C07 ISO -4 -C 0-o -

(A Cb -4 ml Cu4 x 0 -1 V~) r- w U)W Cl Cu In0' '-0N4C - )' C)C - .J- iM 0a. E Z Z V) In a- Cl .J C. ro %=a iM&- Ci Ca C4 Co k. kA La -J &af 00~ kA 0 a.. C.k C. Q V) 0 im LA-3

Co 0' "D W4 co 0 wi 0 e0: 0 L,- m 0 i 'IJ O- 4 t 0 <DJ 0- W L,- ex M 00. 400 C,4 .00-- 0-o-000o 00 0 0 0 000D

oa. - 4 Q_ 0 l o--- 0000 C; <S c0)- o -o000 >000cnl0 00 -- OCS.= Li6= 0C0 m : 00'I aZ & :

Is~~ ~ Is -' ft A 4 4 I , I I , W a 1 s. . . Is. . Is . . .. . Is

0 U) C(Cu SoNC.C Ce C Co 0 u1' -r oj -I <!;> 4u 4-n -r Us. %.o0 r- 00 CT# 0 k u - Cu en LA W0

(0-' ~ ~ WL Cu Cu-(- Cu 0wL(' UC lC lr)C lC00C 0 00 -D -0 -00 0

im - Zl zu -C 0 v .J a- '3 Nk cL c r im nj, .1 00 4=> 0i (f) a_ _ 4 0r A v) 0 0l CA <-> 'P .D .J t

4% .r~ AL . .JC 0 .0C 0 AL L . ~, A00.0 0 A0C A

which stands for 1DEV ICE UP' MT02. Then if one chtcks he IOLIST again one _

can see that device MT02 is now up as shown in column 3 of figure 2;thus, it can now be used again from the teletype terminal.

In general the devices should always be up and ready for use. How-ever, there is an excelition. So-metimes when one tries to execute aprogram a problem mnay arise and one method to solve the problem is bybringing the device down by typing

;W VDN,MT02

which stands for DEVICE DOWN MT02. For example, if one tries to read ablank tape with a program like TAPLOG a problem will result because thecomputer will fail to read to any device and simply typing ;ABORT,TAPLOGwill not suffice; one must bring the device down to abort the programand then bring the device up again. The procedure for this example isshown in figure 3.

ENTER INPUT UNITS 1.2!.3 F(eR Ml*I,fl,3.

'[-; FOR SII4.LE PRIMT iz3 F(.R 4.LL PRIN~T. i- TO LOC ;.PS

1000,. MT00

1000. M700IDEVDIINMTeO

Is,0*fTOO1000.* MIOO1001. T#qP.0i

DEUUP. MY"~

Figure 3

Many programs ask which tape units to read from and/or write onwhich can easily be answered by typing in the number of the tape unit asrequested usually (MI, M2, or M3); however, some programs assume thetape is on device D11 and do not ask which tape unit. In this case thetape is read on whatever tape unit DU is assigned to, MT00 usually.Looking at the IOLIST in column I of figure 4 one notices that DU is as-signed to its appropriate tape unit, MT00. If one desires to read a tapeon a device where DU is not assigned, then one can assign DU to the deviceof one's choice. For example to read a tape on MT0I one should type

;ASSI(;N.DU,MTOI

8

-' -' -' 0 eD -' - . - - -- r. 0 O.S .D -S.S 0. QS S D S W<

o n m' cu - c pr .at r r- t 5 -r .u =D (v in -r uk- .. a. <>% (u r nv- .

(D LA(' CU - f' 0 0 0. r -(n A (U n 0n -n M. C' Tn I. Mf 0&- 4D3 0. 0 4 DioC D -~ -U -4U( CD CD (0

NI -( U- X 0 .J n (Al r- WD LA) V- M wU .0 Q- C . 0 (A 00 0 0 0 3- _j Z. -3 _

000 ,'J~ 0 w -0 0 u ~ -J (.) ~ Mtt 0 0 . - - M, m D 0D W Lt- C.'

0 (SS 5 43D U. . . . Z> S, O S tU -'. 0 1? * a * g

z -Q -c m -Af-I 1-&3f.- -~ -3 L-- -- a n :I d;1L

LA' (. I'u 0- t2 ~ U C) 1 D~ LP r --I r l CI -0 0? 0 L. '. 0 0 7 --- "J 000

'- -N--------= nr "nMrlr 4,IDS D ' !- --- - - D

'D O .r 'm Go~ J- 0. So 1 .So . O e> 1. 1> :3; 0 <S 0.- 1-: -t .o -> q J 0

a0 411 a- I- 0. 0- a0 0 a0 0 a a > 0 -0 a0 0 0 0>> 0 00a 0 a 0

-- ----- ----- -- ---- ----- - --- - - - - -a --

('A ) j- - D 0 % W Oh v r, ru I C . - nU I V, .1 V~~: - - 'U (9.9' -1 .0

lA -(9" - X 0 .1 n (A C%- (af 4 (o ^j u 90 0- 0 -1 -0 ~ - s~

-00.~~~~~~~~ . . . .4 .A .. .1 0 0 0 0 3L . ... f ~J.. .0 0'.i. 0

Then checking the IOLIST in column 2 of figure 4 one notes that DU is nowassigned to MT0I. Remember that whenever dealing with a program thatreads from DU check the IOLIST before requesting the program, and wheneverfinishing with a program that reads from or writes on DU check the IOLISTto make sure that DU is assigned to the usual device MT0O, and if it isnot then assign it to that device by typing

;ASSIGN,DU,MTOO

then checking the IOLIST in column 3 of figure 4 one notes that DU is as-signed back to its usual device. Also, whenever the system is rebooted(discussed in section I.F) DU is assigned to its usual device MTOO.

Some programs depend on the assignment of LS for data printout to acertain unit. Looking at the IOLIST in column one of figure 5 one no-tices that LS is assigned to its appropriate unit, TYO0. When LS is as-signed to TYOO the printout for certain programs, for example DUMP2, areprinted on the on the teletype screen. Also, such programs can be print-ed on the line printer and to do so one should type

;ASSIGN,LS,SPOO

then checking the IOLIST in column 2 of figure 5 one notes that LS is as-signed to SPOO. Remember that whenever dealing with a program whoseprintout depends on LS assignment chick the IOLIST before requesting theprogram, and whenever finishing with a program that prints out accordingto LS assignment check the IOLIST to make sure that LS is assigned backto its usual printout unit TY00, and if it is not then assign it tothat unit by typing.

;ASS IGN, LS, TY'.

then checking the IOLIST in column 3 of figure 5 one notes that LS is as-signed back to its usual unit. Also, whenever the system is rebooted(discussed in section I.F) LS is not returned to its usual unit but toSPOO; thus, LS has to be assigned to its usual unit.

In summary, when using the IOLIST check to see that all the devicesare up before and after using the computer. Use the IOLIST to checkwhere DU is before using a program that reads from or writes on DU, andwhen finished assign DU back to MT00 if it is not already there. Finally,check LS before using a program whose plintout depends on the assignmentof LS.

10

*. *o~.* *. .'...

* 0 T U (~ V W L A0

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The TSTAT indicates the task status of the computer. For examplewhen no program has been requested, the TSTAT appears as it does in theupper-half of figure 6. There are eleven lines; the first ten beginwith a 'V' and the last line with JCP. When a program like DIG is beingexecuted the TSTAT will appear as it does in the lower-half of figure 6,where the first eleven lines are the same as before, but now there is atwelfth line which is the name of the program being executed. Thus, theTSTAT can be used to see whether a program is being executed or not.

The forward slash ()caii also be used to check whether or not abackground program is being executed. For example if a program is notbeing executed then when one types

JC01 <-- Computer ResponseJC** -

If the JCP is busy, for example when a background program is being execu-ted, then when one types

there will be no response from the computer.

As a useful method, thJ UI) can sometimes be used to abort a back-ground program,. only. When a question of a background program is beingasked responding with the (/) key will abort the program. Once thequestion(s) have been asked and the program is running a UI) cannot beused to abort it, only by typing ;ABORT,(NAME OF PROGRMI) will theprogram abort. An example of thiis procedure is illustrated in figure 7.

ENTER IhPuT NIlT: t,2.3 FOR I.NZ.fl3.

2013. TmqPLO',.

-ToPLOCE iTER INPUT UtSIT' 1.2.3 FOR iI.ti2.M3.

SICMJ FOR SIK4LE PRINT ui3 FOR s*IL PRINT. SS2 TO LOC. GAiPS.

if % 8159 2412Z15 FOLLOWS 0 0 0' 4 0 0

510 S £29 20(:S-.330 FOLLOWS$ 8169 20,56 0 396(0 8359 211 0:14 FOLLOWS 8169 241S9140 Ss

,ASOTTPLOC

F guru' 7

12

%-.

TSTHTJS .PT P30 S04740 1,( 00-'l,'1",

itS.,ML P,"6 $047401 , 00&:(1 -k_"[if P.24 c047 401, ®QQU)II TY'H P23 E504741 1, 1 , 0'':U,:- P22 S0475 11, 0000c TH 077777 T-. 0?744IU.JF'OH P22 S047401, 0000YS CLP$ P2, 5047401. 000 0 .t1J0ITH P 22 S04740 4 ,

UISPLP P21 5047SI1II, 000100 T I 077777 T -77774QSOPCM PIO 5005405, 020000JCP PO1 $044400, 00000-

;T3:-TpT--SCT P 30 p 047 401, 0000 0I ,-:L P"6 C047-401 0( 'Cl

v 11E PIL4 '5.i4 ) 0 (W1 0 0 CkV.Ti P23 7 0. 0VZUICP P 22 S047511, 0 0 0 00 T] 0i7 177 -1 T07-771&ZS"' PI0T P22 5047401, 000000

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USOPCP P221005401, 020000JCP Po1 5044400, 000000Imc POO s100001, 000000

Figure 6

13

......................... -. . . . . . .. . . . . .

. . . . . . . . . . . . . . . . . . . . .:: "- . . . .-.. . . . . . . . . . . . . . . .

One final item of importance to be mentioned is that whecnever a pro-gram has completed running or whenever a program is aborted the followingwill be printed on the teletype screen

JC** <-- Computer Response

and this message is accompanied by a beep sound.

14

I.E Correcting Keyboard Entry Errors: C)and Rub-out key

Another type of slash, the back slash C\,can be used to discardthe line that was just typed. For example a line has been typed and be-fore pressing the return key one notices a typing mistake. One can justtype a (\) to cancel that line and start over. Whenever the (\) key ispressed there always is a line feed and if one uses the (\) when answer-ing questions in a program then there also will be a return to the leftmargin. Examples of using the \)are shown in figure 8.

/ALTKIB,D2\ip .'sALTLIB,D2

Jo"1

CV2 PROGRAM -MAKtES IN FPOM IS TkPE$REVDI4J1bt 0-2.1 ZZ MlAP 93 PJKE

1. MOUN~T THE 15-SERIES TA~PE ON AN%, TAPE UNIT2. PRV i RETURNI TO -T.,R T E PtiUN.t WHE RADYv

------------------------------------------- OPTIONi CLECT1Om------------------------IS TAPE "lf~Ras tv0LD1

3.33IteUT TAPE UNIT 4..)

---------------------------- ----------- SE1uP COMnPLETE-------------------------PRESS PCTu.ri TO CONITINUE 0* £ftT(1 I TO SCRATCH ANiD START AGAIN

Figtire

Anoth-2r technique to correct a Lypographical error is to enter a rub-out, but this can only be used to correct the last character typed, andthe next to, the last and so on. Each rub-out removes one character, work-ing backwar-ds from the end of the line. A rub-out is entered by depressingthe shif t -ey and then the rub,-out key, and it appears on the screen asan underscore. Examples of using the rub-out are shown in figure 9.

/OAS -- A

Figure 9

'A5

I.F V72 Front Panel: Sign Switch and Sense Switches

Many of the programs that ar! run require the use of four buttons on

the V72 panel besides answering the questions. The sign switch is thebutton labeled 15 on the panel in figure 10, which is a diagram of the V72

panel, and it is used frequently in executing programs. The sign switch

is momentary: that is, it is on by pressing and holding (the light above

it will turn on); when one stops pressing it, it is off (the light above

it will turn off). The sign switch when pressed sends a signal to the

computer to do a certain function, which is dependent on the logic ofa particular program. The sign switch can be used in a variety of ways

to send a message, for example one common use is often when a new tapehas to be mounted during the middle of a program. During execution ofthe WA5 program the archive tape being read reaches its end and begins

to rewind. To continue the process the next archive tape read has to be

mounted and the sign switch pressed as the statement indicates in figure11. Also, the sign switch can be pressed to signal the computer that a

blank LM tape has been mounted and is ready to be written as in figure 11.

Many programs rely on the sense switches located on the V72 panel.

There are three sense switches: sense switch I (SSI), sense switch 2

(SS2), and sense switch 3 (SS3) as shown in figure 10. A sense switch

is turned on by pressing and releasing the button (the red light above itwill turn on). To turn off the sense switch one presses it and releases

the button (the light above it will turn off). A sense switch, like thesign switch when pressed sends a signal to the computer to do a certainfunction, which is dependent on the logic of a particular program. The

sense switch(es) can be used in a variety of ways to send a message, for

example during execution of the WA5 program a sense switch (in this caseSSI) can be used to fill out the day with blank frames as indicated in

figure 11. Also, S52 can be used to omit the 11 tape after an IS tapehas been written as shown in figure 11. Also, more than one sense switch

can be turned on at a time during an execution of a program. Finally,

if a sense switch is not used by a program, then it has no effect on theprogram whether it is on or off. Generally all sense switches should be

turned off when not needed by the program being executed and when one has

finished using the V72 computer.

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I.G Rebooting The System

Rebooting tile system can be used as a last resort to solve many prob-lems that cannot be solved by one of the earlier methods discussed. Forexample one problem that occu-s sometimes is the V72 computer becomeshung up and one cannot type arything at the terminal so the system willhave to be rebooLed.

To reboot the system one should refer to figure 10 which is a diagramof the V72 panel. The first step in rebooting the system is to turn thekey to the ON position. The second step is to press the RESET button,then the STEP/RUN button (to create a flashing run light), and then theBOOT button, in that order only. The third step is to answer the ques-tions that will appear within 10 seconds of pressing the BOOT button.

The first question will ask whether archiving is desired and, if so,on which tape unit. If archivng is desired then either a 1 or a 2 mustbe entered for the appropriate tape unit. If archiving is not desiredthen a 0 is entered. If archiving was begun then a second question willappear asking whether or not ai, end of file is needed. If archiving was - -

not begun then the second question will not appear. After the question(s)have been answered the V72 compnuter should be functional again from the . -

teletype terminal. The easiest wdy to check whether or not it is, is totype

JC0I <-- Computer l esponseJC** <--

If there Is no computer response then there is a problem.

Finally, whenever the V72 computer is rebooted all of the physicalunits are reassigned to their riginally programmed logical units. Forexample as mentioned earlier DT is reassigned to MT0O and LS is reas-signed to SPOO.

1 9

-. --.

"-.----..-.]-- - - -

II. EDITING MAGNETOMETER NETWORK DATA

II.A Description of steps for editing Magnetometer Data

This is a brief description of the editing process where archive

tapes are editL1 in various step; until the final World Data Center

(WDC) tape is made. At this writing the following procedure was used.

1. The WA5 program was used to write IS and LM tapes from the ar-

chive data tapes.

2. The CMB program was used to combine the IM tapes of one month

into one RM tape.

3. The IMP program was used to salvage a hard-to-read IM tape by

copying it.

4. The TCY program was usel to make a copy of the RM tape.

5. The PM program was used to write a CM tape from the RM tape copy.

6. The WDCTAPE program on the CDC 6600 computer was used to write

a WDC tape from the CM tapes for 3 months.

The following is a brief description of each program in this section.

WA5 PROGRAM is used for basic editing of archive tapes into IS and/or

M tapes. This program takes about 36 minutes to exe-

cute.

CV2 PROGRAM creates the data needed for an IN tape from an IS tape.

Also, this program checks whether or not a tape is an

IS tape, the date on an IS tape, and whether or not

there is a parity error on an IS tape. This program

takes about 10 minutes to execute.

IIP PROGRAM is used to attempt (5 times) to salvage a hard-to-read

IM tape by copying it, hoping that you might get onepass of the program to make a successful read. Also,

this program checks whether or not there is a parity

error on an IM tape. This program takes about 2 min-

utes to execute.

020

02

DIC PROGRAM is capable of printing on the teletype screen the re-sults of several checks made on the L'1 tape. This pro-

gram checks the IM tape for the number of missing datapoints for the X, Y, and Z components for each station.Also, this program checks whether or not a tape is an

IM tape, the date on an IM tape, and whether or not

there is a pority error on an IMl tape. This programtakes about 3( seconds to execute.

CMB PROGRAM writes a RM tape from one month of IM tapes by combiningthem one after another. Also, this program checkswhether or not a tape is an IM tape, the date on an IM

tape, and whether or not there is a parity error on anIM tape. This program takes about 35 minutes to execute.Note, to check a single IM tape for something the INC

program should be used, not the CMB program.

RGN PROGRAM writes a RIM tape from one month of IS tapes by reading,

computing, reformating the results, and writing themonto the RM tape. This program checks whether or not atape is an IS tape, the date on an IS tape, and whether

or not there is a parity error - -n IS tape. Thisprogram takes ;bout 5 hours to execite.

TCY PROGRAM can make a cop., ol different kinds of tapes. This pro-gram can check what type of tape it is and whether ornot there is a parity error on the tape read. The timerequired to execute 4his program is dependent on thenumber and length of r'ecords to be copied.

PM PROGRAM writes a CM tape from a RM tape. This program makes anumber of checks on a R-M tape whether or not it writesa CM tape and prints the results on the teletype screen:the number of missing data points for each componentot each station for every day of the month. Also, thisprogram checks whether or not a tape is a R.M tape, the . .

year and month on a RM tape, and whether or not thereis a parity error on a PM tape. This program takesabout 35 minutes to execute.

IPS PROGRAM writes a FS tape from an IS tape. This program makes anumber of checks on the IS tape whether or not it writes

a CM tape and prints the results on the teletype screen:the number of missing data points for each componentof every station for the whole day. Also, this programchecks whether or not a tape is an IS tape, the date onan IS tape, and whether or not there is a parity error onan IS tape. This program takes about 45 minutes to

execute.

"i. :.1

0.,

ll.B WA$ PROGRAM

The WA5 program is used f,,r basic editing of archive tape data intoone second data (IS tape) and/or one-minute data (IM tape). This programtakes about 36 minutes to execute.

At the start of the program a header appears on the teletype screenas shown in figure 12. The header includes 5 instructions: mount thearchive tape on any tape unit, mount the output tape on another tape unit,check that both tape units are on line and sense switches off, set themargin control to 2 and the copy switch to autoprint on the teletype ter-minal, and press the return when ready to proceed.

The first question will appear asking for the name of the person ex-ecuting the program and the date of execution, which should be answeredso that if a problem arises, who and when the program was executed willbe known. The second question will ask whether or not to use previousdata stored on disk. This question usually should be answered with a[01 whenever one wants to write an IS tape only, or an IS and IM tapeas in figure 12. Previous data can be used when the last execution onthe computer was to convert IS data to DI data and store it on disk.Thus, a [11 can be entered for this question to use IS data stored ondisk to make an 11M tape as in figure 13. Under these conditions theprogram takes muth less than 36 minutes (probably 2 minutes) to executesince the program only has to write an LM tape compared to writing anIS tape (takes about 34 minutes) and an IM tape. The third question askswhether or not to write an IS tape. If one wants to write an IS tape,then a [1] should be entered for this question as in figure 12. Thefourth question asks whether or not to write an 1M tape, then a [1] .should be entered for this question as in figures 12 & 13. The fifth -

question asks which is the input tape unit, that is, where the archivetape will be read (2 in the example of figure 12). Note (figure 13)that when one use:; previous. d ,ta stored on disk the third and fifthquest iou do not appear. The sLxth question asks which is the outputtape unit, that is, where the I and/or LM tape will be written ([1] inthe examples of figures 12 & 13). The seventh question asks for theJulian date. For October 16, V 83, the 289th day of the year, the cor-rect response would be 3289 as in figure 12. The eighth question askswhether or not to disable the time search. When a [0] is entered forthis question as in figure 12 the program will read forward on thearchive tape and position It 10 minutes before the day one wants toedit with WA5. If the tape has already been positioned at the day onewants to edit, for example after a WA5 execution is complete the archivetape is already positioned, then this question can be answered with a[1] to disable the time search as in figure 14. Also, if one learnsfrom the Taplog that there are no data for the particular day one wantsto edit, then the IS and/or 1M tape can be filled with blank frames byanswering this question with a [9] as in figure 15. Under these condi-tions the program will take much less titan 36 minutes (probably 20 min-

22

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utes) to execute since the program is writing blank frames on the IStape, and if an LM tape is writ~en then blank frames are written on it,too. Also, at this point one has the opportunity to check that allcommands were followed and questions answered correctly. If not then a[I] may be entered and the questions will be erased aid the header willreappear so that one can sta.rt over. If everything i:; correct then onecan press the return and the program will be executed.

If the time search was riot disabled then it will be executed, wherethe time to be found, the presert time on the tape, and the time everyhour on the hour is printed on tie teletype screen as in figure 12. Theprogram will stop searching when the tape is 10 minutes before the begin-ning of the day as in figure 12. If the time search was disabled, thenthis entire section will not be printed on the teletype screen as in fig-ure 14.

As the program edits the dat3 and writes an IS tape, it prints eachhour of the day on the teletype s.reen as in figures 12 & 14. Also, withthis printout of every hour a line is printed each time the program cor-rects an error in the data. These errors are listed and explained below,

and some examples of them can be seen in figures 12 & 14.

ERROR MESSAGE EXPLANAT ION

DAY (BAD VALUE FOR DAY) Day value of time label is greater jthan day sought at start of run oris different during the run.

STN (BAD VALUE FOR STATION ID) Station value is rejected by routineas wrong or unconfirmed.

Z L (ZERO TIME LOAD) DDU has tailed to load time properly

after a DDU reset.

TIM (ILLEGAL VALUE FOR TIME) Illegal (impossible) time value.

SEQ (TLME SEQUENCE ERROR) Time value has jumped backward fromlast frame processed or station,, fora given time are out ot order.

GAP (GAP IN TIlE DATA) A GAP in the data is found for whichthere is no indication by an End OfFile kEOF) %nark or spatcer frames.

ISN (ISNUM ERROR) Frame is received which wat recordedas having been previously received.

(This list is contLinuted on the next page)

. . . ..- i -,

i ? '... .. - " •.

BND (OUT OF BOUNDS) Fluxgate value is more than 2500 nTdifferent from the baseline value.

OFL (OVER FLOW) Fluxgate value is within 2500 nT ofbaseline, but is exceeding + 2043after baseline is subtracted, causingan overflow on the IS tape.

After 60 of the same error for a particular station occurs a questionwill appear asking whether or not to continue the execution as in fig-ure 16. The usual response is a [0] to continue the execution and SS3must be turned on or otherwise the program will ask the same questionagain whenever the same error for the same station occurs. To preventthe occurrence of this question completely one can press SS3 on at thebeginning of the program. For example in figure 17 more than 60 errorsoccurred without the appearance of this question because SS3 was pressedon at the beginning of the execution. If the same error for the samestation continues they will appear on the teletype screen until 500 ofthem are encountered; after that number to save paper io more willappear on the teletype screen even though they exist.

During the execution of the WA5 program sometimes a command willappear when the archive tape being read reaches its end and begins torewind. To continue the processi ot editing the data tor the rest of theday the next archive tape has to be mounted and the sign switch pressedas shown in figures 14 & 18. Also, the command has an option of pressingSS1 on to fill out the day with blank frames. This option would be donewhen there is no uore data for that day.

A question which may appear doring an execution is one which asksfor the method of GAP TREATMENT as in figure 18. The question of GAPTREATMENT only appears if the program does not understand the possiblegap that it has encountered. When the program encounters a gap and under-stands it, it fills the gap with blank frames and continues editing with-out asking the question. Whenever this question appears one should checkthe Taplog for a gap. The Taplog sometimes shows whether or not a gapexists. The following procedure is the best possible solution wheneverthis question occurs. If one checks the Taplog and notices that thereare some records out of order or over-written, then the question shouldbe answered with a [0]. If the question reappears then continue to an-swer it with a [0] until the gap question asked correspond:, to a real gap.For example if there were over-written records then the records which werewritten over are lost and thus, there is a gap. One must check the timecorresponding to each gap question; and when the question which showsthe time of a real gap appears, then it should be answered with a [1] asin figure 19. Often the Taplog indicates that there are some missingdata, then this question should be answered with a [1]. Sometimes whenthis question appears and one looks at the Taplog no gap Is evident, oneshould answer the question with a [1) because the Taplog program does not

27

. .-. .

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alway. show a gap when it exists. Finally, ii one discovers that thereare many gaps and anticipates the question being asked many times, thena [2] may be entered for this question. Now whenever a gap is encoun-

tered it will automatically be filled with blank frames without asking

the question. A word of advice to the operator, avoid using the [2]option for this question, because data which actually exist may be filled

with blank frames which when occur WA5 will print many ISN error messages.To elaborate when there are out of order or overwritten records and the

GAP QUESTION is answered by filling it with blank frames, then when this

spot on the tape is passed and the program finds the actual data it will

print ISN errors, because it has already encountered these times when it

filled this particular period with blank frames as shown in figure 20.

When the program finishes writing an IS tape it will state so and

state to label the IS tape approprfately. Then a statement will appear

instructing one to mount a blank tape and press the sign switch to writt!

an IM tape, or press SS2 on to omit the IM tape and end the execution.W hen an LM tape is writtcn the computer will state so and state to lab,.l

the I> tape appropriately. Finally, the program will stare that it 1--l"coilpleted the execution and iuto rLWlC; I cop ieS thC Output Iusila ll 1 page.

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II.C CV2 PROGRAM

r~

The CV2 program creates the data needed for an IM tape by readingand computing from an IS tape. It is used when an LM tape has to be re-

made because the original either had an error and/or had not been retained.The CV2 program program checks whether or not a tape is an IS tape, thedate on an IS tape, and whether or not there is a parity error on an IS

tape. This program takes about 10 ii nutes to execute.

At the start of the program a header appears on the screen as shownin figure 21. The header includes 2 instructions: mount the IS tape

on any tape unit and press the return when ready to proceed.1

The first question asks for the IS tape number. For February 9,

1979, the 40th day of the year, the correct response would be 9040 asshown In figure 21. The second question asks which is the input tapeunit, that is, where the IS tape will be read ([3] in the example of

figure 21). Also, at this point one has the opportunity to check thatall commands were followed and questions answered correctly. If not

then a [1] may he entered and the questions will be erased and the headerwill reappear so that one can start over. If everything is correct

then one can press the return and the program will be executed. As theprogram is executing the IS tape is read and the data created is u'tored

on disk. When the program is complete it will appear as in tigurc 21,where the last statement instructs one to request the WA5 pros ran andselect the previous data option. Finally, the WA5 program takes about 2minutes to:write Ehe III tape from the disk.

It a tape is not an IS tape, then when it is read the program abortsitself as in figure 22. The date entered fur the IS tape number que;tionin the example ol figure 21 was the actual date on the IS tape, thu; theprogram was able to read the tape correctly and give a positive response.For example it for some reason one was not sure whether or not the tape

was labeled with the correct date, then the CV2 program could be usedto check this problem. In figure 23 an incorrect date was entered for

the IS tape number' question, and the program states that there is a DATEPROBLEM and had to be aborted manually, otherwise the program will con-tinue until it reaches the end of the IS tape and then aborts itself.Finally, if a parity error exists on the IS tape, then the program sLates

that there is a TAPE READ ERROR - IST= -3 and aborts itself as in figure24.

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II. D IMP PROGRAM

The IMP progran is used to attempt (5 times) to ,;.alvage a hard-to-read Li tape by copying it, hoping that you might get one pass of the

program to make a successful read. Also, the IMP program checks whetheror not there is a parity error on an IM tape. This program takes about2 minutes to exccute.

The first question asks which is the input tape unit, that is, wheretie IM tape will be read ([31 In tile example of figure 25). The secondquestion asks whether to omit the copy tape or not. If one wants to writea new IM tape, then this question should be answered with a [01 as in fig-ore 25. If one only wants to check the LM tape then a [1 should be en-tered as in figure 26, and the program will only read the IM tape. Under

thee conditions the program will take less than 2 minutes (probably 30

,eeond,) to execute since the program does not have to read a tape and

write a tape, but only read a tape. The next question will ask which ist, output tape unit, that is, where the LM tape will be written ([I] inCic.,.. .. :aple of figure 25). Note (figure 26) that when one does not want

to write a he , 11 tape then the question asking which is the output tape"k2l It to:; not appear. If one succeeds in reading an LM tape without

.,in t cr1 ,; a parity error, then the program will stop and state a, r-ad .,s In I igure 20. Also, when the program cannot success-

i , r..ed ti, , tape on tihe first try', then the I'l tape will b rewoLlind, Thl . 1 ;li. iis will occur up to 5 timhes, and if after the fifth

t,:.t the pro ;zan Is unsuccessful, the program will give up the attempt.

a tape L, not an IM tape, then when it is read a mess.age ndica-ti ft,-, nunoer of actual words per record will be printed as In figure

"7, 6.,cu:~;e tihe lumber is dif ferent frot the expected 1680 words perii ,o, [ tape, and the program aborts itself. Also, if a parity

I . ,t. , thi e E! t.pu, then tle progir im st tes BAD Rt;CORI) IS NUMB~i<1. .e,, 12 1 .';ro , "

lo correct a parity error on an 12 tape one can use the LP program,.Tie iMP pro,;ramn can write a new LM tape and the program will respond bystat ing a successful read as in figure 25. Also, writing a new I.1 tapewill he attempted 5 times and if the program fails after the fifth time,then )iit has to write a new IM tape troin the I' tape using the CV2 program.

-F'r i ly, when| a new IM tape is written with IMP, both old and new

I t ape:, are rewound alutotuaitcaly upon completion. Also, when an LM tapehoi,; been read alone it is rewound automitically upoo completion.

38

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II.E IMC PROGRAM

The IMC program is capable of printing on the teletype screen theresults of several checks made on an IM tape. This program checks the

LM tape and tallies the number of missing data p,,ints for the X, Y, andZ components for each station. Also the IMC program checks whether or

not a tape is an IM tape, the date on an LM tape, and whether or not

there is a parity error on an L4 tape. This program takes about 30

seconds to execute.

The first question asks for the Julian date. For December 27, 1983,the 361th day of the year, the correct response would be 3361 as shown

in figure 29. The second question asks which is the input tape unit,that is, where the LM tape will be read ([31 in the example of figure29). Then after the tape is read there is a printout for the X, Y, andZ components for every station giving a count of the number of missing

data points. Then the program states (if true) that the IM tape is agood tape with no errors. Finally, the program automatically copiesthe output and rewinds the tape.

If a tape is not an LM tape, then when it is read an error of NWDS(number of words) will occur and the program aborts itself as in figure30. The error N'.DS indicates that the tape being read does not have1680 words per record, as a good 11 tape does. In figure 30 there is apair of parenthuses after the ERROR: NWDS and inside the parentheses isthe actual nu;aber of words per record on the tape. The date entered for

the Julian date question in the example of figure 29 was the actual dateon the LM tape, thus the program was able to read the tape correctly and

. give a positive response. However, there night be some situations wherethere is a negative response. For example if for some reason one was

not sure whether or not the IM tape was labeled with the correct date,then the IMC program could be used to check this problem. There are 4possible errors associated with the Julian date that could occur as fol-

lows:

ERROR: YEAR - Year value incorrect

ERROR: NMON - Month value incorrect

ERROR: JUAY = Day of year value incorrect

ERROR: DY4N - Day of the month value incorrect

One of thebe errors, more than one, or all of these errors could occur ata time. Examples of these errors can be seen in figure 31. In theseexamples one can see that after the error message on each line there isa pair of parenthoses which contains the actual number found on the tape

40

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for either the year, month, or day. When a bad tape is encountered, one

j. usually will want to abort the program manually after a few printedlines; otherwise the program will continue to print every error for

each trace of the day page after page until it reache:; the end of tapeand aborts itself stating a BAD TAPE - NUMBER OF ERRORS: as in figure 32.

Finally, if a parity error exists on the LM tape, then Lhe program states

that there is a TAPE READ PROBLEM and aborts itself as in figure 33.

TRACE 21 HOLP 18 ERRORt YEAR ( 83)TRACE 21 HOUR 18 ERROR: W" C 12)TRACE 21 HOuR 18 ERROR DO9N ( 271

TRACE 21 HOUR 1 ERROR: JDAY ( 361)TRACE 21 HOUR 19 ERROR, YEAR 83)TRACE 21 HOUR 19 EQQOQ1 hMON ( 12)TRACE 21 HOUR 19 ERROR: DOMN C 27)TRACE 21 HOUR 19 ERROR, JDAY ( 361)TRACE 21 HOUR 26 ERROR' YEAR ( 83)TRACE 21 HOUR 20 ERROR: hMON ( 12)TRACE 21 HOUR 26 ERRORs DOM4 ( 27)TRACE 21 HOUR 20 ERRORI JDAY ( 3611TRACE 21 HOuR 21 ERRORs YEAR 83)TRACE 21 HOUR 21 ERROR' "MON 12)TRACE 21 HOUR 21 ERROPI DCMH 27)TRACE 21 HOUR 21 ERROPi JDAY 361)TRACE 2: HO-P 22 EQPC : YEAR 83.

STRACE 2i mC,- 22 E;Q3;1 sn> I 21TRACE 21 WOCR 22 E;RCp DOMN 277TRACE 21 H0OUR 22 EPQO ' JDAY 3E'TRACE 21 Hcj 23 ERRC$1 YEAR -TRACE 2: HC"JR 23 EQQOa hMCN 121TRACE 2: .'C. -Q 23 ERCO!: DO2'TRACE 2: HOoJ 23 EPP3; JDAY 36:

CCJUT OF P:SS:N DATA PCIMSSTN N 259 )X 259 (Y) 2s9 tz)ST, 2: 242 (X 242 (Y) 242 Z)STS 31 242 (X 242 (V) 242 t'2S TN 51 1440 (X l44 e v 1440 tZI

STm 7: 1440 X . A4,3 Y) 1440 (Z)5Th 8: 1440 (X) 143 V) 1440 122

STh 9' 241 kX) 241 (Y) 241 222

IA TAPe - muBgE OF ERRORS: 2.------------------------------- CO----- --- --C-- COPLETE ------

2

IM-SERIES TAPE CHECK PROGRAMREUlSIOi I,.'3 22 MAR 83 D.J.KmECMT

JULIWI D,TE, (YDDDI

336: I NPVT T,,P, UMIT5 :1..i

3------------------------- T.P[ CHECK LOG ------------------------

ION, MrfeTRACE 3 HOUA It RRWOAI AL ( -3)TAPE PEAD PROILEM - END 0F CHC(

JC14

Fgur 33

II.F CMB PROGRAM

The CMB program writes a RM tape. The RM tape is a one month tape

made from all the IM tapes of a given month. The CMB program combines

the IM tapes by copying one alter another to make an RM tape. Also, theCMB program checks whether or not a tape is an IM tape, the date on an

IM tape, and whether or not thcre is a parity error on an LM tape. Note,

when a single LM tape is to be checked for something the IMC programshould be used, not the CMB program. This program takes about 35 minutes

to execute.

At the start of the program a header appears on the screen as shownin figure 34. The header includes a group of 5 instructions: mount the

first IM tape on any tape unit, mount the output tape on another tape

unit, check that both tape units are on line and sense switches off, setthe margin control to 2 and the copy switch to autoprint on the teletypeterminal, and press the return when ready to proceed.

The first question will- appear asking for the name of the person ex-

ecuting the program and the dare of execution, which should be answered

so that if a problem arises, who and when the program was executed will

be known. The next question will ask which is tile input tape unit, thatis, where the II tapes will be read ([31 in the example of tigurt 34).The next question will ask which is the output tape unit, that is, where

the RIM tape will be written ([21 in the example of figure 34). The fol-

lowing question will ask for the year and month. For April 1981, the

fourth month of the year, the correct response will be 8104 as shown in

in figure 34. The next question will ask to resume a prior run. If onedoes not want to resume a prior run, usually when executing the program

starting with the first day of the month, then a [0] should be enteredfor this question as in figure 34. This question will be discussed

further in the next paragraph. Next, a statement indicating' how the RM

tape should be labeled appears. Also, at this point one has the oppor-tunity to check that all commands were followed and questions answered

correctly. If not then a [1] way be entered and the questions will beerased and the header will reappear so that one can start over. Ifeverything is correct then one can press the return and the program will

be executed.

A statment will appear to mount the first LM tape and press the signswitch. The entire LM tape will be copied onto the RIM tape and then theIM tape will be rewound automatically. While this is occurring therewill be a beep sound about every 10 seconds. On the teletype screen willappear another command to mount the next IN tape and to press the signswitch, once this command is followed the beep sound will stop and nowthis IM tape will be copied onto the RM tape. This procedure will occuragain and again until tile entire month of LM tapes has been copied onto

the RUM tape. Also, at an 1M tape request, the program can be abortedby pressing SSI.

43

I° - *2

.. . . " . . . I; ' . . " . . ' . .

* a a A a a a1 a a

;7 a a aor a a a

4c a a a a a a ' a a

* >

x 0. ac O.r. Ia a

4L I- - - --- - -- - -* -A - -A - -a

~ ad

- Ctftlttlu ~ tO~ 0 0

jE S

*~ _2 On -- - - -a-* ~ ~ ~ ~ ~ ~ ~ 7 a 4 k a'

a t a A t a tG a inaa a a

r ak a- a : a : 1 A : a % a a: a a : 1 a: a : a : a a a a a a

a a ' a a a a a ~ a a a a a a a4

If a tape that is not an [M tape is mounted aid the sign switch ispressed, then the program states there is a TAPE READ PROBLEM and aborts -

itself as in figure 35. If ait IM tape out of sequence is mounted andthe sign switch is pressed, then the program states that there is anINDEXING ERROR and aborts itself as in figure 36. Finally, if there isa parity error on the IM tape, then the program states that there is aTAPE READ PROBLEM and aborts itself as in figure 37. When the programis complete it reminds one to label the RM tape and states that the runis complete as in figures 34 & 38. An important fact about this programis that when the program is complete and the teletype screen is notfilled, then a copy is not made automatically; one will have to obtaina copy manually.

The case just described a, shown in figure 34 is when the programis executed correctly and no problems arise. However, sometimes a prob-lem occurs and the program aborts itself. Whenever this happens the most

frequent problem is a parity error occurs in reading the LM tape as shownin figure 37. To solve this problem the IM tape should be remade. Thenthe CMB program is used to add the remaining LM tapes of the month to theoriginal RM tape that was aborted. For example in figure 37 the CMB pro-gram aborted itself on day 2215, so this day had to be remade. After itis remade the CMB program is requested and all the questions are answeredexactly as before, except for the question asking whether or not to re-sume the prior run. In this case a response of [11 is used to resume theprior run. Then another question will appear asking which day to start

- copying and in this case it would be day 2215 as shown in figure 38.Note (figure 34) that when one does not resume a prior run then the ques-tion asking which day to start copying does not appear. The program willread the partially complete RM tape and print all the days already writtenon the RM tape on the teletype screen, then will appear the command tomount the next LM tape and to press the sign switch. Thus, one can con-tinue as before to process the month of LM tapes to complete the RM tapetape as shown in figure 38. For this program there will be one page ofoutput as in figures 34 & 38.

45

S.. " ."". •'-. . ~ ..- '- - -,' - - -. ' -.. . . ."-- .- ".5 --.- '.-..,".-., .-

*k 9- m t74C II .- wu -

D, - *s 3 Z:'9

0 - Ns - u - f 0. A0Z Ct.. ' C .

C- X 0

a.-0.a-~~a 0 t 0 3 0*>x~r or 0 9-3 '

0.'xn Z: -

X: -a. r~' - r 4 9- 0

- 1L.309 '4 I

CL r.'r-: -3 'o,'*'0C - C. or -Xr* 0.n ~

00 ~ ~ ~ o 2) 3 )- - ''

'0C a. q40.D ~ o - ' 3 ~ 0-. .~ ' -rraC I . -

-,.-~-~rn r - 9-

C~~~~~rt..~~~~~l 'I' r1 9 4~ ' '- . - - 9 .

I~~~~~ ~~~~~ Z. .- a' v-r ' . 9 9 ) DA

'4'~~~( *0a 9 1 ' 11 0 'D 'I 4' V

* ~ ~~~~ .. .. .. .. . .- IL~9, 0 . 0*r ''. . 9 I f u' -. j. '-. 3 '3 0 .

09- 3. 0. x

*a. wI at Q.1 ' "

*. V,*0 . ... (9C

I CI I

-v t-

..-. a (k

II 9- '1 o' - .- '~a-~ 0 .. 'r r~rrZ.

.3' -. 9- IL '4 a 'A~ ~ - ,0 '..~) ) 02

0 9 - 3. 0 ' II n1 ~ . 0 - C' 393 C.)4C

a- C '0 '-~ '--.. '- ' - a a

If

C! a l a Caa a

z r rj r r r r

U, ~ ~ ~ C n, c. Uj C, LA L U , ,

rr L

a F arCC x 0 00

11 a a a c a a , a i.. ' La La 10 1a Qa IS Ca C3 _j 4-)

S~r ISI Za - Ca aZ aP...

*~S'~aJS~u.~JaInxx..ww ~ W. aa , a-

*t I %n %A j, V. *h kA U

wt a . CL ). a Q. & (L m-L m Q x

* u 0 a m a, 7, a n a=ma0a C, n a' n ..a LaC n CC, mS X X X X ZS

* O lv t xt x a a a a a a a> -

*a f'C w L C 12 z fa tn w a % a m a w a

IC Sal > C In a Cl a a a 0 a 0 a C, 0 a a Qa a

5 ' - .ra a C I .J a a I a a a a a a a -2 ~ ~ ~ :'f. - z- a:- C 1 an a a a a a a a a aa3

Q, K!L D. z W-. a- w IwCa a a a a w m aw

'na~ C. Sa

Ca~- 4-a a a a ea

a r ..- - a L O . .Z . S. C C C. C. "1 0. C. C. C.. . C . COa'a -C. nc -z .C a a-a- 1)CZ .

J.~~~ 'US woa a-N s a a a a a a

-- t r .. c a a a- r Z r Zr r r Zr Z r r z47

II.G RGN PROGRAM

The RGN program writc,; a RXt rate, Loo. cacver, thIs pro ram does

not make an RY, tape fron IM tipe; ft ::rce , a RM tape directly from IStapes by reading, computing i:as e av.ri '8s, r, ratin,' the results, andwriting them on a RM tape. To :-11e a Rh tai.e sing the RGN program takes

about 5 hours cun::lpared to 35 1 notes ut aBg the (MB projrana. one may ask

why then use the RGN program? Thie srier is cses I , tapes maynot be available and rather than ;a-in, all thti IX. tapes again from theIS tape s using, the CV2 program: a:;d :kina tie '' tpe l,;ig the CMB pro-gram, one can directly 7a.Ke an Rk t ipe ir-mn ti)e IS teu. In effect, theKGN prgram is a combination of the CV2 ind CMB jrogra-'s. Also, the RGN

program checks whether or not a tape is an IS tape, the date on an IStape, ind whether or not there is a parity error on an IS tape.

At the !-tart of the progra a header a.ppars u th screen as shownIn g re 39. The header incluies a group of s-,v.,en Instrurtions: mount

the fi It-; IS tape on ny tap)e unit, mOunt thb outpuit tape on anothertape unit, ch,eck hit both tape units are on n and sense switches

* f P, pr s SS3 on tcerates ,,, Iity trI( r on IS tapes so the programSIi nt fbort itself, pret ss SS1 on ends a run at an IS tape request,

set t ,ii- fi ,,ntrol to 2 and the copy ,;i tIch to autoprint on the

It -' I rt 1, I, and pres t1e return whn ready to proceed.

T ie first. qne>tin will almpear aesking for the nae of the ierson ex-ecut in, the prog ram and the d. te of exec ution, which should be answeredso that it a problem arises, %.io and when the programs was executed willbe known. The next question will a;k w:hich is the input tape t:nit, that

is, wit-re the IS tapes will be read (12) in the example of iigure 39).The next quest ion will ask whi ch is t e cput pe unit, that is, where

the RKM tape will be written ([3] in the .mpie of figure 39). The fol-Lowing question will ask for the year and month. For lanuIery 1979, the

first month of the year, the correct respons;e will be 79j!1 as in figure39. The next question will ask for the start day of the month. Forexample if one is beginning at the start of an RM tap,, then one willanswer the question with [01 : for the first day of the month as infl;pure 39. If for some reason a KM tape has alread been partiallymade then one can answer this question with the next d:y that should beadded, for example one can ans-.er this question with It(,, the sixteenthday of the month, and go on from there as in f igure 40. Also, if one hasa partially made K.M tape and wants to complete it, then one can answerthi s question with [00] which will find the end of the -zape and then theinext day can be added as in figure 4i. Also, at this point one has the

opportunity to check that all Conn.ands were fol lowed and quest ions an-swelted currectly. If not then a i1] may be eait ered and the questions

will be erased and the he ader wil reappear so that one can start over.If everything is correct then ore can press the, return and the programwill be executed.

0 t

i:. = :, :::: : "B

---0, ., - ' . : . . . . .. 2 .:..f _ , .. . .

t t tt:t

IL w

r. r

Xa ac q~'x x x

Cz Z-q 0 r C Z~O~OOO .O..C /0~.s~~s~DP m.tO~a

0,C KL

44 19 64L 19- p. 4 4a'-

- a a I a a a a a a a ~ 6- a* ~~ r-m~ra x xJa r r

-i ..aN S z~~a .l~-~A~aa p a a a a a a a air w a a

* aa

. ,2a a . . . a a . a a .

1 4

I x ft x x 2 T x

<1 n. >X3 4 4

'I n". a *a a n a a

;::~~: ~ ~ 0 :.,. V Va a 4 1 a

> rs

.0 c c~ c r r c c

f-.- 4 * ~ ' J 4. C %~,'..4%..F ' 4 ~ & - -- a a a a a a a a -9KO.

I .x ~ .4S 4.I ... 4 C%~05r.% ~ %4s%4 O% C

* ~ ~ ~ Z >. . . 0.-.... *-.a... . ... o3

r34 4% r- - x x r r x K

LJ- - - - --- - - -S

o . CadE % . 4.L.~%.'4j ~ ( %

*vacrz. c ra r Q ~a~x~ r1 'Le x* rCLJa

z4 r' ' - 4 C 4

d ~ ~ ~ ~~~~~ E r - - - 4 - 4 4 .-. ~~~~ D1-3,. n. ) 0 o - u -t r- -:-

~~1 I r

40 C C £ C50

I~~~4 41 S

s- :1 a m-c O I3

70, d

- 4 ' x

-)4 :)I :m Z s .0

c~s c ,ap -' c I- a. a

cm m a Ca. CC .~ ~ ..4 ~ ~ 4L~d w 4La

.. *r~~~~~~~~...~~4 r.r r.r...-' . .. 4 - .r ~- '

. .. . . . -. . -

$-r6. 4-i

C& !- -' -Z , -D-I-22 2 a 3 1-CL ~ ~ ~ ~ ~ ~ ~ a C I 7Av f 0 At 0

W% a. 4L4. 'L

*x Iow w 4 w . I 4 .4.4~~w 4r. W4 4 I 4 4j-4l.-

Or -': 30 : . . 4 1 :01 . 6,40 I 4 c l 1x NV Iq v A 4 r4 a a 4 4 4 4

4. V 8 *b. S-4 41 '. 1. 1 V.

z- owl 3 2 3 2 3 3 2*.*-:--, a * a- 0-4 4

A statement will appear to rount the first IS tape and press thesign switch. The entire IS tape vill be processed and rewound, then theIM data will be written on the ' tape. While this is occurring therewill be a beep sound about every 10 seconds. On the teletype screenwill appear another command to mo.int the next IS tape and to press the

sign switch, once this command is followed the beep sound will stop and

now this IS tape will be processed. This procedure will occur again andagain until the entire month of IS tapes has been processed into IM dataand thus written onto the RM tape.

If a tape that is not an IS tipe is mounted and the sign switch ispressed, then the program states that IRF (*) IS IN ERROR and abortsitself as in figure 42. If an IS tape out of sequence is mounted andthe sign switch is pressed, then the program states that the JULIAN DAY

IS 100 and aborts itself as in figure 43. Finally, if there is a parity

error on the IS tape and SS3 is off, then the program asks whether or

not to abort as in figure 44. When this program is complete it statesMUNTH COMPLETE as in figures 39 & 40. An important fact about this

prograrm is that when the program is complete and the teletype screenis not filled then a copy is not made automatically; one will have to

obtain a copy manually. For this program there will be I page of outputas in figure 39, however, in some rare cases (when there are many parityerrors) there could be more than I page.

RGH PROGRAM TO REGENERATE RM TiPESREklSION PGtil.2 17 MAR 3 D.J.KNECHT

1. MiOUNT THE FIRST IS-T.APE ON ANN' TAPE UNIT.2. PIOUNT THE OUTPUT TAPE ON ANOTHER TAPE UNIT

3. CKCtKt i TAPES Oh LINE. SENSE SUITCHES OFF

4. Stfv;[ SuITCH 3 ON TOLERATES PARITY ERRORS

S. SENE uITCH I ENDS RUN AT IS-TAPE REOu(ST

6. SET MARGIN CONTROL TO 2 COLUMNS NUTOPRINT

7. PRESS RETURN TO START THE RUN. WHEN READY

------------------ - OPTION SELECT-ION .----------------------

\OUR NAME AND DATE OF RUN EXAMPLE, SMITH IS MAR 83ARM# A#D 04 SEP 84

INPUT T .E UMITI (N) 1.2,3 FOR fl.M2,M33

OUTPUT TAPE UNIT| (M) 1,2.3. IUT N4OT THE INPUT

YEAR A D MONTH[ (YYMM) EXAMPLEa 7904 FOR APR 79

8210START DAV (OF MONTH)l (DD) 01-31j 00-FIND END OF TAPE

------------------------ SETUP COMPLETE -----------------------PIE55 RETURN TO CONTINUE OR ENTER I TO SCRATCH AND START AGAIN

-------------- OUNT 1S2274 AND PRESS SIGN SWITCH--------------ASORTI IRFIS) IS IN ERROR

i,. JCa3

Figure 42

52

.0 . • - -. - - . - , . . - , . - . . . . , - .. , . - , . _ ' , _ _ ' _ . - ' . , - - - '

RGrI PROGRAM1 TO PEGEHEPtiTE RI'1 THPE' ,R [t'1lr, RNI.2 17 i.P 63 D.J.KNECmT

I. MO UT THE FIPT 1--TAPC ON oriv T.PE UNITZ. MOUNT THE OUTPUT TAPE ON ANTOTHER TAPE UNIT3. CHEtt TA.PEi ON LINE, S(N-E A uITCHES OFF4. AflE-. iUITk.H I ON TOLERAT.- P..RITY EPRPS". SENE juITCH I ENDS RUN AT IH-TAPE k[JuEiT

6. AET MmRCIN CONTROL TO 2 COLUMNS "UTOPPINfT7. PRESS RETUWN TO START THE RUM, UHCE READY

---------------------- OPTIO0N SELECTION ----------------------\OUR NAME 4ND DA4TE OF RUN EWAMPLE: SMITH IS rAR 83

ARMAND 07 SEP 84INPUT TAPE U'IT: (l) 1,2,3 FOR M1.M2.M3

3O(JTPUT TAPE UMITi thl 1,2.3. BUT NOT Tt4E INPUT

NEA.[R A4MD MONTH: (YVMM) EXAMPLES 79e4 FOP APO 7979O5

START DAY (Of MOtTH)l (DI e-31, 00-FIND END OF TAPE

-----------------------. SETUP COMPLETE- ..-----------------------PRESS RETURN TO CONTINUE OR EHTER I TO SCRATCH AND START HGAIN

-------------.MOUNT IS9121 AND PRESS SIGN SWITCH -. -----------ABORT: JUTAAN OV.Y IS 10e

Jc.It

Figure 43

RGN PROCSRtAM TO PE(EUERATC P1I TrAPESFPiIHION RP,N1.2 I- MA.R S3 D.J.KNECHT

I. MOuIIT THE FIST IS-TAPE ON Ah, TAPE UNIT.. twurfT T,4f OUTPUT TPE OH .ANOTHER TAPE UNIT3. kC,' T.PC_: ON LIE. SENilE S IT f

HE OFF

4. SE-( . uITCH 3 ON TOLEC..TES P.-RITV ERPORSI-. 1N04 uIjTCH 1 ENDS PUff ~T IS-TAPE PfvuC;Tt.. -,tT M.P,4il COriTROL TO 2 COLUMNS -UTk)PwINT7. PRSS5 RETURN TO START THE RUN, WHEN READY

-------------------- - -OPTION SELEC TION .----------------------\'0U NAME .tE) D.Tt Of Rum EXAMPLEI SMITH IS MAR 83

INPUT T.PE UlIT' ci 1.2,3 FOR MI,M2,M3j

( OUTPUT TA-PE UNIT: (N) 1.2,3, lUT NOT THE INPUT

%CAR Alo MONTHS (YYMm) EXAMPLES 7904 FOR APR 79

START DAY tOF MONTH)i (DD) 91-31j 9-.FIND END OF TAPE

----------------------- SETUP COMPLETE -----------------------

I'Pt.K PETum' TO CONTINUE OR ENTER 1 TO SCRATCH ID START AC.AI"

------ -MOUNT 159091 AND PRESS SItN SWITCH -------------lO]@, M'ee ".,'T'a | I*ABT, a.CONTINUE

MIN. let IS-TAPE PAWITY [PROR - CONTIPOJ( UITH4OUT A SKIPMIN. let TAPE LiADS I MINUTES - iRITE A BLANKIoie.M.3):2ANOPT? I-ABORT, *-COHTIUE-

AORTI PARITY ERROR ON UNIT 23JC '.

Siitr c

II.H TCY PROGRAM

The TCY program can make a copy of several different kinds of tapes.

Also, this program call check what type of tape it is and whether or not

there is a parity error on the tape read. The time required to execute

this program is dependent on the number and length of records to be

copied.

A question will appe.ar asking for the format of the tape that isbeing read which will he copied onto a copy tape. Tap, formats could be

any of the following:

GE = Any number of words per record; 2 or 3 bytes per word

AR = 2560 maximum words per record; 2 bytes per word

IS 130U words per record; 3 bytes per word

FS b500 words per record; 2 bytes per word

'Di 1680 words per record; 3 bytes per word

CI = 1o8) words p.,r record; 3 bytes per ward

CM - 42()() words per record; 2 bytes per word

For t'xample In igu 45 I i!' entred tor this quest ion, wh, cc any typeof taipe can be read. Then the following ,.uestiorr asks for the number of

per record a:; in figure 45. The next question asks whether or not

t.h r:cord length aries. 'This question should usually be answered with-a in all ca:os a:; in figure 45 except when an archive tape is to

b 1 c 1ed. Ot the common tapes only archive tapes hav variable length

records, but GE night be used for other tapes of this type. The follow-

inl question asks for the number of bytes per word ([31 in the example

of figure 45). Thus, In this example of a GE tape format the tape readand copied is an IM tape with 1680 words per record, nonvarlable lengthrecords, and 11 bytes per word. Note (figure 46) that whenever any tapeformat other than (IK is requested, then the questiont; asking for the

number of words per record, variable length records, and number of bytesper word do not appear. For example in figure 46 [ kM ] is entered to

copy an lEM tape. The second question asks for the number of records tobe copied, where the total number that can be copied is 3200. Also, a

[0] can be entered as in figure 46 to copy an entire tape. The nextquestion will ask which is the input tape unit, that is, where the ori-ginal tape will be read ([3] in tile examples of figures 45 & 46). The

next question will ask which is the output tape unit, that Is, where

the copy tape will be written ([2] In the examples of figures 45 & 46).

51 4

1--7

. -

.TAPE COPIER PRO, PtfIl HPIHELE FORM,-IT - t500 MAN UIRP-: - 2- OR 3-rvTE PI.N.PvPEOISION TCVI.2 - 03 iR 84 - V.J.ohECHT

TPE FORMAT: tFFt GE * CENLr.,oL TO liE IrIPuT)NP •~RCHIvE D,4To"

S, Iri,RM,CM - EfITEn DATAGE

UORD; PER RECORD: (NHNN) 650%) tI Nuluf

VARI, 4LE LENGTH RECOPDS? ENTER I IF kARIHBLE

TAPE BYTES PER LORD, (N) 2-BYTE OR 3-BSTE 6IN.4 V3

NUMBER OF RECORDS' (tNNN) 32000 MAX, O-COMPLETE TAPE00?

INPU, TAPE UNIT: (N) 1,2,3 FOR MI,M2,M33

OUTPUT TAPE UNIT: (N) 1,2,3. BUT NOT THiE INPUT2

PARITY-ERROR TREATMENT: (T) O-ABORT, I-OMIT, 2-ENDFILE

-----------..----------- SETUP COMPLETE ------------------------PRESS RETURN TO CONTINUE OR ENTER I TO SCRATCH AND START AGAIN

RECORD 0 HAS 1680 WORDSRECORD I HAS 1680 WORDSRECORD 2 HAS 1680 WORDSRECORD 3 HAS 1680 WORDSRECORD 4 HAS 1680 WORDSRECORD S HAS 1680 WORDSRECORD 6 HAS 1680 WORDSSPECIFIED NUMBER OF RECORDS URITTENTOTAL RECORDS READ (14CL EOF): 8

-----------------------.COPYINQ COMPLETE -----------------------JC,

Figure 45

TAPE COPIER PROGRM Ht'PI, FLE FORM.4T - 6500 Ms\ ukRD: - 2- OR 3-FTE BIh,""RE"[ION TCNI.2 - k)3 MAR ,4 t,.J.kh[CHT

- - - - - - - - . . . . . . . • - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

TmPE FORMPT: (FF) CF - GEFnRd L ,TO BE IriPuT•mR - .RC'E D,TM .ISF,II M, CM - EDITED D,.TA

RM-UMEER OF RECORDS' (tINNN) 32000 MA X. O-COMPLETE TAPE

INPUT TkPE UNIT: th) 1,2.3 FOR M:,Ml.M33

OUTPUT TtAPE UNIT (I) 1,2,3. BUT NOT THE INPUT2

PmRITY-ERROR TREATMENT' (T) O-ABORT, I.OMIT, 2-EtIDFILE

------------------------ SETUP COMPLETE ------------------------PRESS RETURN TO CONTINUE CR ENTER I TO SCRATCH AND START AGAIN

RECORD 0 HAS 1658 LORDSRECORD I HAS 166S WORDSPECORD 2 HAS 1689 WORDSRECORD 3 HAS 1664 WORDSRECORD 4 HAS 1694 WORDSRECORD S HAS 1685 LORDS

-AOPT ,TCYRECORD 6 HAS 1637 WORDS

JCts

.P.

Figure 46

55

The following question asks for tie method of PARITY-ERFOR TREATMENT with

3 possible responses:

0 = ABORT

= OMIT

2 = ENDFILE

If a parity error exists on the original tape and one wants the programto abort itself when it reads a parity error, then a [0] should be en-

tered for this question and the parity error where the tape is read will

appear on the teletype screen along with the record number as shown infigure 47. If a parity error exists on the original tape and one wantssimply to omit the record containing the parity error from the copytape, then a [1] should be entered for this question (any parity errorwill appear on the teletype screen). If a parity error exists on the

original tape and one wants to replace the record containing the parityerror with an End Of File (EOF) on the copy tape, then a [2] should beentered for this question (any parity error will appear on the teletypescreen). Also, at this point one has the opportunity to check that allcommands were followed and questions answered correctly. If not then a[I] may be entered and the questions will be erased and the header willreappear so that one can start over. If everything is correct then onecan press the return and the program will be executed.

When the program completes its execution of copying an entire tapeand finds a double EOF on the input tape it will print on the teletypescreen END OF INFORMATION REACHED and the number of records read as infigure 48. When the program completes execution of partially copying atape it will print on the teletype screen the SPECIFIED NUMBER OF RECORDSWRITTEN and the number of records read as in figure 45. For this programthere will, be I page of output as in figures 45-48, unless many recordsare copied and the correct tape format was not entered. If a tape readis not of the format as input to the tape format question, then forevery record copied the number of actual words per record will be printedon the teletype screen as shown in figure 45.

A final fact about this progrz-m is that it rewinds the original tape

and the copy tape upon completion cf its execution.

56

..........................................................

-. ~ - - *, -* A P~A ~ S .. * ' . -~---A -~ .

II

THPE L PFI EP F-'',PHII

"'API.AFL[ F.OPIAT - (5.3 mA, UopDz - 0- 09 3-b'VTC BINRYnRLO.'I ,10 T(.) -7 - 03 ti"R 84 - D. .. V ECHT- - - - - - - - - - - - - - - - . . . ..-- - - - - - - - - . . ..-- - - - - - - - -. .-. .-- - - - - - - - - - -T Wd'E F OPIAT : FF i CG G Et I AL I 'TO BE INPUT

AR • C"HI,'1 E D,,t "TA1 1 IM,PM,CM • EDITED DATA

NUMBIP OF RECORDS: ,tNriri) 320(03 MAX. O-COMF'LLTC TAPE ... "q0 10 0

IrPUT TAPE UNIT: i N1 1,2.3 fO MIM2.,M'1

OUIPUT TAPE UNIT: (mi 1,2,3, BuT NOT THE INPUT2

PARITY LVFROR TREATMENT: (T) O-AFORT, I-OMIT, 2-ENDFIL.

----------------- ------- SETUP COMPLETE --------------- ---------PRESS RETURN TO CONTINUE OR ENTER I TO SCRATCH AriD START AGAIN

l'30' MTOAPORT: READ PARITY, PECORD 22

Figure 47

TOPE CO'PIER PROGPAM-UARIABLE FORMAT - 6S00 MAX UORDS - 2- OR 3-BYTE BINARYREVISION TCYI.2 - 03 MAP 84 - D.J.KrfC<IT

TAPE FORMAT: (FF) GE - GENERAL (TO BE INPUT)AR - ARCHIVE DATAISFS,IMI,RM,CM - EDITED DATA

ImNUMBER OF RECORDS: (NNNH) 320B0 MAX, O-COMPLETE TAPE

INPUT TAPE UNITT tm) 1,2,3 FOR I1M2,.M33

OUTPUT TAPE UNITI (H 1.2.3, BUT NOT THE INPUT -.

PARITY-ERROR TREATMEriT: (T) 0-ABORT, I-OMIT. 2-ENDFILE

------------------------ SETUP COMPLETE ------------------------PRESS RETURN TO CONTINUE OR ENTER I TO SCRATCH AND START AGAIN

END OF INFORMATION REACHEDTOTAL RECORDS READ (INCL EOF)l: 44--------------------------- COPYING COMPLETE -----------------------JC$S

Figure 48

57

I. PM PROGRAM (Process One Minute D)ata)

Tile PM program writes a CM tape, which is readable on the CDC C ).,rcomputer, from a RM tape. The PM program makes a nuober of checks otithe RM tape whether or not it writes a CM tape and prints the results oilthe teletype screen: the number ot missing data points for each compocr=ntof each station for every day of the month. Also, the PM program che-kswhether or not a tape is a RN tape, the year and month on a R tape, indwhether or not there is a parity error on a RN tape. This program takesabout 35 minutes to execute.

At the start of the program a header appears on the screen as sh)wnin figure 49. The header includes a group of five instructions: mointthe RN tape on any tape unit, mount the output tape on another tape unit,check that both tape units are on line and SSI on if recycling, set themargin control to 2 and the copy switch to autoprint on the teletypeterminal, and press the return when ready to proceed.

The tirst question will appear asking for the name )f the person ex-ecuting the program and the date of execution, which should he answeredso that if a problem arises, who ind when the program was executed willbe known. The next question will ask whether or not to omit the outputtape (the CM t pe ). It one does not want to make a CM4 tap,_ and onlwants to check the RM tape, then a [1] should be entered for this ques-

tion as in ftigure 50. Under these conditions the program wil take tnuc hless than J5 minutes (probably I) minutes) to execute since the prograndoes not have to read a tape and write a tape, but only read , tape. Itone wants to check the RM tape and also write a CM tape, thei. the qpies-Lton should be answered with a [Oj as in figure 49). The next quest ionwill ask which is the input tape unit, that is, where the R tape willbh read ([2] in the example of figures 49 & 50). The next jUoStion willask whi-ii is the output tape unit, that is, where the CM tape will bewritten ([31 in the example of figure 49). Note (figure 50) that whenOe does not want to write a CM tape then the question asking which isthe output tape unit does not appear. The following question will askfor the year and month. For January 1981, the first month of the year,the correct response will be 8101 as shown figure 49. Next, a statementindicating how the CM tape should be labeled appears. Also, at thispoint oIe has the opportunity to check that all commands were followedlind que tiors answered correctly. If not then a [1] may be enteredand the que:t ions will De erased and the header will reappear so thaton-, can start over. If everything is correct then one can press the re-turt, an: the program will be executed. When the 'ro;raml completes. ago,)d r: it states the end of a );ood run and automatically copies. Aminor p ob em with th iis program occurs when it I s uscd I or t lie twe I t .I-month oI the year; it appears to fall as indicated in figure 51. How-ever, tie! run Is assumed to be good and the problem is with the soft warerather than with tire RM tape checked arnd ite C "I tipc writtn. For thispruo,, , there will be about 2 1/2 pages of output As ini ,lure ,9.

. . . . -.

w-o we- 'a- .

IL Of Z 8 L I CL C 8C

4c II x S I

U* I 'A 8 8

* 58 E8 8

8LJ Iib 1- 0. C

<E -JN-N* : .PJ~l~f . --.. r~.48 : -8t*J.rJf w O0.*-t4'4 8 ,.~N,..

~~~~ 4D:-:-IWW>O

000

wxa8 U...,aW,40- -- - -- -l W S- I

bj 80l o 9 110 8- w.0 1110v m j 48 0 1,00 0 O N M

* ~ ~ ~ 1 -.40,8L1 Iw8rC4 840 .00 84 L, >4

3 0 - ic- ~ 88J----.- 8t

- u- 00-I r 8.U I - - - - QO a 408a

IC I 8E 8 8E - E 8- K ~ 8 I08

I4 .48 8x x XEa11.

OL D -Uo I IL 80.- 1- ~ V m n o e e N * 0

Er .- it Z: ,d

..... E0l 11 0 VIa -A 08 . e - I

8~~~ ~~ 49C ft,9 8 1

~j 10 .- 40. E4 8.0 -~8 J~eur 8 *f80000 * O@'859.

o -. .

cc IL cc C 1C

4[ 'K 14 w

o- -o- o,- I - ------ - -

" I I . .. .. .

00 0 -0 0 - 0Sra I I W 0-- 0

K Ac Io_ I I Ir

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* I I

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O w, I <w In a w , Is -

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00

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~~60

iy I II~I ;i .. ii'~u . I -.- - -' 4

m0 r

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4 **.- - 44~ 4 '4 42 441

'41 9.10 --. 7)

a *' 13 4.I44 ~ :

44;xx I, x'x xI it 1 1 0

4 4~4 W ) 0~. 44.. '4 .7 1 4 Q .W~~~A~~w~~~a~~a.~ z ' 404.- 4. .4 0

-- -- --41 - -- -- --

- - -- - - - - - - - - -- - - - - - - - - -- - - - -

4- - - -- W) 0 0 44 -Q( 40 X-01

w - - - - - - - - - - - - - - , -4-4- -4- -7-0

24 ~ 4 C - - 42 4- 4C.

9to L, 04- EM

44 4 42)0 0. 444m

04K 0 4 4 tt ~ .4 4

z zr0

I' a -. ' C

U.J ~ ~ ~ C Q-. a*~0 1'* K

- --0 Q .' - -- - - ---*~~~C a 0 icTh. .. LI'a

* .- LI. ..--- XC 'I ~s* 4-.IS' C ' 4.-

-. 4~~ ~ -5- -- 'I? .-. C- 1j C

.I .... .. C. .0 .. .C . .. 5 a

-------< r 1 a .- '0zC S - 1:1 Or- -

-- - o-. - - - - - - - '. - -- --

r 4 - - -- -- 0- -0 -. --

C ~ ~ Z -- s.r-o - -c - ~

-- .'.'.Cm- 1.1.. * , .4 00

45. 'C r rC r r r KXKXrr

If a tape is not an RM tape then when it is read an error of NWDS(number of words) will occur and the program aborts itself as in figure

52. The error NWDS indicates that the tape being read is not 1680 wordsper record, where 1680 words per record is the form of the RIM tape. AnImportant consideration is that the IM tape is also of the form of 1680words per record so that if the PM program is used to read an LM tape itwill parcially work; it will read an entire IM tape of the first day ofthe month, but Lhen it will fail to continue onto the next day and abortitself. The date entered for the year and month question in the exa:mpleof figure 49 was the actual date on the RM tape, thus the program wasable to read the tape correctly and give a positive response. However,there might be some situations where there is a negative response. For

example if for some reason one was not sure whether or not the RMN tapewas labeled with the correct date, then the PM progiam could be used tocheck this problem. There are 3 possible errors assot iated with thedate that could ,occur as follows:

ERROR: YEAR Year value incorrect

ERROR: NM ON = Month value incorrect

ERRA: JDAY Day of year value incor-ect

One of these errors, more than one, or all of these e.rors could occur at

a time. An exarm.ple of these errors can be seen in ligure 53. In these

examples one can see that after the error message or each line there isa pair of parentheses which contains the actual number on the tape for-

either the year, month, or day. Also, when an error dealing with thedate occurs the program has to be aborted manually, otherwise the programwill continue to print every error for each trace of the day for the

first day of the month, then states a BAD TAPE NUMBER OF ERRORS: andaborts itself as in figure 54. Finally, if a parity error existson the RM tape, then the program states that there is a TAPE READ PROBLEMand aborts itself as in figure 55.

0

66

0

63,

0 %

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w Z v-j- aL at

I c>a4 a oa a,' z aL w

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w

- -- -a -- - - a -a c

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-Q -.. - - -- - ---. -f -

> a r ..a a z r >a

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M a~a a C

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o ~ ~ ~ ~ .I3 a- a~ -a a-Ac ,aaaQ

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a- - 't- 1 -4 l -i -~- axC y 4 4

-J- - -a M L Q U i OE M. a a

aa~m aaa ~ aa~m a -a a~a- a - 0 a m7134 J43 DJJ~aD3Uaa~a~aJ-D~~a t~a-aJ

II.J PS PROGRAM (Process One-Second Data)

The PS program writes a FS tape, which Is readable on the CDC Cyber

computer, from an IS tape. This program makes a number of checks onthe IS tape whether or not it writes a CM tape and prints the results on

the teletype screen: the number of missing data points for each co:mpo-nent of every station for the whole day. Along with this output faults

(errors) may occur for various minutes of the day, and these faults willbe discussed in the following paragraphs. Also, the PS program checks

whether or not a tape is an IS tape, the date on an IS tape, and whetheror not there is a parity error on an IS tape. This program takes about45 minutes to execute.

At the start of the program a header appears on the screen as shown

in figure 56. The header include; a group of five instructions: mount

the IS tape on any tape unit, mount, the output tdpe on another tape unit,

check that both tape units are on line and SS1 on if recycling, set thethe margin control to 2 and the copy switch to autoprint on the teletypeterminal, and press the return when ready to proceed.

The first question will appear asking for the name of the person ex-

ecuting the program and the date of execution, which should he answered

so that if a problem arises who and when the program was executed willbe known. The next question will ask whether or not to omit the output

tape (the FS tape). If one does not want to make a FS tape and only

wants to check the IS tape, then a [1] should be entered for this ques-

tion as in figure 57. Under these conditions the program will take much

less than 45 minutes (probably 20 minutes) to execute since the program

does not have to read a tape and write a tape, but only read a tape. Ifone wants to check the IS tape and also write a FS tape, then the ques-tion should be answered with a [0] as in figure 56. The next questionwill ask which is the input tape unit, that is, where the IS tape will be

read ([3] in the example of figures 56 & 57). The next question will askwhich is the output tape unit, that is, where the FS tape will be written

(12] in the example of figure 56). Note (figure 57) that when one doesnot want to write a FS tape then the question asking which output tape

unit does not appear. The following question will ask for the Julian

date. For April 17, 1981, the 107th day of the year, the correct re-

sponse would be 8107 as in figures 56 & 57. Also, at this point one has

the opportunity to check that all commands were followed and questions

answered correctly. If not then a [1] may be entered and the questionswill be erased and the header will reappear so that one can start over.

If everything is correct then one can press the return and the programwill be executed. When the program completes its execution It states

that the FS tape is a good tape with no errors; thus, the IS tape is a

good tape because it was checked, and it automatically copies.

In the data output a common fault that occurs, even when a good IS --

tape is checked and/or a good FS tape Is written, Is the fault CONT as

65

.~~~~. . . ...

*~~T 0 -

o4 o 04

r m %,- 0i -r 1a w 66. 00 oC, 0 06 OO6 .41 6.

CL x0 6 a 6 c C) -- Z 4460 4Bk 0

ED6 )O 00.0 13 X 03 56 6 ow w IQ" o-

CL :i 6 4 6 6 L ~ 04

60 4 -1 -I I a, . 0. 0406 >6.. 0 w or 6

601 o z "-6- 0 z 0 .. - .-- 04.

-3 0. 6. CL 4r 40 0 . a .

IX -. -0.z1 0IS z.6 In C;1J

-tJ 6.C, C,- 0a, .C - o 0 J 0- . 010- 0.6 *I - I, 03 0-0.1~~ . 0 - 0 0 0 . O

6 Z -..ao w -J c- -w I- I6 fu W 6j *O.J'Lt6 -

*Xo-'oS 0 a. a 6Z-.. w0 a. or wCL Cc6-0 ak 0 .~ w w CL-0 coI400 o.

't -L 60 0- 0 0wU1C- .4 60 L- I-6-4K oro V 1

0-- z. q x C)6l4. 46 64 0 - 0

-, 6W40 r~r.1o 6Kw- o

0- 0. o t

Q- 0- . w 6 k 0,-- $-/z~~ ~ ~ Cz C : AZ LL m 6k 6 6601K oto

a I da 60 6

o CL D0 tj La f.- 60I

LI. ;~ 64- -I do.

1.L 1. ", I0 6i 01. .

6l * I 6- 6x66'....)- ,65 - I

- ~ ~ >4-) 6 - -I 0 4 6s.f.w Lr.- .c -bo- - - - - - - - 6 ~ 6-N .

Cl~ ~~~~~~~~~ ~~~~~ 0066 .0 .6 - - - - - - 6.6-------- 0- - - -

CL- 04 -~. - - - -- -l -. - - - -- - -

C,0 C, * r 5o. A a .aaa . 51 .- eaaa -60aL cr;7 r >~~x rrrIt c rrr£

> CK 0,an - -: - -6--

664 0 0 0 - 6.5 IX.c6- 6 WO 7)i-6D.3D6 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 3 66.664 6 --- 6 -Cr-o.o)acLa..616uL*~~66I a

Cs~ ~ -j o- i. (1-- - - - - - oo.t

6 - 0 - S O a a0 LU 0 D > m 6A.6 4Aor,10 I~lr 06 w- 7 ,V ,C.-N ,nI ,0 .

6~ ~ -5 - -- - -5~ 3 - -~a4.. 0- - -6. 6 -. 6

.2T 6 a 6-4000

.56 O0IL-C 6 6~ .L.456. ------ 0(j x~o 5O6- - 2 C 65 ---- ~0*..-66..6-6. -6U'6~- 64. 4 - 2 . 6 6 66

6 2- 0 0 4 6 f0~44~ Z4 ~ ~ 2 4 1 4 66 ~ CCCC 4CCZ CCC4r. ~ C E fu 0000-- 00* 0> 0 ~6J66A06fl 0.60

66L

------------------------------- CL- . ... . . . . . . .. .. . . . . . . . . . . . . . . . . . . . .

in figure 56. This CONT fault is a cautionary warning only, and refersto the continuity of tile data. For example if the data were plottedmagnetic field (nanotesla) vs time (sec) and the slope were greater than+5 nt/sec, then the CONT fault woild be output. In f Igire 56 there is apair of parentheses after FAULT: CUNT, and in,;idc the parentheses isthe number of times the slope was greater than +5 sit/sec for that minute.On a magnetically active day, many C(NT faul ts ,ay occur. For this pro-gram there will be anywhere from 1-10 pag-es of output , de-pending on thenumber of CONT faults that occur, as in I igure 56. Only the CONT faultis legal; all other falts are fatal.

If a tape is not an IS tape, then when it is read a fault of NWDS(number of words) will occur and the program aborts Itself as in figure58. This fault of NWDS indicates that the tape being read is not 1300words per record, where 1300 words per record is the form of the IS tape.In figure 58 there is a pair of parentheses after FAULT: NWDS and inside

the parentheses is the actual number of words per record. The date en-

tered for the Julian date question in the example of figure 56 was theactual date on the IS tape, thus the program was able to read the tape

correctly and give a positive response. However, there might be some

situations where there is a negative response. For example if for somereason one was not sure whether or not the IS tape was labeled with the

correct date, then the PS program could be used to check this problem.

There are 4 possible faults associated with the Julian date that couldoccur as follows:

FAULT: IYR = Year value incorrect

FAULT: NMO = Month value incorrect

FAULT: IDA = Day of year value incorrect

FAULT: NDA = Day of month value incorrect

One of these faults, more than one, or all of these faults could occurat a time. An example of these faults can be seen in figure 59. In

these examples one can see that after the fault message on each linethere is a pair of parentheses which contains the actual number that ison the tape for either the year, month, or day. Also, when a fault deal-

ing with The Julian date occurs the program has to be aborted manually,otherwise the program will continue to print every fault for each minute

of the day until it reaches the end, then states a BAD TAPE - NUXBER OF

ERRORS: and aborts itself as in figure 60. Finally, if a parity error

exists on the IS tape, then the program states that there is a TAPE READPROBLEM arid aborts itself as in figure 61.

67

. ... .. . . . . .. . . . . . . . . . . . . . . . . . . .

------------------ a

m4 4 a C 4 0 4 0 a.aQ D-MM LCLa L .>LO>050>OKO>OKO c 0Z <-z a ooooZ~~ 4 --- Lt

- m

000-0-0-00-00- - ILa

an ~ - -a-a-Ca- A a m aWW I

Cr- aez a li z a )- m~

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K 0 0 0 0 0 0 0 0 I - CM . a d MI I

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44 4 4 44 4 4 4 axx x I9 I . o > r- az C. a 9a- -- -a a- -a 9. a- -a a- -L- us I~ - .a0 - . g

i~~a~a4-> xa I. a aa

Kr C: Z: x aa a:1, - W _) . CL

S4 S441 14444 - - - - - - - -4a -n a 0 a 4 ac C KCt

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LLL1 Z-0a- C, 014 W1> (i DD nD D" ' 40a 2:4aL LID 01- (k wI4

144-a.I- ;: -. 0 1C ' "cwLU, -..xa 01 <) - ) 4

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Ta~~~~M ad . U I- a- .@ a.a.-- 4 I-C at - 4A

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~-U rr a-1 ) 1 a) L aC~,14 170. 1 a a8

jW V

FILMWED -

8-85

DTIC