NATIONAL RADIO ASTRONOMY OBSERVATORYGreen Bank, West Virginia

ELECTRONICS DIVISION INTERNAL REPORTNO. 294

HAWAII S AND X RECEIVER SYSTEM

S. D. WHITE

April 1993

TABLE OF CONTENTS

1.0 General ..................................................................................................................... 3

2.0 S and X Receiver Package ....................................................................... ...........3

2.1 S and X Feed..................................................... ........................ ................ 32.2 Dewar Assembly ...................................................................... .............. 32.3 Phase Locked Oscillator Box .......................................................................4

2.3.1. Phase Detector Module ......... ....................................................... 4

2.4 Analog Optical Fiber Optic Link .................................................................42.5 Phase Caliberation ........................................................................................ 52.6 Receiver Control and Monitor ...................... ....................................................... 52. 7 System Noise Temperatures. . ...............................................5

3.0 VLBA Interface ..........................................................................................................

4.0 Acknowledgements .................................................................................

5.0 References .................................................................................................................. 6

TABLES1 Worst Case Axial Ratio Measurements 72 Feed Performance .................................................................................................3 System Noise Temperature ............................................................................74 Navnet VLBI .................................................................................................5 USNO VLBA ................................................................................. .. .. . ...... . . 8

FIGURE1 Control Room Display .................................................................. ............. 9

DRAWINGSA17222D001 .............................................................................. ..................... 10A17222B001 .................................................... ............................................... 12

BLOCK DIAGRAMSHawaii Receiver .......................................Composite ...............................

APPENDICESA S/X Feed, A17222B010B IF Amplifier Detector, A17222B004C Phase Locked Oscillator, A17222B007D Analog Optic Box, A17222B005E 500 MHz Divider, A17222B003F MCB InterfaceG Receiver Card BoxH VLBA Interface

1315

2

1.0 General

This report documents the receiver system of the USNO 20 meter antenna located inHawaii. The design is the same as the receiver systems used on the 85 foot antennas of theinterferometer, with an increased bandwidth and other improvements. An electronics divisioninternal report 287 1 documents the 85 foot receivers, and a paper2 submitted to .11)L gives a detaildescription of the components of the receiver.

The S/X band system receives the 2210 to 2345 and 8210 to 8932 MHz frequency bandsand downconverts them to baseband. The receiver consists of a dual-band feed, which is a singlecorrugated horn with two circular waveguide concentric openings at the throat a S/X four channelcryogenic dewar package3; front-end amplifiers, mixers and filters; an IF amplifier and detectormodule; a phase locked oscillator module, which generates all the front-end LO's, an analog opticmodule, which receives the 500 MHz reference and modulates the rF, along with the returned 500MHz reference signal on to an optic fiber. The IF system is designed to accommodate a Mark IIIVLBI recorder, a VLBA DAR recorder, or the existing CDP receiver with either of the recorders.A list of drawing numbers is given in document A17222D001.

2.0 S and X Receiver Package

The receiver is mounted in a standard NRAO Green Bank front end box, 60" by 28" by28", supported in the focus and polarization mount by a 45" diameter circular flange. The receiverbox is kept at a temperature of 25 C + or -3 C, with thermoelectric heat pumps and a proportionalcontroller. The block diagram and parts list of the receiver are given in documents B172221001and A17222B001, respectively. As shown on the block diagram, both the right and left-handcircularly polarized signals are received. The two polarizations at each frequency are designated X-R, X-L and S-R, S-L. The signal flow is from the feed through the low noise amplifier. Afteramplification in the low noise amplifier, the signals are limited in frequency by the band passfilters. The RF amplifiers increase the signal level ahead of the mixer to minimize the mixercontribution to the overall noise temperature. The Intermediate Frequency signals from the mixerare amplified and detected to get the total power for monitoring receiver performance. The X-Rand S-R IF signals, along with the 500 MHz Local Oscillator reference signal, are combined in theIF triplexer.

2.1 S and X Feed

A dual-frequency dual-polarized feed was designed for this receiver. It illuminates thereflector antenna with an f/d of .43, with minimum spillover. From feed patterns obtained on thetest range, the computed aperture efficiency was 65% at S-Band, and the spillover and scatterednoise was less than 3.5 degree Kelvin. At X-band feed patterns predicted 60% aperture efficiencyand less than 0.9 degree Kelvin spillover. The worst case axial ratio measurements and the feedperformance is given in Table 1 and 2, respectively. An outline drawing of the feed and the partslist is given in documents D17222M005 and A17222B010, respectively.2

2.2 Dewar Assembly

The receiver uses low noise HEMT amplifiers cooled to 15 Kelvin, with a closed-cyclehelium refrigerator system. The S-band inputs to the dewar are through rectangular waveguide.The X-band input is a circular waveguide, with the polarizer inside the dewar. Typical gain andnoise temperatures for the S-band channels are 33 dB and 12 Kelvin. The X-band noisetemperatures at the dewar flange are 14 Kelvin, with a gain of 35 dB.3

3

2.3 Phase Locked Oscillator Box

The local oscillator system generates the X-band and S-band LO signals by phase locking a7600 MHz and 2000 MHz oscillator to a 100 MHz VCO. The fifth harmonic of the 100VCO, which is derived from a step recovery diode comb generator, is compared to a 500 MHzreference from the hydrogen maser, and the error signal is used to lock the VCO.

The local oscillators can be switched on and off from the control computer. This allows oneto determine if offsets exist in the total power monitors used for system temperature measurements.

2.3.1 Phase Detector Module

A phase detector, loop amplifier and lock indicator module are used in the phase lock loopin the receiver front end. The schematic and parts list are given in B17222S002 andA17222B009, respectively. Signal and reference input levels are 0 dBn-t, The mixers MI. and M2perform as phase detectors. The signal input to the lock detector mixer M2 is shifted 90 degrees bythe lumped constant quarter wave transmission line so it's output is maximum when the oscillatorand reference are locked. If the lock indicator level drops below -.5 volt level set by pot Kl,power is applied to the 555 timer to generate a square wave. This signal is injected into the loopamplifier to sweep the oscillator frequency to aid in attaining lock. The phase lock loop naturalfrequency and damping are set by R14, C15 and R13.

2.4 Analog Optical Fiber Optic Link

The fiber optic link consists of the analog optic box located in the front-end box, the fiberoptic cable connecting the front-end box with the control room electronic, and the optical receiverlocated in the VLBA interface. The analog optical box (A17222B005) houses the opticaltransmitter, an IF triplexer, two RF switches, and the optical receiver, One RF switch selectseither the X-R or the X-L for input to the triplexer. The other RF switch selects either the S-R orthe S-L input to the triplexer. The triplexer combines the selected X-band IF and the selected S-band IF with the returned 500 MHz reference. The transmitter and receiver operate at opticalwavelength of 1300 nanometer. The laser diode transmitter is amplitude modulated by the radiofrequency signals with a maximum frequency range of 10 to 1500 MHz. Single mode fibers areused to carry these broadband signals. To minimize the noise from the optical transmitters, thereflections in the fiber must be low. Low reflection optical connectors were installed on thetransmitters and receivers. Fusion splices are used to interconnect all optical fibers. The fiberoptic cable contains four single mode fibers for use with the analog links and four multimode fibersfor digital links.

The if transmission loss with the transmitter connected directly to the receiver is about 15dB. The maximum input power level is +10 dBm, and with narrow band signals the S/N at thereceiver is 120 dB/Hz. When broadband signals are transmitted through the link, the noise levelincreases due to intermodulation. With the 230 MHz wide S-Band IF and the 866 MHz X-BandIF signals transmitted on the same link, the S/N at the control room is calculated to be 24 dB.

2.5 Phase Calibration

The phase calibration system uses the Mark III VLBI Phase and Group delay calibrator togenerate the 1 MHz comb of frequencies. These signals are combined with the noise calibrationsignals through a 6 dB directional coupler, as shown in document B172221(001, and injected intothe cal port on the dewar for each of the four channels. The input 5 MHz to the delay calibratorantenna unit is produced by dividing the 500 MHz local oscillator reference signal by 100.

4

2.6 Receiver Control and Monitor

The receiver has six power supply voltages and other analog signals which are monitoredand displayed at the Control Building. There are also separate on/off controls for each of the localoscillators and the noise calibration signals. The control and monitor is implemented using aVLBA standard interface board mounted in an RFI tight enclosure in the receiver box. This boardcontains a microprocessor, an A-D Converter and multiplexer, as well as digital I/O. The MCBInterface Box contains the standard interface card, the receiver control card (A17222S007), theanalog multipexer card (A17222S008), and the fiber optic interface board (A17222S009). Theanalog multiplexer card scales all the detected signals by a resistive divider and multiplexes them tothe four A-D converters. The relative address RA3 through RA7 enables the four analogmultiplexers via logic located on the receiver control card, while RAO through RA2 determineswhich signals are output. The receiver control card multiplexes the digital command and monitorsignals onto the sixteen I/O bits of the standard interface card. All functions are read once everytwo seconds. Once the data is converted to a serial data stream , the data is modulated onto themultimode fiber on the fiber interface board. A receiver on the board converts the optical signal toa serial data stream input to the standard interface card.

The output from the computer is through the serial port, which is operated at 56 kilobaud.The computer interface box (A 17222S010) receives and transmits the serial data from thecomputer. The computer program provides a real time display receiver status as shown in Figure 1.The lock status of the S-Band, X-Band and 100 MHz VCO are displayed. The on/off state of thenoise source, LO, and the type of polarization are displayed along with the LO level and HEMTLED voltage. The refrigerator second stage temperature and the receiver box temperature areshown along with the cryogenic compressor supply and return pressures. A total power readingfrom a square law detector for each channel is displayed as a voltage, along with a more precisereading used for pointing measurements. The transmitter and receiver status are shown, as well asthe MCB status registers.

2.7 System Noise Temperatures

The system noise temperatures were measured in the receiver test building. For thesemeasurements, the hot load was a microwave absorber at ambient temperature placed just in frontof the feed. The cold load was the sky, assumed to have a temperature of 5K. Measurementswere wide band, using the total power detector monitors located in the front-end box. Systemtemperature for the SIX band and right and left hand polarization were determined using the hotand cold loads. In addition, the noise cals were fired and the cal values were determined from thesystem temperatures& The results are given in Table 3.

3.0 VLBA Interface

The function of this equipment is to receive the S-Band, X-Band, and returned 500 MHzfrom the optical fiber, and convert the IF to the frequencies needed by the backends. The VLBAinterface also contains a 500 MHz VCO which is locked to the 5 MHz reference from theHydrogen Maser. The 500 MHz signal is used as an LO for all downconversion, transmitted tothe frontend over the fiber optic link and used as a reference for all LO's. The 500 MHz is also thereference signal for the round trip phase measurement system. A listing of the S-Band and X-Band IF converter frequencies for VLBI and VLBA are tabulated in Table 4 and Table 5,respectively. The composite bandpass, which includes the S-Band IF, the X-Band IF, and the 500MHz reference frequency, is separated by the triplexer. The X and S bands are then filtered anddownconverted to baseband. The IF amplifier/detector module provides a total power monitor,which are displayed on the front panel, of the X and S bands.

5

The interface is designed to accommodate a Mark III backend, a VLBA DAR backend, orthe existing CDP receiver with either of the backends. In order to use the CDP receiver, the CDPX input must be connected to item 8, and the CDP S input to item 20 as shown in the blockdiagram. Items 10 and 13 should be interchanged in the CDP X-A DAR signal path. A blockdiagram and parts list are given in documents A172221002 and A17222B002, respectively.

4.0 Acknowledgements

Funding for the construction of the receiver was provided by the U.S. Naval Observatoryfor operation with the 20 meter Kokee Park antenna located in Hawaii.

The receiver was constructed from the design of the late J.R. Coe, under the direction ofB.J. Levin. B. Shank and J. Oliver did the majority of the construction and testing of the receiversystem.

G. Behrens designed the S/X feed, which was fabricated by the Green Bank MachineShop. R. Norrod designed the dewar assembly.

F. Ghigo wrote the software for monitoring the receiver and provided scientific input.

5.0 References

1. EDIR NO. 287, "85-3 S and X Receiver System," J. R. Coe (April 1990)

2. NRAO paper submitted to JPL, "Design and Implementation of a Low-noise Prime Focus SOCReceiver System for Radio Astronomy," R.D. Norrod, G.H. Behrens, F.D. Ghigo, and B.J.Levin (December 11, 1992)

3. EDIR No. 283, "A S/X Four Channel, Cryogenic Dewar Package," R.D. Norrod (April 1989)

4. Memo "System Temperature of USNO/KPGO Receiver," B.J. Levin

6

TABLE 1Worst Case Axial Ratio Measurements

Radiation S-Band X-BandAngle From Maximum MaximumBorsight Axial Ratio Axial Ratio

o 1.1 dB 3.0 dB

20 1.6 dB 4.0 dB

40 1.9 dB 6.0 dB

60 2.6 dB 32.0 dB

TABLE 2Feed Performance

Avg Edge Taper Calculated CalculatedE-Plane H-Plane Efficiency Spillover

S-Band2.35 GHz 16.94 dB 19.14 dB 0.65 3.0 K

X-Band8.6 GHz 17.05 27.88 0.62 0.88 K

TABLE 3System Noise Temperature

Band Tsys TcalLig.

X-R 29.6 5.5X-L 32.6 6.5S-R 27.0 7.2S-L 24.7 6.8

7

TABLE 4NAVNET VLBI

Sky Frequencies [1■4Hi1 BB F uency

1 8210.992 8220.993 8250.994 8310.995 8420.996 8500.997 8550.998 8570.999 2217.9910 2222.9911 2237.9912 2267.9913 2292.9914 2302.99

1 8212.992 8252.993 8352.994 8512.995 8732.996 8852.997 8912.998 8932.999 2220.9910 2230.9911 2250.9912 2305.9913 2340.9914 2345.99

610.99620.00650.99710.99820.99900.99950.99970.99717.99722.99737.99767.99792.99802.99

BB Fr

612.99652.99752.99952.99632.99752.99812.99832.99720.99730.99750.99805.99840.99845.99

TABLE 5USNO VLBA

Sky Frequencies CMHz1

1 Poi: RCP1 BoxTemp 25.97 C1 Pcal T: 48.45 C

4.697.03

Receiver Status 1992-276 182705

%and :locked off on 3.66Xband :locked off on 4.53100MHz:locked

0.46 -10.00 -0.540.47 -10.00 -0.782.25 10.00 -0.292.12 10.00 -0.34

15K 302.88 I Supply(psi): 6.3550K 297.51 I Return(psi): 1.46

1 Vac 10.00 1 Ref.Dr(amp): 0.01

laser:normrecvr:low

32V: 31.84 15V: 14.9824V: 23.82 -15V: -14.9012V: 12.05 +5V: 4.97 1

-5V: -5.01

I adr_pe:0 bad SYN:1 Mk...pa:85413 good ct1:424:31 ctl_pe:0 good dat:896

CONTROL ROOM DISPLAY

FIGURE 1

9

A17222B002A17222B003

3/16/933/16/93

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VLBA Interface Drawer500 Mhz Divider

A17222B008A17222B009 3/17/93

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11

Drawing List: A17222D001 Date: 4/26/1993

Format PagesDrawinl Title Drawing NumberReceiver Control AssemblyAnalog Multiplex AssemblyHawii RCVR Front End Box

A17222A008A17222A009A17222B001

ACADACADQPRO

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IF Triplexer Box B17222M006 ACADAnalog Optic BoxFront End Cabling Dia D17222M008

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D17222M012D17222M013

3/29/933/29/93

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STX Orthromode Transducer D17222M014S/X Back Short D17222M015

D17222M016D17222M017

7/29/912/28/903/29/933/29/93

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11

11111

X Band Waveguide DisconnectX Band Circular WaveguideS/X Dielectric Tuning PlugX Band Dielectric Feed ConeS/X Feed SeptumReceiver Card Box500 Mhz Divider PC

S/X Feed IrisS/X Waveguide Shim

D17222M018D17222M019D17222MO20D17222MO21D17222MO22D17222MO23A17222P001

10

500 Mhz Divider PC A17222Q001 ACAD 1IF Amplifier Detector PC A17222Q002 ACAD 1500 Mhz Phase Detector PC A17222Q003 ACADW Triplexer A17222Q004 ACAD 1IF Amplifier Detector A17222S001 313/93 ACAD 1500 Mhz Phase Detector A17222S002 3/26/93 ACAD500 Mhz Divider A17222S003 3/9/93 ACAD 1Control Interface Card A17222S004 3/6/93 ACAD 2Monitor Interface Card A17222S005 4/1/93 ACAD 1IF Triplexer A17222S006 3/17/93 ACAD 1Receiver Control A17222S007 3/21/93 ORCAD 2Analog Multiplex A17222S008 4/22/93 ORCADFiber Interface A17222S009 4/22/93 ORCAD 1Computer Interface A17222S010 4/23/93 ORCAD 1PLO Box Wiring List A17222W001 3/30/93 QPRO 2Analog Optic Box Wiring List A17222W002 3/30/93 QPRO 1IF Amp Det Wiring List A17222W003 3/30/93 QPRO 1Rec Card Box S3 A17222W004 3/30/93 QPRO 2Receiver Card Box A17222W005 3/30/93 QPROVLBA Interface Drawer A17222W006 3/30/93 QPRO 1,VLBA Interface Power A17222W007 3/30/93 QPRO

,

MCB Interface Box A17222W008 3/30/93 QPRO 1

Drawing Number: A17222B001 Date: 3/16/93Title: Hawaii Receiver Rev: A

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RT

APPENDIX A

SIX FEEDA17222B010

Drawing Number: Al 7222B010 Date: 3/29/93Title: SIX Feed Rev: A

ITEM01

34

4A

7

101112131415

QT DESCRIPTION1 SIX Feed Assembly1 Large Feed Section1 Small Feed Section1 Tuning Section1

Polarizer1

Dielectric Polarizer1

Orthomode Transducer1

Orthomode Transducer1

Back Short1

Iris (no drawing)1 Waveguide Shim1 X-band WG Flange1 X-band Circular WG1 Dielectric Tuning Plug1 Dielectric Feed Cone

PART NUMBER Dl 7222M005Dl 7222M009D17222M010D17222M011D17222M012Dl 7222M013D1722211/1014D17222M014D17222M015D17222M016D17222M017D17222M018D17220/1019 D17222 MO20Dl 7222MO21

MANUFACTURENRAONRAONRAONRAONRAONRAONRAONRAONRAONRAONRAONRAON RAONRAONRAONRAONRAO

1 Septum B1 7222MO221 Front End Cabling Diagram D17222M008

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APPENDIX B

IF Amplifier DetectorA17222B I I

Drawing Number: A17222B004 Date: 3/16/93Title: IF AMP-Detector Rev: A

14

15 4 R7 R21,R35,R49

17181920

21222324 25

C2,C12,C22,C32

HP

12 13 14 15 16 4 Al A2,A5,A67 28 29 2

10 411 412 413 12

ITM QTY DESIGNATION1

A3 A4

R1 R15,R29,R43R2 R16,R30,R44R3 R17,R31,R45

DESCRIPTIONAssembly

PC ArtworkSchematicIF Am lifierIF Amplifier10 dB Coupler10 dB CouplerRes 5% 1/4w 47 OhmRes 5% 1/4w 2K OhmRes 5% 1/4w 475 Ohm

R5 R8,R10,R19,R22,R24,R33,R36,R38,R47,R50,R52

PART NUMBERAl 7222A002Al 7222M003Al 7222P002Al 7222Q002Al 72225001QBH-817QBH-174PDC-10-5TDC-10-2

MANUFACTURENRAONRAONRAONRAONRAOQ-BitQ-BitMini-CircuitsMini-Circuits

Mechanical Box PC Board

Res 5%1/4w 1K OhmR4 R6,R18,R20,R32,R34,R46,R48

Pot 10T 1/4w 20K OhmRes 1% 1/4w 8.06K Ohm

16 R9 R23,R37,R51,R11,R12,R25,R26Res 1% 1/4w 49.9K Ohm

4 R39,R40,R53,R54 Res 5%1/4w 314K Ohm4 R13,R27,R41,R55 Res 5% 1/4w 59K Ohm4 R14,R28,R42,R56 Res 5% 1/4w 100K Ohm10 Cl ,C3,C11,C13,C21,C23,C31,C33,C41,C42

Cap 0.1 uF ceramicCap 0.022 uF ceramic

4 C4,C14,C24,C34 Cap 1000pF ceramic4 C7,C17,C27,C37 Cap 1.0 uF ceramic4 Dl thru D4 Back Diodes BD-4

Ul ,U2,U1 1,U12,U21,U22,U31,U33Op Amps OP-27GN

26 U3,U13,U23,U33 Op Amps OP-07CN

A

QB

H-8

17P

DC

-10-

5I N

PU

Tr. rn

OU

TPU

.

+15

V

Circu

it 4

XL

45

Ci

0.1

A

—L

C42

= _

—

15 V

r-t-7

C31

0.1

BD

-4

032

R43

R44

0.02

247

2KN

OTE:

A17

2228

004

PARTS

LIST

A172

22Q

002

ART

WO

RK

A17

222P

002

PC B

OARD

Al 7

222M

003

MEC

HAN

ICAL

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O—

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MT

IMIA

ts

MA

N

IF A

MP—

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ECTO

RU

MW

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t.e.

13/9

3

KA

M

952

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t Poi

nt1K

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To

32 (

E)

Vio

let W

ire

ai r

OF

A172

22S0

01

R4

20K

OFF

SET

C5

R10

1KCircu

it 1

XR

0.02

Tes

t Poi

ntQ

BH

-817

,--

( C

7 1.0

R12

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6KT

o 32

(A

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row

n W

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177

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R720

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1 -=-

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50.

1B

D-4

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475

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,U23

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y W

ire

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To

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H)

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1D0-

10-2

TD

C-1

0-2

C11

0.1

80

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R15

R16

472K

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-4

R29

R30

472K

R18

20K

OFF

SET

011

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4 " 1

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F

R20

R21

20K

8.06

KG

ain

R32

20K

OFF

SET

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R34

R35

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8.06

KG

ain

C15

0.02

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F473 .9

KU1

2

7:7

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0.02

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749

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U22

R24

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+513

C16

—1.0

1'

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I( 0

27

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9 R

40

1.0

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1

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t Poi

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1

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R48

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ain

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pF

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149

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8004

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0. W

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01.1

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1 ;4

\20

\93

"""' B17

222M

003

T

System: Hawaii SIX ReceiverAss'Y: IF Amp/Det BoxType:Func: InterconnectingDwg: Al 7222W003

Date: 3/30/93By: S.D. WhiteSheet: 1 OF 1Designation: J1,J2

Pin# Function To

J1-A Return Term BoardJ1-B +15V Term BoardJ-1-C -15V Term BoardJ1-D

J2-A X-R Total Power J2-M (Rec Card)J2-B S-R Total Power J2-N (Rec Card)J2-D S-L Total Power J2-P (Rec Card)J2-E X-L Total Power J2-R (Rec Card)J2-H Total Power Return J2-S (Rec Card)

APPENDIX C

Phase Locked OscillatorA172223007

ITEM

34

89

1011121314151617

QT DESCRIPTION1 PLO Assembly1 Mechanical Box

4 5-500 Mhz Splitter2 100 Mhz Amplifier1 7600 Mhz PLO1 20 Db Coupler(S Band)1 2000 Mhz PLO1 Power Amplifier1 100 Mhz BPF1 Comb Generator1 500 Mhz BPF1 500 Mhz Am Vier1 500 Mhz Amp(30 dB)1 500 Mhz Phase Detector2 6 Db Coupler(X band)

MANUFACTURENRAONRAONRAOVectronMini-CircuitsQ-BitMiteciAnarenMitegMini-CircuitsReatelHPK&LAvantek Mini-CircuitsNRAONarda

B1 7222M002B1 7222K004CO233-9516ZFSC-2-1QBH-9-176 PLM-074-076-A-0-20P10616-20PLC-019-021-A-0-20PZHL-1-2W6B2-100-1851133002A3B120-500-U50/0/0UTO-1003ZFL-2000Al 7222B0094015C-6

PART NUMBERAl 7222A003

1 PLO Block Diagram1 100 Mhz VCO

Drawing Number: Al 7222B007 Date: 3/16/93Title: PLO Box Rev: A

Drawing Number: Al 7222B009 Date: 3/17/93Title: 500 Mhz Phase Detector Rev: A

ITM MY DESIGNATION12

11

3 14 1

16 4

38 19 2

10 211 612 213 114 115 116 117

1819 120 121 122 123 124

Al ,A2,A3,A40A1,0A2,0A3MV1Ml, M2R1,R2,R3,R4R5 thru R10R11,R12R13R14R15

R17,R18,R22,R23,

R19R20R21R26

DESCRIPTIONAssemblMechanical BoxPC BoardPC ArtworkSchematicRF Am lifierOp AmTimerPhase Det MixerRes 5% 1/2w 300 OhmRes Chip 5% 20 OhmRes Chip 5% 51 OhmRes 1% 1/4W 1K OhmRes 1% 1/4W 9.76K OhmRes 5% 1/2W 1K

R24,R25,R27,R29Res 1% 1/4W 10K OhmRes 1% 1/4W 511K OhmRes 1% 1/4W 49.9K OhmRes 1% 1/4W 470 OhmRes 1 % 1/4W 100K Ohm

PART NUMBERAl 7222A004Al 7222M004Al 7222P003Al 72220003Al 72228002MSA-304OP-07SN555MPD-2

CRCW1206CRCW1206

MANUFACTURENRAONRAONRAONRAONRAOAvantekAnalog DevicesSignetics Mini-Circuits

DaleDale

R16 Res 1% 1/4W 511 Ohm

R28 Res 1% 1/4W 20K OhmR30 Res 1% 1/4W 2.5M Ohm

10 Cl,C12,C14,C18,C19,C21,C22,C23,C24,C20Cap Chi

25 C1326 C1527 C1628 C1729 1 C2530 1 Kl31 1 K232 4 Ll, L2, L3, L433 2 L5,L634 2 L7,L835 2 Q1,Q236 1 Q338 2 D1,D3,D439 1 D2

0.1uF Cap Chip 1000pFCap 0.047 uFCap 0.47 uFCa luFCa Chi 6.2 FPot Trim IT 1K OhmPot Trim 1T 20K OhmInd 4.7uHInd 1.5uHInd 16nH 3T 0.064" D)TransistorTransistorDiode SiliconDiode Zener 5V

3329H3329H

2N39042N22191N456

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System: Hawaii SIX ReceiverAssY: LO BoxType: 37 Pin D (P)Func: LO Internal WiringDwg: A17222W001

Pin# Function

Date: 3/30/93By: S.D. WhiteSheet: 1 of 2Designation: J1

Color

WI-1/BK

WH/BK/BK/RWH/BK/BK/YBH/BK/BK/GNWH/BNBK

WH/R

WH/Dark BNWH/LT BNWH/ORWH/YOR

WH/BLWHNWH/GYCoaxCoax ShieldCoaxCoax ShieldWH/BK/RWH/BK/ORWH/BK/YWH/BK/BLWH/BKNWH/BK/GYBNWH/BK/BNBKBK

1 24 V (ZHL-1-2W)2 100 MHZ OSC Tuning Voltage3 2 GHZ OSC Tunning Volt Monitor4 7.6 GHZ OSC Tunning Volt Monitor5 Signal Return6 20 V Return (OSC Power)7 +/- 15V Return(Phase Det)8 +15V (Phase Det)9 24V Return (ZHL-1-2W)10 100 MHZ OSC Lock11 7.6 GHZ OSC Lock12 2 GHZ OSC Lock13 +20V(2GHZ OSC)14 +20V (7.6 GHZ OSC)15 -15V (Phase Det)16 +15V (Out-Of-Lock CKT)17 +15V (QBH-9-176)18 +15V (100 MHZ OSC)19 +15V (UTO 1003)20 7.6 GHZ OSC LVL DET SIG21 7.6 GHZ OSC LVL DET Return22 2 GHZ OSC LVL DET SIG23 2 GHZ OSC LVL DET Return24 +15V (ZFL-2000)25 +15V Return (ZFL-2000)26 +15V Return (UTO-1003)27 +15V Retrun (100 MHZ OSC)28 7.6 GHZ OSC Lock29 2 GHZ OSC Lock30 100 MZH OSC Lock31 Out-Of-Lock Return32 +15V Return (QBH-9-176)33 +15V Return (Out-of-Lock Ckt)34 Spare35 Spare36 Spare37 Spare

System: Hawaii S/X ReceiverAss'Y: LO Box CableType: 37 Pin D (S)Func: LO Box InterconnectDwg: Al 7222W001

Date: 3/30/93By: S.D. WhiteSheet: 2 of 2Designation: J1

Pin# Function To

Term BoardJ2-CC (Rec Card)J2-DD (Rec Card)J2-EE (Rec Card)J2-FF (Rec Card)J2-HH (Rec Card)Term BoardTerm BoardTerm BoardJ2-MM (Rec Card)J2-NN (Rec Card)J2-PP (Rec Card)J2-RR (Rec Card)J2-SS (Rec Card)Term BoardTerm BoardTerm BoardTerm BoardTerm BoardJ2-C (Rec Card)

J2-E (Rec Card)

Term BoardTerm BoardTerm BoardTerm BoardLight On LO BoxLight On LO BoxLight On LO Box

Term BoardTerm Board

1 24 V (ZHL-1-2W)2 100 MHZ OSC Tuning Voltage3 2 GHZ OSC Tunning Volt Monitor4 7.6 GHZ OSC Tunning Volt Monitor5 Signal Return6 20 V Return (OSC Power)7 +/- 15V Return(Phase Det)8 +15V (Phase Det)9 24V Return (ZHL-1-2W)10 100 MHZ OSC Lock11 7.6 GHZ OSC Lock12 2 GHZ OSC Lock13 +20V (2 GHZ OSC)14 +20V (7.6 GHZ OSC)15 -15V (Phase Det)16 +15V (Out-Of-Lock CKT)17 +15V (QBH-9-176)18 +15V(100 MHZ OSC)19 +15V (UTO 1003)20 7.6 GHZ OSC LVL DET SIG21 7.6 GHZ OSC LVL DET Return22 2 GHZ OSC LVL DET SIG23 2 GHZ OSC LVL DET Return24 +15V (ZFL-2000)25 +15V Return (ZFL-2000)26 +15V Return (UTO-1003)27 +15V Retrun (100 MHZ OSC)28 7.6 GHZ OSC Lock29 2 GHZ OSC Lock30 100 MZH OSC Lock31 Out-Of-Lock Return32 +15V Return (QBH-9-176)33 +15V Return (Out-of-Lock Ckt)34 Spare35 Spare36 Spare37 Spare

APPENDIX D

Analog Optic BoxA172228005

Drawing Number: A17222B005 Date: 3/16/93Title: Analog Optic Box Rev: A

ITM QTY DESCRIPTION1 12 13 14 1

16 17 2

19 1

Optical ReceiverIF Triplexer

-IF SPDT Switch/Driver500 MHZ Amplifier Wideband Amplifier

AssemblyPART NUMBERAl 7222A003Al 7222K003B1 7222M007LDAT-2200LDAR-2200Al 7222B006ZSDR-230QBH-9-160QB-9-175

MANUFACTURENRAONRAONRAOLaser DiodeLaser DiodeNRAOMini-CircuitsQ-BitQ-Bit

SchematicMechanical BoxOptical Transmitter

RA

DIA

LL

AD

APT

OR

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od

CO

N R

OTO

RS

NO

TE: A

17222A

003 A

SS

EM

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Y

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AR

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ION

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Drawing Number: Al 7222B006 Date: 3/18/93Title: Triplexer

ITM CITY DESIGNATION DESCRIPTION PART NUMBER MANUFACTURE

34

7

Al 7222A005Al 7222M006Al 7222P004Al 72220004Al 7222S006PDC-10-5

NRAO NRAONRAONRAONRAOMini-Circuits

101112131415161718

1111111 Li1 L22 L3,1..41 L5

L6,L71 Cl1 C21 C31 C4,C51 C6,C101 C7,C91 C8

AssemblyMechanical BoxPC BoardPC ArtworkSchematic10 dB Coupler Ind 30 nH (5T 0.082"D) Ind 32 nH (4T 0.111" D)Ind 6 nH (2T 0.064"D)Ind 9 nH (21 0.082"D) Ind 21 nH (3T 0.082"D)Cap 15 pF ceramicCap 8.2 F ceramicCap 3.9 pF ceramicCap 3.3 pF ceramicCap 22 pF ceramicCap 6.8 pF ceramicCap 47 pF ceramic

1

AN

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AL

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Note

: A17222A005

Al 7222B006

Al 7

222M

006

Al 7222P004

A17222Q

004

Ass

embly

Part

s Lis

tM

echan

ical

PC B

oard

Art

Work

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8500 M

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AN

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-

Cl

15

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600 M

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IGH

PASS

Input/

Outp

ut

PD

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0-5

05

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06 22

07

6.8

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NAL

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IO A

STRO

NO

MY O

BSE

RVATO

RY

GREEN

BAN

K, W

V 2

4944

System: Hawaii SIX ReceiverAss'Y: Analog Optic Box Date: 3/30/93Type: Amp 9 Pin, Amp 5 Pin,SMA By: S.D. WhiteFunc: Interconnecting Sheet: I OF 1Dwg: Al 7222W002 Designation: J1 -J8

Pin# Function To Color

J1 -A +15V Term BoardJ1 -B Return Term BoardJ1 -C -15V Term BoardJ1 -D +5V Term BoardJ1 -E Return Term BoardJI -F -5V Term BoarJ1 -H OPT Tx Alarm J2-H (Rec Card) BoxJ1 -J OPT Rx Alarm J2-J (Rec Card) Box

J2-A TTL/IF Switch J2-X (Rec Card) Box X-R or X-LJ2-B TTL/IF Switch J2-Y (Rec Card) Box S-R or S-IJ2-D +5V Term BoardJ2-E Return Term BoardJ2-H TTL Return Term Board

J3 X-R IF Input SMA/LO boxJ4 S-R IF Input SMA/LO BoxJ5 X-L IF Input SMA/LO BoxJ6 S-L IF Input SMA/LO BoxJ7 500 MHZ Input SMA/LO BoxJ8 500 MHZ Output SMA/L0 Box

Note: IF Switches: RF-1 = S+R - X-R I RF-2 = S-L - X-L

DE:G

N 11

1,DA

TE.

RES

CA

LD

NO

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C L

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1.78

2

00

■••

••■

•

APPENDIX E

500 MHz DividerA17222B093

533

+15

VR

4Li

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C102 R

5N

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1

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(•

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3

+5

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e: A

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bly

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222M

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001

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rd

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24944

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NO

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500 M

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ER

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23.0

. WHI

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0

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003

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8

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l R

6

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l

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,

APPENDIX F

MCB INTERFACE

ITM QTY DESIGNATION1

2 13 1

DESCRIPTIONAssemblyMechanical BoxPC Board

PART NUMBERAl 7222A001Al 7222M001Al 7222P001

MANUFACTURENRAONRAONRAO

PC ArtworkSchematicRes 5% 1/4W 110 OhmRes 5%1/4W 36 Ohm

Al 7222Q001Al 72225003

NFtA0NRAO

4 15 16 2 R1,R37 1 R2

11 712 1

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Drawing Number: Al 7222B003 Date: 3/16/93Title: 500 Mhz Divider

8 1 R4 Res 5% 1/2w 267 Ohm

1920 12122 123 124 225

R5,R7,R9,R10R6,R8Cl thru C70809,013010011012014L1L2L3L4L5AlU1,U2D1 thru D5

Res 5%1/4w 1K OhmRes 5% 1/4w 100 OhmCap 0.1 UF chip 50VCap 3300 pF ceramicCap 100 pF ceramicCap 120 pF ceramicCa 220 F ceramicCap 4700 pF ceramicCap 300 pF ceramicInd 2.2 uHInd 4.4 uHInd 3.3 uHInd 0.3 uHInd 0.22 uHAmp RFTwo Modulus PrescalerDiodes, Silicon

18 1

410 2

AVX 12050104 AT050M AVX

MC120131_HP 5082-2835

MSA 0304 AvantekMotorolaHP

Drawing Number: A17222B012 Date: 4/28/93Title: MCB Box Rev: A

ITM QTY DESCRIPTION

1 1 Mechanical Box2 1 Analo Multi .lex Card3 1 Receiver Control Card4 1 Fiber Interface Board

1 Interconnecting Wire List

PART NUMBER

D17222MO24A17222A009A17222A008 A17222S009A17222W008

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1 5 deg Temp 21 J5-6 22

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Spare -Spare 17 Aux Heater 18

19 FE 100MHZ 20S-L LO Lock 21 S-R LO Lock 22X-L Lo Lock 23 X-R LO Lock 24Rx Opt Power 25 Laser Status 26Ground 27

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System: Hawaii SiX ReceiverAss'Y: MCB Interface BoxType: 37 Pin D (P)Func: Monitor InputsDwg: A17222W008

Date: 3/30/93By: S.D. WhiteSheet: 1 OF 4Designation: J6

Pin# Function Color

1 XR Total PWR Expanded2 XL Total PWR Expanded3 SR Total PWR Expanded4 SL Total PWR Expanded5 SR Total PWR6 XL Total PWR7 XR Total PWR8 SL Total PWR9 7.6 GHZ OSC Level10 Phase Cal Box Temp11 2.0 GHZ OSC Level12 Phase Cal Box 12V Monitor13 -5V PWR Supply14 +24V PWR Supply15 +32V PWR Supply16 FE Box Temp17 NC 2 (Spare Analog Input)18 Spare (DI-11)19 Spare (DI-10)20 Spare (DI-9)21 Aux HTR (DI-8)22 Spare (DI-7)23 FE 100 MHZ Lock (DI-6)24 Spare (DI-5)25 SR LO Lock (Dl-4)26 Spare (Dl-3)27 SR LO Lock (DI-2)28 RCV Optical PWR (DI-1)29 Laser Status (DI-0)30 Spare (DO-7)31 S Band Cal (D0-6)32 X Band Cal (DO-5)33 Noise Mod (D0-4)34 Spare (DO-3)35 XR OSC (On) (D0-2) -36 Spare (D0-1)37 SR OSC (On) (DO-0)

J4-7J4-9J4-29J4-31J4-51J4-53J4-75J4-77J4-11J4-13J4-33J4-35J4-39J4-59J4-61J4-83J4-85J3-15J3-16J3-17J3-18J3-19J3-20 Short = LockJ3-21J3-22 Short = LockJ3-23J3-24 Short = LockJ3-25 Short = LowJ3-26 Short = HighJ3-5J3-6 OFF (4V) ON (0.1V)J3-7 OFF (4V) ON (0.1V)J3-8 ON (4V) OFF (0.1V)J3-9J3-10 ON (4V) OFF (0.1V)J3-11J3-12 ON (4V) OFF (0.1V)

Pin#

System:Ass'Y:Type:Func:Dwg:

Function

Hawaii SIX ReceiverMCB Interface Box15 Pin D Conn,Amp 7 PinMonitor InputsAl 7222W008

To

Date: 3/30/93By: S.D. WhiteSheet: 3 OF 4Designation: J5,J7

Color J5-

XR Gate Monitor2 XL Gate Monitor3 SR Gate Monitor4 SL Gate Monitor5 Dewar VAC Monitor6 15 Deg Station Monitor7 50 Deg Station Monitor8 X LED Monitor9 5 LED Monitor10 NC311 NC412 NC11314 15 V Gnd15 15 VGnd

J7-A +15VB +/- 15 ReturnC -15VD +5VE +5 V ReturnF -5VH +5V

J4-55J4-57J4-79J4-81J4-19J4-21J4-41J4-43J4-63J4-87J4-89J4-65

J4-3,99 +J2-17J4-1,97+J1-38

Terminal BoardTerminal BoardTerminal BoardTerminal BoardTerminal BoardTerminal BoardTerminal Board

System:Ass'Y:Type:Func:Dwg:

Function

Hawaii SIX ReceiverMCB Cable15 Pin D,20 Elco(R)InterconnectingAl 7222W008

Date:By:Sheet:Designation:

To Dewar Card Cage

3/30/93S.D. White4 OF 4J5,J2

J2-Pin#J5-

1

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5

789101112131415

XR Gate MonitorXL Gate MonitorSR Gate MonitorSL Gate MonitorDewar VAC Monitor15 Deg Station Monitor50 Deg Station MonitorX LED MonitorS LED MonitorNC3NC4NCI

15 V Gnd15 VGnd A

APPENDIX G

RECEIVER CARD BOX

1 Monitor Interface1 Test Card Wire List

D17222MO23A17222S004 A17222S005A17222W004

NRAONRAONRAONRAO

234

1 Mechanical Box1 Control Interface

Drawing Number: A17222B011 Date: 4/26/93Title: Receiver Card Box Rev: A

ITM QTY DESCRIPTION PART NUMBER MANUFACTURE

1 Interconnectin Wire List A17222W005 NRAO

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System: Hawaii S/X ReceiverAss'Y: Receiver Card Box Date: 3/30/93Type: By: S.D. WhiteFunc: Test Card Sheet: 1 0F2Dwg: Al 7222W004 Designation: S3

Pin# Function Signal Level

1 100 MHZ OSC Tuning Volt Monitor2 2 GHZ OSC tuning Volt Monitor3 7.6 GHZ OSC Tuning Volt Monitor4 Signal Return5 X Band Noise Source Supply6 S Band Noise Source Supply78 -5 V Supply9 +5 V Supply10 +5 V Return11 -15 V Supply12 +/-15 V Return13 +15 V Supply14 +32 V Supply15 +32 V Return16 +24 V Supply17 +24 V Return18 100 MHZ OSC Lock19 7.6 GHZ OSC Lock20 2.0 GHZ OSC Lock21 +20 V OSC Supply22 +20 V 7.6 GHZ OSC Supply

+1.7 V+4.8 V+4.6 V

+29.4 V+29.4 V

-5.08 V+4.99 V-14.9 V

+15.08 V+32.06 V

+23.9 V

+20.2 V+20.1 V

System: Hawaii SIX ReceiverAss'Y: Receiver Card BoxType:Func: Test CardDwg: Al 7222W004

Date: 3/30/93

By: S.D. White

Sheet: 2 OF 2

Designation: 53

Pin#

A

J

V

X

Function

XR Total PWR ExpandedXL Total PWR ExpandedSR Total PWR ExpandedSL Total PWR ExpandedXR Total PWRXL Total PWRSR Total PWRSL Total PWR7.6 GHZ 050 LevelPhase Cal Box Temp2.0 GHZ OSC LevelFE Box Temp

Rec OPT Power NormalLaser Status NormalX Band Cal OffS Band Cal OffNoise Mod OnNoise Mod Square Wave7.6 GHZ OSC OnPhase Cal Box 12 V Mon2.0 GHZ OSC On

Signal Level

5.4V6.5V3.5V+5V-2.1 V

0.56 V

System: Hawaii SIX ReceiverAss'Y: Receiver Card BoxType: Elco 20Func: InterconnectingDwg: Al 7222W005

Date: 3/30/93By: S.D. WhiteSheet: 1 0F3Designation: J1

Pin# Function To

A +/- 15 V S2-N,S3-12,J2-S,J2-JJ,J2-FFB +15V S2-P,S3-13,J2-KKC -15V S2-M,S3-11,J2-TT

E +/ 5 V S1-5,S3-10F +5V S1-4,S3-9H -5V 53-8,J3-PJK +32V S1-17,53-14,J3-SL +32V Return S1-16,83-15

N +24V S1-22,S3-16,J3-R,J2-BB

System: Hawaii S/X ReceiverAss'Y: Receiver Card Box Date: 3/30/93Type: Elco 38 By: S.D. WhiteFunc: Interconnecting Sheet: 2 OF 3Dwg: A17222W005 Designation: J2

Pin# Function Color

A AD590 Box Temp Sensor + S2-R GYB AD590 Box Temp Sensor - S2-S WHC 7.6 GHZ OSC LVL Det Signal S2-CD 7.6 GHZ OSC LVL Det Return S2-DE 2.0 GHZ OSC LVL Det Signal S2-WF 2.0 GHZ 0$C LVL Det Return S2-XH Laser Tx Status Normal S3-S,J3-HH WHJ Receiver Optical PWR Normal S3-R,J3-FF GYK Phase Cal Box Temp+ 52-AL Phase Cal Box Temp- S2-BM X-R Total PWR S2-J,S3-E,J3-E GYN S-R Total PWR S2-20,S3-H,J3-H WHP J._ Total PWR 52-19,S3-J,J3-J BNR X-L Total PWR S2-H,S3-F,J3-F BLS Total PWR Return S3-12 BKT X Bnad Noise Source S1-18,S3-5U Return 51-193 Phase Cal Box 12V Mon S2-UW Phase Cal Box 12V Return 82-VX SpareY Spare

ZZ S-Band Noise Source 51-14,53-6AA Return 51-15BB +24V Supply 51-22CC 100 MHZ OSC Tuning Volt Mon 53-1 BNDD 2 GHZ OSC Tuning Volt Mon S3-2 GYEE 7.6 GHZ OSC Tuning Volt Mon 53-3 BLFE Signal Return S3-4 BKHH OSC PWR Return 51-2 BKJJ +1- 15V Return 53-4 BKKK + 15V Supply 53-13LL + 24V Return S3-17 BKMM 100 MHZ OSC Lock 53-18,J3-AA WHNN 7.6 GHZ OSC Lock 53-19,J3-EE WH/BLPP 2.0 GHZ OSC Lock S3-20,J3-CC WH/BNRR + 20 V 2 GHZ OSC Supply S1-1,S3-21 WH/YSS + 20V 7.6 GHZ OSC Supply S1-3,S3-22 WH/Y/BKTI - 1 5V Supply 53-11 OR

System: Hawaii S/X ReceiverAss'Y: Receiver Card Box Date: 3/30/93Type: Elco 38 (Green) By: S.D. WhiteFunc: To MCB Monitor In Sheet: 3 OF 3Dwg: Al 7222W005 Designation: J3

Pin# Function To

S2-K,S3-AS2-L,S3-B52-21,53-CS2-22,S3-DS3-E,..53-F,..S3-H,..S3-J,..S2-E,S3-KS2-F,S3-LS2-Y,S3-M52-Z,S3-YS3-8,..S3-16, ..S3-14,..

A XR Total PWR ExpandedB XL Total PWR ExpandedC SR Total PWR ExpandedD SL Total PWR ExpandedE SR Total PWRF XL Total PWRH XR Total PWRJ SL Total PWRK 7.6 GHZ OSC LevelL Phase Cal Box TempM 2.0 GHZ OSC LevelN Phase Cal Box 12V MonitorP -5V PWR SupplyR +24V PWR SupplyS +32V PWR SupplyT FE Box TempU NC 2 (Spare Analog Input)3 Spare (DI-11)W Spare (DI-10)X Spare (DI-9)Y Aux HTR (DI-8)

ZZ Spare (DI-7)AA FE 100 MHZ Lock (DI-6)BB Spare (DI-5)CC 2 GHZ Lock Fail (DI-4)DD Spare (DI-3)EE 7.6 GHZ Lock Fail (DI-2)FF RCV Optical PWR (DI-1)HH Laser Status (DI-0)JJ Spare (DO-7)KK S Band Cal (DO-6)LL X Band Cal (D0-5)MM Noise Mod (DO-4)NN Spare (DO-3)PP XR OSC (On) (DO-2)RR Spare (D0-1)SS SR OSC (On) (D0-0)TT

53-18,..

S3-20,..

53-19,..S3-R,J2-J53-S,J2-HJ2-X,J2-YSl-F,S3-T51 -C, 53-USi -D,S3-V

Sl-B,S3-X

Sl-A,S3-Z

APPENDIX H

VLBA InterfaceA17222BC32

Drawing Number: A17222B002 Date: 3/16/93Title: VLBA Interface Rev, A

ITM QTY DESCRIPTION11

AssemblyBlock Diagram

PART NUMBERAl 7222A007Al 7222002LDAR-2200Al 7222E3006

iviAi4UFACTURENRAONRAOLaser DiodeNRAO

1 Optical Receiver1 Triplexer5 500 Mhz Notch Filter

IF Amplifier2 Step Attenuator

Power Splitter2 1 GHZ LPF2 600 MHZ HPF

41N41-500/T180-0/0QBH-817TA-50ZFSC-2-5SLP-1000SHP-600

0-BitTrilithicMini- CircuitsMini-CircuitsMini-Circuits

ZFM-150 Mini Circuits3 IF Mixer1 850 MHZ LPF1 550 MHZ LPF

IF AMP/Detector1 900 MHZ LPF

1 GHZ HPF2 IF Amplifier6 Power Splitter1 IF Amplifier1 450 MHZ LPF1 ALC Amplifier

500 MHZ BPF1 500 MHZ PLO1 10 Db Coupler1 500 MHZ Amplifier1 Optical Transmitter

SLP-550Al 7222B0046L121-90051000-0/0SHP-1000QBH-9-176ZFSC-2-2ZFL-1000SLP-450

8L121-900/71000-0/0 K&LMini-CircuitsNRAOK&LMini-Circuits0-BitMini-CircuitsMini-CircuitsMini-Circuits

ALC-500M3B120-500/U50-0/0DPLO-5-500-0-15PZFDC-10-2QBH-9-160LDAT-2200

Avantek

1234567

1011121314151617181920212223242526

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Date:By:Sheet:Designation:

Pin#

System:Ass'Y:Type:Func:Dwg:

Function

Hawaii SIX ReceiverVLBA Interface DrawerBendix 14 PPower ConnectorAl 7222W005

3/30/93S.D. White1 OF 1J1

Color

AB +15 V QBH-9-176,ZFL-1000,QBH-60 BKC +15 V Optical Receiver, OSC BND +15 V ALC-500M,IF Amp/DetE - 5 V Optical TransmitterF -5 V Return Optical Transmitter GNG +/- 15 V Return Optical Recr,ALC-500M,Amp/Det BLH + 5 V OSC V

K +15 Return QBH-9-176,ZFL-1000,QBH-60 GYL +15 Return Optical Receiver, OSC WH

System:Ass'Y:Type:Func:Dwg:

Hawaii SIX ReceiverVLBA Interface DrawerBendix 14 PPower ConnectorAl 7222W006

Date: 3/30/93By: SD. Whit,.Sheet: 1 OF 1Designation: J1

Pin# Function To Color

B +15 V QBH-9-176,ZFL-1000,QBH-160 BKC +15 V Optical Receiver, OSC BND +15V ALC-500M,IF Amp/DetE 5 V Optical TransmitterF -5 V Return Optical Transmitter GNG +/- 15 V Return Optical Recr,ALC-500M,Amp/Det BLH + 5 V OSC V

K +15 Return QBH-9-176,ZFL-1000,QBH-160 GYL +15 Return Optical Receiver, OSC WH

System:Ass'Y:Type:Func:Dwg:

Hawaii SIX ReceiverVLBA Power DrawerBendix 14P,14P,3P,3PPower ConnectorAl 7222W007

Date: 3/30/93By: S.D. WhiteSheet: 1 OF 1Designation: none

Pin# Function ColorDC Power 1

A +5V TB 16 WHIR Ji -HB +5 V Return TB 17 J-1-NG +15V TB 12-13 J1 -DJ -15V TB 9 OR J1-MH +15V TB 10-11 BK J1-GC - 5 V TB 14 J1-EE -5 V Return TB 15 VVH/B:' J-1-F

DC Power 2G +15V TB 8 J1 -cH +15 V Return TB 7 J1 -L

AC Power

A AC+B AC-C Neutral

AC Power

A AC+B AC-C Neutral