Post on 21-Feb-2022
Department of Navigation Systems
Cybernetica ASAkadeemia tee 21, 12618 Tallinn, ESTONIA
Phone +372 639 7991Fax +372 639 7992
E-mail ekta @ekta.eeURL: www.ekta.ee
Industrial Member of International Associationof Lighthouse Authorities
Cybernetica AS has been approvedby Bureau Veritas Quality International
to the quality management system standard:ISO 9001:2000
2002
AID
Sto
NA
VIG
AT
IO
NA
ID
Sto
NA
VIG
AT
IO
N
Ca
talo
gu
eF
lash
ers
&C
om
mu
nic
ati
on
Con
troll
ers
Estonian National Maritime BoardLighthouse and Hydrographic Department
Lasnamäe 48, Tallinn 11413, ESTONIAPhone +372 620 5600
Fax +372 620 5606E-mail: hnt@vta.ee
Refefence customer:
NOTE: The manufacturer reserves the right to introduce changesto the specifications without prior notification, as necessary.
Vers. 20020821R1
Department of Navigation Systems EKTACall +372 639 7991Fax +372 639 7992E-mail: ekta@ekta.eeAkadeemia tee 21, 12618 Tallinn, ESTONIAVisit our website at www.ekta.ee
Cybernetica AS
AIDS to NAVIGATIONAIDS to NAVIGATION Flasher E862
Features
Designed to provide a highly reliable subsystem, the unit uses the latest surface mount andmicrocontroller technologes to provide a compact, Eurocard device incorporating several
new features needed for remote monitoring and control. Functionally it is fully compatiblewith the flasher E863
E862 flasher units are designed for switching both filament lamp or LED lanterns, and forsending of diagnostic and emergency messages via local area network (LAN). The flasher utilises
Pulse Width Modulation to achieve a very high degree of regulation of the effective voltage of thelantern .
The E862 flasher provides the user with convenient, setting up by a service computer device thatmay be used in both stand alone and system applications. Special care has been taken to minimise
the power consumption in the idle state which is essential when using the flasher in primary
battery powered buoys. In case of application in hard environmental conditions, the E862 flashermust be put into a hermetic enclosure
Precision effective voltage regulated filament output
Lampchanger or twin filament or LED-lantern operation
Programmable automatic control of flashing
Sending diagnostic and emergency messages to the monitoringand control centre via LAN and the communication controller
Simple settting up and programming using a service computer
Daylight-dependent switching on and off of the flashing mode by a photosensorand sending the actual switching time messages to the monitoring and control centre
Built-in monitoring and control LAN interfacefor the communication with other units
Autosynchronisation by internal clock/calendar to be adjusted either by a GPS receiver,or by any other flasher within the control and monitoring system
ektaTM
Input voltages 8 to 30 V DC
Nominal voltage of the lamp 10.30 V rms
Output power 2 to 100 W
Current consumption
in sleep mode
in the pause of flash
in flash
1 mA
1.2 mA
6 mA
Flash length any multiples of 10 ms up to 60.01 s
Period time any multiples of 20 ms up to 655.35s
Character changing setting by service computer
Character stability -20 ppm - 6.67 ms
Stability of built-in clock ± 20 ppm (without GPS correction)
Daylight control delayed switching by external photosensor,
delay programmable by service computer.
Sending switching time messages to the center
Inputs RS485, photocell, control input of reserve
units, voltage measurements
Outputs two stage filament with automatic changeover
to standby filament, RS485, control output of
reserve units
Temperature range -30°C to +55°C*(IEC 60068-1,2,14)
Relative humidity max 90% at +35°C (IEC 60068-2-11)
Dimensions eurocard 100x160x17 mm
Weight 0.2 kg
Specifications
Flasher E862AIDS to NAVIGATION
Edition: September 2000
*) the temperature range can be optionally extended
Department of Navigation Systems EKTACall +372 639 7991Fax +372 639 7992E-mail: ekta@ekta.eeAkadeemia tee 21, 12618 Tallinn, ESTONIAVisit our website at www.ekta.ee
Cybernetica AS
AIDS to NAVIGATIONAIDS to NAVIGATION Flasher E863
Features
Designed to provide a highly reliable subsystem, the unit uses the latest surface mount andmicro-controller technologyes to provide a compact, robust self-contained solid state device
incorporating several new features
E863 flasher units are designed for switching both filament lamp and/or LED lanterns and fortransmission of diagnostics and emergency messages via local area network (LAN). The flasher
utilizes Pulse Width Modulation to achieve a very high degree of regulation of the effectivevoltage of the lantern
The E863 flasher provides the user with a convenient, simple setting set up by a service computerdevice that may be used in both stand alone and system applications. Special care has been taken
to minimize the power consumption in the idle state which is essential when using the flasher in
primary battery powered buoys
Precision effective voltage regulated filament output
Lampchanger or twin filament or LED-lantern operation
Programmable automatic control of flashing
Daylight-depending switching on and off of the flashing modeby a photosensor and sending the actual switching time messagesto the monitoring and control centre
Autosynchronisation by internal clock/calendarto be adjusted either by a GPS receiver or byany other flasher in the control and monitoring system
Sending diagnostic and emergency messagesto the monitoring and control centre via LANand communication controller
Simple setting up and programming using a service computer
Built-in monitoring and control LAN interfacefor the communication with other units
ektaTM
Input voltages 8 to 30 V DC
Nominal voltage of the lamp 10.30 Volt rms
Output power 2 to 100 W
Current consumption
in sleeping mode
in the pause of flash
in flash
1 mA
1.2 mA
6 mA
Flash length any multiples of 10 ms up to 60.01 s
Period time any multiples of 20 ms up to 655.35 s
Character changing using a service computer
Character stability -20 ppm
Stability of built-in clock ± 20 ppm (without GPS correction)
Daylight control delayed switching by external photosensor, delay
programmable by service computer. Sending
switching time messages to the center
Inputs RS485, photosensor, control input of reserve units,
voltage measurements
Outputs two stage filament with automatic changeover to
standby filament, RS485, control output of reserve
units
Ambient air temperature from -30°C to +55°C* (IEC 60068-2-1,2,14)
Relative humidity up to 98% at temperature +35°C (IEC 60068-2-3)
Dimensions 83 mm diameter, 52 mm high
Weight 0.4 kg
Specifications
Flasher E863AIDS to NAVIGATION
C1
+BAT
-BAT
GN
D
CO
DE
OU
TR
ES
IN
LDR
GND
+D
AT
-DA
T
E863PLINKERL1
L2
Nº
ULD
ILD
FAIL
D1
TEMP
D2
FLASHER
UL
DL
2L
1C
1+
BA
TIN
10
,5-
30
VD
C
-BA
TG
ND
FL
AS
HE
RP
LIN
KE
RE
863
57,5
±0,1
Ø83
2ava Ø6,5 H
Edition: September 2000
*) the temperature range can be optionally extended
Department of Navigation Systems EKTACall +372 639 7991Fax +372 639 7992E-mail: ekta@ekta.eeAkadeemia tee 21, 12618 Tallinn, ESTONIAVisit our website at www.ekta.ee
Cybernetica AS
AIDS to NAVIGATIONAIDS to NAVIGATION Disc-Flasher E864
Features
Designed to provide a highly reliable subsystem, the unit uses the latest surface mount and
micro-controller technologies to provide a compact, disc - shaped device for the use in
lanterns, based on 150 mm LED-disc Light Sources Family E801, E802, E803, E804. It
incorporates several new features needed for remote monitoring and control. It has been
designed for the long-term work in field conditions
The E864 flasher provides the user with a convenient , simple setting up by a service computerdevice that may be used in both, stand alone and system applications. Special care has been taken
to minimise the power consumption in the idle state which is essential when using the flasher inprimary battery powered buoys
Programmable automatic control of flashing
Autosynchronisation by internal watch/calendarto be adjusted either by GPS receiver or by any other
flasher in the control and monitoring system
Built-in monitoring and control LAN interfacefor the communication with other units
Daylight-dependent switching on and off of the flashing mode by a photosensorand sending the actual switching time messages to the monitoring and control centre
Simple setting up and programming using a service computer
Sending diagnostics and emergency messages to monitoringand control centre via LAN and the communication controller
ektaTM
AIDS to NAVIGATION
Specifications
Disk-Flasher E864
+P
WR
AN
_INB
STR
GND
SHLD
RE
SE
T-D
AT
+D
AT
RE
SC
OD
E
LDR
-BAT
TEMP
-IN
+B
AT
PLINKER E864LED FLASHERUin = 5...20V
ESTONIAphone: +372 639 7900
fax: +372 639 7901N°
G
ND
+PWR
M
OD
SH
LD
SE
T
Ø120
25
30,5
Ø16,4
Edition: September 2000
*) the temperature interval can be optionally extended
Input voltages 6 V or 12 V DC
Nominal voltage of the lamp 10.30 V
Current consumption
in sleep mode
in the pause of the flash
in flash
1 mA
12 mA
25 mA
Flash lenght any multiples of 10 ms, up to 60.01 s
Period time any multiples of 20 ms, up to 655.35 s
Character changing using a service computer
Character stability ±20 ppm - 6.67 ms
Stability of built-in clock ± 20 ppm (without GPS correction)
Daylight control delayed switching by external photosensor,
delay programmable by service computer.
Sending switching time messages to the center
Inputs RS485, photocell, control input of reserve
units, voltage measurements
Outputs RS485, LED-disc control
Temperature range -30°C to +55°C* (ICE 60068-2-1,2,14)
Relative humidity max 90% at +35°C (ICE 60068-2 3)
Dimensions diameter 150 mm
Weight 0.5 kg
Department of Navigation Systems EKTACall +372 639 7991Fax +372 639 7992E-mail: ekta@ekta.eeAkadeemia tee 21, 12618 Tallinn, ESTONIAVisit our website at www.ekta.ee
Cybernetica AS
AIDS to NAVIGATIONAIDS to NAVIGATION 1000W Flasher E175
Features
E175 is a microprocessor based unit for the control of high-power lighthouses with lanterns
up to 1000 W, to be used in the EKTA’s 1000 W lighthouse control system E602. It consists
of a control unit, an 1kW DC/DC converter, a 50 W DC/DC converter for secondary power
supply, a 5 V voltage stabilizer and of Echelon LAN interface
Programmable automatic control of flashing and control of lampchanger
Precision effective voltage regulated filament output
Autosynchronization by the internal clock/calendar to beadjusted either by GPS receiver or by any other flasher
in the control and monitoring system. This feature can be
used for synchronization of flashing of leading lights
Built-in monitoring and control interface Echelon LANfor the communication with other units
Control of the secondary ( reserve) system of the lighthouse
Daylight-dependent switching on and off of the flashing modeby a photosensor and sending the actual switching time messagesto the monitoring and control centre
Control of Diesel a generator as a secondary energy supply
Control of reserve system of the lighthouse
Sending diagnostics and emergency messagesto the monitoring and control centre via Echelon LANand the communication controller (state of the powersupplies, lamps, and lampchanger)
Simple setting up and programming using a service computer
ektaTM
AIDS to NAVIGATION
Specifications
1000W Flasher E175
Edition: September 2000
Input voltages 110 to 160 V DC (primary power supply)
13 to 15,5 V DC (secondary power supply)
Nominal voltage of the lamp 110 or 120 V +3 V, -1.5 V
Output power 100 to 1000 W
Current consumption (15V) 70 mA from the secondary power supply
Flash/pause segment
duration
(1 to127)x(10 to 250) ms
Number of flash/pause
segments
2 to 16
Stability of built-in clock ± 3x10-5
Daylight control delayed switching by external photosensor,
Inputs ±140 V, 15 V secondary power, Echelon LAN
(I/O), photo- and temperature sensors,
lampchanger signals
Outputs 110 V 10 A filament, +14 V system power,
control of reserve system, lampchanger motor
Temperature range -40°C to +55°C (IEC 60068-2-1,2,14)
Relative humidity max 98% at +35°C (IEC 60068-2-3)
Dimensions 70 x 210 x 314 mm
Weight
Department of Navigation Systems EKTACall +372 639 7991Fax +372 639 7992E-mail: ekta@ekta.eeAkadeemia tee 21, 12618 Tallinn, ESTONIAVisit our website at www.ekta.ee
Cybernetica AS
AIDS to NAVIGATIONAIDS to NAVIGATION Communication Controller
E924
Features
Designed to provide a highly reliable subsystem, the unit uses the latest surface mount and
microcontroller technologies to provide a compact, programmable device incorporating
several new features. It performs the communication between a lighthouse, or buoy, and the
monitoring and control centre, as well as between the nodes of the local area network (LAN)
within a lighthouse or buoy
Adjusting of the built-in clock/calendar and the clocksof other nodes according to the signals receivedfrom the control centre
Continuous checking of contact sensors (tampering, fire, etc.)and sending of the emergency messages to the control centrewhen necessary
Recording of the statistical data about the qualityof the communication sessions, and the timesof last 32 communication sessions
Standby mode of mobile phone betweenthe communication sessions in order to save energy
Communication with the computer of the control centrevia GSM-900 mobile telephone network
Communication with up to 22 nodes connected to the LAN
Regular polling of LAN nodes (other units of lighthouseor buoy equipment) in every 15 minutes
Regular communication sessions in accordance withthe pre-programmed time schedule
Sending of the emergency messages to the control centrewithout delay
Responding to the commands and inquiriesof the regional control centre
Periodical measurement and recording of 5 analogueinput signals in every 15 minutes.The results of last 256 measurements are always available
ektaTM
Specifications
Communication Controller E924AIDS to NAVIGATION
210
70
M4x6
180
132±1
183±1
45
132±1
E924 N°
1
2
3
4
5
6
7
8
9
10
11
12
13
14
RS-232
GSM
MT
GND
+U
DAT-
DAT+
AN1
AN2
AN3
AN4
AN5
AN7
AN6
PROG
+AL
CA
UT
ION
!
DE
VIC
EIS
SE
AL
ED
.O
PE
NIN
GT
ER
MIN
AT
ES
TH
EG
UA
RA
NT
EE
.
ES
TO
NIA
ph
on
e:
+3
72
63
97
90
0fa
x:
+3
72
63
97
90
1
No
.
AN
DM
ET
EL
EF
ON
E9
24
DA
TA
PH
ON
E
Edited: September 2000
*) the temperature range can be optionally extended
Input voltages 9 to 20 V DC, optionally up to 28 V
External sensors voltage 5 V output resistance of voltage source 1 k�
Current consumption
in standby mode
in alert mode
in communication mode
1.5 mA (GSM receiver OFF)50 mA max (GSM receiver ON)
250 mA max ( GSM transceiver ON)
Communication media GSM-900 mobile telephone network
Minimal GSM input level -70 dBm ( 70.7 �V on 50 � load)
Power of GSM transmitter 2 W
Communication data rate 9600 bps
Local area network (LAN) RS485 interface, 9600 bps, maximum length 1.2 km
Stability of built-in clock ± 100 ppm (without GPS correction)
Voltage range on 5 analogue
measurement inputs 0 to 5 V, 8 bit resolution
Inputs, outputs GSM antenna, GSM handset, RS485, RS232, 5analogue measurement inputs, contact sensors
Temperature range -20°C to +55°C* (IEC 60068-2-1,2,14)
Relative humidity max 98% at +35°C (IEC 60068-2-3)
Dimensions of controller 70x210x183 mm
Weight 2.4 kg
Department of Navigation Systems EKTACall +372 639 7991Fax +372 639 7992E-mail: ekta@ekta.eeAkadeemia tee 21, 12618 Tallinn, ESTONIAVisit our website at www.ekta.ee
Cybernetica AS
AIDS to NAVIGATIONAIDS to NAVIGATION Communication ControllerE924 with GPS support
Basic features
GPS features
Short Message Service (SMS) features
The new version of the Communication Controller E924 offers in addition GPS receiversupport and mobile phone Short Message Service (SMS) support
Regular polling of the LAN’s nodes (other equipment units of a light )in every 15 minutes
Programmable time scheduling of regular communication sessions,and immediate sending of the emergency messages to the control centre
Responding to the commands and inquiriesfrom the regional monitoring and control centre
Measurement and recording of 5 analogue input signals in every 15 minutes, the last 256 recordsare accessible. Checking of contact sensors (tampering, fire, ect.) and sending of emergency
messages to the control and monitoring centre
Recording of statistical data about the quality, timeand results of last 32 communication sessions
Programmable scheduling of mobile phone standby modein order to save energy
Receiving and periodical recording of the GPS signalswith the period specified by the user
Adjusting of the built-in clock/calendar basedon the GPS signals and sending of the time adjustment signals
to the other nodes of a light
Sending of the SMS emergency messages to the user-specifiedmobile phone in case of receiving the emergency signals
from the inputs AN4 and/or AN5
Responding with SMS messages describing the current stateof a light to received SMS inquiries
Execution of commands issued by servicing personnelin the form of SMS messages or forwarding them to other units
within a light (e.g. switching ON/OFF of a light at daytime)
Sending of the synchronizing SMS messages to the user-determinedmobile phone (a communication controller of another light)
Communication between a light and the regional monitoring and control centre.Communication over the LAN of a light with up to 21 nodes
ektaTM
Specifications
Communication ControllerE924 with GPS supportAIDS to NAVIGATION
Red. September 2000
*) the temperature range can be optionally extended
Input voltages 9 to 20 V DC, optionally up to 29 V
External contact sensors
voltage5 V, output resistance of voltage source 1 k�
Current consumption
in standby
in alert mode
in communication mode
current of GPS receiver
1.5 mA (GSM receiver OFF)
50 mA max (GSM receiver ON)25 0mA max ( GSM transceiver ON)
80 mA
Deviation of coordinates
with 95% probability�15 m
�100 m "with selective availability activated"
Communication media GSM-900 mobile telephone network
Minimum GSM signal level -70 dBm (input 70.7 �V on 50 � load
Power of GSM transmitter 2 Wmax
Communication data rate 9600 bps with GSM and LAN, 4800 bps with GPS
receiver
Local area network (LAN) RS485 based, maximal length 1.2 km
Voltage range on 5 analogue
measurement inputs 0 to 5 V, 8 bit resolution
Inputs, outputs GSM antenna, GSM handset, RS485 , 2xRS232
(one for GPS receiver), 5 analogue measurementinputs, contact sensors
Ambient air temperature from -20°C to +55°C* (IEC 60068-2-12,14)
Relative humidity up to 98% at temperature +35°C (IEC 60068-2-3)
Dimensions 70x210x183 mm
Weight 2.4 kg
Department of Navigation Systems EKTACall +372 639 7991Fax +372 639 7992E-mail: ekta@ekta.eeAkadeemia tee 21, 12618 Tallinn, ESTONIAVisit our website at www.ekta.ee
Cybernetica AS
AIDS to NAVIGATIONAIDS to NAVIGATIONCommunication Controller E925with GPS support
Basic features
GPS features
Short Message Service (SMS) features
Regular polling of the LAN nodes (other equipment units of a light ) in every 15 minutes
Programmable time scheduling of regular communication sessionsand immediate sending of the emergency messages to the control centre
Responding to the commands and inquiries from the regional monitoring and control centre
Measurement and recording of 5 analogue input signalsin every 15 minutes, the last 256 records are accessible.
Checking of contact sensors (tampering, fire ect.) and sendingemergency messages to the control and monitoring centre
Recording of statistical data about the quality,time and results of last 32 communication sessions
Programmable scheduling of mobile phone standbymode in order to save energy
Reception and periodical recording of the GPS signalswith the period specified by the user
Adjusting of the built-in clock/calendar basedon the GPS signals and sending of the time adjustment
signals to the other nodes of a light
Sending of the SMS emergency messagesto the user-specified mobile phone, in case of receiving
the emergency signals from the inputs AN4 and/or AN5
Responding with the SMS messages describingthe current state of a light to received SMS inquiries
Execution of commands issued by servicing personnelin the form of SMS messages or forwarding them
to other units within a light (e.g. switching ON/OFFof a light at daytime)
Sending of the synchronizing SMS messages to the user-specifiedmobile phone (communication controller of another light)
The new version of the Communication Controller E925 offers in addition GPS receiver
support and the mobile phone Short Message Service (SMS) support
Communication between a light and the regional monitoring and control centre.Communication over the LAN of a light with up to 21 nodes
ektaTM
AIDS to NAVIGATION
Specifications
Communication Controller E925 with GPS support
4
89±0,2
160
130
171
100
103±0,2
110
1,6
16max
32
kinnitusklamber 4ava Ø3,4
2xØ2,9
20max
X1
1
X7
X5
No.Akadeemia tee 21GTALLINN,ESTONIA
ANDMETELEFON E925DATA PHONE
1 2
1
4
11
18
25
6
95
1
1 2
46
33
20
8
1
X9.5
X9
.4
PPS
RT2
CT2
RT1
V12
R35
C13
C14
C15
C16
C17
C18
C19
R53
R40
R37
+Ue
R32
R25
R24
R38
C10
X13
X12
R50
R13
R14
R15
R34
R21
R16
R17
R18
R19
R20
R9
R52
R7
R8
R1
C34
C7
V10
C5C6
C4
T3
V16
V15
V8
V7
D19
D22
R39
R42
R26
R36
V17
C21
V11
V14
R28
X8
V19
R11
924.A20r3
C30
+Usw
R6
C3
C1
V6
C8
R44
R45
T1
R33
R31
R23
R46
R30
C33
C35
R43
T4
C23GND1
C24
C25
R10
V9
R5
V3
X11
.2X
11.1
X9
.3X
9.2
X9
.1
D21
C12
R27
TD2
RD2
TD1
RD1
C11
C22
R29
R51 B1
+U
GND
IGN
X6
X4
V13
D16
D15
D7
T2
R49
R48
R47
C28
C31
C32
D18
R12
D20
D17
C29
R41
D14
D13
D11
R22
X3
C20
D12
R4
C9C26
C27
21
Q1
R3
R2
C2
X2
Z1
V5
V4
V1V2
D10
D9
D8
D5
D2
D1
D3
D4D6
Edited: September 2000
Input voltages 9 to 20 V DC, optionally up to 28 V
External contact sensors
voltage5 V, output resistance of voltage source 1 k�
Current consumption
instandby mode
in alert mode
in communication mode
current of GPS receiver
1.5 mA (GSM receiver OFF)
50 mA max (GSM receiver ON)220 mA max ( GSM transceiver ON)
80 mA
Deviation of coordinates
with 95% probability�15 m
�100 m "with selective availability activated"
Communication media GSM-900 mobile telephone network
Minimum GSM signal level -70 dBm (70.7 �V on 50 � load)
Power of GSM transmitter 2 Wmax
Communication data rate 9600 bps with GSM and LAN, 4800 bps with GPS
receiver
Local area network (LAN) RS485 based, maximal length 1.2 km
Voltage range on 5 analogue
measurement inputs 0 to 5 V, 8 bit resolution
Inputs, outputs GSM antenna, GSM handset, RS485 , 2xRS232
(one for GPS receiver), 5 analogue measurementinputs, contact sensors
Temperature range -20°C to +55°C* (IEC 60068-2-1,2,14)
Relative humidity max 98% at +35°C (IEC 60068-2-3)
Dimensions Eurocard 100 mm x 170 mm
Weight 0.3 kg
*) the temperature range can be optionally extended
� light ON/OFF status� lamp ON/OFF status� switch to next lamp status� synchronization of flashing� controller test� start Diesel engine� stop Diesel engine� clock synchronization� time synchronization� reset
Department of Navigation EKTACall +372 639 7991Fax +372 639 7992E-mail: ekta@ekta.eeAkadeemia tee 21, 12618 Tallinn, ESTONIAVisit our website at www.ekta.ee
Cybernetica AS
AIDS to NAVIGATIONAIDS to NAVIGATION Local Area Network
on A-BUS
Features
When designing a modern control and monitoring systems of aids to navigation, the
modularity and openness of the system are the most important features for many
customers. This means that any system could be changed by adding or taking away of
equipment units without changing the whole system. It allows also building up a system
gradually, step-by step in accordance with the financial and technical resources of a
customer
Sending messages to other nodes and receiving messagesfrom other nodes about current state of a node (power supplyvoltage under the load and standby, current consumption,statistics, logical state etc.)
Exchange messages with the remote control and monitoringcentre through communication controller
Exchanging information with other nodes
� read working statistics� get identification information� clear error status� get device status� write new flashing pattern� get measurement results
Issueing commands to other nodes:
Communication
Controller
Flasher
(main)
Flasher
(reserve)
GPS
locator
Telemetric
instrument 1
Telemetric
instrument n
Flasher of
another light
Diesel Engine
Interface
Telemetric
meteo-instr.
Up to
1.2km
A-BUS
The modularity and openness of EKTA’s systems are achieved by designing the system asconsisting of standard hardware and software modules which can be combined in different
modifications for different systems. To connect the modules together at the lights level,there is the local area RS-485 twisted pair network, or A-BUS. To this network up to 23
nodes or equipment modules in any combination can be connected
ektaTM
AIDS to NAVIGATION
Specifications
Local Area Network on A-BUS
Edition: September 2000
Connecting equipment units (nodes) into the local area network
+DAT -DAT
Node 1(equipment unit)
+DAT -DAT +U GND
Node 2(equipment unit)
+DAT -DAT
Node 23(equipment unit)
+ DAT
- DAT
+U=12VGND
Shield
A noiseproof version of network cable
if needed
Physical standard of the network RS-485Transmitter signal voltage between
“+DAT” and “-DAT”
by sending logical “1”
by sending logical “0”
+1.5 to +5 V- 1.5 to -5 V
Receiver signal voltage between
“+DAT” and “-DAT”
by receiving logical “1”
by receiving logical “0”
+0.2 to +7 V-0.2 to -7 V
Input resistance of the receiver >12 kOhmTotal Summary load of the network >54 kOhmCommunication media twisted pair or shielded twisted pair,
recommended type 24AWG (0.2mm2)with line impedance 100…300 Ù
Length of the line up to 1.2 km, when the length exceeds50 m then using 120 Ù terminalresistors at both end is recommended
Number of network nodes up to 23Data rate 9600 bpsData format start bit, 8 data bits, marker bit, 1 or
more stop bitsData coding NRZ, asynchronous, half-duplexAddressing individual or groupLength of message from 6 bytes up to 131 bytes maxMessage package format destination address, own address, length
of package, user’s data up to 126 bytes ,checksum, marker