JRC JMR-92 Series Field Service Manual page 115

Connection procedure with Gyro Compass
1. Turn S1 off
Gyro Compass and Gyro Interface Circuit will be disconnected.
2. Switch TB1 for the type of your Gyro Compass
Synchro type Gyro Compass: Set TB1 to "SYNC"
Step type
3. Set S3 as follows for your Gyro Compass and Speed Log according to Table. 2.5.7 GIF S3
settings.
S2-1 :
S2-2/3 :
S2-4 :
S2-5 :
S2-6 :
S2-7/8 :
4. Set TB401-403 and TB19 as follows if your Gyro Compass signals are less than 22V.
1-2 SHORT CIRCUIT:
2-3 SHORT CIRCUIT:
5. Connect your Gyro Compass and Speed Log to J823 of CMJ-554 Gyro Interface Circuit as
follows.
Gyro and Log
Synchro Gyro
Step Gyro
Pulse Log
6. Turn S1 on
Your Gyro compass will be connected to the Gyro interface circuit.
7. Check your Radar Echo and True Bearing Value to make sure that your Gyro Compass is
working correctly.
8. Set S3-4 to "REVERSE" if your Radar Echo and True Bearing have Reverse rotation.
Gyro Compass: Set TB1 to "STEP"
Gyro type (STEP / SYNC)
Gyro speed ratio
The direction of rotation
Gyro alarm time (LONG / SHORT)
Log alarm
Log settings
Factory default.
Set this if voltages of step Gyro signals are less than 22V.
Table. 2.5.8 GIF input section
J823
R1, S1, S2, S3 and R2.
1, 2, 3 and 5
( 5 for common )
P+, P-
(ON / OFF)
Description
24 - 115Vac
(50 / 60 / 400Hz)
21.6 - 70V
0-50V, Vth = 2V.
(5V, 1k ohm Internal Pull-up)
2-57 Chapter 2 System Configuration