7ļ¼2
JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.1 SETTINGS AT INSTALLATION
7.1.2 GYRO I/F Setting
a. Gyro Settings (STEP or SYNC)
The GYRO I/F circuit of the system is designed to be compatible with most types
of gyro compasses by simply setting the switches.
Before power-on operation can be performed, the switches S1, S2, S5, S6, S7 and
jumper TB105 on the gyro interface circuit (PC4201) must be set in accordance
with the type of your gyro compass by performing the procedure below.
The switches are factory-set for a gyration ratio of 180X and the step motor type.
Make sure of the type of the gyro compass installed on the own ship before
starting the procedure below.
Procedures
1) Set S5 to "OFF".
The gyro compass and GYRO I/F are cut off.
2) Set S6 and S7 in accordance with the type of your gyro compass.
There are two types of gyro compasses: one type outputs a step signal, and the other type
outputs a synchro signal. Make sure of the type of the gyro compass installed on the own
ship before setting the switches S6 and S7.
3) Set the DIP switch S1 in accordance with the type of the
compass.
The items to be set are listed below. For the settings, refer to Table 7-1ļ¼ Gyro and Log
Select Switches (S1 DIP Switch).
Step motor type: DC24V to DC100V
Synchro-motor type: Primary excitation voltage 50 to 115 VAC
Synchro signal: Set the switches to [SYNC].
Step signal: Set the switches to [STEP].
S1-1: Type of gyro signal (step/synchro)
S1-2/3: Gyration ratio of gyro compass
S1-4: Gyration direction of gyro compass
S1-5: Type of log signal (pulse/synchro)
S1-7/8: Ratio of log signal
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