JRC JMA-933B Installation Manual page 81

Chart radar
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Procedures
1) Set S5 to " OFF ".
The gyro compass and GYRO I/F are turned 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.
Synchro signal: Set the switches to " SYNC ".
Step signal
: Set the switches to " STEP ".
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 4-1
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
4) Set the DIP switch S2.
The items to be set are listed below. For the setting, refer to Table 4-2.
1
2
ON
OFF
OFF OFF
5) Confirm the settings of the DIP switch S10.
The DIP switch must be set as shown below. Do not change any of settings.
1
2
OFF OFF
OFF OFF OFF OFF OFF OFF
6) Set the jumper TB105.
The TB105 is set for using a low-boltage step signal.
1-2 connected: Setting for normal use.
2-3 connected: Setting for a step signal of 22V or less.
3
4
5
6
ON
OFF ON OFF
3
4
5
6
7
8
7
8
4-9

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