Simrad AP50 User Manual download pdf (Page 111)

Installation

20221032B 109

GI50 Gyro Interface

The GI50 Gyro Interface is required when a gyrocompass with

geared synchro or stepper signal output is connected to the

AP50.

The GI50 is also required when a speed log signal with 200

pulses/NM is connected to the system.

All cable conductors are terminated in screw terminals on the

GI50 PCB. For cabling and connections, see Figure 4-39.

Figure 4-39 GI50 Gyro Interface Connections

There are also three plug-in jumpers on the PCB, one for each

phase. The position of the jumpers allows the GI50 to operate

from either positive or negative step-signals. For setting of the

jumpers, refer to Figure 4-40. The shown jumper position

enables step-signals with positive common. For negative

common, insert jumpers vertically, A1-A3, A2-A4 and so on.

In addition, a DIP switch is included. Switch number 1 sets the

gear ratio: 360:1 + stepper = switch to 0 (OFF), 90:1 = switch to

1 (ON)

The remaining switches 2, 3, and 4 are for test purpose only and

should be 0 (OFF) for normal use. Figure 4-40 shows the

location of the switches and the LED's.

1 2 ... 106 107 108 109 110 111 112 113 114 115 116 ... 187 188

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Simrad AP50 User Manual Page 111