Simrad GI51, Manual, Page: 12 / 29

Simrad GI51 Gyro Interface
4
20221594 / Cb
2.3 Dip switch settings
The following dip-switches have to be set correctly:
- SW1-1 and SW1-2 determine the gearing ratio for synchro
input. For 1:1 synchro or if synchro is not used, both are set
to OFF.
- SW1-3 determines the format of the clk/data heading signal
to the radar. If the unit is powered by the Robnet, the
format is set from the autopilot control unit. Hence the
switch is not used and the setting of the switch is irrelevant.
- SW1-4 is used to start a calibration (ref. section 2.6). It can
also be used for test and trouble shooting (ref. page 14).
Five seconds after setting the switch to ON, the heading at
all outputs will jump in circles in a sequence of 45° each 10
sec.
Note!
Before activating heading jumps, make sure it will not cause any
harm (ship running on automatic pilot etc).
- SW2-1 set to OFF gives NMEA and Robnet speed output
from the pulse log input. If set to ON, speed will be taken
from the longitudinal water speed field of VBW (1.priority)
or VHW (2.priority) of the NMEA input.
- SW2-2 is used for 1:1 synchro to determine the internal
gain for high voltage 50-110V ref., 20-90V L/L or low
voltage, 26V ref., 11.8V L/L synchros. OFF sets the gain
for high voltage level, ON sets the gain for low voltage
level.
All switches are factory set to OFF.
For location of the dip-switches, refer to
Component location
,
page 9.