Installation manual

Simrad SD570 / Base version
32
851--160117 / B
7 TESTING THE AUXILIARY EQUIPMENT
7.1 General
If the connection of the auxiliary equipment is not finished, go
back to chapter 7 in section “Installation procedures” to make the
connections and the switch/link settings for the auxiliary
equipment in question.
In order to check the course gyro and the speed log, it is most
practical to connect the electronic drawer unit outside the sonar
cabinet.
7.2 Checking the course gyro readout
j Connectthecoursegyrocable(2)totheconnectormarked
COURSE GYRO (or port B for a gyro with serial line
output).
j Press the ON/OFF--HOIST button and hold it for
approximately 2 seconds until the Sonar Control Unit
starts up.
j If a synchro orstepper type gyro is connected, adjust the
course readout on the display to correspond to the gyro
readout.
j Turntheshiporthegyro,tocheckif thedirectionandthe
gear ratio give a course readout on the display that
corresponds to the gyro readout.
j If the readout does not change, check if the three LEDs
(D26, D27, D28) on the CUBPCB change (refer to figure
19 in section “Installation procedures”). When turning,
these LEDs should normally be blinking, and one or two
LEDs should always light. If not, check the following:
- Checkif theswitch settingon DILswitch S2 (andlinks for
a gyro with serial line output) on the CUB PCB is correct
according to the table for the gyro (see chapter 7.2 in
section “Installation procedures”).
- Check if the terminations on the COURSE GYRO plug
are correct for the gyro used.
- Check the gyro signal on the plug terminations.