Removal and replacement of ADU modules
98-133966-G1
Chapter 8: Service & maintenance
8-77
8888
Service & maintenance
8.5.11
Replacing the Inertial Sensor Module
(ISM)
When the antenna dish is moved by the motors and ships motions, in all
its plans the ISM provides the information regarding these movements.
This information is based on rate gyro and accelerometers mounted in
the ISM.
The information is passed on to the PCM.
The ISM has two LEDs for status and troubleshooting:
• Power LED: green or Off
• Service LED: green or red
Figure 8-104: Inertial Sensor Module (ISM), location
Figure 8-105: Inertial Sensor Module (ISM)
Service LED
Power LED
(green or red)
(green)
SAILOR900TM.book Page 77 Monday, September 16, 2013 11:01 AM
Summary of Contents for Sailor 900 VSAT
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