Sea Tel 9497B-21, Инструкция по установке и эксплуатации

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9497B-21 C/Ku-Band TVRO Maintenance and Troubleshooting
7-19
input is corrupt, not stable or not consistently accurate the tracking errors will become large enough to cause
the antenna to be mis-pointed off satellite.
Satellite Reference Mode will uncouple the gyro reference from the azimuth rate sensor control loop. When
operating in Satellite Reference Mode changes in ships gyro reading will not directly affect the azimuth
control loop. The Pedestal Control Unit will stabilize the antenna based entirely on the azimuth rate sensor
loop and the tracking information from DishScan. This will keep the azimuth rate sensor position from
eventually drifting away at a rate faster than the tracking loop can correct by using the tracking errors to
regulate the rate sensor bias.
Satellite Reference Mode can be used as a diagnostic mode to determine if tracking errors are caused by
faulty gyro inputs.
Satellite Reference Mode is the recommended mode of operation regardless of the interfaced GYRO type.
To view, or change, the Satellite Reference Mode status, select the SAT REF remote parameter:
1. Press UP arrow and then the ENTER key to turn Satellite Reference Mode ON.
2.
Press DOWN arrow and then the ENTER key to turn Satellite Reference Mode OFF.
If you change this remote parameter, you must save the change using REMOTE PARAMETERS.
7.7.11.
An Error Code 8 as reported by the ACU is an indication that the above decks equipment has experienced an
error. One of the functions available within the “
Comm Diagnostics
” tool window provides the means to
read and decode the actual discreet Pedestal Function Error.
To Read/Decode an ACU Error Code 0008 (Pedestal Function Error):
1. Select the
“Comm
Diagnostics”
window
under to the Tools
submenu or Press “CTRL +
C”
2. Left mouse click on the
icon.