54
Level vial
Rate sensor bias
Tilt bias
Idle mode &
Reboot antenna
IDLE MODE REBOOT ANTENNA
OFF NO
8. Set IDLE MODE and REBOOT ANTENNA
The antenna is balanced at factory. However, after disassembly for shipping, maintenance or
parts replacements, antenna balance adjustment may be required. The elevation and cross-
level motors have a brake mechanism integrated into them, therefore, antenna power and
IDLE MODE must be ON to release the motor brakes. Balancing is achieved by adding or
removing weight blocks at strategic locations to keep the antenna balanced.
IDLE MODE: Press UP and DOWN arrow keys to turn ON/ OFF IDLE MODE.
The motor brakes will be released while the IDLE MODE is ON. The antenna will restart
automatically if IDLE MODE is re-set from ON to OFF or RETURN key is pressed to exit
SETUP mode.
REBOOT ANTENNA: The antenna will restart automatically if REBOOT ANTENNA is ON.
+RATE SENSOR BIAS +TILT BIAS
9. Set RATE SENSOR BIAS
RATE SENSOR BIAS is to calibrate DC voltage output from the three rate sensors used to
sense antenna motion in azimuth, elevation and cross-level axes. The DC voltage output
from each of the rate sensors may be vary by an amount which is directly proportional to the
direction and rate of motion induced on it.
NOTE: The motion of the ship must be stable when the sensor box is replaced.
STEP SIZE ELEVATION CROSS LEVEL
# 0.2 #
00.0 01.0
10. Set TILT BIAS
TILT BIAS is to adjust the two solid-state tilt sensors used to provide absolute cross-level tilt
of the antenna and elevation feedback to eliminate long-term pointing drift (error). The TILT
BIAS is required to set when the system is newly installed, antenna control board or sensor
box is replaced. Check and see if the bubble is located at the center of the level vial. If not,
press OK key to enter TILT BIAS menu to adjust.
To Next Page
Loading...
Need help?
General
