Intellian GX100PM, Installation And Operation Manual

Page: 120 / 139

GX100PM – Marine Satellite Communication System
120
WARNING:
Tick the checkbox before modifying the settings. After configuration, click
'set...' button to submit the settings.
8
Search & Tracking
Parameter Setting
DVB Detect and Tracking Level Threshold: display / set
current detect level threshold and tracking level threshold
when DVB tracking mode is chosen to be used.
- NBD Detect and Tracking Level Threshold: display / set
current detect level threshold and tracking level threshold
when NBD tracking mode is chosen to be used.
- TX Enable Threshold: display / set TX enable threshold.
- Wait time: set the time-out for automatic initiation of a
search after the signal level drops below the pre-defined
threshold value.
- Search Step: set increment step size.
- Search 1 & 3 Range: set Search 1 & 3 search range.
Search is conducted in a two-axis pattern consisting of
alternate movements in azimuth and elevation as forming
expanding square.
- Search 2 Range: is reserved for future use.
9
Tilt Sensor Bias
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). Tilt
bias is required to be adjusted when the antenna control
board or sensor box is replaced. Check to see whether or
not the bubble is located at the center of the level vial.
10
Rate Sensor Adjust
Calibrate DC voltage output from the three rate
sensors used to sense antenna motion in azimuth,
elevation and cross-level axes. During the calibration
process, the antenna should avoid any motion as it can
affect the antenna’s performance.