Series 04 Ku-Band TVRO Antenna

Troubleshooting and Maintenance
Series 04 Ku-Band TVRO Antenna
Functional Test(s)
DacRemP Graph System Function(s)
Selection to use
Four Quadrant Tracking. ADMC (Position) Tracking
Azimuth Encoder Verification. ADMC (Position) Targeting
Sea Trial ADMC (Position) Targeting
Tracking
Stabilization
Side Lobe Plots ADMC (Position) Tracking
Targeting Alignment (AZ & EL Trims) ADMC (Position) Targeting
Determine Blockage Mapping ADMC (Position) Tracking
Unwrap recovery (Limited Az systems only) ADMC (Position) Stabilization
Pedestal Gain Verification DISPIVC (Loop Error) Stabilization
Home switch (flag) verification (Unlimited DISPV (Ref)
Stabilization
Az systems only)
Remote Tilt Verification DISPV (Ref) Targeting
Stabilization
Level cage alignment Verification (sensor
alignment)
DISPV (Ref)
Targeting
Stabilization
Rate Sensor Output Verification DISPW (Rate) Stabilization
Level and CL fine balance Verification DISPTC (Drive) Stabilization
AZ Friction Torque Test DISPTC (Drive) Stabilization
DishScan Drive/Phase DishScan XY Tracking
Stabilization
7.3.4. Antenna Loop Error Monitoring
The DacRemP DISPIVC graph chart provides a means for monitoring the accumulated velocity
errors of the antenna for diagnostic purposes. If this error is excessive, it indicates external forces
are acting on the antenna. These forces may be the result of but not restricted to static imbalance,
excessive bearing friction, cable binding, or wind loading. If these forces cause the antenna to mispoint
by more than 0.5° from the desired position the PCU will flag a “Stab Limit” error.
• To view the position error, select the graph chart.
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