Maintenance and Troubleshooting ST94-21 C/Ku-Band TVRO
Slow Scan Indicates antenna is in a specialized mode, Slow Scan, which is required when
ever a test requires driving the antenna >5°/sec
Indicates that satellite reference mode is enabled.
Indicates that DishScan® Drive is enabled.
Unwrap Indicates that the antenna is currently in an “Unwrap” state.
This is not a valid error for unlimited azimuth antenna systems
Data 3 Indicates active communication between above decks and below decks
equipment at the time of query
Data 2 Indicates active communication between above decks and below decks
equipment at the time of query
Az Target Indicates the antenna is currently targeting a pre-determined azimuth position
Valid Heading (PCU) Indicates that the PCU has received and integrated the heading value from the
ACU into the Azimuth Stabilization Loop. This is NOT an indication of a proper
Heading integration into ACU.
PCU Error Indicates that one or more errors have been reported by the above decks
PCU Init Indicates that the above decks equipment is currently performing an
Hi Elevation Indicates that the above decks equipment is operating an Elevation Position
PCU Error Status (Word 3)
Sensor Limit **Not a valid state**
Stability Limit Indicates that the above decks equipment is mis-pointed from its intended
target by more than 0.5°. (FCC Tx Mute Compliance)
AZ Reference Error Indicates a failure to integrate one the reference inputs within the Azimuth
AZ Servo Limit Indicates the current draw through the Azimuth Servo Amplifier (motor driver
PCB) has exceeded what is required during normal operation
LV Servo Limit Indicates the current draw through the Elevation Servo Amplifier (motor driver
PCB) has exceeded what is required during normal operation
CL Servo Limit Indicates the current draw through the Cross-Level Servo Amplifier (motor driver
PCB) has exceeded what is required during normal operation
EAR Controlled - ECCN EAR99
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