ASC705: Installing NGC systems on fixed antennas

Course details

  • Installation, troubleshooting, and maintenance the CPI NGC controller for fixed, motorized antenna applications.


This course is intended for field technicians who install, troubleshoot, and maintain ASC's Next Generation Controller (NGC) system on fixed, motorized antennas.


Field engineers and technicians who are responsible for installing, troubleshooting, and maintenenance of NGC-controlled antenna systems.


Recommended: GVF 530+531+532. Required: ASC 701 + 702 + 704.


Animated & interactive HTML/Flash, self-paced, on-line format. Requires Internet access while studying the course material. High speed access is preferred but is NOT required. Student's computer must have a current browser and the current version of the Adobe Flash player (free) installed.


5 lessons
  1. Course introduction. Prerequisites. Quick Reference Guide. Reference documents. How to pass this course. NGC and the earth station. NGC block diagram. NGC versions. Installation checklist
  2. Preparation. Inspect the antenna system. Documents. NGC-ODU mechanical inspection. Az and El motor mechanical inspection. Jack screw mechanical inspection. Limit switch inspection. Resolver/encoder inspection
  3. Wiring the NGC system. NGC-ODU block diagram and tour. NGC-ODU connectors and cable entry points. About the NGC BUS. Three-phase AC basics. Connecting AC mains. ODU AC theory of operation. Safety caution. Wiring to motors and sensors. Antenna cable routing and dressing. Az and El motor wiring. Grounding cables entering NGC-ODU. Antenna Feedback: Resolver wiring. Antenna Feedback: Limit Switch wiring. DC pol drive theory. DC pol drive assembly, inspection, & wiring. NGC-206 Emergency Stop Station. Connecting IFL cables at the ODU. NGC-IDU mounting. NGC-IDU wiring. Internal Beacon Receiver. External Beacon Receiver wiring.
  4. Configuring the NGC system. Energizing the ODU. Restarting the ODU. Measuring voltages. Handheld controller tour. Preliminary setup. Verify VFD parameters. Set deadband. Platform vs. Current Az. Azimuth axis setup. Elevation axis setup. Pol axis setup (DC). Exercise: Az and El axis setup. Set beacon pol parameters. Initialize satellite tables and target. Find a satellite and trim offsets. Configure tracking receiver. Tracking configuration. Skills test: Az and El axis setup.
  5. Testing, troubleshooting, and maintenance. Verification testing. Antenna pattern testing. General troubleshooting. Troubleshooting - Az & El axis problems. Troubleshooting AC & DC pol drive problems. ODU spare parts. Preventive maintenance (indoors). Preventive maintenance (outdoors).
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