Comtech EF Data HPCST-5000 - Manual (Page 142)

Controller for Redundant Systems High-Power TWTA Satellite Terminals
6–4 Rev. 1
6.2.1.2 Manual or Automatic Switching
Refer to Section 6.2.2.1.3 for information on manual/automatic switching.
6.2.2 Local Controls and Indicators
This section discusses use of the controllers for local control of redundant systems. Refer
to Appendix A for remote control procedures.
The HPC-1110 is used for 1:1 redundant systems. 1:1 systems have a single RF output.
Note: In the automatic mode, the controller makes all the decisions necessary to maintain
the RF outputs.
6.2.2.1 Basic Controls and Indicators
Table 6-1 summarizes the local control functions and shows that the standard 1:1
controller is connected to a pair of TWTAs and controls one waveguide switch.
Table Chapter 6-1. HPC-1110 Local Functions
Control/Indicator Function
Power Indicator LED (Green).
AC Power ON.
Local/Remote Switch Select Local or Remote control.
Local Indicator LED (Green).
Local selected.
Remote Indicator LED (Green).
Remote selected.
Manual/Automatic Switch Select Manual or Automatic Operation.
Manual Indicator LED (Green).
Manual Operation selected.
Automatic Indicator LED (Green).
Automatic Operation selected.
TWTA Power Switches and indicators for turning on and indicating
TWTA is ON.
HV ON Switches 2 Switches (A and B).
TWTA Status Indicator 2 LEDs (A and B).
OFF — Unit OFF.
Blinking Amber — FTD.
Amber — Standby.
Green — TWTA HV ON.
Red — TWTA Faulted.
Waveguide Switch Position Indicators One set of four LEDs (green) switch position indicators.
LEDs operate in pairs to indicate switch connections.
Lamp Test Switch (momentary) Tests all front panel LEDs.
Fault Reset Switch Reset all latched faults.