The GPS Reference Controller screen provides information on the controller's status. The fields are described in the table below.
Field / Section |
Description |
Reference Controller Status |
|
Critical Count |
Count of active critical alarms |
Major Count |
Count of active major alarms |
Minor Count |
Count of active minor alarms |
Selected |
Indicates which Local Oscillator input is currently selected |
Loop Frequency |
Same as local oscillator frequency |
Delta Frequency |
Last applied frequency update to the local oscillator offset |
Delta Time |
Difference between the phase measurements and the current output from the loop |
Loop Status |
Indicates status of control loop. Values: " INI" (Loop is in the initialization stage. If in this stage, no other information is presented.), " ACQ" (loop is in acquisition), "LOCK" (loop is in the Locked state), "HALT" (loop updates are halted du to no, or invalid phase measurements), " UHLT" (loop has been halted by user) |
Noise |
Current measurement noise of the inputs |
Offset |
Current local oscillator frequency offset |
TAU |
Indicates current loop time constant, in seconds |
Alarm Status |
Indicates whether any alarms are currently active |
AID |
The Access Identifier (AID) identifies the location of a module within the system |
Notification Code |
Indicates notification codes for alarms. Values: "CR" (critical), " MJ" (major), "MN" (minor), " CL" (cleared), or " IG" (ignored) |
Alarm |
Indicates the alarm number |
Condition Type |
Indicates condition type for alarms or events. Values: Module Operations - "ADDED", "REMOVED", or "RESTORED", Controller Alarm Operation - "ALARM" or " PWR", Local Oscillator Reference Updates - " REF", Message Information - "MSG", Operator Responses - " OPER", Equipment Faults - " INTIFCFAIL" |
Service Affecting |
This field Indicates whether an alarm response message affects service. Values: SA or NSA |
Description |
Text description of the alarms indicated |