Testing The Critical Alarms; Testing The Reference Signals And Selection - Symmetricom SSU-2000 User Manual

CHapter 4 Commissioning
Commissioning Tests
6. Replace the fuse to restore Power A to the unit.
7. Verify that the alarm clears, is reported and logged.

Testing the CRITICAL Alarms

To test the CRITICAL alarm relay closures and software:
1. Set the Power A alarm level to CRITICAL:
ICS format:
TL1 format:
2. Remove Power A input by removing the A-bus fuse (or the fuse that supplies
Power A).
3. Verify that the CRITICAL alarm indicator is ON.
4. Verify that the CRITICAL alarm is reported to the communications terminal.
5. Verify that a CRITICAL alarm was logged in the event log:
ICS format:
TL1 format:
6. Replace the fuse to restore Power A to the unit.
7. Verify that the alarm clears, is reported and logged.
8. Type
ALARM

Testing the Reference Signals and Selection

To test the reference signals and selection:
1. Type
INPUT
input will be listed by module position and port number, status, phase A and B
readings, input PQL, signal alarms, and MTIE alarms.
The status should be OK and the Priority Quality Level (PQL) should indicate the
received Sync Status Message (SSM) level or the provisioned value. The phase
values will be dependent on the received signal. The signal alarms should be /////
(no alarms present, F indicates an alarm) and the MTIE alarms should all be OK.
2. Type
REF
signal. Disconnect this input signal and verify a Loss Of Signal (LOS) is reported
for the input, and the unit selects an alternate input for the reference signal.
124 SSU-2000 User's Guide
ALARM 1A02 CRITICAL
SET-PRMTR-ALARM::S1A2:::02,CRITICAL;
EVENT ALARM
RTRV-EVENT::S1A2;
and press Enter to restore Power A to the original alarm level.
to verify each input signal is present with no alarms. Each reference
and press Enter to determine the current selection of input reference
12713020-002-2 Revision F.01 – January 2007