Symmetricom EDGE CLOCK 1000 - Manual (Page 150)

Chapter 5 Testing the TimeProvider
Testing Alarm Conditions
150 TimeProvider User’s Guide 097-58001-02 Revision G – April 2008
Testing the Revertive Operating Mode
When the TimeProvider is in the revertive operating mode, the input reference
signal reverts to the original input after it recovers from an error condition.
The TimeProvider is in the revertive mode when the QLEVEL parameter for INP1,
INP2, and PRS inputs are set to different values, and the PRIORITY parameters for
the same inputs are also set to different values.
To test the revertive operating mode, perform the following steps:
1. Define the revertive mode by setting the QLEVEL and PRIORITY parameters to
appropriate values. See Setting the Input Quality Level , on page 112, and Setting
the Input Priority Level , on page 113, for further information.
2. Provision and connect appropriate reference inputs to the TimeProvider.
3. Create a fault on the selected reference signal and observe that the
TimeProvider changes to the appropriate secondary input.
4. Remove the fault on the initial reference signal and observe that the
TimeProvider reverts to the initial reference input. The event log and the LEDs
indicate that the input is no longer in fault, and that the reference has changed.
Testing the Power Alarms
To test the ability of the TimeProvider to detect and report problems with the battery
power, you perform a two-step test:
Connect power to the TimeProvider on both Batt A and Batt B terminals
Remove power from one terminal and observe that the TimeProvider issues the
appropriate alarm
When power is lost from the Batt A or Batt B terminal, the factory default alarm is
Major.
1. Connect the appropriate power supply to both the Batt A and Batt B connectors.
The TimeProvider enters the Warm-up mode.
2. Remove power from either the Batt A or Batt B terminal. Observe that the Major
LED on the IMC is red. Verify that a Major alarm is included in the event log.