Setting The Switch Event - Wavetek ANT-20 Operating Manual

ANT-20/ANT-20E
2.2.1

Setting the switch event

The event to be used to trigger switching and to be measured is set from the "Sensor" list box.
• MS-AIS measures the duration of a Multiplex Section Alarm.
• TSE measures the duration of loss of test pattern (PRBS).
Tip: If the sensor criterion is already present at the start of the measurement, the switching
Switch time limit (t1): Setting the check value
The measured switching time is compared with the 'Switch Time Limit' value on completion of
the measurement. If the measured value is lees than or equal to the limit, the result is PASSED.
Otherwise the result is FAILED.
Gate time (t2): Setting the measurement time
The measurement begins when the sensor event first occurs. It ends when the pre-set
measurement time has elapsed. This allows multiple switching to be detected.
Result and status display
The following are displayed after the end of the measurement:
• Switching time
• Status message
Display
PASSED
FAILED (Time)
FAILED (Signal)
Table O-2
Operation
time cannot be measured. To correctly detect loss of test pattern (Sensor = TSE) the
base error rate of the path should not exceed 2*10
Meaning
Measured value ≤ Switch Time Limit
Measured value > Switch Time Limit
A non-permitted defect occurred during the measurement which blocked the
sensor (e.g. LOS or LOF when Sensor = MS-AIS)
Display of test result after evaluation
Extended Overhead Analysis
-4
.
O-7