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Description:
NO T E
HOW TO:
Test Setup Features
Adding Alarms or Errors
Adding Alarms or Errors
Alarms or errors can be added to the transmit signal during testing. An indication of
received alarms and errors is displayed.
The following alarms or errors can be added:
• Alarms - LOS (loss of signal), AIS (alarm indication signal), LOF (loss of
frame), Timeslot AIS, RDI (remote defect indication), RDI MF (multiframe).
• Errors - Bit, Code, FAS (frame alignment signal), CRC (cyclic redundancy
check), E-bit.
Bit, Code, CRC and E-bit errors can be added singly or at one of the predetermined
error rates in the range 1 in 10
3 in 4 and 4 in 4 (all).
If Option 001, Advanced Signal Quality Measurements, is fitted and Jitter is enabled,
Error Add is disabled but Alarm Add is available.
1 Choose
,
Test Setup
MENU
Add display, as shown.
2 Choose the Alarm Type.
3 Choose the Error Add Type and Rate required. Note that Errors and Alarms can
be added to the transmit signal at the same time.
5-2
3
7
to 1 in 10
. FAS errors can be added at 1 in 4, 2 in 4,
,
,
Alarm/Error
to obtain the Alarm or Error
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