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Making Measurements
Performing an SDH Alarm Scan
Performing an SDH Alarm Scan
Description
This test can be performed In-Service without disturbing live traffic.
SDH Alarm Scan tests each channel for alarm free operation and identifies and
indicates any Unequipped channels.
You can configure the Scan to check for the occurrence of any Path layer BIP errors
above a chosen threshold. The channel in which an alarm occurred is highlighted if
any of the following alarms occur:
AU-LOP, HP-RDI, AU-AIS, H4 Loss of Multiframe,
TU-AIS, LP-RDI, TU-LOP
The SDH Alarm Scan display can be logged to the chosen logging device. See
"Logging on Demand " page 261.
HOW TO:
1 Set up the receive SDH interface and payload as required. See "Setting SDH
Receive Interface" page 49.
2 Choose
3 Choose AUTO or RX SETTINGS.
RX SETTINGS: The scan checks the structure set on the
display.
AUTO: The scan checks the structure being received. This can be particularly
useful when receiving mixed payloads.
4 Choose the BIP error threshold.
5 Choose
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on the
SDH ALM SCAN
RESULTS
to start the Alarm Scan.
START
display.
SDH
RECEIVE
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