HP OMNIBER 718 HP 37718A - Manual (Page 39)

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Selecting Test Features
Using Receive Overhead Capture
Using Receive Overhead Capture
Description Section, Line and Path overhead provide network support functions,
responding dynamically to network conditions and needs. It is therefore
useful to capture overhead activity on a frame by frame basis.
TIP: The Overhead Capture display can be logged to the chosen logging
device. See "Logging on Demand " page 110.
HOW TO: 1 Set up the receive SONET interface and payload as required. See
“Setting SONET Receive Interface” page 17.
2 Choose the overhead type as required.
SOH- Section Overhead
LOH- Line Overhead
POH- Path Overhead
3 Choose the Byte or bytes of overhead to be captured.
Choose the TRIGGER to determine the start point of the capture.
- starts immediately the capture is initiated. Can be used to
provide a frame by frame monitor of the chosen byte or bytes.
-captures activity after your specified overhead state has occurred.
Can be used for transient detection from a specified expected state.
OFF
ON