
27
Selecting Test Features
Generating Overhead Sequences
Generating Overhead Sequences
Description You may insert a pattern into a functional group of overhead bytes for
testing or troubleshooting purposes.
HOW TO: 1 Set up the SONET transmit interface and payload required. See
“Setting SONET Transmit Interface” page 4.
2 Choose the type of sequence required.
SINGLE RUN - runs the sequence once and then stops.
REPEAT RUN - runs the sequence repeatedly until STOPPED is
chosen.
3 Choose the overhead type as required.
SOH- Section Overhead
LOH- Line Overhead
POH - Path Overhead
4 Choose the byte or bytes of overhead required.
5 Set up the required number of data patterns and the number of
frames in which each data pattern should appear.
Yoursequenceisderived fromupto5blocksof hexadecimaldata.Each
block can be transmitted in up to 64,000 frames.
The data and the number of frames are set using
.
DECREASE DIGIT
INCREASE DIGIT
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