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Making Measurements
Performing an SONET Tributary Scan
Performing an SONET Tributary Scan
Description Tributary Scan tests each tributary for error free operation and no
occurrence of Pattern Loss. A failure is indicated by highlighting the
tributary in which the failure occurred. The
, mapping setup determines the tributary structure.
The HP 37717C will configure the Transmitter to the Receiver and the
PATTERN is forced to the payload it will fill.
Option
Differences
If your instrument has option 120 fitted you can perform a tributary scan
of Sonet tributaries. Use the procedure given here for SONET operation.
HOW TO: 1 Set up the transmit and receive SONET interfaces and payload as
required.
2 Choose the required BIT ERROR THRESHOLD.
This determines the error rate above which a failure is declared.
3 Choose the required TEST TIMING.
The value you choose is the test time for each individual tributary and
not the total test time.
For example, 28 VT1.5 tributaries in an STS-1 SPE - the time taken to
complete the Tributary Scan will be 28 X TEST TIMING choice.
TRANSMIT
SONET
MAIN SETTINGS
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