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Making Measurements
Performing a SONET Tributary Scan
Performing a 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 37718A will configure the Transmitter to the Receiver and the
PATTERN is forced to the payload it will fill.
TIP: The SONET Tributary Scan display can be logged to the chosen logging
device. See "Logging on Demand " page 110.
HOW TO: 1 Set up the transmit and receive SONET interfaces and payload as
required. See "Setting SONET Transmit Interface " page 4 and
"Setting SONET Receive Interface " page 17.
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 VT-1.5 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