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Making Measurements
Measuring Service Disruption Time
N O T E
At DS1 and DS3, Service Disruption results are only available for Unstructured
payloads.
Error Burst Definition
Error bursts start and finish with an error. Bursts of less than 10 us are ignored.
Bursts are assumed to have completed when >200 ms elapses without any errors
being received.
The longest burst detected is 2 seconds.
Accuracy: <= 50us for bulk filled PDH/T-Carrier tributary test signals.
N O T E
Note To measure Service Disruption your instrument must have a PDH/DSn module
fitted as the measurement takes place within the PDH/DSn module.
1 If interfacing at SDH set up the SDH transmit and receive interfaces and payloads
HOW TO:
required. See "Setting SDH Transmit Interface " page 29 and "Setting SDH
Receive Interface " page 49.
2 If interfacing at PDH/DSn set up the PDH/DSn transmit and receive interfaces
and payloads as required. See "Setting PDH/DSn Transmit Interface (option
012) " page 26 and "Setting PDH/DSn Receive Interface (Option 012) "
page 47.
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