VeEX RXT3900, User Manual

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10.2 SONET Tools
10.2.1 SONET Tools Home Icons
SDH/SONET Tools Menu
Overhead Analyzer:
Displays the Section/Line Overhead (SOH) and STS Path Overhead (POH) bytes of the received
channel.
Overhead Generator:
Used to edit Section/Line Overhead (SOH) and STS Path Overhead (POH) bytes of the received
channel.
Pointer Tasks:
Displays both STS and VT pointer values and generates STS and VT pointer movements. Pointer
sequences according to Bellcore GR.253 recommendations are also possible.
Trace Identifier:
Used to generate and edit J0, J1 and J2 path traces and set expected trace for received channel
according to G.831 recommendations.
Payload Labels:
Used to set the C2 and V5 Path Signal Labels which indicate the content of the STS path and VTs.
APS Testing:
Used to measure Automatic Protection Switching limits. Using selectable triggers, the drop out times of
tributary connections are measured and compared with preset values.
TCM Tasks:
Used to analyze or edit the sequence of Z5 and Z6 TCM bytes by generating alarms and errors in the
Tandem connection sub-layer.
Tributary Scan:
Used to scan individual or multiple tributaries to verify routing and error free operation. Available in VT-
1.5 or VT-2 mode
Round Trip Delay (Propagation Delay):
Measurement works by sending a test pattern. Bit errors are transmitted in the
pattern. The time it takes for the error to reach the receiver is the propagation time through the network.
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10.2.2 Overhead Analyzer
Tap the Overhead Analyzer icon to display the OH screens shown below. There are tabs for:
SOH RX, which displays the bytes associated with the Section/LINE Overhead
POH RX, which displays the bytes associated with the Path Overhead
Summary, which displays the Path Traces (J0, J1, J2), APS (K1, K2), Synchronization status (S1), STS Path (C2), and VT
Path (v5) Signal Label bytes
SOH
RXT-3900 e-Manual D07-00-111P Rev A00