VeEX VePAL TX300M, User Manual

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10.2 SONET Tools
Accessing SDH/SONET Tools
On the TX300, tap on Home (main menu) >
Advanced Mode
>
SONET/SDH Tools
On the TX300e, tap on Home (main menu) >
SONET/SDH Tools
10.2.1 Shortcuts
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
TX300S_e-manual_D07-00-064P_RevA00