VeEX UX400, User Manual

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7.4 SONET Tools
SONET Tools can be accessed by tapping the SONET/SDH Tools tab on the home screen. SONET test type will need to be selected in Setup to view SONET parameters
under the Tools.
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.
One Way Delay
: Available only in dual port testing mode.
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7.4.1 Overhead Analyzer
Tap the Overhead Analyzer icon to display the OH screens. 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
Tapping the applicable byte enables an automatic decode – a byte description including the Hexadecimal and Binary value is provided. For some bytes, an advanced
decode of the various bits is also available.
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7.4.1.1 Section Overhead (SOH)
SOH
UX400 10G e-Manual D07-00-058P RevA00 Page 150 of 209