VeEX UX400, Руководство пользователя

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POH TX
, which allows editing of select bytes associated with the Path Overhead.
Editing of J1, C2, H4, G1, Z5, and J2, V5, Z6 is permitted as follows:
Hexadecimal value using pop-up keypad
Binary values using simple on-screen bit toggle or pop-up keypad
Convenient drop-down selections. In some instances, the drop-down options will be available over multiple pages
C2 Byte from POH
Overhead Generator
Programming most overhead bytes is possible using the OH Generator feature, however dedicated
test functions are available for Pointer Tasks, Payload Labels, Trace Identifier, APS Testing, TCM
testing.
In some instances, more advanced editing is possible using the dedicated functions.
Summary
displays the Path Trace Identifiers (J0, J1, J2), APS (K1, K2), Synchronization status (S1), HP (C2), and LP (V5) Signal Label bytes. The operation is the
same as the Overhead Analyzer function.
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7.4.3 Pointer Tasks
Tap the Pointer Tasks icon to display the Pointer testing screens.
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7.4.3.1 Pointer Analysis
Pointers keep SONET signals synchronous by compensating for timing differences without having to use stuffing bits. Pointers are allowed to move up or down every three
UX400 10G e-Manual D07-00-058P RevA00 Page 162 of 209