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Virtual Front Panel
4–26
ST112 SONET Transmission Test Set
VT Pointer, Transmitter
Figure 4–31 VFP VT Pointer, Transmitter
The VT POINTER (
p
) menu is only accessible in the VT mode. All 28 VT pointers within the
SPE (Synchronous Payload Envelopment) generated by the Test Set receive the same value,
78 in this example. The VT pointer value indicates the position of the V5 byte. The VT pointer
values can be set to any number from 0 to 103.
The NDF (New Data Flag) indicates an arbitrary change in the pointer value due to a change in
the payload position. Use the arrow keys to move the reverse video cursor to the NEW POINTER
(NDF) number. Use the VT100 keyboard to type a different VT pointer number. Press the F4
key, during the test cycle, to execute the change.
Use the arrow keys to move the cursor to either PJ or SINGLE –PJ and press the F4
key to change the respective pointer values. Changing the pointer value will change the
CURRENT VT POINTER number at the top of the display (Figure 4–31).
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