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Setting the Transmit Clock Source
For proper testing and valid results, clock synchronization of theOC3port Plus
with the network under test may be required. To set the transmit clock source, do
the following:
The sample screens shown in this procedure are STS-3c screens. If
the framing format you selected is STM-1, the OC3port Plus displays
equivalent STM-1 screens.
1. Press the
SONET
2. Press the
Down Arrow
the selection line. Then, press
displayed.
3. Press the
Down Arrow
line:
STS-3c SETUP:
L/P Auto FEBE
XMIT CLK Source
STS-3c Scrmblg
4. Then, press the
•
Transmits data using the internal clock on the OC3port Plus
INT
(155.52 MHz) (the default)
•
(Loop Recovered). Uses the frequency of the recovered signal to
LPR
transmit data.
The tester is now configured with your clock source selection.
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SONET/SDH Configuration and Testing
Setting Up for Testing STS-3c and STM-1 Signals
Note
key. The
SONET SELECTIONS
key to move the
Setup STS-3c
. The
ENTER
key to move the
XMIT CLK Source
or
key to change to one of the following settings:
Left
Right
menu displays.
or
option to
Setup STM-1
submenu is
STS-3c SETUP
option to the selection
OFF
INT
ON
4
za043f.eps
4-9
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