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Making Measurements
Measuring Wander
HOW TO:
Make the Measurement
1 PDH Operation Wander Reference:
Select the
CLOCK field to
menu provided (i.e. MTS 2M CLOCK/DATA, MTS 64k CLOCK,
appropriate port on the instrument clock module. See "Setting PDH/DSn
Transmit Interface (option 012) " page 26.
2 SDH Operation Wander Reference
Select the
field to
provided (i.e. MTS 2M CLOCK/DATA, MTS 64k CLOCK, BITS 1.5Mb/s and
10MHz REF). Connect your external timing source to the appropriate port on the
instrument clock module. See, "Setting SDH Transmit Interface" page 29.
3 If measuring wander at a PDH rate, set up the PDH receive interface. See,
"Setting PDH/DSn Receive Interface (Option 012)" page 47.
4 If measuring wander on an SDH Optical signal, check on the
level falls within the white portion of the coloured bar
of the Wander results.
5 If measuring wander at an SDH rate set up the SDH receive interface. See,
"Setting SDH Receive Interface" page 49.
6 Choose MEASUREMENT TYPE
previous page.
7 Choose the WANDER HIT THRESHOLD level - if the received wander exceeds
the value chosen a wander hit is recorded.
8 Press
134
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PDH/DSn
TRANSMIT
EXTERNAL
BITS 1.5Mb/s and 10MHz REF). Connect your external timing source to the
SDH
TRANSMIT
. Choose the CLOCK SOURCE required from the menu
EXTERNAL
SDH RESULTS
OPTICAL POWER
to start the measurement.
RUN/STOP
MAIN SETTINGS
. Choose the CLOCK SOURCE required from the
display. and set the CLOCK
MAIN SETTINGS
display that the measured optical power
This ensures the accuracy
.
, as shown in the display on
WANDER
display, and set the
RESULTS
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