Agilent Technologies OmniBER 718 SDH User Manual page 36

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Setting the Interfaces
Setting Jitter Transmit Interface
5 Choose the modulation source.
If adding jitter to the PDH signal and
external source to the MOD IN port of the JITTER module. Up to 10 UI (20 UI
for DS1/DS3) of external jitter modulation can be added at the MOD IN port.
If adding jitter to the SDH signal and
external source to the MOD IN port of the JITTER module. Up to 20 UI of
external jitter modulation can be added at the MOD IN port.
6 If you have selected an
CONTROL setting required.
You can choose the jitter range, jitter modulating frequency and jitter amplitude
if
If you choose
mask (G.823 for PDH; GR.499 or G.824 for DSn; G.958, G.825 or GR.253 for
SDH) adjusting the jitter amplitude according to the jitter frequency. With the
the jitter mask sweep (an example is given below).
If you choose
amplitude is adjusted and controlled according to your jitter frequency choice.
TIP:
If, when using the SWEPT MASK capability, a problem occurs around a certain
frequency, this may require closer examination. Stop the sweep at that point by
choosing
examination of the problem.
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INTERNAL
is chosen.
OFF
, the OmniBER 718 will "sweep" through the ITU-T jitter
SWEPT
field selected, press SET on the instrument front panel for a display of
SWEPT
, you can choose the "spot" jitter frequency. The jitter
SPOT
. You can then control the "spot" jitter frequency to make closer
SPOT
is chosen, connect the
EXTERNAL
is chosen, connect the
EXTERNAL
Modulation Source, choose the JITTER
35

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