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Description:
NO T E
HOW TO:
Making Measurements
Measuring Jitter
Measuring Jitter
Simultaneous Jitter and Error measurements are made when jitter option 001 is
fitted to ProBER 2 and the jitter measurement is enabled. Jitter measurements are to
ITU-T standard O.172.
Jitter Amplitude and Jitter Hits results are provided:
• Amplitude - Peak to Peak, Positive Peak, Negative Peak
• Hits - Hit count, Hit seconds, Hit free seconds
A selection of jitter filters is provided to allow received jitter to be compared with
the maximum input tolerance of the ITU-T G.823 and G.783 masks:
• HP1 - 20 Hz high pass
• HP2 - 18 kHz high pass
• LP - 100 kHz low pass
Filters
allows jitter measurement in the range 2 Hz to greater than 100 kHz on
OFF
the 1.6 UI range.
The 16 UI range is particularly useful in identifying jitter originating from pointer
movements.
1. Jitter measurement is only possible when Option 001, Advanced Signal Quality
Measurements, is fitted.
2. Jitter measurement is not available when a Line Rate of 64 kb/s is chosen.
3. When Jitter measurement is enabled the Line Level, Pulse Mask and Error Add
features are not available.
1 Set up the receive interface and transmit interface if necessary. See "Setting
Transmit and Receive Interfaces" on page 4-3.
2 Choose
,
MENU
Signal Quality
and view the jitter results.
3 Enable the jitter measurement by choosing
4 Choose the jitter measurement range required from the menu (1.6 UI or 16 UI).
6-16
,
,
to configure the jitter receiver
Jitter
.
ON
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