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Selecting Test Features
Adding Frequency Offset to the PDH Signal
Adding Frequency Offset to the PDH
Signal
Description You can add Frequency Offset to the interface PDH signal at all rates.
Frequency Offset can be added at preset ITU values or as User defined
values in the range ±100 ppm.
The preset value changes according to the PDH signal rate chosen.:
2 Mb/s - ±50 ppm
8 Mb/s - ±30 ppm
34 Mb/s - ±20 ppm
140 Mb/s - ±15 ppm
For Option 110 instruments 34 Mb/s, 2Mb/s and DS1 32 ppm and DS3 20
ppm are available.
HOW TO: Choose the amount of frequency offset required.
If USER OFFSET is chosen you can set the Frequency Offset in the
range -100 ppm to +100 ppm in 1 ppm steps using
and .
The amount of applied Frequency Offset can be varied while
measurements are taking place.
DECREASE DIGIT
INCREASE DIGIT
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