Adding Frequency Offset To The Pdh/Dsn Signal - Agilent Technologies OmniBER 718 SDH User Manual

Selecting Test Features

Adding Frequency Offset to the PDH/DSn Signal

Adding Frequency Offset to the PDH/DSn Signal

Description You can add frequency offset to the interface PDH/DSn SIGNAL at all rates.
Option 012 required Frequency Offset can be added at preset ITU-T values or as User defined values in
the range ±100 ppm. The preset values change with the SIGNAL rate chosen as
for PDH operation.
shown:
HOW TO: 1 Choose the FREQUENCY OFFSET required.
2 If you choose USER OFFSET, you can set the frequency offset to be between -
100 ppm and +100 ppm in 1 ppm steps.
Select the field immediately below USER OFFSET and use
offset. (The amount of frequency offset can be varied while measurements are
taking place.)
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DS-1 (1.544 Mb/s)
2 Mb/s (E1)
8 Mb/s (E2)
34 Mb/s (E3)
DS-3 (44.736 Mb/s)
140 Mb/s (E4)
,
DECREASE DIGIT INCREASE DIGIT
+32 ppm −32 ppm
+50 ppm −50 ppm
+30 ppm −30 ppm
+20 ppm −20 ppm
+20 ppm −20 ppm
+15 ppm −15 ppm
and to set the frequency
,