Agilent Technologies OmniBER OTN Series Performance Verification Manual page 37

Verification.book Page 34 Monday, January 19, 2004 1:40 PM
1
Performance Tests
OmniBER OTN
Optical Output
34
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8156A Optical Attenuator
4 Set OmniBER OTN Laser to ON and set optical attenuator to
Enable.
5 On the oscilloscope select Setup > Channel 1 > Advanced
settings. Switch oscilloscope Channel 1 ON, set it to the
correct optical wavelength for the signal being tested and set
Mask Filter to OC-3 (156Mb/s), ON, see Note.
Normally an OC-1 filter would be used, however as this may not be
NO TE
available, it is permissible to use the OC-3 Filter for this check. The
procedures for higher bit rates using OC-3, OC-12 and OC-48 filters will
give confirmation that laser overshoot response is as expected.
6 Set all other oscilloscope channels off.
7 Select Eye/Mask Mode, Mask Test. Select Open Mask and
open the STM000_OC1.msk.
8 Select oscilloscope Autoscale and allow the oscilloscope to
find signal and trigger inputs.
86100A Optical Oscilloscope
Trigger
I/P
TX Eye Clock
86103A
CH1
Optical
I/P
Verification Manual