Performance Tests
1
Verification Manual
41
4
Set the OmniBER OTN
Laser
to
ON
.
5
On the oscilloscope select
Setup
> Channel 3 > Advanced
settings.
Set it to the correct optical wavelength for the
signal being tested and set
Mask Filter
to
OC-192
(9.95Gb/s), ON
,
6
Select
Eye/Mask Mode
,
Mask Test.
Select
Open Mask
and
open the
STM064_OC192.msk
.
7
Select oscilloscope
Autoscale
and allow the oscilloscope to
find signal and trigger inputs.
8
Start
Mask Test
and check the optical output meets the
“OC-192/STM-64 Eye Mask"
on page 42
9
Set the oscilloscope to
Eye Measure
mode and setup to
measure the
Average Power
(in dBm) and
Extinction Ratio
.
10
Check the average optical power is between
–1 to +2 dBm
.
86100A Optical Oscilloscope
Trigger
I/P
86105A
CH3
Optical
I/P
OmniBER OTN
9.95/10.71 Gb/s Optical Output
Eye Clock 9.95/10.71 Gb/s
N O T E
Ensure Vertical Calibration and Extinction Ratio Calibration have been
performed for the oscilloscope channel and vertical sensitivity range to
ensure measurement accuracy. Refer to oscilloscope information/Help if
necessary.
Verification.book Page 41 Monday, January 19, 2004 1:40 PM
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