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Installation and Verification Manual
16 Start Mask Test and check the Optical Output meets the
Mask. See example on page 91.
17 Set the scope to Eye Measure mode and select Extinction
Ratio measurement.
18 Check the Extinction Ratio is greater than 8.2 dB and record
the measured value.
OC-3/STM-1 Eye Mask
.
OC-12/STM-4 Power Level and Eye Mask Tests
19 Change the Transmission Test Set Transmitter > Signal Rate
to OC12.
20 Select Eye/Mask Mode, Mask Test. Select Filter and set it to
OC-12 (622 Mb/s), ON.
21 Select Open Mask and open the STM004_OC12.msk.
22 Select scope Autoscale and allow the scope to find signal and
trigger inputs.
23 Start Mask Test and check the Optical Output meets the
Mask. See example on page 92.
Performance Tests
91
3
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