Alcatel-Lucent 1850 TSS-320 Turn-Up And Commissioning Manual page 89

Tests and Measurements
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STATION-A
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5
With the pattern generator, send a fixed PRBS sequence
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6
Check that the error detector has read no errors.
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7
Increase the optical attenuation till errors are read on the error detector.
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8
Reduce attenuation until no errors are read.
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9
Disconnect the optical cable from the STM-n input port (point A in
connect it to the power meter input.
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10
Margin level must be minimum 4 dB better than the values reported in
87.
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11
Turn-on the laser through the CT (see
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12
Wait for 180 sec. and then read the Rx optical power.
The difference between the Rx optical power [see
(p. 3-59)] and the Rx optical power when introducing attenuation (as above explain) is the
"link margin."
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13
Repeat the check on the other port with "line port" function.
E O
N D
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PN 8DG08136CAAA
Issue 1 March 2008
S
F T E P S
Point-to-point measures list and operating sequence
para. 4.6 on page 86).
"Rx Optical "line port" power check"
Figure 28) and
para 4.7 on page
3 - 6 3