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Performance Tests
3
Installation and Verification Manual
107
9
Increase the Optical Attenuator setting to find the point just
before the occurrence of errors by observing the Errors LED
while adjusting attenuator. Record the additional attenuation
setting. (typically, this will be at least 1 dB). Press
<Run/Stop>
to stop measurement.
10
Re-set Optical Attenuator to the setting noted in
(providing –28 dBm output)
Set the OmniBER OTN’s Receiver to display
Optical Power
.
Press
<Smart Test>
, choose
Shortcuts > Optical Power
then
press
<Select>
. Set
Wavelength
to 1310/1550 nm as
appropriate, and check that the optical power measurement
reads between:
–30 dBm and –26 dBm
Set the OmniBER OTN’s Receiver to display
Frequency
and
check that the frequency measurement reads between:
2488.3199 MHz and 2488.3201 MHz
11
Reduce the Optical Attenuator setting by a further 19 dB and
check the Receiver
Optical Power
result is between:
–11 dBm and –7 dBm
12
Press
<Smart Test>
, choose
Shortcuts > Trouble Scan
then
press
<Select>
. Press
<Run/Stop>
to begin measurement.
After 1 minute check that
‘No Trouble’
is displayed in the
Results window to confirm no errors have been detected.
Press
<Run/Stop>
to stop measurement.
13
Disable the Optical Attenuator then disconnect the Optical
signal from the OmniBER OTN
Optical IN
port and connect
to the Power Meter. Re-enable the Optical Attenuator.
14
Check the Power Meter reading is between:
–9.5 dBm and –8.5 dBm
15
Set the OmniBER OTN Transmitter to provide an OTU-1
output with PRBS bulk payload as follows:
To test the OTU-1 (2.66 Gb/s) rate (Not available on all
options)
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Содержание OmniBER J7230A
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