Performance Tests
1
Verification Manual
49
5
Press
<Menu>
, choose
Tx/Rx > Transmitter Settings >
Physical
then press
<Select>
. Set the
Signal Mode
to
SONET
and
Signal Rate
to
OC1
,
Wavelength 1310 nm
(or if this is
not fitted, select
1550 nm
). Ensure the
Laser
is set to
ON.
Check the laser LED is illuminated at the selected output
port on the OmniBER OTN’s connector panel.
6
Adjust the optical attenuator to obtain a reading of –34 dBm
on the power meter (that is, the receiver minimum sensitivity
for 52/155 Mb/s rates). Take note of the attenuator setting.
7
Set the optical attenuator to Disable mode.
Note, do not switch OFF the OmniBER OTN laser.
Disconnect the optical attenuator output from the power
meter and connect to the OmniBER OTN’s
Optical IN
port
(52–622 Mb/s). Ensure all optical connectors are clean and
all connections are tight with no twists in the optical cable.
Set the optical attenuator to Enable.
8
Press
<Smart Test>
, choose
Shortcuts > Trouble Scan
then
press
<Select>
. Press
<Run/Stop>
to begin measurement.
9
After 1 minute check that
‘No Trouble’
is displayed in the
Results window to confirm no errors have been detected.
Verification.book Page 49 Monday, January 19, 2004 1:40 PM
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