106
Installation and Verification Manual
3
Performance Tests
CAL=0
ENB ON
Set the Optical Power Meter to
WAVELENGTH 1550 nm (or 1310 nm depending on
wavelength used)
Connect the Optical Attenuator between the Power Meter and
the OmniBER OTN’s
Optical Out
port (ensure that all
connections are tight and that the cable has no twists).
4
Set the OmniBER OTN Transmitter to provide OC-48 output
with PRBS bulk payload as follows:
Press
<Menu>
, choose
Tx/Rx > Transmitter Settings
then
press
<Select>
. Select the
Physical
tab. Set the
Signal Mode
to
SONET
and
Signal Rate
to
OC48
,
Wavelength 1550 nm
(or if this is not fitted, select
1310 nm
). Ensure the
Laser
is
set to
ON
.
Check the laser LED is illuminated at the selected Output
Port.
5
Adjust the Optical Attenuator to obtain a reading of –28 dBm
on the Power Meter (that is, the Receiver minimum
sensitivity for 2.5 Gb/s rate). Take note of the Attenuator
setting.
6
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
(2.5 Gb/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.
7
Set the OmniBER OTN to
TX>RX Coupled Mode
.
8
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.
panther3_iv.book Page 106 Wednesday, January 15, 2003 12:03 PM
