Agilent Technologies OmniBER OTN Series Performance Verification Manual page 52

Verification.book Page 49 Monday, January 19, 2004 1:40 PM
Verification Manual
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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.
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Performance Tests
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