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Installation and Verification Manual
4 Set the Transmission Test Set Transmitter to provide OC-192
output with PRBS bulk payload as follows:
Press <Menu>, choose System > Preferences then press
<Select>. Set Network Standard to SONET.
Press <Menu>, choose Tx/Rx > Transmitter Settings then
press <Select>. Select the Physical tab. Set Signal Rate to
OC192. Ensure the Laser is set to ON.
Check the laser LED is illuminated at the 10 Gb/s Optical Out
Port.
5 Adjust the Optical Attenuator to obtain a reading on the
Power Meter equal to the Receiver minimum sensitivity
specification for the type of 10 Gb/s interface installed.
Option 111, 1550 nm HS type this is –20 dBm,
Option 120, 1310 nm SR type this is –11 dBm
Option 121, 1550 nm SR type, -14 dBm.
Take note of the Attenuator setting.
6 Set the Optical Attenuator to Disable mode.
Note: do not switch OFF the Transmission Test Set laser.
Disconnect the Optical Attenuator Output from the Power
Meter and connect to the Transmission Test Set's Optical IN
Port (10 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 Transmission Test Set 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.
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.
Performance Tests
111
3
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