JDS Uniphase SWS15100, Руководство пользователя

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54 – Getting Started
3. The ideal trace displayed on the screen is a straight line at 0 dB insertion loss, with a noise
level less than
±
0.025 dB.
4. Repeat the procedure for each available channel.
If all traces acquired are within the
±
0.025 dB noise specification, the detector modules are
functioning properly. If any channel fails, remove the jumper, clean the ferrules, and redo both the
reference and data acquisition. If the channels are still noisy, or if the insertion loss deviates by
more than 0.05 dB from 0, call JDS Uniphase for service.
Acquire the dark voltage reference. To acquire dark voltage readings, follow the instructions in
the
Using SWS Software section.
If the data cannot be collected, or if the system issues a “System timed out” or
“Communications” error message, there may be a problem with the computer interface to the
receiver. Confirm that the data acquisition board or parallel port connector is properly configured
and operational. See the
Testing the Data Acquisition Board section.
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