JDS Uniphase SWS15100, Руководство пользователя

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90 – Operating and Maintenance Instructions
2. Select the channels and follow the instructions in the Using SWS Software section.
An example of the fiber setup for zero loss is shown in Figure 76, in this case to detector
Channel 2. No messages are displayed if there is a problem, such as the wrong detector module
channel being used or forgetting to turn the transmitter unit on. The scans are stored by the
system.
Figure 76: Acquiring a Reference
The next set of reference scans taken overwrites the currently saved scans.
To avoid connector loss variation, do not disconnect the jumper or mating sleeve from the output
of the control module after the system has been zeroed.
Example Application: Zeroing for an FBG using a Circulator and Reflector
The system can be zeroed for an FBG using a circulator and a 100% reflector, instead of adding
a jumper between the receiver control module and detector module. The JDS Uniphase CR5500
circulator and the JDS Uniphase FR1315 reflector are used for this method. To zero the system
for an FBG, using a circulator and reflector:
1. Set up the equipment, as shown in Figure 77. Ensure that the same type of connectors are
used for zeroing as are used for testing the DUT, preferably use the same jumpers for both
procedures. In Figure 77, the reflector is connected to Port 2, all the light reflected back is
sent to Port 3, and Channel 2 is used for the measurement.
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