Testing The Parallel Port Interface; Testing The Data Acquisition Board; Testing The Output Ports - JDS Uniphase SWS15100 User Manual

Testing the Parallel Port Interface

If problems are encountered with the parallel port interface, it can be tested easily by unplugging
the receiver and substituting a standard printer. Use an application program such as Notepad to
print a small file. If the print procedure is successful, the parallel interface works. Verify that the
parallel port installed in the computer is a standard DB25M port. The printer port must be in SPP
mode to operate with the SWS.

Testing the Data Acquisition Board

Test the data acquisition board if the software does not produce the expected results. For
example, if listing channels is not possible, test the data acquisition board. Prior to testing the
data acquisition board, ensure that the 50-pin connector on the board is not damaged. Remove
the 50-pin ribbon cable and inspect the pins on the connector. Verify that none are broken or
bent. Reinsert the cable and try again. If the problem persists, test the data acquisition board.
Set the DIP switch or jumper settings for the board to the default values, which are listed in the
board's user's manual. The default addresses need to be changed only when there is a conflict
on the computer.
To test the data acquisition board, its software needs to be installed, following the instructions in
the user manual for the board. The SWS software does not need to be installed to test the data
acquisition board. Likewise, the data acquisition board software is not needed for the SWS to
run.
To test the data acquisition board:
1. Follow the instructions provided in the data acquisition board manual, specifically the
Installation and Troubleshooting sections.

Testing the Output Ports

To test that the output ports are functioning properly on the source optics module:
1. Ensure that the source optics module is not scanning. The Laser Sweeping light on the front
of the unit is off when the unit is not scanning.
2. Put the tunable laser source into manual mode by ensuring that the Remote key on the front
panel is not lit. The Remote key toggles on and off when it is pressed.
3. Set the power on the laser source to 3 dBm. Press the Enable key on the front panel. Verify
that the output laser power is within 0.5 dB of the set value using a power meter.
4. Measure the IL through the SOM to the output ports using an external power meter hooked
up to the Output 1, Output 2, Output 3, or Output 4 port on the front of the source optics
module. The nominal IL value for one output is approximately 6 dB. There is a 3 dB increase
in loss for the two-output module and a 6 dB increase in loss for the four-output module. The
measured power specifications are:
1-output cassette
52 – Getting Started
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>-8 dBm