Campbell Scientific PWC100 Present Weather Sensor Calibrator - Manual (Page 10)

PWC100 Present Weather Sensor Calibrator
3.2 Starting the Tests
All PWC100 tests can be performed without the need to access the PWS with a
PC. Only once the tests are finished and if changes to the calibration constants
are needed, will a PC be required to change the system configuration.
If at any point the LEDs behave unexpectedly, check the status table at the end
of this section.
Step 1: Performing the visibility calibration
• Check that the PWC100 visibility calibrator unit is located correctly and
securely (refer to Appendix A for additional details).
• Connect the LEMO connector coming from the velocity unit to the LEMO
socket on the PWS (as detailed in Section 3.1). This will let the PWS
know you want to start the tests. Press the RESET/STOP button on the
PWC100. Within 10 seconds, all three LEDs should light up for
approximately 3 seconds. This indicates that the calibration unit has been
detected correctly by the PWS100 and that the LEDs are functioning
correctly.
• LED L and R should now be flashing slowly and all other LEDs should be
off.
• Once you are ready, press START.
• The test is now automated. LED L and R will stay illuminated until this
stage of the test is complete. This test will take approximately two
minutes.
• Upon successful completion of the test, LED L and LED C will be flashing
slowly, indicating that the next test is ready to be started.
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