Sensornet ORYX DTS, Руководство пользователя

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Oryx DTS User Manual v4 Page 87
TROUBLESHOOTING
Problem Checks / Corrective Action
Measurements not
taking place - Check reported on-board temperature is within limits
- Check supply voltage is within limits (reported in main log)
- Check laser temperature within limits (reported in Oryx
system log)
- Check all ‘Power’ LEDs are illuminated during a
measurement
- Check Main log and Oryx system log for other errors
Temperature trace
has excessive noise
or does not read
correctly to the end
of the fibre - Clean connectors
- Re-splice fibre joints
- Check cable run for sharp bends / breaks
- Check fibre types use in cable run
- Point losses and a fiber break can easily be identified from
the raw signal display. Typical connector loss = 0.3dB
Typical fusion splice loss = 0.1dB (one way)
Temperature trace
exhibits step
changes at fibre
joints - Clean connectors
- Re-splice fibre joints
- Use double-ended method
Unstable calibration
– temperature trace
jumps excessively
after each
measurement
Incorrect slope or
offset on
temperature trace - Check reference sections have been chosen
appropriately. Avoid reference sections across a
temperature step
- Try using fixed calibration constants
- Clean connectors
Error saving data /
writing to file or disk - Ensure there are no spaces at the end of Installation or
Channel names
- De-select read only permissions for all files and folders in
C:\Sensornet DTS and all files and folders in the Oryx
ROOT folder
- ODC should be run under administrator privileges
No communications
with Oryx
- Check PC serial com port settings (Oryx default:
115200b/s; 8bit; 1 stop bit; no flow control
- Check Oryx COM port settings