Appendix B
Troubleshooting
B.1
B.1.1
B.1.2
B.2
B.2.1
Measurement data are not updated
B.2.2
Snow height increase is retarded
B.2.3
Recorded data show frequent data gaps
B.3
B.3.1
B.3.2
Firmware update via RS-485 is aborted
B.4
B.4.1
Data logger receives no SDI-12 data
B.4.2
The USH-9 is not detected by a SDI-12 master device
B.5
B.5.1
B.1
Devices
B.1.1
The USH-9 is not responding
Reason
Solution
The power supply is not connected or turned
off.
Check if the power supply is connected and on.
The polarity of connected power supply wires is
wrong.
Check the polarity of connected wires.
Wrong sensor cable.
Use the original sensor cable configured by Som-
mer Messtechnik (only applicable to Sommer
Messtechnik cables).
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Manual
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