Chapter 5 _________________________________________________________ Theory of Operation
VAISALA _______________________________________________________________________ 155
Event Messages
This section describes the Event Messages of the different units.
The Present Weather Detector PWD32 does not support Event Messages.
The interface unit creates PWD32 related Event Messages where
possible.
Table 24 Measurement Unit Event Messages
Measured MOR above upper
measurement range limit
Measured MOR below lower measurement
range limit
Cal1:calibration procedure
ongoing
Measurement Unit calibration procedure is
ongoing.
Cal2:opaque glass test failed
Measurement Unit calibration procedure
failed.
Repeat Measurement Unit calibration
Cal8:calibration not valid
Measurement Unit calibration not valid.
Repeat Measurement Unit calibration
WinCon1:contamination warning
Measurement Unit windows contaminated.
Clean windows in the near future.
WinCon2:contamination alarm
Measurement Unit windows contaminated.
Clean windows immediately.
Measurement Unit windows are clogged.
Clean windows immediately.
Measurement Unit CPU memory failure.
If the failure persists after power-resets of
the measurement unit, the measurement
CPU2:visibility sample sequence
failed
Measurement Unit receiver or CPU failure
CPU4:FSC measurement CPU
internal power supply failure
Measurement Unit CPU internal power
supply failure
CPU8:temperature sensor failure
Measurement Unit CPU temperature
sensor failure
Tperi1:dew heater failure
Measurement Unit transmitter dew heater
failure
Tperi2:hood heater failure
Measurement Unit transmitter hood heater
failure
Measurement Unit transmitter light source
aged
Measurement Unit transmitter light source
failure
TwinCon1:backscatter high
Backscatter signal level increased due to
some disturbance in the light path
(Measurement Unit transmitter)
TwinCon2:backscatter
measurement failure
Backscatter measurement failure
(Measurement Unit transmitter)
TwinCon4:total reflection
measurement failure
Total reflection measurement failure
(Measurement Unit transmitter)