USER'S GUIDE____________________________________________________________________
74 __________________________________________________________________ M210543EN-E
If warnings or errors are detected, one or several of the following texts
appear at the end of the message.
See Table 15 below and Table 16 below.
Table 15 Hardware Error Texts
Error Text Description
Backscatter High Receiver or transmitter contamination signal has
increased more than the ALARM limit given in the
configuration allows.
Transmitter Error LEDI signal is more than 7 V or less than -8 V.
±12 V Power Error Receiver/transmitter power is less than 10 V or
more than 14 V.
Offset Error Offset frequency is <80 or over 170 (PWC22/52
hardware).
Signal Error Signal frequency + offset frequency = 0, Signal
frequency - offset frequency < -1
Receiver Error Too low signal in receiver backscatter
measurement.
Data RAM Error Error in RAM read/write check.
EEPROM Error EEPROM checksum error.
TS Sensor Error Measurement is out of limits.
DRD Error RAINCAP
®
signal is close to zero.
Luminance Sensor Error PWL111 signal is out of limits.
Table 16 Warnings
Warning Description
Backscatter Increased Receiver or transmitter contamination signal has
increased above the WARNING limit selected in the
configuration.
Transmitter Intensity
Low
LEDI signal less than -6 V.
Receiver Saturated AMBL signal is less than -9 V.
Offset Drifted Offset Drifted
Visibility Not Calibrated Visibility calibration coefficient has not been
changed from the default value (see section CAL
below).
CAL
The CAL command is used to calibrate the visibility measurement. The
calibration is done by using opaque glass plates with known scatter
properties. The plates belong to the PWA11 calibrator kit.
The command is the following:
CAL Calibrator_signal_value
For example:
>CAL 485
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