Vaisala PWD22/52 - Other Commands

USER'S GUIDE____________________________________________________________________
76 __________________________________________________________________ M210543EN-E
Or in the case of failure in the receiver (PWC22/52) one of the following:
ZERO SIGNAL: FAIL
ZERO SIGNAL: NOISE HIGH
CHEC
The CHEC command has no parameters and it is used in calibrating
visibility to display the one-minute average signal frequency in hertz
(Hz).
The displaying is terminated by pressing ESC. If you press any other key,
the displaying will only be paused. In the beginning, the four-location
buffer, which is used to calculate the average, is filled with the first
value.
When the calibrator is installed, the value displayed in the message
should be the same as printed on the calibrator glass plate.
Give the following command:
>CHEC
The output is the following:
SCALED FREQUENCY AVE (1 MIN)
499.9938
499.9880
DRY ON and WET
The DRY ON and WET commands are used to check and adjust the
operation of the Vaisala RAINCAP
®
Rain Sensor measurement.
DRY ON
The DRY ON command is used to set the reference level of the dry
signal for the RAINCAP
®
signal normalization calculation. When giving
the
DRY ON command, the sensor surface must be dry and also the
weather conditions must be dry.
The output is the following:
DRD DRY OFFSET 715.6
The DRY OFFSET value must be between 700 and 900, when the
RAINCAP
®
hardware operates normally. The DRY command without a
parameter just shows this parameter.