Owner's manual

User Guide
3
2. Technical specification
Minimum
Value
Nominal
Value
Maximum
Value
Visibility characteristics
Reported Visibility (metric) 12 metres - 32,000
metres
Reported Visibility (imperial) 39 feet - 104,985
feet
Visibility accuracy up to 10,000m - +/-10%
-
Visibility accuracy up to 20,000m - +/-20%
-
Optical characteristics
LED centre wavelength - 850nm
-
LED spectral bandwidth - +/-35nm
-
Pulse characteristics
Light pulse rate - 1KHz
-
3. Electrical specification
Minimum
Value
Nominal
Value
Maximum
Value
Main power supply for DSP and dew heaters
Power supply, +12V connection (DC
only)
9V
12V
28V
(1)
Current consumption sampling
continuously with dew heaters active
(at 12V DC)
-
200mA
248mA
Current consumption sampling
continuously with dew heaters
disabled (at 12V DC)
-
110mA
151mA
Current consumption without any
sampling occurring and dew heaters
disabled (at 12V DC)
-
21mA
30mA
Active power consumption with dew
heaters and RS232 communications
interface active
(2,3)
(at 12V DC)
-
200mA
250mA
Hood heater power supply
Hood heater voltage (AC or DC)
-
24V
(3)
30V
(4)
Hood heater wattage (at 24V AC or
DC)
-
60W
(5)
-
RS232 Communications
RS232 input threshold Low
0.8V
1.5V
-
RS232 input threshold High
-
2.0V
2.4V
RS232 input absolute maximum
-15V
-
+15V
RS232 input resistance
12K
-
-
RS232 output voltage low
-
-
0.4V
Weather characteristics
Precipitation Sensitivity
-
0.05 mm/h
-