Section 3
Commands and Responses
Sensor Commands
31
3.1.1
Command R? - Send Remote Self-Test and Monitoring Message
Example response:
100,2.509,24.1,12.3,5.01,12.5,00.00,00.00,100,105,107,00,00,00,+021.
0,4063
The various fields in the response are as follows:
Field 1:
Space
The message starts with a space.
Field 2:
ABC
Heater state and error flags.
A=1 - Window heaters ON.
A=2 - Not used.
A=4 - A/D Control signal error.
B=1 - EPROM checksum error.
B=2 - Non-volatile memory checksum error.
B=4 - RAM error.
C=2 - Ired commanded OFF.
C=4 - Receiver test in progress (Ired OFF).
C=8 - Sensor power reset since last R? Command.
or any combination of these.
Field 3: 2.450 - 2.550 Internal Reference voltage.
Field 4: 9.00 - 36.00
Supply Voltage.
Field 5: 11.5 - 14.0
Internal operating voltage.
Field 6: 4.5 - 5.5
Internal operating voltage.
Field 7: 11.5 - 14.0
Internal operating voltage.
Field 8: 0.00 - 6.00
Forward Scatter background brightness.
Field 9: 0.00 - 6.00
Backscatter background brightness (not SWS-100 –
LW).
Field 10: 85 - 105
Transmitter power monitor.
Field 11: 80 - 120
Forward Receiver monitor.
Field 12: 80 - 120
Back Receiver monitor (not SWS-100 – LW).
Field 13: 00 - 99
Transmitter Window Contamination.
Field 14: 00 - 99
Not Used.
Field 15: 00 - 99
Not Used.
Field 16:
Temperature
o
C.
Field 17: 3300-4200
ADC Interrupts per second.
Table 3-2 Command R? Response
Summary of Contents for SWS-100-LW: SWS-200-LW
Page 1: ...SWS Lightweight Series Visibility Present Weather Sensors SWS 100 LW SWS 200 LW...
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