
Appendix B. Serial Communications with the CSAT3
TABLE B-1. RS-232 Command Codes
Unprompted data output mode. Send data and make
measurements at the rate specified by the An command.
Send the RS-232 status (TABLE B-9) and trigger the next
measurement now.
Send wind data and trigger the next measurement now.
Send the RS-232 status (TABLE B-9). The next
measurement will be made in sync with the CSAT3 timer.
Send the wind data. The next measurement will be made in
sync the CSAT3 timer.
Begin acquiring the signals in sync with this command.
Turn the analog outputs off in sync with the next trigger.
Turn the analog outputs on with ±32 m s
–1
full-scale range in
sync with the next trigger
Turn the analog outputs on with ±64 m s
–1
full-scale range in
sync with the next trigger
1 The CSAT3 will ignore this command if a datalogger (SDM) is triggering
the anemometer.
2 After the PC takes over as the trigger source it must continue to trigger the
CSAT3 at the rate specified in the Execution Parameter (An). If the
CSAT3 does not receive a trigger for three seconds it will enter the Lost
Trigger state. The Execution Parameter (An) will have to be issued in
order for the anemometer to exit the Lost Trigger state.
3 Acquire signal commands.
4 The PC must send the second byte of this command (2..e) within two
seconds of the first byte or the anemometer will reset itself. It will then
acquire the signal using the Execution Parameter in static memory.
B-2
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