B-12 Model 3786 Ultrafine Water-based Condensation Particle Counter
Command: SM,n,ttt,Vmin,tau,tfp,tbp
Scanning command
N = mode 5,6
ttt = sample interval in seconds (1 to 600)
Vmin=starting voltage in microvolts
tau= scanning constant in milliseconds (100-1000000)
tfp= front porch dwell time in seconds (0-600)
tbp= back porch dwell time in seconds (0-600)
Response: OK
Examples: SM,5,60,10000,8686,3,1
Command to begin a scanning sample
OK Response
(Sixty Z records reported - see Z record in Data Reporting
Records section in this Appendix)
SM Command to read back the current setting
5,60,10000,8686,3,1
Response (sent between Z records)
SO Set Optics Heater
The set optics heater command switches the optics heater on or off. The heater is
always in the “on” condition when the instrument is first powered up.
Command: SO,x Command to set optics tube heater on or off
x = 0 turns heater off, x = 1 turns heater on
Response: OK
Example: SO,0 Command turns heater off
OK Response
SO Command to read back the current setting
0 Response indicates heater is off
SOS Set Optics Temperature Set point
This command sets the control temperature set point for the optics section of the
UWCPC. The set point temperature is provided in tenths of a degree Celsius. This
parameter is not stored and will revert to the default values on the next power-up
cycle. The factory default setting of this value is 750 (75.0 degrees C).
Command: SOS,xxx Command to set the optics temperature control set point
xxx = 0 to 800
Response: OK Response
Example: SOS,750 Command to set Growth Tube temperature to 75.0 deg.
OK Response
SOS Command to read back the current setting
750 Response indicates the set point value
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