C-4 Electrostatic Classifier Model 3082 and SMPS Spectrometer Model 3938
Table C-2
Electrostatic Classifier Firmware Commands List (select)
RSHV returns the high voltage setpoint.
Example: RSHV returns a value in the range 0.0 – 10000.0 v.
RSDETINFLOW returns the detector inlet flow setpoint.
Example: RSDETINFLOW returns 0 or 1, where 0 = low flow and 1 =
high flow
Read SMPS
Scan Parameters
RSSCANPARAM returns the SMPS scan parameters.
Example: RSSCANPARAM returns the following parameters.
tres, time resolution in milliseconds, fixed at 20 ms.
tlow, time DMA voltage held at vmin in milliseconds, 0 to 10000 ms
tup, time DMA voltage is ramped up in milliseconds, 0 to 300000 ms
thigh, time DMA voltage held at vmax in milliseconds, 0 to 10000 ms
tdown, time DMA voltage ramped down in milliseconds, 0 to 300000 ms
vmin, starting DMA voltage, 1.0 to 100000.0 v
vmax, ending DMA voltage, 1.0 to 10000.0 v
pol, polarity of DMA voltage, where -1 = negative voltage, 0 = detectors
with no voltage, 1 = DMA positive voltage
Read Classifier
Particle Diameter
RSPARTICLEDIAM returns the particle diameter setpoint.
Example: RSPARTICLEDIAM returns particle diameter in nanometers
from 1 to 5000
Read Tube
Length Between
Classifier and
Detector
RSTUBELENGTH returns the length of the tube between the classifier
and detector.
Example: RSTUBELENGTH returns 0.1 to 100.0 centimeters
Read Control of
Classifier
RSCONTROL returns information about classifier control.
Example: RSCONTROL returns OPEN, AIM, or GUI where OPEN =
classifier control, AIM = Aerosol Instrument Manager software control,
GUI = display screen control
Reads GPIO
Digital Output 0
RSGPIODIGOUT0 returns the setpoint GPIO digital output 0.
Example: RSGPIODIGOUT0 returns the values 0 or 1, where 0 = digital
low and 1 = digital high.
Reads GPIO
Digital Output 1
RSGPIODIGOUT1 returns the setpoint GPIO digital output 1.
Example: RSGPIODIGOUT1 returns the values 0 or 1, where 0 = digital
low and 1 = digital high.
Reads DMA
EEPROM Model
Number
RSDMAMN returns the DMA model number.
Example: RSDMAMN returns 3081A or 3085A
Reads DMA
EEPROM Serial
Number
RSDMASN returns the DMA serial number.
Example: RSDMASN returns 30811234
RSDMALENGTH reads DMA length, in meters. Returns 1.0e-5 if no
DMA is selected.
RSDMAID reads DMA inner diameter, in meters. Returns 1.0e-5 if no
DMA is selected.
RSDMAOD reads DMA outer diameter, in meters. Returns 1.0e-5 if no
DMA is selected.
RSDMATYPE reads the DMA type. Either 1 (cylindrical) or 2 (radial).
RSCUSTOMDMALENGTH reads length of custom DMA, in meters. Set
to 0.44369 by default (value for 3081 DMA).
Read Custom
DMA Inner
Diameter
RSCUSTOMDMAID reads DMA inner diameter of custom DMA, in
meters. Set to 0.01874 by default (value for 3081 DMA).
Read Custom
DMA Outer
Diameter
RSCUSTOMDMAOD reads DMA outer diameter of custom DMA, in
meters. Set to 0.03922 by default (value for 3081 DMA).
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