Owner's manual

Appendix A. Options for File Save and Real Time Display
Display Option Description Notes
10 Hz Conc Trace gas concentration, in ppm. 1
Mean Conc Mean concentration measurements (ppm). If in site means or gradient mode, the mean
concentration is calculated at each valve switch. Otherwise the averaging period is specified
by dynamic parameter #12 (see section 3.4.4).
1
Conc StDev Standard deviation of the concentration (ppb), calculated over the period specified by
dynamic parameter #12. (see section 3.4.4).
1
Laser Temp Temperature (K) of the laser mounting plate.
Laser Heater Voltage applied to the heater on the laser mounting plate to maintain the laser at the
specified temperature.
DC Current Laser DC current (mA)
Pressure Pressure in the analyzer vacuum manifold.
The units are selected by the user in the Pressure Calculation screen.
Valve Status Status of the 16 digital IO ports used to control valves in the Site Means or Gradient mode.
The valve status is reported as a number from 0 to 65535.
Ref Signal Reference detector signal at the center of the spectral scan, (mV), corrected for gain and
offset.
1
Ref Trans Reference detector transmittance at the center of the spectral scan (%) 1
Ref Temp Reference detector temperature (°C)
Ref Peltier DAC command to supply current to the Peltier cooler to maintain the reference detector at
the specified temperature
Ref Gain Reference detector gain
Ref Offset Reference detector offset
Smp Signal Sample detector signal at the center of the spectral scan, (mV), corrected for gain and offset 1
Smp Trans Sample detector transmittance at the center of the spectral scan (%) 1
Smp Temp Sample detector temperature (°C)
Smp Peltier DAC command to supply current to the Peltier cooler to maintain the sample detector at the
specified temperature
Smp Gain Sample detector gain
Smp Offset Sample detector offset
Ref Signal B Reference detector signal at the center of the spectral scan, (mV), corrected for gain and
offset, for ramp B
2
Ref Trans B Reference detector transmittance at the center of the spectral scan (%), for ramp B 2
Smp Signal B Sample detector signal at the center of the spectral scan, (mV), corrected for gain and offset,
for ramp B
2
Smp Trans B Sample detector transmittance at the center of the spectral scan (%), for ramp B 2
10 Hz Conc B Trace gas concentration (ppm), for ramp B 2
Mean Conc B Mean concentration (ppm) for ramp B. If in site means or gradient mode, the mean
concentration is calculated at each valve switch. Otherwise the averaging period is specified
by dynamic parameter #12 (see section 3.4.4).
2
Conc StDev B Standard deviation of the concentration (ppb), calculated over the period specified by 2
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