Ecotech Acoem Serinus 30 - Figure 57 - Digital Pots Menu Screen

Serinus® 30 User Manual 3.3
Page 72
Figure 57 – Digital Pots Menu Screen
PGA Gain
1 - 128
Displays the gain of the PGA.
Input Pot
180 - 230
Reduces the raw signal to measurable level.
Conc. Voltage (RAW)
0 - 3.1
The concentration voltage measured by the analog to
digital converter.
Conc. Voltage
0 - 3.1
The concentration voltage after adjustment for the
PGA gain factor.
Meas. Zero Pot (COARSE)
125 - 225
Electronic zero for the measure channel.
Meas. Zero Pot (FINE)
0 - 255
Electronic zero for the measure channel.
Ref. Voltage
3.5 - 4.5
The reference voltage of the detector.
Source Pot
227
Adjusts the drive current for the IR source.
IR Source
4.9 - 5.1
The voltage driving the IR source.
Cooler Pot
45
Adjusts the drive current for the cooler.
Cooler Voltage
1.15 - 1.20
The voltage being applied to the cooler.
Test Meas. Pot
0
This Digital Pot is used for diagnostics only. When in
the Electrical or Preamp Diagnostic Mode, this
Digital pot should be adjusted from 0 - 255. This will
produce a change in the concentration voltage as
well as the indicated gas concentration.
Test Ref. Pot
0
This Digital Pot is used for diagnostics only. When in
the Electrical or Preamp Diagnostic Mode, this
Digital Pot should be adjusted from 0 - 255. This will
produce a change in the reference voltage.
Diagnostic Mode
Operate
Operate (default): Puts the instrument in normal
operation mode.
Electrical: Injects an artificial test signal into the
electronic processing circuitry on the main controller
PCA to verify that the circuitry is operating correctly.
When in this Diagnostic Mode, adjust the Test Meas
Pot from 0 - 255. This will produce a change in the
concentration voltage as well as the indicated gas
concentration. Adjust the Test Ref Pot from 0 - 255
to produce a change in the reference voltage.