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NI EDIDS-2400 Series User Manual | © National Instruments | 133
NO FAULT: No faults exist with the sensor signal wires.
SHORT TO GND OR BATT: A short to ground or battery is present on one of the sensor signal wires.
UEGOX Back Pressure
Tip Strip: Manual Back Pressure
Detail: The air/fuel ratio results are dependent on exhaust system pressure. Many engine systems will have
exhaust systems which are very near atmospheric pressure. In this case, this control may be set to a constant value
of 1.013 bar. However, if exhaust system pressure is expected to depart from atmospheric pressure at the location
of the sensor, then the pressure should be wired to this control.
UEGOX Lambda Range
Tip Strip: UEGO Lambda Range
Detail: Adjusts the amplification range for lambda measurement. Two amplification modes are available: One mode,
having an amplifier gain factor of 8, allows for measurements of lambda from 0.65 to air. The other mode, having
an amplifier gain factor of 17, allows for measurements of lambda = 0.75 to air. It is recommended to use the gain
factor of 17 for operation above lambda = 1.5. This gain factor provides better resolution in the lean region. The
gain factor can be changed at any time during operation.
UEGO & EGO Filter Cutoff Freq
Tip Strip: UEGO and EGO filter cutoff frequency
Units: Hz
Detail: The cutoff frequency for a second-order Butterworth filter applied to all UEGO and EGO channel results.
Stoichiometric A/F Ratio
Summary of Contents for NI EDIDS-2400 Series
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Page 241: ...NI EDIDS 2400 Series User Manual National Instruments 241 Aux PWX 2 4 See above descriptions...
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Page 308: ...308 ni com NI EDIDS 2400 Series User Manual 8 Important Information...