National Instruments 1142 用户手册
Chapter 5
Using the SCXI-1141/1142/1143 Module
© National Instruments Corporation
5-5
Analog Input»General
Properties»Advanced»Gain
and Offset»Gain Value
Properties»Advanced»Gain
and Offset»Gain Value
AI.Gain
Specifies a gain factor to apply
to the signal conditioning
portion of the channel. The
SCXI-1141/1142/1143 supports
1, 2, 5, 10, 20, 50, or 100.
to the signal conditioning
portion of the channel. The
SCXI-1141/1142/1143 supports
1, 2, 5, 10, 20, 50, or 100.
Analog Input»General
Properties»Advanced»High
Accuracy Settings»Auto Zero
Mode
Properties»Advanced»High
Accuracy Settings»Auto Zero
Mode
AI.AutoZeroMode
Specifies when to measure
ground. NI-DAQmx subtracts
the measured ground voltage
from every sample.
ground. NI-DAQmx subtracts
the measured ground voltage
from every sample.
Analog Input»General
Properties»Advanced»Input
Configuration»Coupling
Properties»Advanced»Input
Configuration»Coupling
AI.Coupling
Specifies the input coupling
of the channel. The
SCXI-1141/1142/1143 supports
DC and GND coupling.
of the channel. The
SCXI-1141/1142/1143 supports
DC and GND coupling.
Analog Input»General
Properties»Filter»Analog
Lowpass»Cutoff Frequency
Properties»Filter»Analog
Lowpass»Cutoff Frequency
AI. LowPass.CutoffFreq
Specifies the lowpass cutoff
frequency
frequency
Table 5-2. NI-DAQmx Thermocouple Measurement Properties
Property
Short Name
Description
Analog Input»Temperature»
Thermocouple»Type
Thermocouple»Type
AI.Thrmcpl.Type
Specifies the type of thermocouple
connected to the channel.
connected to the channel.
Analog Input»Temperature»
Thermocouple»ScaleType
Thermocouple»ScaleType
AI.Thrmcpl.ScaleType
Specifies the method or equation form
that the thermocouple scale uses.
that the thermocouple scale uses.
Table 5-1. NI-DAQmx Voltage Measurement Properties (Continued)
Property
Short Name
Description