National Instruments SCXI -1125 用户手册

Refer to the 

 section of Chapter 3, 

, for more information about programmatically 

setting gain using range settings in MAX. For more information about 
programmatically setting gain using range settings in NI-DAQmx and 
Traditional NI-DAQ (Legacy), refer to the 

 section or the 

 section, respectively, of Chapter 5, 

The SCXI-1125 provides two filtering stages with an overall response of a 
four-pole Butterworth filter. You can control the cutoff frequency of the 
filter through software. You can choose 4 Hz or 10 kHz. For additional 
flexibility in cutoff frequency settings and for greater suppression, NI 
recommends combining the hardware filtering provided by the SCXI-1125 
with digital filtering. NI recommends using the Advanced Analysis 
functions of LabVIEW, LabWindows/CVI, or Measurement Studio. By 
combining hardware anti-aliasing with digital filtering, you can choose any 
cutoff frequency.

The Advanced Analysis functions are only available in LabVIEW Full or 
Professional Development Systems, and LabWindows/CVI Base or Full 
Development Systems.

Refer to the 

 section of Chapter 3, 

, for more information about programmatically 

setting the cutoff frequency of the filter in MAX. For more information 
about programmatically setting the cutoff frequency of the filter in 
NI-DAQmx and Traditional NI-DAQ (Legacy), refer to the 

 section or the 

 section, respectively, of 

Chapter 5, 

You can configure the SCXI-1125 to operate in multiplexed mode as 
described in Chapter 1, 

. Using this mode of 

operation, you can scan all input channels of the SCXI-1125 into one 
output channel that is read by the National Instruments DAQ device. You 
can also multiplex the CJC channel that connects to a sensor on the SCXI 
terminal block for making temperature measurements.