National Instruments 1142 用户手册

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This chapter discusses configuring the SCXI-1141/1142/1143 in MAX 
using NI-DAQmx, creating and testing a virtual channel, global channel, 
and/or task.

NI recommends that you have NI-DAQmx 8.3 or later installed.

Refer to the SCXI Quick Start Guide if you have not already configured the chassis.

This section describes how to set the gain/input signal range and how to 
configure your software for compatible sensor types. It also describes how 
to perform configuration of these settings for the SCXI-1141/1142/1143 in 
NI-DAQmx. For more information on the relationship between the settings 
and the measurements and how to configure settings in your application, 
refer to Chapter 4, 

This section describes the most frequently used software-configurable 
settings for the SCXI-1141/1142/1143. Refer to Chapter 4, 

, for a complete list of software-configurable settings.

Gain/input range is a software-configurable setting that allows you to 
choose the appropriate amplification to fully utilize the range of the 
E/M Series DAQ device. In most applications NI-DAQ chooses and sets 
the gain for you determined by the input range. This feature is described in 
Chapter 4, 

. Otherwise, you should determine the 

appropriate gain using the input signal voltage range and the full-scale 
limits of the SCXI-1141/1142/1143 output. You can select a gain of 1, 2, 5, 
10, 20, 50, or 100 on a per channel basis.