National Instruments Module SCXI-1125 - Manual (Page 6)

Contents
SCXI-1125 User Manual vi ni.com
Chapter 3
Configuring and Testing
SCXI-1125 Software-Configurable Settings ................................................................. 3-1
Common Software-Configurable Settings ...................................................... 3-1
Filter Bandwidth ............................................................................... 3-1
Gain/Input Range.............................................................................. 3-1
Connecting the SCXI-1125 in an SCXI Chassis
to an E/M Series DAQ Device for Multiplexed Scanning ........................... 3-2
Connecting the SCXI-1125 in a PXI/SCXI Combination Chassis
to an E/M Series DAQ Device for Multiplexed Scanning ........................... 3-2
Configurable Settings in MAX...................................................................................... 3-2
NI-DAQmx ..................................................................................................... 3-3
Creating a Voltage Global Channel or Task..................................... 3-3
Traditional NI-DAQ (Legacy) ........................................................................ 3-4
Configuring Module Property Pages
in Traditional NI-DAQ (Legacy)................................................... 3-5
Creating a Virtual Channel ............................................................... 3-6
Verifying the Signal ...................................................................................................... 3-6
Verifying the Signal in NI-DAQmx Using a Task or Global Channel ........... 3-6
Verifying the Signal in Traditional NI-DAQ (Legacy) .................................. 3-7
Verifying the Signal Using Channel Strings .................................... 3-7
Verifying the Signal Using Virtual Channel .................................... 3-8
Chapter 4
Theory of Operation
Gain ............................................................................................................................... 4-1
Filter Bandwidth and Cutoff Frequency........................................................................ 4-2
Operating in Multiplexed Mode .................................................................................... 4-2
Multiplexed Hardware Operation Theory....................................................... 4-3
Operating in Parallel Mode ........................................................................................... 4-3
Theory of Parallel Hardware Operation.......................................................... 4-4
Chapter 5
Using the SCXI-1125
Temperature Measurements Using Thermocouples ...................................................... 5-1
Making High-Voltage Measurements ........................................................................... 5-4
Developing Your Application in NI-DAQmx ............................................................... 5-5
Typical Program Flowchart ............................................................................ 5-5
General Discussion of Typical Flowchart....................................................... 5-7
Creating a Task Using DAQ Assistant or Programmatically ........... 5-7
Adjusting Timing and Triggering..................................................... 5-7