National Instruments SCXI-1120 - Manual (Page 6)

Contents
© National Instruments Corporation vii SCXI-1120 User Manual
Single-Channel Measurements .......................................................................... 5-3
Direct Measurements ............................................................................. 5-3
Parallel Output ........................................................................... 5-3
Multiplexed Output .................................................................... 5-4
Indirect Measurements ........................................................................... 5-4
Measurements from Other Modules .......................................... 5-4
Measurements from the SCXI-1120 via Another Module ......... 5-4
Scanning Measurements .................................................................................... 5-5
1. Data Acquisition Board Setup Programming.................................... 5-6
Counter 1 and SCANDIV .......................................................... 5-8
2. Module Programming ....................................................................... 5-8
Single-Module Parallel Scanning............................................... 5-8
Single-Module Multiplexed Scanning (Direct).......................... 5-9
Single-Module Multiplexed Scanning (Indirect) ....................... 5-9
Channel Scanning from Other Modules......................... 5-9
Channel Scanning From the SCXI-1120 via Another
Module ...........................................................................
5-9
Multiple-Module Multiplexed Scanning.................................... 5-9
Multiple-Chassis Scanning ........................................................ 5-10
3. Programming the Slot 0 Hardscan Circuitry ..................................... 5-10
4. Acquisition Enable, Triggering, and Servicing................................. 5-12
Scanning Examples ........................................................................................................ 5-12
Example 1 .......................................................................................................... 5-12
Example 2 .......................................................................................................... 5-13
Example 3 .......................................................................................................... 5-14
Appendix A
Specifications
........................................................................................................................ A-1
Analog Input .................................................................................................................. A-1
Cold-Junction Sensor ..................................................................................................... A-2
Physical .......................................................................................................................... A-3
Operating Environment .................................................................................................. A-3
Storage Environment...................................................................................................... A-3
Appendix B
Rear Signal Connector
...................................................................................................... B-1
Rear Signal Connector Signal Descriptions ....................................................... B-2
Appendix C
SCXIbus Connector
........................................................................................................... C-1
SCXIbus Connector Signal Descriptions ........................................................... C-3
Appendix D
SCXI-1120 Front Connector
........................................................................................... D-1
Front Connector Signal Descriptions ............................................................................. D-2