©
National Instruments Corporation
v
Contents
Conventions ...................................................................................................................vii
Reconfigurable I/O Documentation...............................................................................viii
Related Documentation..................................................................................................ix
About the NI 7831R.......................................................................................................1-1
Using PXI with CompactPCI.........................................................................................1-2
Overview of Reconfigurable I/O ...................................................................................1-3
Flexible Functionality .......................................................................1-3
User-Defined I/O Resources .............................................................1-4
Device-Embedded Logic and Processing .........................................1-4
Reconfigurable I/O Architecture .....................................................................1-4
Reconfigurable I/O Applications.....................................................................1-5
LabVIEW FPGA Module................................................................................1-5
LabVIEW Real-Time Module .........................................................................1-6
Cables and Optional Equipment ....................................................................................1-7
Custom Cabling .............................................................................................................1-8
Safety Information .........................................................................................................1-9
Chapter 2
Hardware Overview of the NI 7831R
Connecting Analog Input Signals ..................................................................................2-5
Types of Signal Sources ................................................................................................2-7
Differential Connection Considerations (DIFF Input Mode)..........................2-9
Differential Connections for Ground-Referenced Signal Sources....2-9
Differential Connections for Nonreferenced
or Floating Signal Sources .............................................................2-10