National Instruments PCI-6023E, PCI-6024E, PCI-6025E Chapter 4 Signal Connections

Contents
PCI-6023E/6024E/6025E User Manual vi
© National Instruments Corporation
RTSI Triggers .................................................................................................3-8
Chapter 4
Signal Connections
I/O Connector................................................................................................................4-1
Analog Input Signal Overview......................................................................................4-8
Types of Signal Sources..................................................................................4-8
Floating Signal Sources....................................................................4-9
Ground-Referenced Signal Sources.................................................. 4-9
Analog Input Modes........................................................................................4-9
Analog Input Signal Connections..................................................................................4-11
Differential Connection Considerations (DIFF Input Configuration)............ 4-13
Differential Connections for Ground-Referenced Signal Sources... 4-14
Differential Connections for Nonreferenced or
Floating Signal Sources.................................................................4-15
Single-Ended Connection Considerations ......................................................4-17
Single-Ended Connections for Floating Signal Sources
(RSE Configuration)...................................................................... 4-18
Single-Ended Connections for Grounded Signal Sources
(NRSE Configuration) ...................................................................4-18
Common-Mode Signal Rejection Considerations...........................................4-19
Analog Output Signal Connections...............................................................................4-20
Digital I/O Signal Connections .....................................................................................4-21
All Boards.......................................................................................................4-21
PCI-6025E Only.............................................................................................. 4-22
Port C Pin Assignments.................................................................................................4-23
Digital I/O Power-up State............................................................................................4-24
Changing DIO Power-up State to Pulled Low................................................4-24
Timing Specifications....................................................................................................4-25
Mode 1 Input Timing...................................................................................... 4-27
Mode 1 Output Timing ...................................................................................4-28
Mode 2 Bidirectional Timing..........................................................................4-29
Power Connections........................................................................................................4-30
Timing Connections......................................................................................................4-30
Programmable Function Input Connections ...................................................4-31
DAQ Timing Connections..............................................................................4-32
SCANCLK Signal ............................................................................4-33
EXTSTROBE* Signal......................................................................4-33
TRIG1 Signal....................................................................................4-34
TRIG2 Signal....................................................................................4-35
STARTSCAN Signal........................................................................4-36
CONVERT* Signal..........................................................................4-38
PCI.book Page vi Wednesday, September 16, 1998 9:09 AM