National Instruments NI PCI-6110, NI PCI-6111 Chapter 4 Connecting Signals

Contents
NI PCI-6110/6111 User Manual vi ni.com
Chapter 4
Connecting Signals
I/O Connector................................................................................................................4-1
I/O Connector Signal Descriptions.................................................................4-3
Connecting Analog Input Signals..................................................................................4-8
Types of Signal Sources................................................................................................4-9
Floating Signal Sources..................................................................................4-9
Ground-Referenced Signal Sources................................................................4-9
Differential Measurements............................................................................................4-10
Differential Connection Considerations..........................................................4-10
Differential Connections for Ground-Referenced
Signal Sources............................................................................... 4-11
Differential Connections for Nonreferenced or Floating
Signal Sources............................................................................... 4-12
Common-Mode Signal Rejection Considerations...........................................4-12
Working Voltage Range................................................................................................4-13
Analog Output Signal Connections...............................................................................4-14
Digital I/O Signal Connections.....................................................................................4-15
Power Connections........................................................................................................4-16
Timing Connections......................................................................................................4-16
Programmable Function Input Connections................................................... 4-17
DAQ Timing Connections..............................................................................4-18
TRIG1 Signal....................................................................................4-19
TRIG2 Signal....................................................................................4-20
STARTSCAN Signal........................................................................4-22
CONVERT* Signal..........................................................................4-24
AIGATE Signal................................................................................4-25
SISOURCE Signal............................................................................4-26
SCANCLK Signal............................................................................4-26
EXTSTROBE* Signal......................................................................4-27
Waveform Generation Timing Connections...................................................4-27
WFTRIG Signal................................................................................4-28
UPDATE* Signal.............................................................................4-29
UISOURCE Signal...........................................................................4-30
General-Purpose Timing Signal Connections.................................................4-30
GPCTR0_SOURCE Signal..............................................................4-31
GPCTR0_GATE Signal................................................................... 4-31
GPCTR0_OUT Signal......................................................................4-32
GPCTR0_UP_DOWN Signal...........................................................4-33
GPCTR1_SOURCE Signal..............................................................4-33
GPCTR1_GATE Signal................................................................... 4-34