National Instruments NI 6115/6120 - Manual (Page 7)

Contents
NI 6115/6120 User Manual viii ni.com
Programmable Function Inputs ....................................................................... 3-12
Device and RTSI Clocks................................................................................. 3-12
RTSI Triggers ................................................................................................. 3-12
Chapter 4
Connecting Signals
I/O Connector ................................................................................................................ 4-1
I/O Connector Signal Descriptions ................................................................. 4-3
Types of Signal Sources ................................................................................................ 4-7
Floating Signal Sources .................................................................................. 4-7
Ground-Referenced Signal Sources ................................................................ 4-8
Connecting Analog Input Signals.................................................................................. 4-8
Connections for Ground-Referenced Signal Sources ..................................... 4-9
Connections for Nonreferenced or Floating Signal Sources........................... 4-11
Common-Mode Signal Rejection Considerations........................................... 4-12
Working Voltage Range ................................................................................................ 4-13
Connecting Analog Output Signals ............................................................................... 4-14
Connecting Digital I/O Signals ..................................................................................... 4-15
Correlating DIO Signal Connections............................................................................. 4-16
Power Connections ........................................................................................................ 4-18
Connecting Timing Signals ........................................................................................... 4-18
Programmable Function Input Connections ................................................... 4-20
DAQ Timing Connections .............................................................................. 4-20
TRIG1 Signal.................................................................................... 4-21
TRIG2 Signal.................................................................................... 4-22
STARTSCAN Signal........................................................................ 4-24
CONVERT* Signal .......................................................................... 4-26
AIGATE Signal ................................................................................ 4-27
SISOURCE Signal............................................................................ 4-27
SCANCLK Signal ............................................................................ 4-28
EXTSTROBE* Signal ...................................................................... 4-29
Waveform Generation Timing Connections ................................................... 4-29
WFTRIG Signal................................................................................ 4-29
UPDATE* Signal ............................................................................. 4-30
UISOURCE Signal ........................................................................... 4-31
General-Purpose Timing Signal Connections................................................. 4-32
GPCTR0_SOURCE Signal .............................................................. 4-32
GPCTR0_GATE Signal ................................................................... 4-33
GPCTR0_OUT Signal ...................................................................... 4-34
GPCTR0_UP_DOWN Signal........................................................... 4-35
GPCTR1_SOURCE Signal .............................................................. 4-35
GPCTR1_GATE Signal ................................................................... 4-36
GPCTR1_OUT Signal ...................................................................... 4-36