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Contents
NI 6115/6120 User Manual viii ni.com
Timing Signal Routing..................................................................................................3-10
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