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Chapter 2 Function Reference — Select_Signal
NI-DAQ FRM for PC Compatibles 2-374
©
National Instruments Corporation
Table 2-35.
Possible Values for
signal
Group signal Description
Timing and
Control
Signals
Used
Internally
by the
Onboard
DAQ-STC
ND_IN_START_TRIGGER
Start trigger for the DAQ and SCAN
functions
ND_IN_STOP_TRIGGER
Stop trigger for the DAQ and SCAN
functions
ND_IN_SCAN_CLOCK_TIMEBASE
Scan clock timebase for the SCAN
functions
ND_IN_CHANNEL_CLOCK_TIMEBASE
Channel clock timebase for the
DAQ and SCAN functions
ND_IN_CONVERT
Convert signal for the AI, DAQ and
SCAN functions
ND_IN_SCAN_START
Start scan signal for the SCAN
functions
ND_IN_EXTERNAL_GATE
External gate signal for the DAQ
and
SCAN functions
ND_OUT_START_TRIGGER
Start trigger for the WFM functions
ND_OUT_UPDATE
Update signal for the AO and WFM
functions
ND_OUT_UPDATE_CLOCK_TIMEBASE
Update clock timebase for the WFM
functions
ND_PLL_REF_SOURCE
Phase-locked loop (PLL)
reference clock source for
WFM
functions
ND_OUT_EXTERNAL_GATE
External gate signal for the WFM
functions
I/O
Connector
Pins
ND_PFI_0 through PFI_9
Signal present at the I/O connector
pin PFI0 through PFI9.
ND_GPCTR0_OUTPUT
Signal present at the I/O connector
pin
GPCTR0_OUTPUT
ND_GPCTR1_OUTPUT
Signal present at the I/O connector
pin
GPCTR1_OUTPUT
ND_FREQ_OUT
Signal present at the FREQ_OUT
output pin on the I/O connector