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Chapter 4
Signal Connections
©
National Instruments Corporation
4-5
6711/6713/6715 User Manual
PFI4/GPCTR1_GATE
DGND
Input
Output
PFI4/Counter 1 Gate—As an input, this is one of the PFIs.
As an output, this is the GPCTR1_GATE signal. This signal
reflects the actual gate signal connected to the
general-purpose counter 1.
GPCTR1_OUT
DGND
Output
Counter 1 Output—This output is from the general-purpose
counter 1 output.
PFI5/UPDATE*
DGND
Input
Output
PFI5/Update—As an input, this is one of the PFIs.
As an output, this is the UPDATE* signal. A high-to-low
edge on UPDATE* indicates that the analog output
waveform generation group is being updated.
PFI6/WFTRIG
DGND
Input
Output
PFI6/Waveform Trigger—As an input, this is one of the
PFIs.
As an output, this is the WFTRIG signal. In timed analog
output sequences, a low-to-high transition indicates the
initiation of the waveform generation.
PFI7
DGND
Input
PFI7—As an input, this is one of the PFIs. PFI7 cannot be
an output.
PFI8/GPCTR0_SOURCE
DGND
Input
Output
PFI8/Counter 0 Source—As an input, this is one of the
PFIs.
As an output, this is the GPCTR0_SOURCE signal. This
signal reflects the actual source connected to the
general-purpose counter 0.
PFI9/GPCTR0_GATE
DGND
Input
Output
PFI9/Counter 0 Gate—As an input, this is one of the PFIs.
As an output, this is the GPCTR0_GATE signal. This signal
reflects the actual gate signal connected to the
general-purpose counter 0.
GPCTR0_OUT
DGND
Output
Counter 0 Output—This output is from the general-purpose
counter 0 output.
FREQ_OUT
DGND
Output
Frequency Output—This output is from the frequency
generator output.
1
The +5 V line on the connector of the DAQCard-6715 is fused at 0.75 A, however, the actual current available can be limited
below this value by the host computer. National Instruments recommends limiting current from this line to 250 mA.
Table 4-1.
Signal Descriptions for I/O Connector Pins (Continued)
Signal Name
Reference
Direction
Description
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