Chapter4 ConnectingSignals
©NationalInstruments Corporation 4-7 ATE Series User Manual
PFI3/GPCTR1_SOURCE DGND Input
Output
PFI3/Counter1 Source—As an input, this is one of the PFIs.
Asan output, this is the GPCTR1_SOURCE signal.
Thissignal reflects the actual source connected to the
general-purposecounter 1.
PFI4/GPCTR1_GATE DGND Input
Output
PFI4/Counter1 Gate—As an input, this is one of the PFIs.
Asan output, this is the GPCTR1_GATE signal. This signal
reflectsthe actual gate signal connected to the
general-purposecounter 1.
GPCTR1_OUT DGND Output Counter1 Output—This output is from the general-purpose
counter1 output.
PFI5/UPDATE* DGND Input
Output
PFI5/Update—Asan input, this is one of the PFIs.
Asan output, this is the UPDATE* signal. A high-to-low
edgeon UPDATE*indicates that the analog output primar y
groupis being updated.
PFI6/WFTRIG DGND Input
Output
PFI6/WaveformTrigger—As an input, this is one of the
PFIs.
Asan output, this is the WFTRIG signal. In timed analog
outputsequences, a low-to-high transition indicates the
initiationof the waveform generation.
PFI7/STARTSCAN DGND Input
Output
PFI7/Startof Scan—As an input, this is one of the PFIs.
Asan output, this is the STARTSCAN signal. This pin
pulsesonce at the start of each analoginput scan in the
intervalscan. A low-to-high transition indicates the start
ofthe scan.
PFI8/GPCTR0_SOURCE DGND Input
Output
PFI8/Counter0 Source—As an input, this is one of the
PFIs.
Asan output, this is the GPCTR0_SOURCE signal.
Thissignal reflects the actual source connected to the
general-purposecounter 0.
PFI9/GPCTR0_GATE DGND Input
Output
PFI9/Counter0 Gate—As an input, this is one of the PFIs.
Asan output, this is the GPCTR0_GATE signal. This signal
reflectsthe actual gate signal connected to the
general-purposecounter 0.
Table4-2. I/O Signal Summary for the AT E Series (Continued)SignalName Reference Direction Description