National Instruments 6023E, 6024E, 6025E Table4-2. I/O Connector Signal Descriptions (Continued)

Chapter4 SignalConnections
6023E/6024E/6025EUser Manual 4-6 ni.com
PFI5/UPDATE* DGND Input
Output
PFI5/Update—asan input, this is one of the PFIs.
Asan output, this is the UPDATE* (AOUpdate) signal.A
high-to-lowedge on UPDATE*indicates that the analog
outputprimary group is being updated for the 6024E or
6025E.
PFI6/WFTRIG DGND Input
Output
PFI6/WaveformTrigger—as an input, this is one of the
PFIs.
Asan output, this is the WFTRIG (AO Start Trigger) signal.
Intimed analog output sequences, a low-to-high transition
indicatesthe initiation of 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 (AI Scan Start)
signal.This pin pulses once at the start of each analog input
scanin the interval scan. A low-to-high transition indicates
thestart of the 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-purposecount er 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-purposecount er 0.
GPCTR0_OUT DGND Output Counter0 Output—this output is from the general-purpose
counter0 output.
FREQ_OUT DGND Output FrequencyOutput—this output is from the frequency
generatoroutput.
*Indicatesthat the signal is active low
1Notavailable on the 6023E
2Notavailable on the 6023E or 6024E
Table4-2. I/O Connector Signal Descriptions (Continued)
SignalName Reference Direction Description