National Instruments PCI-6034E, User Manual

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Chapter 1 DAQ System Overview
E Series User Manual 1-12 ni.com
D GND — — Digital Ground —These pins supply the reference for the
digital signals at the I/O connector as well as the +5 VDC
supply. All three ground references—AI GND, AO GND,
and D GND—are connected on the device.
P0.<0..7> D GND Input or
Output Digital I/O Signals —You can individually configure each
signal as an input or output. P0.6 and P0.7 can also control
the up/down signal of Counters 0 and 1, respectively.
AO EXT REF AO GND Input External Reference —This is the external reference input
for the AO circuitry.
P1.<0..7> D GND Input or
Output NI 6025E only —Port 1 bidirectional digital data lines for
the 82C55A programmable peripheral interface. P1.7 is the
most significant bit (MSB). P1.0 is the least significant bit
(LSB).
P2.<0..7> D GND Input or
Output NI 6025E only —Port 2 bidirectional digital data lines for
the 82C55A programmable peripheral interface. P2.7 is the
MSB. P2.0 is the LSB.
P3.<0..7> D GND Input or
Output NI 6025E only —Port 3 bidirectional digital data lines for
the 82C55A programmable peripheral interface. P3.7 is the
MSB. P3.0 is the LSB.
+5 V D GND Output +5 V Power Source —These pins p5 V power.
AI HOLD COMP D GND Output AI Hold Complete Event Signal —When enabled, this
signal pulses once for each A/D conversion in sampling
mode. The low-to-high edge indicates when the input
signal can be removed from the input or switched to
another signal.
EXT STROBE D GND Output External Strobe Signal —You can toggle this output with
software controls to latch signals or trigger events on
external devices. This functionality is not available in
LabVIEW or NI-DAQ. EXT STROBE is used for
controlling SCXI chassis, and it is not a general-purpose
signal. If you want to use or control this signal, you must
perform register-level programming.
PFI 0/AI START
TRIG D GND Input PFI 0 —As an input, this pin is a programmable function
interface (PFI).
Output AI Start Trigger Signal —As an output, this pin is the
ai/StartTrigger signal. In post-trigger DAQ sequences, a
low-to-high transition indicates the initiation of the
acquisition sequence. In applications with pre-trigger
samples, a low-to-high transition indicates the initiation of
the pre-trigger samples.
Table 1-4. I/O Connector Signal Descriptions (Continued)
Signal Name Reference Direction Description