Table 4-1. Analog I/O Connector Pin Assignment For The Pci-4451/4452 - National Instruments PCI-445 Series User Manual

Table 4-1. Analog I/O Connector Pin Assignment for the PCI-4451/4452

Signal Name
+ACH<0..3>
−
ACH<0..3>
AIGND
+DAC0OUT
−
DAC0OUT
+DAC1OUT
−
DAC1OUT
AOGND
+5 V
DGND
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Reference Direction
AIGND Input
AIGND Input
— —
−
DAC0OUT Output
+DAC0OUT Output
−
DAC1OUT Output
+DAC1OUT Output
— —
DGND Output
— —
Description
+Analog Input Channel 0 through 3—The PCI-4451 uses
+ACH<0..1> and the PCI-4452 uses +ACH<0..3>.
−
Analog Input Channel 0 through 3—The PCI-4451 uses
−
ACH<0..1> and the PCI-4452 uses
Analog Input Ground—These pins are the reference point for
single-ended measurements in SE configuration and the bias
current return point for differential measurements. All three
ground references—AIGND, AOGND (PCI-4451 only), and
DGND—are connected together on your PCI-4451/4452, but
each serves a separate purpose.
+Analog Output Channel 0—This pin supplies the analog
non-inverting output channel 0. This pin is available only on
the PCI-4451.
−
Analog Output Channel 0—This pin supplies the analog
inverting output channel 0. This pin is available only on the
PCI-4451.
+Analog Output Channel 1—This pin supplies the analog
non-inverting output channel 1. This pin is only available on
the PCI-4451.
−
Analog Output Channel 1—This pin supplies the analog
inverting output channel 1. This pin is only available on the
PCI-4451.
Analog Output Ground—The analog output voltages are
ultimately referenced to this node. All three ground
references—AIGND, AOGND (PCI-4451 only), and
DGND—are connected together on your PCI-4451/4452, but
each serves a separate purpose.
+5 VDC Source—These pins are fused for up to 1 A and
supply power to the DSA signal conditioning accessories.
The fuse is self resetting.
Digital Ground—This pin supplies the reference for the
+5 VDC supply. All three ground references—AIGND,
AOGND (PCI-4451 only), and DGND—are connected
together on your PCI-4451/4452, but each serves a separate
purpose.
4-3 PCI-4451/4452/4453/4454 User Manual
Chapter 4 Signal Connections
−
ACH<0..3>.