Chapter 4
Signal Connections
©
National Instruments Corporation
4-3
PCI-MIO E Series User Manual
I/O Connector Signal Descriptions
Signal Name
Reference
Direction
Description
AIGND
—
—
Analog Input Ground—These pins are the reference point
for single-ended measurements in RSE configuration and
the bias current return point for differential measurements.
All three ground references—AIGND, AOGND, and
DGND—are connected together on your PCI-MIO E Series
board.
ACH<0..15>
AIGND
Input
Analog Input Channels 0 through 15—Each channel pair,
ACH<i, i+8> (i = 0..7), can be configured as either one
differential input or two single-ended inputs.
AISENSE
AIGND
Input
Analog Input Sense—This pin serves as the reference node
for any of channels ACH <0..15> in NRSE configuration.
DAC0OUT
AOGND
Output
Analog Channel 0 Output—This pin supplies the voltage
output of analog output channel 0.
DAC1OUT
AOGND
Output
Analog Channel 1 Output—This pin supplies the voltage
output of analog output channel 1.
EXTREF
1
A0GND
Input
External Reference—This is the external reference input for
the analog output circuitry. This pin is not available on the
PCI-MIO-16XE-10 or PCI-MIO-16XE-50.
AOGND
—
—
Analog Output Ground—The analog output voltages are
referenced to this node. All three ground references—
AIGND, AOGND, and DGND—are connected together on
your PCI-MIO E Series board.
DGND
—
—
Digital Ground—This pin supplies the reference for the
digital signals at the I/O connector as well as the +5 VDC
supply. All three ground references—AIGND, AOGND,
and DGND—are connected together on your PCI-MIO E
Series board.
DIO<0..7>
DGND
Input or
Output
Digital I/O signals—DIO6 and 7 can control the up/down
signal of general-purpose counters 0 and 1, respectively.
+5 V
DGND
Output
+5 VDC Source—These pins are fused for up to 1 A of
+5 V supply. The fuse is self-resetting.
SCANCLK
DGND
Output
Scan Clock—This pin pulses once for each A/D conversion
in the scanning modes when enabled. The low-to-high edge
indicates when the input signal can be removed from the
input or switched to another signal.
