National Instruments 6024E 用户手册
Chapter 4
Signal Connections
4-4
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Table 4-2 shows the I/O connector signal descriptions for the 6023E,
6024E, and 6025E.
6024E, and 6025E.
Table 4-2. 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 DIFF measurements. All three
ground references—AIGND, AOGND, and DGND—are
connected on your device.
single-ended measurements in RSE configuration and the
bias current return point for DIFF measurements. All three
ground references—AIGND, AOGND, and DGND—are
connected on your device.
ACH<0..15>
AIGND
Input
Analog input channels 0 through 15—you can configure
each channel pair, ACH<i, i+8> (i = 0..7), as either one
DIFF input or two single-ended inputs.
each channel pair, ACH<i, i+8> (i = 0..7), as either one
DIFF 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.
for any of channels ACH <0..15> in NRSE configuration.
DAC0OUT
1
AOGND
Output
Analog channel 0 output—this pin supplies the voltage
output of analog output channel 0.
output of analog output channel 0.
DAC1OUT
1
AOGND
Output
Analog channel 1 output—this pin supplies the voltage
output of analog output channel 1.
output of analog output channel 1.
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 device.
referenced to this node. All three ground
references—AIGND, AOGND, and DGND—are connected
together on your device.
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 on your device.
digital signals at the I/O connector as well as the +5 VDC
supply. All three ground references—AIGND, AOGND,
and DGND—are connected on your device.
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.
signal of general-purpose counters 0 and 1, respectively.
PA<0..7>
2
DGND
Input or
Output
Port A bidirectional digital data lines for the 82C55A
programmable peripheral interface on the 6025E. PA7
is the MSB. PA0 is the LSB.
programmable peripheral interface on the 6025E. PA7
is the MSB. PA0 is the LSB.
PB<0..7>
2
DGND
Input or
Output
Port B bidirectional digital data lines for the 82C55A
programmable peripheral interface on the 6025E. PB7
is the MSB. PB0 is the LSB.
programmable peripheral interface on the 6025E. PB7
is the MSB. PB0 is the LSB.
PC<0..7>
2
DGND
Input or
Output
Port C bidirectional digital data lines for the 82C55A
programmable peripheral interface on the 6025E. PC7
is the MSB. PC0 is the LSB.
programmable peripheral interface on the 6025E. PC7
is the MSB. PC0 is the LSB.
+5 V
DGND
Output
+5 VDC Source—these pins are fused for up to 1 A of
+5 V supply on the PCI and PXI devices, or up to 0.75 A
from a DAQCard device. The fuse is self-resetting.
+5 V supply on the PCI and PXI devices, or up to 0.75 A
from a DAQCard device. The fuse is self-resetting.