National Instruments AT-MIO-64F-5, User Manual

Page: 36 / 266

Configuration and Installation Chapter 2
AT-MIO-64F-5 User Manual 2-14 © National Instruments Corporation
MIO Subconnector Signal Connection Descriptions
Pin Signal Name Reference Description
1-2 AI GND N/A Analog Input Ground Ð These pins are the
reference point for single-ended
measurements and the bias current return
point for differential measurements.
3-18 ACH<0..15> AI GND Analog Input Channels 0 through 15 Ð In
the DIFF mode, the input is configured for
up to 32 channels, with ACH<0..15>
representing differential channels 0
through 7. In the RSE and NRSE modes,
the input is configured for up to 64
channels, with ACH<0..15> as channels 0
through 15. ACH<0..15> represents the
first eight channels in the differential
configuration, and the first 16 channels in
the single-ended configuration.
19 AI SENSE AI GND Analog Input Sense Ð This pin serves as
the reference node when the board is in
NRSE configuration. If desired, this
signal can be programmed to be driven by
the board analog input ground in the DIFF
and RSE analog input modes.
20 DAC0 OUT AO GND Analog Channel 0 Output Ð This pin
supplies the voltage output of analog
output channel 0.
21 DAC1 OUT AO GND Analog Channel 1 Output Ð This pin
supplies the voltage output of analog
output channel 1.
22 EXTREF AO GND External Reference Ð This is the external
reference input for the analog output
circuitry.
23 AO GND N/A Analog Output Ground Ð The analog
output voltages are referenced to this node.
24, 33 DIG GND N/A Digital Ground Ð This pin supplies the
reference for the digital signals at the I/O
connector as well as the +5 VDC supply.
25, 27, 29, 31 ADIO<0..3> DIG GND Digital I/O port A signals.