
NI myRIO-1900 User Guide and Specifications
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© National Instruments
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5
Table 1.
Descriptions of Signals on MXP Connectors A and B
Signal Name
Reference
Direction
Description
+5V
DGND
Output
+5 V power output.
AI <0..3>
AGND
Input
0-5 V, referenced, single-ended analog
input channels. Refer to the
Analog
Input Channels
section for more
information.
AO <0..1>
AGND
Output
0-5 V referenced, single-ended analog
output. Refer to the
Analog Output
Channels
section for more information.
AGND
N/A
N/A
Reference for analog input and output.
+3.3V
DGND
Output
+3.3 V power output.
DIO <0..15>
DGND
Input or
Output
General-purpose digital lines with
3.3 V output, 3.3 V/5 V-compatible
input. Refer to the
DIO Lines
section for
more information.
UART.RX
DGND
Input
UART receive input. UART lines are
electrically identical to DIO lines.
UART.TX
DGND
Output
UART transmit output. UART lines are
electrically identical to DIO lines.
DGND
N/A
N/A
Reference for digital signals, +5 V, and
+3.3 V.