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NI myRIO-1950 User Guide and Specifications
Analog Input Channels
The NI myRIO-1950 has analog input channels on myRIO Expansion Port (MXP) connectors A
and B. The analog inputs are multiplexed to a single analog-to-digital converter (ADC) that
samples all channels.
MXP connectors A and B have four single-ended analog input channels per connector, AI0-AI3,
which you can use to measure 0-5 V signals.
Note
For important information about improving measurement accuracy by
reducing noise, go to
ni.com/info
and enter the Info Code
analogwiring
.
Figure 4 shows the analog input topology of the NI myRIO-1950.
Figure 4.
NI myRIO-1950 Analog Input Topology
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.
Table 1.
Descriptions of Signals on MXP Connectors A and B (Continued)
Signal Name
Reference
Direction
Description
MUX
ADC
AI0
AI1
AI2
AI
3
AI0
AI1
AI2
AI
3
0–5 V
MXP A
MXP B
