NI sbRIO-961x/9612XT/963x/9632XT/964x/9642XT
26
ni.com
Integrated Analog Input
Connector J7 provides connections for 32 single-ended analog input
channels or 16 differential analog input channels. Connector J7 also
provides one connection for AI SENSE and nine connections for AI GND.
Refer to the
I/O and Other Connectors on the NI sbRIO Device
section for
a pinout of connector J7.
The integrated analog input of the NI sbRIO device is similar to that of the
NI 9205, but there is no isolation or digital I/O. Figure 17 shows the input
circuitry for one channel.
Figure 17.
Input Circuitry for One Analog Channel
The remainder of this section provides a brief discussion of possible analog
input configurations. For a more in-depth discussion and examples, refer to
the
Analog Input
chapter of the
M Series User Manual
on
ni.com
.
Differential Measurement Configurations
You can use a differential measurement configuration to attain more
accurate measurements and less noise. A differential measurement
configuration requires two inputs for each measurement, thus reducing the
number of available channels to 16. Table 4 shows the signal pairs that are
valid for differential connection configurations.
AI+
AI–
AI GND
ADC
MUX
PGIA
AI
S
EN
S
E
Filtered
Differential
Amplifier
16-bit
ADC
Trigger
Trig
