Chapter 3
Connecting the Signals
DAQPad-MIO-16XE-50 User Manual
3-8
ni.com
Analog Input Signal Connections
The AI signals are ACH<0..15>, AISENSE, and AIGND. The
ACH<0..15> signals are tied to the 16 AI channels of the
DAQPad-MIO-16XE-50. In single-ended mode, signals connected
to ACH<0..15> are routed to the positive input of the device PGIA.
In differential mode, signals connected to ACH<0..7> are routed to the
positive input of the PGIA, and signals connected to ACH<8..15> are
routed to the negative input of the PGIA.
Caution
Exceeding the differential and common-mode input ranges distorts input signals.
Exceeding the maximum input voltage rating can damage the DAQPad-MIO-16XE-50 and
the PC. NI is
not
liable for any damage resulting from such signal connections.
In NRSE mode, the AISENSE signal is connected internally to the negative
input of the DAQPad-MIO-16XE-50 PGIA. In DIFF and RSE modes, this
signal is left unconnected.
AIGND is an AI common signal that is routed directly to the ground tie
point on the DAQPad-MIO-16XE-50. You can use this signal for a general
analog ground tie point to the DAQPad-MIO-16XE-50 if necessary.
Connection of AI signals to the DAQPad-MIO-16XE-50 depends on the
configuration of the AI channels you are using and the type of input signal
source. With the different configurations, you can use the PGIA in different
ways. Figure 3-2 shows a diagram of the DAQPad-MIO-16XE-50 PGIA.
