Chapter 4
Signal Connections
©
National Instruments Corporation
4-11
PCI-MIO E Series User Manual
Analog Input Signal Connections
The analog input signals for the PCI-MIO E Series boards are
ACH<0..15>, AISENSE, and AIGND. The ACH<0..15> signals are
tied to the 16 analog input channels of your PCI-MIO E Series board. In
single-ended mode, signals connected to ACH<0..15> are routed to the
positive input of the board 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.
Warning: Exceeding the differential and common-mode input ranges distorts your
input signals. Exceeding the maximum input voltage rating can damage
the PCI-MIO E Series board and the computer. National Instruments is
NOT
liable for any damages resulting from such signal connections. The
maximum input voltage ratings are listed in the Protection column of
Tables 4-1 to 4-3.
In NRSE mode, the AISENSE signal is connected internally to the
negative input of the PCI-MIO E Series board PGIA when their
corresponding channels are selected. In DIFF and RSE modes, this
signal is left unconnected.
AIGND is an analog input common signal that is routed directly to the
ground tie point on the PCI-MIO E Series boards. You can use this
signal for a general analog ground tie point to your PCI-MIO E Series
board if necessary.
Connection of analog input signals to your PCI-MIO E Series board
depends on the configuration of the analog input channels you are using
and the type of input signal source. With the different configurations,
you can use the PGIA in different ways. Figure 4-2 shows a diagram of
your PCI-MIO E Series board PGIA.
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