Chapter 4 Signal Connections
AT-MIO/AI E Series User Manual 4-16
National Instruments Corporation
Analog Input Signal Connections
♦AT-MIO-16E-1, ΑΤ-MIO-16E-2, AT-MIO-16E-10,
AT-MIO-16DE-10, AT-MIO-16XE-10, AT-AI-16XE-10,
AT-MIO-16XE-50
The analog input signals are ACH<0..15>, AISENSE, and AIGND.
The ACH<0..15> signals are tied to the 16 analog input channels of
your AT 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.
♦ ΑΤ-MIO-64E-3
The analog input signals are ACH<0..63>, AISENSE, AISENSE2,
and AIGND. The ACH<0..63> signals are tied to the 64 analog
input channels of the AT-MIO-64E-3. In single-ended mode,
signals connected to ACH<0..63> are routed to the positive input
of the AT-MIO-64E-3 PGIA. In differential mode, signals
connected to ACH<0..7, 16..23, 32..39, 48..55> are routed to the
positive input of the PGIA, and signals connected to ACH<8..15,
24..31, 40..47, 56..63> 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 AT E Series board and the PC. National Instruments is NOT liable for
any damages resulting from such signal connections. The maximum input
voltage ratings are listed in Tables 4-1 through 4-4 in the Protection
column.
In NRSE mode, the AISENSE and AISENSE2 signals are connected
internally to the negative input of the AT E Series board PGIA when
their corresponding channels are selected. In DIFF and RSE modes,
these signals are left unconnected.
AIGND is an analog input common signal that is routed directly to the
ground tie point on the AT E Series boards. You can use this signal for
a general analog ground tie point to your AT E Series board if
necessary.
Connection of analog input signals to your AT 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