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Signal Name
PFI5/UPDATE*
PFI6/WFTRIG
PFI7/STARTSCAN
PFI8/GPCTR0_SOURCE
PFI9/GPCTR0_GATE
GPCTR0_OUT
FREQ_OUT
AI = Analog Input
AO = Analog Output
Note:
The tolerance on the 50 k pullup and pulldown resistors is very large. Actual value may range between
17 and 100 k .
Analog Input Signal Connections
Warning: Exceeding the differential and common-mode input ranges distorts your
National Instruments Corporation
Table 4-2.
VXI-MIO-64XE-10 I/O Signal Summary (Continued)
Drive
Impedance
Input/
Output
DIO
—
DIO
—
DIO
—
DIO
—
DIO
—
DO
—
DO
—
DIO = Digital Input/Output
DO = Digital Output
The VXI-MIO-64E-1 and VXI-MIO-64XE-10 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
both modules. In single-ended mode, signals connected to
ACH<0..63> are routed to the positive input of both modules. 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.
input signals. Exceeding the maximum input voltage rating can damage
the VXI-MIO Series module and your VXIbus system. National
Instruments is
liable for any damages resulting from such signal
NOT
connections. The maximum input voltage ratings are listed in Tables 4-1
and 4-2 in the Protection column.
Protection
Source
(Volts)
(mA at V)
Power On/Off
5.5 V
3.5 at (4.6 V)
5.5 V
3.5 at (4.6 V)
5.5 V
3.5 at (4.6 V)
5.5 V
3.5 at (4.6 V)
5.5 V
3.5 at (4.6 V)
—
3.5 at (4.6 V)
—
3.5 at (4.6 V)
pu = pullup
4-9
Chapter 4
Signal Connections
Sink
Rise
Bias
(mA at V)
Time
(ns)
5 at 0.4
1.5
50 k pu
5 at 0.4
1.5
50 k pu
5 at 0.4
1.5
50 k pu
5 at 0.4
1.5
50 k pu
5 at 0.4
1.5
50 k pu
5 at 0.4
1.5
50 k pu
5 at 0.4
1.5
50 k pu
VXI-MIO Series User Manual
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