- NATIONAL INSTRUMENTS Reconfigurable I/O User Manual NI PXI-7831R

Appendix B Connecting I/O Signals
© National Instruments Corporation B-5 NI PXI-7831R User Manual
Connecting to 5B and SSR Signal Conditioning
NI provides cables that allow you to connect signals from the
NI PXI-7831R directly to 5B backplanes for analog signal conditioning
and SSR backplanes for digital signal conditioning.
Table B-2. NI PXI-7831R I/O Signal Summary
Signal Name
Driver
Type
Signal
Type and
Direction
Impedance
Input/
Output
Protection
(Volts)
On/Off
Source
(mA at V)
Sink
(mA at V)
Rise
Time
Bias
+5V — DO — — — — — —
AI<0..7>+ — AI 10 GΩ in
parallel
with
100 pF
42/35 — — — ±2 nA
AI<0..7>– — AI 10 GΩ in
parallel
with
100 pF
42/35 — — — ±2 nA
AIGND — AO — — — — — —
AISENSE — AI 10 GΩ in
parallel
with
100 pF
42/35 — — — ±2 nA
AO<0..7> — AO 1.25 Ω Short-
circuit to
ground
5 at 10 5 at –10 10 V/µs —
AOGND — AO — — — — — —
DGND — DO — — — — — —
DIO<0..15>
Connector 0
DIO<0..39>
Connector<1..2>
Default DIO — –0.5
to +7.0
5.4 at 2.4 5.0 at 0.4 12 ns —
Slow DIO — –0.5
to +7.0
1.9 at 0.4 1.9 at 0.4 75 ns —
Fast DIO — –0.5
to +7.0
16 at 2.4 14 at 0.4 6ns —
AI = Analog Input AO = Analog Output DIO = Digital Input/Output DO = Digital Output