National Instruments PXI-7811 User Manual page 57

Caution Connections that exceed any of the maximum ratings of input or output signals
on the NI 78xxR can damage the NI 78xxR and the computer. Maximum input ratings for
each signal are in the Protection column of Table A-2. NI is not liable for any damage
resulting from such signal connections
Signal
Type and
Signal Name Direction
+5V DO
Analog Signals (NI 783xR/784xR/785xR Only)
AI<0..7>+ AI
AI<0..7>– AI
AIGND AO
AISENSE AI
AO<0..7> AO
AOGND AO
Digital Signals (All NI 78xxR Devices)
DIO<0..39> DIO
Connector <0..3>
(NI 781xR)
DIO<0..15>
Connector 0
(NI 783xR,
NI 784xR, and
NI 785xR)
DIO<0..39>
Connector <1..2>
(NI 783xR,
NI 784xR, and
NI 785xR)
AI = Analog Input AO = Analog Output
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Table A-2. NI 78xxR I/O Signal Summary
Impedance Protection
Input/ (Volts) Source
Output On/Off (mA at V)
— —
10 GΩ in 42/35
parallel with
100 pF
10 GΩ in 42/35
parallel with
100 pF
— —
10 GΩ in 42/35
parallel with
100 pF
1.25 Ω
Short 2.5 at 10
circuit to
ground
— —
— –0.5 to +7.0 4.0 at 2.4
(NI 783xR)
–20 to 20
(NI 784xR/
NI 785xR)
DIO = Digital Input/Output
A-5
Appendix A Connecting I/O Signals
Sink
(mA at V) Rise Time
— — —
— — —
— — —
— — —
— — —
2.5 at –10 10 V/μs
— — —
— — —
4.0 at 0.4 —
DO = Digital Output
R Series Multifunction RIO User Manual
Bias
—
±2 nA
±2 nA
—
±2 nA
—
—
—
—