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Appendix A
Connecting I/O Signals
Connecting to 5B and SSR Analog Signal Conditioning
(NI 783xR/784xR/785xR Only)
R Series Intelligent DAQ User Manual
NI provides cables that allow you to connect signals from the
NI 783xR/784xR/785xR directly to 5B backplanes for analog signal
conditioning and SSR backplanes for digital signal conditioning.
The NSC68-262650 cable connects the signals on the
NI 783xR/784xR/785xR RMIO connector directly to 5B and SSR
backplanes. This cable has a 68-pin male VHDCI connector on one end that
plugs into the NI 783xR/784xR/785xR RMIO connector. The other end of
this cable provides two 26-pin female headers plus one 50-pin female
header.
One of the 26-pin headers contains all the NI 783xR/784xR/785xR analog
input signals. You can plug this connector directly into a 5B backplane for
analog input signal conditioning. The NI 783xR/784xR/785xR AI<0..n>
correspond to the 5B backplane channels <0..n> in sequential order.
Configure the AI channels to use the NRSE input mode when using
5B signal conditioning.
The other 26-pin header contains all the NI 783xR/784xR/785xR analog
output signals. You can plug this connector directly into a 5B backplane
for AO signal conditioning. The NI 783xR/784xR/785xR AO<0..n>
correspond to the 5B backplane channels <0..n> in sequential order.
The 50-pin header contains the 16 DIO lines available on the
NI 783xR/784xR/785xR RMIO connector. You can plug this header
directly into an SSR backplane for digital signal conditioning. DIO lines
<0..15> correspond to the 5B backplane Slots <0..15> in sequential order.
The 5B connector pinouts are compatible with 8-channel 5B08 backplanes
and 16-channel 5B01 backplanes. The NI 7830R can accept analog
input from the first four channels of a 16-channel backplane.
The NI 7831R/7833R/784xR/785xR can accept analog input from the
first eight channels of a 16-channel backplane. The SSR connector pinout
is compatible with 8-, 16-, 24-, and 32-channel SSR backplanes. You can
connect to an SSR backplane containing a number of channels unequal to
the 16 DIO lines available on the 50-pin header. In this case, you have
access to only the channels that exist on both the SSR backplane and the
NSC68-262650 cable 50-pin header.
A-6
ni.com
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