National Instruments NI PXI-7831R User Manual page 59

Appendix B Connecting I/O Signals
NI PXI-7831R User Manual
The NSC68-262650 cable is designed to connect the signals on the
NI PXI-7831R MIO connector directly to 5B and SSR backplanes. This
cable has a 68-pin male VHDCI connector on one end that plugs into the
NI PXI-7831R MIO 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 PXI-7831R analog input
signals. This connector can be plugged directly into a 5B backplane for
analog input signal conditioning. The NI PXI-7831R AI channels <0..7>
are mapped to the 5B backplane channels <0..7> in sequential order. The
AI channels should be configured to use the NRSE input mode when using
5B signal conditioning.
The other 26-pin header contains all the NI PXI-7831R analog output
signals. This connector can be plugged directly into a 5B backplane for AO
signal conditioning. The NI PXI-7831R AO channels <0..7> are mapped to
the 5B backplane channels <0..7> in sequential order.
The 50-pin header contains the 16 DIO lines available on the
NI PXI-7831R MIO connector. This header can be plugged directly into an
SSR backplane for digital signal conditioning. DIO lines <0..15> are
mapped 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, but since the NI PXI-7831R only
provides 8 AI channels, you only have access to the first 8 channels in 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 that does not equal the 16 DIO lines
available on the 50-pin header. In this case, you only have access to the
channels that exist on both the SSR backplane and the NSC68-262650
cable 50-pin header.
Figure B-3 shows the connector pinouts when using the NSC68-262650
cable.
B-6 ni.com