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National Instruments Corporation
15
LFH200 Cable Installation Instructions
SH200LFH-4xDB50F-S Cable
The SH200LFH-4xDB50F-S cable is recommended for connecting the PXI-2575 or SCXI-1175
to your system. One end of the cable terminates with an LFH200 connector. The other end of the
cable terminates with four 50-pin female D-SUB connectors.
When using the SH200LFH-4xDB50F-S cable with the PXI-2575 or SCXI-1175, the positive
and negative leads of a channel form a twisted pair. For example, CH36+ is paired with CH36–,
and CH71+ is paired with CH71–. Figure 8 illustrates how this pairing relates to the pins on the
PXI-2575 or SCXI-1175 modules. Refer to the
NI Switches Help
for a complete listing of
channel names and pinouts.
Figure 8.
Twisted Pair Groupings for the PXI-2575
or SCXI-1175 modules in 95 × 1, 2-Wire Mode
The following tables list the pin assignments for the SH200LFH-4xDB50F-S cable.
NO CONNECT
CH71–
CH71+
CH70–
CH70+
150
151
149
152
148
153
147
154
146
155
51
50
52
49
53
48
54
47
55
46
CH84+
CH84–
CH85+
CH85–
CH86+
CH36+
CH36–
CH37+
CH37–
CH38+
NO CONNECT
CH23–
CH23+
CH22–
CH22+