NI SCXI-1175
The NI SCXI-1175 is a 196×1 multiplexer relay module for the SCXI platform. The SCXI-1175 is composed of 99 SPST and 1 SPDT armature latching relays.
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Note For EMC compliance, operate this device with shielded cables. |
Operation Modes
The following table lists the supported topologies of the NI SCXI-1175 and possible operation modes.
| Topology | Software Name | Immediate | Scanning |
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| 1-Wire 196×1 Multiplexer | 1175/1-Wire 196x1 Mux (NISWITCH_TOPOLOGY_1175_1_WIRE_196X1_MUX) |
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| 2-Wire 98×1 Multiplexer | 1175/2-Wire 98x1 Mux (NISWITCH_TOPOLOGY_1175_2_WIRE_98X1_MUX) |
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| 2-Wire 95×1 Multiplexer | 1175/2-Wire 95x1 Mux (NISWITCH_TOPOLOGY_1175_2_WIRE_95X1_MUX) |
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Note When using either the SH200LFH-4xDB50F-S or SH200LFH-BARE WIRE cable with the NI SCXI-1175 in the 2-wire 98×1 topology, CH95, CH96, and CH97 will have lower RF performance than the other 95 channels because they are not in twisted pairs in the cable. To avoid using these channels, NI-SWITCH has support for a 2-wire 95×1 topology that does not include CH95, CH96, and CH97. |