© National Instruments Corporation 1-1 SCXI-1190/1191/1192 User Manual1Installing and Configuring theSCXI-119XThis manual describes the electrical and mechanical characteristics of theSCXI-1190 (quad 1 × 4, 50 Ω, 1.3 GHz bandwidth) and SCXI-1191 (quad1 × 4, 50 Ω, 4 GHz bandwidth) multiplexer modules, and the SCXI-1192(8-channel, SPDT, 50 Ω, 18 GHz bandwidth) relay module for the SCXIbus. It also contains information concerning their installation, operation,and safety instructions.About the SCXI-119XThis section summarizes the features and operation of the SCXI-119Xswitch modules. In addition, refer to Appendix A, Specifications,for detailed specifications of the switch modules.The SCXI-1190/1191 modules are general-purpose, quad 4-channel,high-bandwidth multiplexing switches. The SCXI-1192 module is ageneral-purpose, 8-channel, SPDT, high-bandwidth relay module.The SCXI-119X modules use single-pole double-throw, high-bandwidthrelays capable of switching signals from DC to 1.3 GHz bandwidth(SCXI-1190), from DC to 4 GHz bandwidth (SCXI-1191), and from DC to18 GHz bandwidth (SCXI-1192). The characteristic impedance of thechannels is 50 Ω.For the SCXI-1190, the maximum rated voltage of the switch is 24 V,and the maximum rated current is 1 A at 24 V. For the SCXI-1191, themaximum rated voltage of the switch is 30 V, and the maximum ratedcurrent is 0.33 A at 30 V. For the SCXI-1192, the maximum rated voltageof the switch is 30 V, and the maximum rated current is 2 A at 30 V.See Appendix A, Specifications, for full specifications.