The Agilent/Keysight E1475A is a C-size VXI expander module that extends RF multiplexing capacity in test systems requiring 75 Ohm signal switching. It provides six independent 1×4 multiplexer channels with 75 Ω characteristic impedance, switching signals up to 1.3 GHz. The module operates as a slave expander and requires a master E1472A or E1474A RF multiplexer. Up to two E1475A expanders can cascade with a master multiplexer, yielding eighteen total 1×4 banks.
Insertion loss remains below 1.0 dB across the full 1.3 GHz bandwidth, with tighter performance at lower frequencies: <0.3 dB to 10 MHz, <0.4 dB to 100 MHz, and <0.8 dB to 500 MHz. Channel-to-channel crosstalk measures <–85 dB to 10 MHz and <–75 dB to 100 MHz. Closed-channel resistance is <1 Ω typical, while insulation resistance exceeds 10⁸ Ω between any two terminals at ≤40 °C and ≤65% RH. Maximum thermal offset is 6 µV.
All connections use SMB male connectors. The module occupies a single C-size VXI slot or can be rack-mounted externally up to 8 meters from the mainframe using remote extender cables, enabling flexible system layouts that minimize test cable length and signal delay.
Technical Specifications
• Module Type: C-size, 1-slot, register-based VXI expander
• Multiplexer Configuration: Six independent 1×4 channels
• Characteristic Impedance: 75 Ω
• Frequency Range: DC to 1.3 GHz
• Connectors: SMB male
• Insertion Loss: <0.3 dB (10 MHz), <0.4 dB (100 MHz), <0.8 dB (500 MHz), <1.0 dB (1.3 GHz)
• Crosstalk: <–85 dB (10 MHz), <–75 dB (100 MHz)
• Closed-Channel Resistance: 10⁸ Ω
• Maximum Thermal Offset: 6 µV
– Key Features
• Six 1×4 multiplexer banks in single VXI slot
• Low insertion loss across full bandwidth
• High channel isolation
• Remote rack-mount capability to 8 meters distance
• Cascade support for expanded channel count
– Typical Applications
• Video signal routing and switching
• Telecommunications test and measurement
• Multi-channel RF signal distribution
• Systems requiring 75 Ω impedance matching
– Compatibility & Integration
• Requires master module: E1472A (50 Ω) or E1474A (75 Ω)
• Supports mixed-impedance topologies with E1473A (50 Ω expander)
• Cascadable with up to two additional expanders per master
• Adjacent or remote slot mounting
