Agilent / Keysight E1474A Six 1 x 4, 75 Ohm RF Multiplexer

The Keysight E1474A is a VXI C-size, register-based RF multiplexer module that routes and switches signals across six independent 1×4 multiplexer banks. Each bank operates with 75 Ohm characteristic impedance and handles signals up to 1.3 GHz, making it suitable for video, telecommunications, and general RF applications. Non-latching armature relays enable tree-switched configuration for high isolation and low VSWR performance.

– Technical Specifications

• Module Type: VXI C-size, 1-slot, register-based
• Multiplexer Configuration: Six independent 1×4 banks (Bank 0–5); one channel per bank connects to its common terminal at any time
• Impedance: 75 Ohm characteristic
• Frequency Range: DC to 1.3 GHz
• Relay Type: Non-latching armature relays
• Maximum Voltage: 42 V peak (center or shield-to-center, shield or chassis)
• Maximum Current: 1 A DC or AC rms per channel or common
• Maximum Power: 24 W DC or 24 VA AC per channel or common
• Closed Channel Resistance (typical): <1 Ohm initial
• Maximum Thermal Offset: 6 µV

– Key Features

• Insertion Loss: <0.3 dB at <10 MHz; <0.4 dB at <100 MHz; <0.8 dB at <500 MHz; <1.0 dB at ~1.3 GHz
• VSWR: ≤1.05 at <10 MHz; ≤1.15 at <100 MHz; ≤1.35 at <500 MHz; up to ~1.5 near 1.3 GHz
• Crosstalk (Channel-to-Channel): <–85 dB at <10 MHz; <–75 dB at <100 MHz; <–60 dB at <500 MHz
• RF Connectors: SMB male on front panel
• Control: SCPI command programming with logical addressing via address switches
• Power-On/Reset State: Channels 00, 10, 20, 30, 40, 50 connected to respective common terminals; all other channels open
• Expansion: Supports E1475A (75Ω) and E1473A (50Ω) expander modules; capable of controlling external relays requiring 5V, 12V, or 24V drive

– Typical Applications

Video and telecommunications signal routing; RF test and measurement; multi-channel signal switching in laboratory and production environments.

– Compatibility & Integration

VXIbus-compatible with HP 75000 Series C systems. Functionally identical to the E1472A except for output impedance specification.