Agilent/Keysight E1366A

The Agilent/Keysight E1366A is a B-size, 1-slot VXI RF multiplexer module designed for high-density signal routing in automated test systems. It provides dual independent 1×4 switching banks, each with one-wire multiplexer topology and non-latching armature relays. The module switches RF signals up to 1.3 GHz to various test instruments—oscilloscopes, spectrum analyzers, network analyzers, and distortion analyzers—with tree-switched relay architecture ensuring high isolation and low VSWR. Each bank routes four channels to a common terminal; only one channel per bank conducts at any given time. All off-channels terminate in 50 Ohm loads (removable). Register-based control via SCPI commands enables efficient sequential channel scanning. The E1366A is functionally equivalent to the E1367A, differing only in characteristic impedance (50 Ohm versus 75 Ohm).

– Technical Specifications

• Form Factor: B-size, 1-slot VXI module
• Channel Configuration: Dual 1×4 multiplexer banks (Bank 0: channels 00–03; Bank 1: channels 10–13)
• Characteristic Impedance: 50 Ohms
• Signal Bandwidth: Up to 1.3 GHz
• Relay Type: Non-latching armature per channel
• Connectors: BNC on front panel
• Termination: 50 Ohm on off-channels (removable)
• Control Interface: SCPI commands, register-based
• Maximum Voltage: 42 V (center/shield-to-center, shield, or chassis)
• Maximum Current: 1 A DC or 1 A AC rms per channel/common
• Maximum Power: 24 W DC or 24 VA AC per channel/common
• Closed Channel Resistance: 0.18 Ω at +24 V; 0.01 Ω at −24 V (typical)
• Maximum Thermal Offset: 6 µV
• Power Dissipation: 3.00 W/slot; 0.05 mm H₂O pressure drop; 0.25 liter/s airflow

– Key Features

• Tree-switched relay configuration minimizes crosstalk and VSWR
• All channels open to 50 Ohm termination on power-on or reset
• Simultaneous independent switching of two multiplexer banks
• Low closed-channel resistance for minimal signal loss

– Typical Applications

• RF signal distribution in high-throughput test environments
• Automated switching between multiple test instruments
• Multi-channel signal routing for component and system characterization

– Compatibility & Integration

• Operates within VXIbus and VMEbus mainframe architectures
• Integrates with existing SCPI-controlled test systems