The Keysight E8460A is a C-size VXI multiplexer module delivering 256 channels of fast reed relay switching for automated test systems. Register-based control enables flexible reconfiguration across two-wire, three-wire, and four-wire measurement topologies. With a maximum switching time of 0.5 ms and contact protection, the module supports high-density scanning applications requiring rapid channel selection and precise signal routing.
Technical Specifications
Module Architecture
• VXI module, C-size, 1-slot form factor
• 256 channels, reed relay switches
• Register-based programmable control
• Maximum open/close time: 0.5 ms
• Contact protection included
Switching Configurations
The module reconfigures into multiple topologies: one 256 × 1, four 64 × 1, one 128 × 2, two 32 × 4, one 64 × 3, or sixteen 16 × 1 matrices.
Electrical Ratings
• Maximum DC voltage: 200 V or 60 V (terminal-dependent)
• Maximum AC voltage: 140 V, 50 V, or 30 V RMS (terminal-dependent)
• Maximum AC peak voltage: 200 V, 70.7 V, or 42 V (terminal-dependent)
• Maximum switching current per channel: 300 mA or 100 mA (terminal-dependent)
• Maximum power per channel (resistive load): 5 VA
Attenuation Performance
Frequency-dependent attenuation varies by topology. Representative 256 × 1 values: –84 dB, –64 dB, –44 dB, –30 dB. Configuration-specific performance available for 64 × 1 and 16 × 1 topologies.
– Key Features
• Fast reed relay switching enables high-speed scanning and rapid topology reconfiguration
• High-density channel count supports complex signal routing in compact footprint
• Multi-wire measurement support accommodates resistance, RTD, and precision analog applications
• Protected contacts extend relay lifetime under switching loads
– Typical Applications
Automated test systems requiring multi-channel signal routing, resistance and temperature measurement scanning, parametric device testing, and signal conditioning in precision measurement environments.
– Compatibility & Integration
The module accepts HP E8460-80012 (Crimp and Insert), E8460-80014 (QUIC Fault Tolerant), and E8460-80015 (QUIC IDC Ribbon Cable) terminal blocks. Includes one 2.5-inch analog bus cable (E1400-61605) for daisy-chain connection to adjacent modules or E1411B multimeter integration. Weight: 5 lbs.
