Agilent/Keysight 34511B

The Keysight 34511B is a 64-channel relay multiplexer module designed to expand the data acquisition and signal routing capabilities of compatible Keysight mainframes. This low-frequency multiplexer uses armature relays with 2-wire, high and low switching architecture to route DC and AC voltage signals across its full channel complement. The 34511B installs directly into modular slots on Keysight 34970A or 34972A Data Acquisition/Switch Units, providing flexible signal conditioning and measurement automation for test benches and production environments.

– Technical Specifications

• Product Type: Relay Multiplexer Module
• Channels: 64-channel configuration
• Relay Architecture: Armature relay, 2-wire high and low switching
• Signal Types: DC/AC voltage switching
• Frequency Classification: Low-frequency applications
• Module Interface: Proprietary interface/bus for mainframe integration

– Key Features

• Simultaneous operation across up to 64 channels
• Armature relay switching ensures reliability for precision measurement applications
• 2-wire topology simplifies signal routing and reduces wiring complexity
• Direct integration with 34970A and 34972A mainframes via proprietary bus
• Supports both DC and AC voltage measurement and switching tasks

– Compatibility & Integration

The 34511B connects exclusively to Keysight/Agilent data acquisition mainframes—specifically the 34970A and 34972A units—which provide the necessary modular slots, control logic, and communication interfaces. Configuration and data analysis leverage Keysight BenchLink Data Logger software, a spreadsheet-based tool that handles test setup, real-time control, and results visualization. BenchLink operates on Windows platforms (Vista, 7, 8, XP SP3) with minimum Pentium III 500 MHz processors and 128 MB RAM; Pentium 4 at 800 MHz with 256 MB RAM is recommended. All remote communication—GPIB, RS-232, LAN, USB—routes through the host mainframe.