Agilent/Keysight 3437A

The Agilent/Keysight 3437A is a microprocessor-controlled system voltmeter designed for automated testing and high-speed data acquisition. This 3½ digit instrument samples voltages at rates up to 5700 samples per second with three selectable ranges (0.1 V, 1 V, and 10 V full scale), each supporting 100% overrange. Chassis-isolated input terminals enable floating measurements up to ±20 V, while wideband input amplification, auto-zero, auto-polarity, and sample-and-hold functionality ensure accurate instantaneous readings across DC to 1.0 MHz.

Technical Specifications

• Resolution: 3½ digit display


• Voltage ranges: 0.1 V, 1 V, 10 V full scale with 100% overrange on all ranges


• Sampling rate: Up to 5700 samples per second (packed data format)


• Floating measurement capability: ±20 V (chassis isolated)


• Frequency range: DC to 1.0 MHz


• Input impedance: 1 MΩ (10 V range); >10⁸ Ω (1 V and 0.1 V ranges); all 50 ms)

Key Features

• HP-IB (Hewlett-Packard Interface Bus) control - all front panel functions programmable


• Dual data output formats: ASCII (8 byte) or Packed (2 byte)


• Binary program mode for abbreviated code entry


• Sample-and-hold for instantaneous voltage capture


• Wideband input amplifier with auto-zero and auto-polarity

Typical Applications

• Automated high-speed voltage measurement and logging


• Burst sampling and transient analysis


• Precision DC and waveform monitoring up to 1.0 MHz


• System integration via HP-IB instrumentation control

Compatibility & Integration HP-IB interface provides direct integration into automated test systems and data acquisition setups. Programmable triggering and selectable data formats support flexible test sequences and real-time system communication.