HP / Agilent 4349B 4 Channel High Resistance Meter, DC

The HP/Agilent 4349B is a 4-channel high resistance meter engineered for simultaneous DC resistance measurements across multiple devices under test. Built for high-volume production environments, it delivers resistance characterization from 10 kΩ to 1.0 × 10¹⁵ Ω with 2% basic accuracy and selectable display resolution of 3, 4, or 5 digits. Measurement cycles complete in 9.5 ms, 28 ms, 98 ms, or 397 ms, enabling rapid throughput in automated test sequences.

Technical Specifications

• Resistance Range: 10 kΩ to 1.0 × 10¹⁵ Ω


• Current Range: 1 pA to 10 µA


• Basic Accuracy: ±2%


• Measurement Times: 9.5 ms, 28 ms, 98 ms, or 397 ms


• Input Terminal Voltage Rating: ±50 V dc


• Maximum Test Voltage (external source): 1000 V dc


• Input/Output Resistance: 1 kΩ


• Display Resolution: 3, 4, or 5 digits (selectable)


• Power Input: 90–132 V ac or 198–264 V ac; 47–66 Hz


• Power Consumption: 45 VA typical


• Operating Temperature: 0 °C to 45 °C


• Operating Humidity: ≤95% RH at 40 °C


• Dimensions: 320 mm (W) × 100 mm (H) × 450 mm (D)


• Weight: 6.5 kg typical

Key Features

• Simultaneous 4-channel measurement capability for parallel device testing


• Auto and manual ranging for resistance measurements


• Contact check verification (2 ms) for fixture and lead continuity


• Open error correction for leakage current and capacitance compensation


• Comparator function with High/In/Low pass/fail criteria


• Programmable test sequence execution including charge-measure-discharge cycles


• Save/recall of up to 10 measurement setups


• External DC power source required; recommended supply specifications include ≤1 mV rms ripple (50/60 Hz), ≤5 µV rms/Hz wideband noise (50 Hz), and ≤50 mV rms switching noise (100 kHz)

Typical Applications Quality assurance in capacitor manufacturing, component characterization in R&D, and leakage current assessment in electronics production. High-speed parallel testing accelerates throughput in high-volume operations.

Compatibility & Integration HP-IB (IEEE 488) interface for remote instrument control and data transfer. Handler interface supports negative logic with isolated signals for High/In/Low, No Contact, EOM, Index, Alarm, Keylock, and external trigger.