Advantest R8340A Ultra High Resistance Meter

The Advantest R8340A Ultra-High Resistance Meter is a precision instrument for measuring extremely high resistance values and micro currents across 16 decades. It combines an input amplifier gain-switching I-V converter, high-speed sampling A/D converter, and low-noise voltage generation to enable sensitive detection of ion currents, leakage currents, and insulation material characterization. The meter measures resistance from 10 Ω to 3 × 10¹⁶ Ω and current from 10 fA to 19.999 mA, with sampling rates up to 100 samples per second.

Technical Specifications

• Resistance: 10 Ω to 3 × 10¹⁶ Ω


• Current: 10 fA to 19.999 mA Voltage Source


• DC supply: 0.000 V to 1000.0 V continuously variable


• Floating measurement capability: Up to 1100 VDC


• Voltage generator: 5 mVp-p noise @ 1000 V, 3 ms rise time (0 to 1000 V), 10 W class


• Source/sink capability with selectable current limits Measurement Performance


• Sampling rate: Up to 100 samples per second


• Input amplifier gain switching for adjustable measurement speed and accuracy


• Automatic range level selection: 20000, 2000, or 200 (UP mode); 1799, 179, or 17 (DOWN mode) Data Storage & Output


• Memory capacity: 1000 data items


• Sequence program function with stored measurement conditions


• GPIB interface (IEEE 488-1978) with packed format output support


• BCD output format


• D/A output: ±1 V with ±50% offset adjustment

Key Features

• Programmable measurement sequences including JIS C5102 procedures


• Contact check function via capacitance measurement


• Rapid sample charging and discharging with source/sink capability


• Low-noise, high-response voltage generation


• Configurable input resistance and integration time

Typical Applications

• Insulation material characterization


• Switch and connector testing


• Capacitor evaluation


• Ion current and leakage current detection


• Quality control and production testing


• Research and development

Compatibility & Integration

• Handler interface for external devices and automated fixtures


• GPIB connectivity for test system integration and production line automation


• Incoming inspection and high-volume testing support via packed data format output