Keysight (Agilent)
Keysight (Agilent) 4338A
Milliohmmeter
Resistance (R), Inductance (L), DC Resistance Measurement Function
1 kHz Test Frequency
1 mΩ to 100 kΩ Measurement Range
0.1% Basic Accuracy
1 mA rms (constant current) Test Signal Level

| Attribute | Value |
|---|---|
| Measurement Function | Resistance (R), Inductance (L), DC Resistance |
| Test Frequency | 1 kHz |
| Measurement Range | 1 mΩ to 100 kΩ |
| Basic Accuracy | 0.1% |
| Test Signal Level | 1 mA rms (constant current) |
| Measurement Speed | Up to 27 measurements per second (fast mode) |
| Interface | GPIB (IEEE-488) |
| Display | 4.5-digit LCD display |
| Power Requirements | 100/120/220/240 VAC, 50/60 Hz |
| Operating Temperature | 0°C to 55°C (32°F to 131°F) |
Keysight Technologies 4338A Options:
- 4338A - 009 - Delete Operation Manual
- 4338A - W30 - Extended Repair Service
| Model | 4338A |
|---|
The Keysight (Agilent) 4338A Digital Milliohmmeter is a precision instrument designed for accurate, low-resistance measurements across a broad range. It supports auto/manual ranging with a 1 kHz test frequency and selectable signal levels from 1 µA to 10 mA rms. Limiting voltage to 20 mV peak across samples, it offers wide measurement ranges: resistance and impedance from 10 µΩ to 100 kΩ, inductance from 10 nH to 10 H, and phase from -180° to +180°. It measures R, L, X, |Z|, Ø, R-X, R-L, and |Z|-Ø. Featuring HP-IB and handler interfaces, it operates on 90–132/198–264 Vac at 47–66 Hz, and weighs 10 lb.
Ideal for low-resistance characterization of electromechanical components, the 4338A ensures high-speed, accurate testing in R&D, production, or QA environments.
Testwall can supply the used Keysight (Agilent) 4338A, fully tested. With expert support and global delivery, Testwall ensures high-performance instrumentation with unmatched reliability and service quality. Please contact us directly if you need calibration or repair of the Keysight (Agilent) 4338A.





