description Hewlett Packard 34401A Overview
The Hewlett Packard 34401A is a high-precision multimeter used in laboratories and research environments. It provides accurate measurements of voltage, current, and resistance with a 400V range.
It features a 16-digit display and supports data logging and remote control via GPIB. This multimeter is ideal for users requiring high accuracy and advanced functionality.
info Hewlett Packard 34401A Specifications
| Weight | 6.5 lbs (2.95 kg) |
| Display | 6.5-digit LCD with 16-character reading |
| Dimensions | 14.2 x 10.4 x 3.5 inches |
| Interfaces | GPIB (IEEE-488), RS-232 |
| Frequency Range | 3Hz to 300kHz |
| Ac Voltage Range | 100mV to 750V RMS |
| Dc Current Range | 10µA to 3A |
| Dc Voltage Range | 100mV to 1000V |
| Resistance Range | 100 to 100M |
| Measurement Resolution | 100nV (DC voltage) |
balance Hewlett Packard 34401A Pros & Cons
- 6.5-digit precision provides laboratory-grade measurement accuracy for research applications
- True RMS AC measurements accurately capture complex waveforms and non-sinusoidal signals
- Built-in GPIB and RS-232 interfaces enable integration into automated test systems
- Data logging capability with internal memory for standalone monitoring without a computer
- Wide measurement ranges covering voltage, current, resistance, frequency, and period
- HP/Keysight brand reputation ensures reliable performance and global support network
- GPIB interface is outdated; requires adapters for modern USB/Ethernet connectivity
- Larger and heavier than contemporary bench multimeters with larger footprint
- No wireless or smartphone control capabilities limiting modern workflow integration
- Premium pricing positions it above basic digital multimeters for hobbyists
- Limited availability of new units; primarily found on secondary market
help Hewlett Packard 34401A FAQ
What is the basic DC voltage accuracy of the HP 34401A?
The 34401A offers 0.0015% basic DC voltage accuracy with 6.5-digit resolution, making it suitable for calibration laboratories and precision research requiring traceable measurements.
Can the 34401A be connected to a computer without GPIB?
The 34401A includes RS-232 as a secondary interface, but modern computers rarely have serial ports, so a GPIB-to-USB adapter or serial-to-USB converter is typically required for computer control.
Does this multimeter support temperature measurements?
The standard 34401A measures voltage, current, resistance, and frequency; temperature measurement requires the optional 34401A-010 thermocouple measurement capability.
Is the HP 34401A still a relevant choice compared to modern alternatives?
Despite its age, the 34401A remains competitive due to its proven accuracy specifications, robust build quality, and extensive documentation; however, newer Keysight models offer modern connectivity options.
What is Hewlett Packard 34401A?
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What is Hewlett Packard 34401A best for?
Engineers, researchers, and technicians requiring laboratory-grade precision measurements in automated test environments and calibration laboratories.
How does Hewlett Packard 34401A compare to Keysight 34470A Multimeter?
Is Hewlett Packard 34401A worth it in 2026?
What are the key specifications of Hewlett Packard 34401A?
- Weight: 6.5 lbs (2.95 kg)
- Display: 6.5-digit LCD with 16-character reading
- Dimensions: 14.2 x 10.4 x 3.5 inches
- Interfaces: GPIB (IEEE-488), RS-232
- Frequency Range: 3Hz to 300kHz
- AC Voltage Range: 100mV to 750V RMS
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