# Keysight 3458A 8.5 Digit High-Performance Digital Multimeter # Keysight 3458A 8.5 Digit High-Performance Digital Multimeter ## Key Features At A Glance - 8.5-digit resolution with 0.6 ppm 24-hour DC voltage accuracy for transfer and calibration-standard measurements - Up to 100,000 readings/sec at 4.5 digits and 6 readings/sec at 8.5 digits across DCV, ohms, and digitizing modes - Seven measurement functions standard: DCV, ACV, DCI, ACI, two-wire and four-wire ohms, frequency, and period - True RMS AC volts with selectable synchronous sub-sampling, analog, or random sampling techniques covering 1 Hz to 10 MHz - Integrated digitizing with 16-bit resolution to 100,000 samples/sec, 12 MHz bandwidth, and 10 ns timebase resolution - Two-source (10 V, 10 kΩ) electronic calibration plus self-verifying ACAL auto-calibration for all functions including AC - 8 ppm/year voltage reference stability standard, with optional 4 ppm/year high-stability reference (Option 002) - GPIB (IEEE-488) interface with optional extended reading memory expanding internal storage to 148 k bytes (Option 001) The Keysight 3458A Multimeter is a high-performance 8.5-digit system multimeter engineered to deliver both high speed and high accuracy in a single instrument. Originally introduced under the Hewlett-Packard banner and carried forward through Agilent into the current Keysight lineup, the 3458A has long served as a reference-class bench and system DMM for production test, R&D, and calibration laboratory environments. The datasheet positions it as a multimeter that shatters performance barriers of speed and accuracy, combining seven measurement functions with digitizing capability in one chassis. Per the datasheet, the 3458A is applied to test system throughput acceleration, calibration laboratory precision work, and high-resolution waveform digitizing. The instrument is positioned for production test floors where measurement speed and tight test margins drive yield, for calibration labs where 0.1 ppm transfer accuracy and low internal noise are required, and for engineering benches that need digitizing of repetitive or single-shot waveforms alongside conventional DMM measurements. Typical work described includes transfer measurements against intrinsic standards, automated characterization sweeps under GPIB control, and stand-alone measurement sequences executed from non-volatile program memory. ValueTronics International has been a trusted source for new and pre-owned test and measurement equipment since 1992. Every instrument in our inventory is stored and processed in our 20,000 square foot secure warehouse at 1675 Cambridge Drive, Elgin, Illinois, where our in-house technicians perform the receiving, inspection, and functional verification work that distinguishes a professionally graded instrument from an unverified marketplace listing. When you order a 3458A from ValueTronics, you are working with a vendor that has the instrument in physical inventory, has tested it, and stands behind it — not a drop-shipper or pass-through broker. ## Brand Heritage The 3458A originated as a Hewlett-Packard product. In 1999, HP spun out its test and measurement business as Agilent Technologies, and in 2014 Agilent transferred its electronic measurement division to Keysight Technologies. Instruments built under the HP and Agilent labels share the same 3458A model designation and full support continuity through Keysight today. ## Accessories Supplied - 34137A Test lead set for 3458A - Calibration certificate ## Product Core & Specifications Specification Value DC Voltage Ranges 100 mV, 1 V, 10 V, 100 V, 1000 V (5 ranges) Maximum Resolution 10 nV (100 mV and 1 V ranges) Input Impedance \>10 GΩ (100 mV, 1 V, 10 V); 10 MΩ ±1% (100 V, 1000 V) 24 Hour Accuracy (10 V range) 0.5 ppm of reading + 0.05 ppm of range 90 Day Accuracy (10 V range) 4.1 ppm + 0.05 ppm 1 Year Accuracy (10 V range) 8 (4) ppm + 0.05 ppm 2 Year Accuracy (10 V range) 14 (10) ppm + 0.05 ppm Maximum Sensitivity 10 nV Resistance (2-wire and 4-wire) Ranges 10 Ω, 100 Ω, 1 kΩ, 10 kΩ, 100 kΩ, 1 MΩ, 10 MΩ, 100 MΩ, 1 GΩ (9 ranges) Maximum Resolution 10 µΩ (10 Ω range) 24 Hour Accuracy (1 kΩ range) 2 ppm + 0.2 ppm Offset Compensation Available on 10 Ω to 100 kΩ ranges DC Current Ranges 100 nA, 1 µA, 10 µA, 100 µA, 1 mA, 10 mA, 100 mA, 1 A (8 ranges) Maximum Resolution 1 pA 24 Hour Accuracy (1 mA range) 10 ppm + 4 ppm AC Voltage Ranges 10 mV, 100 mV, 1 V, 10 V, 100 V, 1000 V (6 ranges) Bandwidth 1 Hz to 10 MHz Measurement Techniques Synchronous Sub-sampled (SYNC), Analog (ANA), Random Sampled (RNDM) Best Accuracy (SYNC, 45 Hz to 1 kHz) 0.01% of reading Maximum Resolution 10 nV (10 mV, 100 mV ranges) AC Current Ranges 100 µA, 1 mA, 10 mA, 100 mA, 1 A (5 ranges) Bandwidth 10 Hz to 100 kHz 24 Hour Accuracy (1 mA range) 0.06% + 0.02% Frequency / Period Frequency Range (Voltage) 1 Hz to 10 MHz Frequency Range (Current) 1 Hz to 100 kHz Period Range 100 ns to 1 sec Best Accuracy 0.01% of reading (1 Hz to 40 Hz, 1 s – 25 ms gate) Input Signal Range 700 V rms – 1 mV rms; 1 A rms – 10 µA rms Time Base Accuracy 10 MHz ±0.01%, 0°C to 55°C Digitizing Resolution 16 to 24 bits Sample Rate (Standard DCV) 0.2 to 100,000 samples/sec Sample Rate (Direct Sampled) Up to 50,000 samples/sec Sample Rate (Sub-Sampled, effective) Up to 100 Msamples/sec Bandwidth (DSDC/DSAC/SSDC/SSAC) 12 MHz Timing Resolution 10 ns (sub-sampling); 100 ns (direct sampling) Time Jitter <100 ps rms System Specifications Max Reading Rate to GPIB (SINT) 100,000 readings/sec Max Reading Rate to Internal Memory 100,000 readings/sec Function/Range Changes 340/sec DCV Autorange Rate 110/sec Reading Memory (Standard) 10,240 readings (20 k bytes) Reading Memory (Option 001) 65,536 readings (+128 k bytes) Non-volatile Memory 14 k bytes (for subprograms and/or state storage) Interface IEEE-488.1, IEEE-728, HPML (Multimeter Language) General Voltage Reference Stability 8 ppm/year standard (4 ppm/year with Option 002) Operating Environment 0 to 55 °C Operating Humidity Up to 95% RH at 40 °C Storage Temperature −40 to +75 °C Warm-up Time 4 hours to published specifications Power Requirements 100/120 V, 220/240 V ±10%; 48-66 Hz, 360-420 Hz auto-sensed; <30 W, <80 VA (peak) Fuse 1.5 A @ 115 V or 0.5 A @ 230 V Safety Compliance IEC 348, UL 1244, CSA Military Classification MIL-T-28800D Type III, Class 5, Style E, Color R Warranty One year Input Terminals Gold-plated tellurium copper Physical Dimensions (H × W × D) 88.9 mm × 425.5 mm × 502.9 mm Net Weight 12 kg (26.5 lbs) Shipping Weight 14.8 kg (32.5 lbs) **Important:** Recommended pairing: a precision 10 VDC source and a precision 10 kΩ resistor are the two external standards required for the 3458A's electronic calibration of all functions, including AC.**Important:** Keysight recommends the use of PTFE cable or other high impedance, low dielectric absorption cable for resistance and low current measurements.**Important:** Current measurements at rates < NPLC 1 are subject to potential noise pickup. Care must be taken to provide adequate shielding and guarding to maintain measurement accuracies.**Important:** The optimum technical specifications of the 3458A are based on auto-calibration (ACAL) of the instrument within the previous 24 hours and following ambient temperature changes of less than ±1 °C.**Important:** Warm-up time of 4 hours is required to reach published specifications. **Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.** ## Details - **Price:** 16377.0 USD - **Vendor:** Keysight - **Type:** Multimeter - **Tags:** home page-new, Keysight, Keysight Technologies, Manufacturers, Meters & DAQ, Multimeter, product_manual_group_3, Product_new ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 16377.00 USD | In stock | ## Images - 3458A Keysight Technologies Multimeter --- > Source: [ValueTronics](https://valuetronics.com/products/3458a-keysight-multimeter-new) > Updated: 2026-05-30