Keysight Technologies

34401A Digital Multimeter

Data Sheet

Product Discontinuance Notice

The 34401A DMM and all associated options will be discontinued December 1, 2016.

The last date this product can be ordered is

November 30, 2016.

– For new product purchases, Keysight recommends the 34461A, 6½ digit Truevolt DMM.

– For more information, as well as to access to detailed migration guides, please visit www.keysight.com/find/nextgenDMMs

– To contact a product selection expert, visit www.keysight.com/find/contactus

02 | Keysight | 34401A Digital Multimeter - Data Sheet

Measurement capability

– 6½ digit resolution

– 10 measurement functions: DC/AC voltage, DC/AC current,

2- and 4-wire resistance, diode, continuity, frequency, period

– Basic accuracy: 0.0035% DC, 0.06% AC

– 1000 V max voltage input, 3 A max current input

Use it for systems testing

For systems use, the 34401A gives you faster bus throughput than any other DMM in its class. The 34401A can send up to

1,000 readings/s directly across GPIB in user-friendly ASCII format.

System Capability

– 1000 readings/second

– 512 reading memory www.keysight.com/find/dmm

Superior performance

The Keysight Technologies, Inc. 34401A multimeter gives you the performance you need for fast, accurate bench and system testing. The 34401A provides a combination of resolution, accuracy and speed that rivals DMMs costing many times more. 6½ digits of resolution, 0.0015% basic 24-hr dcV accuracy and 1,000 readings/s direct to GPIB assure you of results that are accurate, fast, and repeatable.

You also get both GPIB and RS-232 interfaces as standard features. Voltmeter Complete and External Trigger signals are provided so you can synchronize to other instruments in your test system. In addition, a TTL output indicates Pass/Fail results when limit testing is used.

To ensure both forward and backward compatibility, the 34401A includes three command languages (SCPI, Keysight 3478A and

Fluke8840A/42A), so you don’t have to rewrite your existing test software. An optional rack mount kit is available.

Easy to use

Commonly accessed attributes, such as functions, ranges, and resolution are selected with a single button press.

Use it on your benchtop

The 34401A was designed with your bench needs in mind. Functions commonly associated with bench operation, like continuity and diode test, are built in. A Null feature allows you to remove lead resistance and other fixed offsets in your measurements.

Other capabilities like min/max/avg readouts and direct dB and dBm measurements make checkout with the 34401A faster and easier.

The 34401A gives you the ability to store up to 512 readings in internal memory. For troubleshooting, a reading hold feature lets you concentrate on placing your test leads without having to constantly glance at the display.

Advanced features are available using menu functions that let you optimize the 34401A for your applications.

The included Keysight IntuiLink software allows you to put your captured data to work easily, using PC applications such as

Microsoft Excel or Word to analyze, interpret, display, print, and document the data you get from the 34401A. You can specify the meter setup and take a single reading or log data to the Excel spreadsheet in specified time intervals. Programmers can use

ActiveX components to control the DMM using SCPI commands.

To find out more about IntuiLink, visit www.keysight.com/find/intuilink

3-year warranty

With your 34401A, you get full documentation, a high-quality test lead set, calibration certificate with test data, and a 3-year warranty, all for one low price.

03 | Keysight | 34401A Digital Multimeter - Data Sheet

Accuracy Specifications ± (% of reading + % of range)

1

Function

DC voltage

True rms AC voltage 4

Resistance

DC current

True rms

AC current

Frequency or period

Continuity

8

Diode test 9

7

4

Range 3

100.0000 mV

1.000000 V

10.00000 V

100.0000 V

1000.000 V

100.0000 mV

1.000000 V to

750.000 V

100.0000 Ω

1.000000 kΩ

10.00000 kΩ

100.0000 kΩ

1.000000 MΩ

10.00000 MΩ

100.0000 MΩ

10.00000 mA

100.0000 mA

1.000000 A

3.00000 A

1.000000 A

3.00000 A

100 mV to 750 V

1000.0 Ω

1.0000 V

Frequency, etc.

3 – 5 Hz

5 – 10 Hz

10 Hz – 20 kHz

20 – 50 kHz

50 – 100 kHz

100 – 300 kHz 6

3 – 5 Hz

5 – 10 Hz

10 Hz – 20 kHz

20 – 50 kHz

50 – 100 kHz 5

100 – 300 kHz 6

1 mA current source

1 mA

100 µA

10 µA

5.0 µA

500 nA

500 nA II 10 MΩ

< 0.1 V burden voltage

< 0.6 V

< 1.0 V

< 2.0 V

3 – 5 Hz

5 – 10 Hz

10 Hz – 5 kHz

3 – 5 Hz

5 – 10 Hz

10 Hz – 5 kHz

3 – 5 Hz

5 – 10 Hz

10 – 40 Hz

40 Hz – 300 kHz

1 mA test current

1 mA test current

0.005 + 0.010

0.010 + 0.010

0.050 + 0.010

0.100 + 0.010

1.00 + 0.04

0.30 + 0.04

0.10 + 0.04

1.10 + 0.06

0.35 + 0.06

0.15 + 0.06

0.10

0.05

0.03

0.006

0.002 + 0.030

0.002 + 0.010

24 hour 2

23 ±1 °C

0.0030 + 0.0030

0.0020 + 0.0006

0.0015 + 0.0004

0.0020 + 0.0006

0.0020 + 0.0006

1.00 + 0.03

0.35 + 0.03

0.04 + 0.03

0.10 + 0.05

0.55 + 0.08

4.00 + 0.50

1.00 + 0.02

0.35 + 0.02

0.04 + 0.02

0.10 + 0.04

0.55 + 0.08

4.00 + 0.50

0.0030 + 0.0030

0.0020 + 0.0005

0.0020 + 0.0005

0.0020 + 0.0005

0.002 + 0.001

0.015 + 0.001

0.300 + 0.010

0.030 + 0.020

0.030 + 0.005

0.080 + 0.010

0.120 + 0.020

1.00 + 0.04

0.30 + 0.04

0.10 + 0.04

1.10 + 0.06

0.35 + 0.06

0.15 + 0.06

0.10

0.05

0.03

0.01

0.008 + 0.030

0.008 + 0.020

90 day

23 ±5 °C

0.0040 + 0.0035

0.0030 + 0.0007

0.0020 + 0.0005

0.0035 + 0.0006

0.0035 + 0.0010

1.00 + 0.04

0.35 + 0.04

0.05 + 0.04

0.11 + 0.05

0.60 + 0.08

4.00 + 0.50

1.00 + 0.03

0.35 + 0.03

0.05 + 0.03

0.11 + 0.05

0.60 + 0.08

4.00 + 0.50

0.008 + 0.004

0.008 + 0.001

0.008 + 0.001

0.008 + 0.001

0.008 + 0.001

0.020 + 0.001

0.800 + 0.001

1 year

23 ±5 °C

0.0050 + 0.0035

0.0040 + 0.0007

0.0035 + 0.0005

0.0045 + 0.0006

0.0045 + 0.0010

1.00 + 0.04

0.35 + 0.04

0.06 + 0.04

0.12 + 0.05

0.60 + 0.08

4.00 + 0.50

1.00 + 0.03

0.35 + 0.03

0.06 + 0.03

0.12 + 0.04

0.60 + 0.08

4.00 + 0.50

0.010 + 0.004

0.010 + 0.001

0.010 + 0.001

0.010 + 0.001

0.010 + 0.001

0.040 + 0.001

0.800 + 0.001

0.050 + 0.020

0.050 + 0.005

0.100 + 0.010

0.120 + 0.020

1.00 + 0.04

0.30 + 0.04

0.10 + 0.04

1.10 + 0.06

0.35 + 0.06

0.15 + 0.06

0.10

0.05

0.03

0.01

0.010 + 0.030

0.010 + 0.020

Temperature coefficient

0 – 18 °C

28 – 55 °C

0.0005 + 0.0005

0.0005 + 0.0001

0.0005 + 0.0001

0.0005 + 0.0001

0.0005 + 0.0001

0.100 + 0.004

0.035 + 0.004

0.005 + 0.004

0.011 + 0.005

0.060 + 0.008

0.20 + 0.02

0.100 + 0.003

0.035 + 0.003

0.005 + 0.003

0.011 + 0.005

0.060 + 0.008

0.20 + 0.02

0.0006 + 0.0005

0.0006 + 0.0001

0.0006 + 0.0001

0.0006 + 0.0001

0.0010 + 0.0002

0.0030 + 0.0004

0.1500 + 0.0002

0.0020 + 0.0020

0.0020 + 0.0005

0.0050 + 0.0010

0.005 + 0.0020

0.100 + 0.006

0.035 + 0.006

0.015 + 0.006

0.100 + 0.006

0.035 + 0.006

0.015 + 0.006

0.005

0.005

0.001

0.001

0.001 + 0.002

0.001 + 0.002

1. Specifications are for 1 hr warm-up and 6½ digits, slow ac filter.

2. Relative to calibration standards.

3. 20% over range on all ranges except 1000 Vdc and 750 Vac ranges.

4. For sinewave input > 5% of range. For inputs from 1% to 5% of range and < 50 kHz, add 0.1% of range additional error.

5. 750 V range limited to 100 kHz or 8 x 107 Volt-Hz.

6. Typically 30% of reading error at 1 MHz.

7. Specifications are for 4-wire ohms function or 2-wire ohms using Math Null. Without Math Null, add 0.2 Ω additional error in 2-wire ohms function.

8. Input > 100 mV. For 10 to 100 mV inputs multiply % of reading error x 10.

9. Accuracy specifications are for the voltage measured at the input terminals only. 1 mA test current is typical. Variation in the current source will create some variation in the voltage drop across a diode junction.

254.4 mm 374.0 mm

212.6 mm 348.3 mm 254.4 mm

212.6 mm

374.0 mm

348.3 mm

04 | Keysight | 34401A Digital Multimeter - Data Sheet

Measurement Characteristics

DC voltage

Measurement method

A-D linearity

Input resistance

10 MΩ or 0.1V, 1 V, 10 V ranges

100 V, 1000 V ranges

Input bias current

Input protection dcV:dcV ratio accuracy

Continuously integrating multi-slope III A-D converter

0.0002% of reading + 0.0001% of range

Selectable > 10,000 MΩ

10 MΩ ±1%

< 30 pA at 25°C

1000 V all ranges

V input

accuracy + V relevance

accuracy

True RMS AC voltage

Measurement method

Crest factor

Additional crest factor errors (non-sinewave)

Input impedance

Input protection

Resistance

Measurement method

Maximum lead resistance

(4-wire)

Input protection

DC current

Shunt resistance

Input protection

Frequency and period

Measurement method

Voltage ranges

Gate time

Continuity/diode

Response time

Continuity threshold

Reciprocal counting technique

Same as ac voltage function

1 s, 100 ms, or 10 ms

300 samples/s with audible tone

Selectable from 1 Ω to 1000 Ω

Measurement noise rejection 60 (50) Hz dc CMRR ac CMRR

140 dB

70 dB

1

AC-coupled true rms-measures the ac component of the input with up to 400 Vdc of bias on any range

Maximum of 5:1 at full scale

Crest factor 1-2: 0.05% of reading

Crest factor 2-3: 0.15% of reading

Crest factor 3-4: 0.30% of reading

Crest factor 4-5: 0.40% of reading

1 MΩ ± 2% in parallel with 100 pF

750 Vrms all ranges

Selectable 4-wire or 2-wire Ohms

Current source referenced to LO input

10% of range per lead for 100 Ω, 1 kΩ ranges

1 kΩ per lead on all other ranges

1000 V all ranges

5 Ω for 10 mA, 100 mA

0.1 Ω for 1 A, 3 A

Externally accessible 3 A 250 V fuse

Internal 7 A 250 V fuse

Integration time and normal mode rejection 2

100 plc/1.67 s (2 s) 60 dB 3

0 plc/167 ms (200 ms)

1 plc/16.7 ms (20 ms)

< 1 plc/3 ms or 800 µs)

60 dB

60 dB

0 dB

3

Operating characteristics 4

Function dcV, dcl, and resistance acV, acl

Frequency or period

6½

6½

6½

5½

4½

5½

4½

6½

6½

Digits

6½

6½

5½

Reading/s

0.6 (0.5)

6 (5)

60 (50)

300

1000

0.15 slow (3 Hz)

1 medium (20 Hz)

10 fast (200 Hz) 5

50

1

9.8

80

1. For 1 kΩ unbalanced in LO lead, ± 500 V peak maximum.

2. For power line frequency ± 0.1%.

3. For power line frequency ± 1% use 40 dB or ± 3% use 30 dB.

4. Reading speeds for 60 Hz and (50 Hz) operation.

5. Maximum useful limit with default settling delays defeated.

6. Speeds are for 4½ digits, delay 0, auto-zero and display OFF.

True RMS AC current

Measurement method

Shunt resistance

Input protection

Directly coupled to the fuse and shunt. ac coupled true rms measurement (measures the ac component only).

0.1 Ω for 1 A and 3 A ranges

Externally accessible 3 A 250 V fuse

Internal 7 A 250 V fuse

05 | Keysight | 34401A Digital Multimeter - Data Sheet

Measurement Characteristics

System speeds

Configuration rates

Autorange rate (dc Volts)

26/s to 50/s

> 30/s

ASCII readings to RS-232 55/s

ASCII readings to GPIB 1000/s

Maximum internal trig rate 1000/s

Max. ext trig. rate to mem 1000/s

continued

Triggering and memory

Reading HOLD sensitivity 10%, 1%, 0.1%, or 0.01% of range

Samples/trigger

Trigger delay

1 to 50,000

0 to 3600 s: 10 µs step size

External trigger delay

External trigger jitter

Memory

< 1 ms

< 500 µs

512 readings

Math functions

NULL, min/max/average, dBm, dB, limit test (with TTL output)

Standard programming languages

SCPI (IEEE-488.2), Keysight 3478A, Fluke 8840A/42A

Accessories included

Test lead kit with probe, alligator and grabber attachments

Operating manual, service manual, test report and power cord

General specifications

Power supply

Power line frequency

Power consumption

Operating environment

Storage temperature

Weight

Safety

RFI and ESD

Vibration and shock

Warranty

100 V/120 V/220 V/240 V ±10%

45 to 66 Hz and 360 to 440 Hz, automatically sensed at power-on

25 VA peak (10 W average)

Full accuracy for 0 to 55 °C, full accuracy to

80% R.H. at 40 °C

–40 to 70 °C

3.6 kg (8.0 lbs)

Designed to CSA, UL-1244, IEC-348

MIL-461C, FTZ 1046, FCC

MIL-T-28800E, Type III, Class 5 (sine only)

1 year

Ordering Information

Keysight 34401A multimeter accessories included: Test lead kit with probe, alligator, and grabber attachments, calibration certificate, test report, and power cord.Also includes CD with:

IntuiLink software, IVI and VXI PnP drivers, Quick start tutorial, user’s guide, command quick reference, service guide, and data sheet.

Options

34401A-A6J ANSI Z540 compliant calibration

Accessories

Probes/Leads/Clip Accessories

11059A Kelvin probe set

11060A

11062A

Surface mount device (SMD) test probes

Kelvin clip set

34133A

34134A

34136A

34138A

Precision electronic test leads

DC coupled current probe

High voltage probe

Test lead set

34171B

34172B

34330A

E2308A

Y1133A

Input terminal connector (sold in pairs)

Input calibration short (sold in pairs)

30 A current shunt

5 k thermistor probe

Low-thermal external digital multimeter scanning kit

Rackmount kits

34190A Rackmount kit Designed for use with only one instrument, mounted on either the left or the right side of the rack.

34191A 2U Dual flange kit

Secures the instrument to the front of the rack.

This kit can be used with the 34194A dual lock link kit to mount two half-width, 2U height instruments side-by side.

34194A Dual lock link kit

Recommended for side-by-side combinations and includes links for instruments of different depths. This kit can be used with the 34191A

2U dual flange kit to mount two half-width, 2U height instruments side-by-side.

Other accessories

34131A

34161A

34398A

E5810B

Hard transit case

Accessory pouch

RS-232 cable, 9 pin (f) to 9 pin (f)

LAN/GPIB gateway

06 | Keysight | 34401A Digital Multimeter - Data Sheet myKeysight www.keysight.com/find/mykeysight

A personalized view into the information most relevant to you.

www.axiestandard.org

AdvancedTCA ® Extensions for Instrumentation and Test (AXIe) is an open standard that extends the AdvancedTCA for general purpose and semiconductor test. Keysight is a founding member of the AXIe consortium.

ATCA ® , AdvancedTCA ® , and the ATCA logo are registered US trademarks of the PCI Industrial Computer Manufacturers Group. www.lxistandard.org

LAN eXtensions for Instruments puts the power of Ethernet and the

Web inside your test systems. Keysight is a founding member of the LXI consortium.

www.keysight.com/go/quality

Keysight Technologies, Inc.

DEKRA Certified ISO 9001:2008

Quality Management System

Keysight Channel Partners www.keysight.com/find/channelpartners

Get the best of both worlds: Keysight’s measurement expertise and product breadth, combined with channel partner convenience.

www.keysight.com/find/34401A

For more information on Keysight

Technologies’ products, applications or services, please contact your local Keysight office. The complete list is available at: www.keysight.com/find/contactus

Americas

Canada

Brazil

Mexico

United States

(877) 894 4414

55 11 3351 7010

001 800 254 2440

(800) 829 4444

Asia Pacific

Australia

China

Hong Kong

India

Japan

Korea

Malaysia

Singapore

Taiwan

Other AP Countries

1 800 629 485

800 810 0189

800 938 693

1 800 11 2626

0120 (421) 345

080 769 0800

1 800 888 848

1 800 375 8100

0800 047 866

(65) 6375 8100

Europe & Middle East

Austria

Belgium

Finland

France

Germany

Ireland

Israel

Italy

Luxembourg

Netherlands

Russia

Spain

Sweden

Switzerland

United Kingdom

0800 001122

0800 58580

0800 523252

0805 980333

0800 6270999

1800 832700

1 809 343051

800 599100

+32 800 58580

0800 0233200

8800 5009286

800 000154

0200 882255

0800 805353

Opt. 1 (DE)

Opt. 2 (FR)

Opt. 3 (IT)

0800 0260637

For other unlisted countries: www.keysight.com/find/contactus

(BP-04-23-15)

This information is subject to change without notice.

© Keysight Technologies, 2013 - 2015

Published in USA, May 21, 2015

5968-0162EN www.keysight.com