34401A Digital Multimeter, 6.5 Digit

34401A Digital Multimeter

6.5 digit resolution uncovers the details that hide from other DMMs

Accuracy you can count on: 0.0015% for dc, 0.06% for ac

Perfect for your bench - more than a dozen functions one or two key presses away

True RMS AC volts and current

Perfect for your system - 1000 rdgs/sec in ASCII format across the GPIB bus

RS-232 and GPIB Standard

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The Agilent 34401A multimeter is a tool kit of useful testing functions, from min/max/avg to built-in limit testing. Getting accuracy in a digital multimeter used to mean spending big. Not anymore. We will give you 6.5 digit precision measurements for the price you would pay for 5.5 digits from other instrument suppliers. Not only will you catch details that hide from other DMMs, you will measure all day long with confidence (its 24-hour dc voltage accuracy is 0.0015%). And you get more than just great performance.

PC Connectivity Software
IntuiLink, free PC connectivity software for many of Agilent's leading instrument families, provides direct access from your PC applications to the instruments that set up and take measurements. IntuiLink lets you spend less time struggling with instrument data, and more time using it, analyzing it, putting it to work. IntuiLink's PC Application toolbar allows you to easily transfer measurement data and images into your familiar PC applications like Microsoft Office Excel and Word, with little or no programming. The ActiveX control feature allows you to control instruments from your PC, providing built-in routines for simple test system automation that streamline repetitive or complex tasks. Integration between instruments and key PC applications has never been tighter.

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Superior performance

The Agilent Technologies 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. 61/2-digits

of resolution, 0.0015% basic 24-hr dcV accuracy and 1,000 readings/sec direct to GPIB assure you of results that are accurate,
fast, and repeatable.
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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.

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The 34401A gives you the ability to store up to 512 readings in internal memory. For trouble-shooting, a reading hold feature
lets you concentrate on placing your test leads without having to constantly glance at the display.
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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/sec directly across GPIB in user-friendly ASCII format.

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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.

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To ensure both forward and backward compatibility, the 34401A includes three command languages (SCPI, Agilent 3478A
and Fluke 8840A /42A), so you don¡¦t have to rewrite your existing test software. An optional rack mount kit is available.
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Easy to use

Commonly accessed attributes, such as functions, ranges, and resolution are selected with a single button press. Advanced
features are available using menu functions that let you optimize the 34401A for your applications.

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The included Agilent 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.agilent.com/find/intuilink
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The 34401A can also be used in conjunction with the 34812A BenchLink Meter software. This Windows-based program
lets you configure and initiate measurements from your computer, and transfer results from your test instrument to your PC.
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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.
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Accuracy Specifications ¡Ó (% of reading + % of range)[1]
Function Range[3] Frequency, etc. 

24 Hour [2]

 23¢J ¡Ó 1¢J

90 Day

 23¢J ¡Ó 5¢J 

1 Year

23¢J ¡Ó 5¢J

Temperature

Coefficient

0¢J¡V18¢J

28¢J¡V55¢J

dc Voltage

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100.0000 mV

1.000000 V

10.00000 V

100.0000 V

1000.000 V

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0.0030 + 0.0030

0.0020 + 0.0006

0.0015 + 0.0004

0.0020 + 0.0006

0.0020 + 0.0006

0.0040 + 0.0035

0.0030 + 0.0007

0.0020 + 0.0005 

0.0035 + 0.0006

0.0035 + 0.0010

0.0050 + 0.0035

0.0040 + 0.0007

0.0035 + 0.0005

0.0045 + 0.0006

0.0045 + 0.0010

0.0005 + 0.0005

0.0005 + 0.0001

0.0005 + 0.0001

0.0005 + 0.0001

0.0005 + 0.0001

True rms

ac Voltage[4]
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100.0000 mV

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3 Hz - 5 Hz

5 Hz - 10 Hz 

10 Hz - 20 kHz

20 kHz - 50 kHz 

50 kHz - 100 kHz

100 kHz - 300 kHz[6]

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 + 0.04

0.35 + 0.04

0.05 + 0.04

0.11 + 0.05 

0.60 + 0.08

4.00 + 0.50

1.00 + 0.04

0.35 + 0.04

0.06 + 0.04

0.12 + 0.04

0.60 + 0.08

4.00 + 0.50

0.100 + 0.004

0.035 + 0.004

0.005 + 0.004

0.011 + 0.005

0.060 + 0.008

0.20 + 0.02
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1.000000 V

to 750.00V

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3 Hz - 5 Hz

5 Hz - 10 Hz

10 Hz - 20 kHz

20 kHz - 50 kHz

50 kHz - 100 kHz[5]

100 kHz - 300 kHz[6]  

1.00 + 0.02

 0.35 + 0.02 

0.04 + 0.02

0.10 + 0.04 0

0.55 + 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

1.00 + 0.03

0.35 + 0.03

0.06 + 0.03

0.12 + 0.04

0.60 + 0.08

4.00 + 0.50

0.100 + 0.003

0.035 + 0.003

0.005 + 0.003

0.011 + 0.005

0.060 + 0.008

0.20 + 0.02

Resistance[7] 

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100.0000 £[

1.000000 k£[

10.00000 k£[

100.0000 k£[

1.000000 M£[

10.00000 M£[

100.0000 M£[

1 mA Current Source 

1 mA

100 µA   

10 µA

5.0 µA

500 nA

500 nA || 10M£[

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

0.008 + 0.004

 0.008 + 0.001

0.008 + 0.001

0.008 + 0.001

0.008 + 0.001

0.020 + 0.001

0.800 + 0.010

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 + 0.010

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

dc Current

10.00000 mA

100.0000 mA

1.000000 A

3.00000 A

<0.1 V Burden Voltage

<0.6 V

<1 V

<2 V 

0.005 + 0.010

0.010 + 0.004

0.050 + 0.006

0.100 + 0.020

0.030 + 0.020

0.030 + 0.005

0.080 + 0.010

0.120 + 0.020

0.050 + 0.020

0.050 + 0.005

0.100 + 0.010

0.120 + 0.020

0.002 + 0.0020

0.002 + 0.0005

0.005 + 0.0010

0.005 + 0.0020

True rms

ac Current[4]

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1.000000 A

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3 Hz - 5 Hz

5 Hz - 10 Hz

10 Hz - 5 kHz

1.00 + 0.04

0.30 + 0.04

0.10 + 0.04

1.00 + 0.04

0.30 + 0.04

0.10 + 0.04

1.00 + 0.04

0.30 + 0.04

0.10 + 0.04

0.100 + 0.006

0.035 + 0.006

0.015 + 0.006
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3.00000 A

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3 Hz - 5 Hz

5 Hz - 10 Hz

10 Hz - 5 kHz

1.10 + 0.06

0.35 + 0.06

0.15 + 0.06

1.10 + 0.06

0.35 + 0.06

0.15 + 0.06

1.10 + 0.06

0.35 + 0.06

0.15 + 0.06

0.100 + 0.006

0.035 + 0.006

0.015 + 0.006

Frequency

or Period[8]

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100 mV

to

750 V

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3 Hz - 5 Hz

5 Hz - 10 Hz

10 Hz - 40 Hz

40 Hz - 300 kHz

0.10

0.05

0.03

0.006 

0.10

0.05

0.03

0.01

0.10

0.05

0.03

0.01

0.005

0.005

0.001

0.001
Continuity 1000.0£[ 1mA Test Current 0.002 + 0.010 0.010 + 0.020 0.008 + 0.020 0.001 + 0.002
Diode Test    1.0000V 1mA Test Current 0.002 + 0.010 0.008 + 0.020  0.010 + 0.020 0.001 + 0.002

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1 Specifications are for 1hr warm-up and 61⁄2 digits, Slow ac filter.
2 Relative to calibration standards.
3 20% over range on all ranges except 1000Vdc and 750Vac ranges.
4 For sinewave input > 5% of range. For inputs from 1% to 5% of range and < 50kHz, add 0.1% of range additional error.
5 750V range limited to 100 kHz or 8 x107 Volt-Hz.
6 Typically 30% of reading error at 1MHz.
7 Specifications are for 4- wire ohms function or 2-wire ohms using Math Null. Without Math Null, add 0.2 ½ additional error in 2-wire ohms function.
8 Input >100 mV. For 10 mV inputs multiply % of reading error x10.

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