Agilent 34401A Multimeter
Uncompromising Performance for Benchtop and System Testing
Data Sheet
• Measure up to 1000 volts
½ digits resolution
• 0.0015% basic dcV
accuracy (24 hour)
• 0.06% basic acV
accuracy (1 year)
• 3 Hz to 300 kHz ac bandwidth
• 1000 readings/s direct to GPIB
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/s direct to
GPIB assure you of results that are accurate, fast, and repeatable.
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 trouble-shooting, a reading hold feature lets you concentrate on placing your test leads without having to constantly glance at the display.
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.
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, Agilent 3478A and Fluke
8840A /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.
Advanced features are available using menu functions that let you optimize the
34401A for your applications.
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.
Program-mers can use ActiveX components to control the DMM using SCPI commands. To find out more about IntuiLink, visit www.agilent.com/find/intuilink
1-Year Warranty
With your 34401A, you get full documentation, a high-quality test lead set, calibration certificate with test data, and a 1-year warranty, all for one low price.
Accuracy Specifications ± (% of reading + % of range)
1
Function Range 3 Frequency, etc.
24 Hour 2
23°C ±1°C
90 Day
23°C ±5°C
1 Year
23°C ±5°C
Temperature Coefficient
0°C – 18°C
55°C
DC voltage 100.0000 mV
1.000000 V
10.00000 V
100.0000 V
1000.000 V
0.0030 + 0.0030 0.0040 + 0.0035
0.0020 + 0.0006 0.0030 + 0.0007
0.0015 + 0.0004 0.0020 + 0.0005
0.0020 + 0.0006 0.0035 + 0.0006
0.0020 + 0.0006 0.0035 + 0.0010
0.0050 + 0.0035 0.0005 + 0.0005
0.0040 + 0.0007 0.0005 + 0.0001
0.0035 + 0.0005 0.0005 + 0.0001
0.0045 + 0.0006 0.0005 + 0.0001
0.0045 + 0.0010 0.0005 + 0.0001
True rms
AC voltage 4
Resistance 7
DC current
True rms
AC current 4
Frequency or period 8
Continuity
100.0000 mV 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
1.000000 V
to 750.000 V
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
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
1.00 + 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
1 mA Current Source 0.0030 + 0.0030
1 mA 0.0020 + 0.0005
100 µA
10 µA
0.0020 + 0.0005
0.0020 + 0.0005
5.0 µA
500 nA
500 nA || 10 MΩ
0.002 + 0.001
0.015 + 0.001
0.300 + 0.010
< 0.1 V Burden Voltage 0.005 + 0.010
< 0.6 V
< 1.0 V
< 2.0 V
0.010 + 0.004
0.050 + 0.006
0.100 + 0.020
3 Hz – 5 Hz
5 Hz – 10 Hz
10 Hz – 5 kHz
3 Hz – 5 Hz
5 Hz – 10 Hz
10 Hz – 5 kHz
1.00 + 0.04
0.30 + 0.04
0.10 + 0.04
1.10 + 0.06
0.35 + 0.06
0.15 + 0.06
3 Hz – 5 Hz
5 Hz – 10 Hz
10 Hz – 40 Hz
40 Hz – 300 kHz
0.10
0.05
0.03
0.006
1 mA test current 0.002 + 0.030
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 + 0.010
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
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 + 0.010
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
0.100 + 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
Diode test 9 1.0000 V 1 mA test current 0.002 + 0.010 0.008 + 0.020 0.010 + 0.020 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 10 7 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 mV to 100 mV inputs multiply % of reading
9. Accuracy specifications are for the voltage measured at the input termi-
nals 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
212.6 mm
103.6 mm
88.5 mm
374.0 mm
348.3 mm
22
Measurement Characteristics
DC Voltage
Measurement Method:
Continuously integrating multi-slope III
A-D Linearity: 0.0002% of reading +
0.0001% of range
Input Resistance:
10 MΩ or 0.1 V, 1 V, 10 V ranges:
Selectable > 10,000 MΩ
100 V, 1000 V ranges: 10 MΩ ±1%
Input Bias Current: < 30 pA at 25°C
Input Protection: 1000 V all ranges dcV:dcV ratio accuracy:
V input
Accuracy + V relevance
Accuracy
True RMS AC Voltage
Measurement Method:
AC-coupled true rms-measures the ac
component of the input with up to 400
Vdc of bias on any range.
Crest Factor:
Maximum of 5:1 at full scale.
Additional Crest Factor errors
(non-sinewave):
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
Input Impedance:
1 MΩ ± 2% in parallel with 100 pF
Input Protection: 750 Vrms all ranges
Resistance
Measurement Method:
Selectable 4-wire or 2-wire Ohms.
Current source referenced to LO input.
Maximum Lead Resistance (4-wire):
10% of range per lead for 100 Ω, 1 kΩ
ranges.
1 kΩ per lead on all other ranges.
Input Protection: 1000 V all ranges
DC Current
Shunt Resistance:
5 Ω for 10 mA, 100 mA
0.1 Ω for 1 A, 3 A
Input Protection:
Externally accessible 3 A 250 V fuse
Internal 7 A 250 V fuse
True RMS AC Current
Measurement Method:
Directly coupled to the fuse and shunt.
ac coupled true rms measurement
(measures the ac component only).
Shunt Resistance:
0.1 Ω for 1 A and 3 A ranges
Input Protection:
Externally accessible 3 A 250 V fuse
Internal 7 A 250 V fuse
Frequency and Period
Measurement Method:
Reciprocal counting technique
Voltage Ranges:
Same as ac voltage function
Gate Time: 1 s, 100 ms, or 10 ms
Continuity/Diode
Response Time:
300 samples/s with audible tone
Continuity Threshold:
Selectable from 1 Ω to 1000 Ω
Measurement Noise Rejection 60 (50) Hz 1 dc CMRR: 140 dB ac CMRR: 70 dB
Integration Time and
Normal Mode Rejection 2
100 plc/1.67 s (2 s): 60 dB
3
10 plc/167 ms (200 ms): 60 dB
3
1 plc/16.7 ms (20 ms): 60 dB
<1 plc/3 ms or 800 µs): 0 dB
Operating Characteristics 4 dcV, dcl, and 6 ½
Resistance 6
0.6 (0.5)
½
6 (5)
½
60 (50)
5
4 acV, acl 6 ½ 0.15 slow (3 Hz)
6
½
1 medium (20 Hz)
6
5
Frequency 6 1 or Period 5 ½
½
9.8
4
Frequency and Period
Configuration rates: 26/s to 50/s
Autorange rate (dc Volts): >30/s
ASCII readings to RS-232: 55/s
ASCII readings to RS-232: 1000/s
Maximum internal trig rate: 1000/s
Max. ext trig. rate to mem: 1000/s
Triggering and Memory
Reading HOLD Sensitivity:
10%, 1%, 0.1%, or 0.01% of range
Samples/Trigger: 1 to 50,000
Trigger Delay: 0 to 3600 s: 10 µs step size
External Trigger Delay: < 1 ms
External Trigger Jitter: < 500 µs
Memory: 512 readings
Math Functions
NULL, min/max/average, dBm, dB, limit
test (with TTL output)
Standard Programming Languages
SCPI (IEEE-488.2), Agilent 3478A,
Accessories Included
Test lead kit with probe, alligator
and grabber attachments
Operating manual, service manual,
test report and power cord
General Specifications
Power Supply:
100 V/120 V/220 V/240 V ±10%
Power Line Frequency:
45 Hz to 66 Hz and 360 Hz to 440 Hz,
Automatically sensed at power-on
Power Consumption: 25 VA peak
(10 W average)
Operating Environment:
Full accuracy for 0°C to 55°C,
Full accuracy to 80% R.H. at 40°C
Storage Temperature: -40°C to 70°C
Weight: 3.6 kg (8.0 lbs)
Safety: Designed to CSA, UL-1244,
IEC-348
RFI and ESD: MIL-461C, FTZ 1046, FCC
Vibration & Shock: MIL-T-28800E, Type
III, Class 5 (sine only)
Warranty: 1 year
1. For 1 kΩ unbalanced in LO lead,
± 500 V peak maximum.
2. For power line frequency ± 0.1%.
3. For power line frequency ± 0.1% 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
6. Speeds are for 4½ digits, delay 0, auto-zero
and display OFF.
33
www.agilent.com
www.agilent.com/find/34401A
Ordering Information
Agilent 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 Surface mount device (SMD) test
probes
11062A Kelvin clip set
34133A Precision electronic test leads
34134A DC coupled current probe
34136A High voltage probe
34138A Test lead set
34171B Input terminal connector
(sold in pairs)
34172B Input calibration short
(sold in pairs)
34330A 30 A current shunt
E2308A 5 k thermistor probe
Y1133A Low-thermal external digital multimeter scanning kit
Rack Mount 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 Hard transit case
34161A Accessory pouch
34398A RS-232 cable, 9 pin (f) to 9 pin (f)
E5810A LAN/GPIB gateway
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Revised: January 6, 2012
Product specifications and descriptions in this document subject to change without notice.
© Agilent Technologies, Inc. 2012
Published in USA, April 24, 2012
5968-0162EN
