Keysight 34401A 6½ Digital Multimeter

The Keysight 34401A 6½ Digital Multimeter, formerly known as the Agilent 34410A, offers 6½ digit resolution, 10 measurement functions and a basic accuracy of 0.0035% DC, 0.06% AC. Keysight 34401A units offer a 1000V max voltage input and a 3A max current input. Synthesizing leading-edge resolution, precision and speed to rival more expensive units, the Keysight 34410A is guaranteed to deliver accurate and repeatable test results. The system capabilities include 1000 readings per second, 512 reading memory, and the ability to control the digital multimeter from your computer to visualize and analyze data with ease.

Keysight 34401A Digital Multimeter units were previously manufactured by Agilent Technologies. Agilent 34401A specs may differ slightly from the Keysight 34401A. See datasheet.

Product Info

Input Characteristics
Range	Maximum Reading (6½ digits)	Resolution in digits - 6½	Input Resistance
100 mV	120.0000	100 nV	10 M ohms or > 10 G ohms
1V	1.200000	1 µV	10 M ohms or > 10 G ohms
10 V	12.00000	10 µV	10 M ohms or > 10 G ohms
100 V	120.0000	100 µV	10 M ohms
1000 V	1050.000	1 mV	10 M ohms
Measurement Accuracy: ± (% or reading + % of range)
Range	1-Year 23° C ±5° C
100 mV	0.0050 + 0.0035
1 V	0.0040 + 0.0007
10 V	0.0035 + 0.0005
100 V	0.0045 + 0.0006
1000 V	0.0045 + 0.0010

34401A AC Voltage (true rms) Specifications:

Frequency	Ranges 100 mV	Ranges 1, 10, 100 750 V
3 to 5 Hz	1.00 + 0.04	1.00 + 0.03
5 to 10 Hz	0.35 + 0.04	0.35 + 0.03
10 Hz to 20 kHz	0.05 + 0.04	0.06 + 0.03
20 to 50 kHz	0.12 + 0.04	0.12 + 0.05
50 to 100 kHz	0.60 + 0.08	0.60 + 0.08
100 to 300 kHz	4.00 + 0.50	4.00 + 0.50
Measurement Accuracy	± (%of reading + % of range); 1 year, 23° C ± 5° C

34401A Frequency and Period Specifications:

Range	3 Hz to 300 kHz (333 ms to 3.33 µs)
Resolution	10 µHz to 1 Hz
Other Measurement Functions	Continuity, Diode Test, Ratio dc: dc, Limit Test
Math Functions	NULL, Min/Max/Avg, dB, dBm, Limit Test
Memory	512 reading internal storage
Standard Programming Languages	SCPI, HP 3478A AND Fluke 8840A/42A
Computer Interface	HP-IB and RS-232C standard

34401A Resistance: (2-wire ohms, 4-wire ohms)

Input Characteristics
Range	Maximum reading (6½)	Resolution in digits 6½
100 ohms	120.0000	100 µ ohms
1 k ohms	1.200000	1 m ohms
10 k ohms	12.00000	10 m ohms
100 k ohms	120.0000	100 m ohms
1 M ohms	1.200000	1 ohms
10 M ohms	12.00000	10 ohms
100 M ohms	120.0000	100 ohms

Range	1-Year 23° C ±5° C
100 ohms	0.010 + 0.004
1 k ohms	0.010 + 0.001
10 k ohms	0.010 + 0.001
100 k ohms	0.010 + 0.001
1 M ohms	0.010 + 0.001
10 M ohms	0.040 + 0.001
100 M ohms	0.800 + 0.010
Measurement Accuracy	± (% of reading + % of range) Specs are for 4-wire ohms or 2-wire ohms using Math Null

34401A DC Current Specifications:

Range	1-Year 23° C ±5° C
10 mA	0.050 + 0.020
100 mA	0.050 + 0.005
1 A	0.100 + 0.010
3 A	0.120 + 0.020
Input Protection	Externally accessible 3A 250V fuse; internal 7A 500V fuse

34401A AC Current (True Rms) Specifications:

Frequency	Ranges 1A	Ranges 3A
3 to 5 Hz	1.00 + 0.04	1.10 + 0.06
5 to 10 Hz	0.30 + 0.04	0.35 + 0.06
10 Hz to 5 kHz	0.10 + 0.04	0.15 + 0.06
Measurement Accuracy	± (% of reading + % of range); 1 year, 23° C ± 5° C

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
1000 readings/second
512 reading memory
BenchVue Enabled control your DMM from your PC to view and capture your data easily