25 | Keysight | 34980A Multifunction Switch/Measure Unit - Data Sheet
34980A system speciꢁcations and characteristics
DMM accuracy ± (% of reading + % of range)
Includes measurement error, switching error, and transducer conversion error
Measurement including switch error [1]
Temperature
coefꢀcient/°C
>Tcal ± 5°C
24 hour [2,3]
Tcal ± 1°C
90 days
Tcal ± 5°C
1 year
Tcal ± 5°C
Function
Range [4]
Frequency, etc.
DC voltage
(with 34921A/22A/
31A/32A) [10] [11]
Input impedance = Hi-Z 100.0000 V
10 V range and below
100.0000 mV
1.000000 V
10.00000 V
0.0030 + 0.0035
0.0020 + 0.0006
0.0015 + 0.0004
0.003 + 0.0006
0.003 + 0.0020
0.0040 + 0.0040
0.0030 + 0.0007
0.0020 + 0.0005
0.0045 + 0.0006
0.0045 + 0.0030
0.0050 + 0.0040
0.0040 + 0.0007
0.0035 + 0.0005
0.0055 + 0.0006
0.0055 + 0.0030
0.0005 + 0.0005
0.0005 + 0.0001
0.0005 + 0.0001
0.0005 + 0.0001
0.0005 + 0.0003
300.0000 V
True RMS AC
voltage [5]
All ranges from
100.0000 mV
to 100.0000 V
3 Hz-5 Hz
5 Hz-10 Hz
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 + 0.05
0.35 + 0.05
0.04 + 0.05
0.10 + 0.10
0.55 + 0.20
4.00 + 1.25
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 + 0.08
0.35 + 0.08
0.05 + 0.08
0.11 + 0.12
0.60 + 0.20
4.00 + 1.25
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 + 0.08
0.35 + 0.08
0.06 + 0.08
0.12 + 0.12
0.60 + 0.20
4.00 + 1.25
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 + 0.008
0.035 + 0.008
0.005 + 0.008
0.011 + 0.012
0.060 + 0.020
0.20 + 0.05
10 Hz-20 kHz
20 kHz-50 kHz
50 kHz-100 kHz
100 kHz-300 kHz [6]
3 Hz-5 Hz
300.0000 V
5 Hz-10 Hz
10 Hz-20 kHz
20 kHz-50 kHz
50 kHz-100 kHz
100 kHz-300 kHz [6]
Resistance [7]
100.0000 Ω
1 mA
1 mA
100 uA
10 uA
5.0 uA
0.0030 + 0.0035
0.0020 + 0.0006
0.0020 + 0.0005
0.0020 + 0.0005
0.002 + 0.001
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
1.000000 kΩ
10.00000 kΩ
100.0000 kΩ
1.000000 MΩ
10.00000 MΩ
100.0000 MΩ
500 nA
500 nA/10 MΩ
0.015 + 0.001
0.300 + 0.010
Frequency and
period [8]
100 mV to 300 V 3 Hz-5 Hz
5 Hz-10 Hz
0.10
0.10
0.05
0.03
0.01
0.10
0.05
0.03
0.01
0.005
0.005
0.001
0.001
0.05
0.03
0.006
10 Hz-40 Hz
40 Hz-300 kHz
DC current
(34921 only)
10.00000 mA
100.0000 mA
1.000000 A
< 0.1 V burden typ.
< 0.6 V
< 2 V
0.005 + 0.010
0.010 + 0.004
0.050 + 0.006
0.030 + 0.020
0.030 + 0.005
0.080 + 0.010
0.050 + 0.020
0.050 + 0.005
0.100 + 0.010
0.002 + 0.0020
0.002 + 0.0005
0.005 + 0.0010
True RMS AC current
(34921A only)
10.00000 mA
and [5]
1.0 A
100.0000 mA [9]
3 Hz-5 Hz
1.00 + 0.04
0.30 + 0.04
0.10 + 0.04
1.00 + 0.5
0.30 + 0.5
0.10 + 0.5
1.00 + 0.04
0.30 + 0.04
0.10 + 0.04
1.00 + 0.5
0.30 + 0.5
0.10 + 0.5
1.00 + 0.04
0.30 + 0.04
0.10 + 0.04
1.00 + 0.5
0.30 + 0.5
0.10 + 0.5
0.100 + 0.006
0.035 + 0.006
0.015 + 0.006
0.100 + 0.006
0.035 + 0.006
0.015 + 0.006
5 Hz-10 Hz
10 Hz-5 kHz
3 Hz-5 Hz
5 Hz-10 Hz
10 Hz-5 kHz
[1] One hour warm-up and a fixed configuration with
slow AC filter, sine wave input, and 6½ digits.
Temperature within ± 5°C of temperature at
calibration (Tcal between 18-28°C)
[6] Typically 30% of reading error at 1 MHz, limited to
[8] For inputs >100mV; for inputs 10mV to 100mV
multiply % of reading error X 10; for 1 sec
aperture (6 1/2 digits)
1 x 108 volt-hertz
[7] Accuracy for 4-wire ohms. Add 4 ohms uncertainty
(typ) for 2-wire ohms function due to conductor
and contact resistance variability in the DMM.
The 2-wire resistance accuracy can be improved
by measuring a short on each channel and using
the built-in y = Mx + b scaling function. See User
Guide, Chapter 3. The series resistance of the
34923/24/25/33/34 limits the use of the 100 ohms
resistance range. Keysight recommends the use of
4-wire ohms for resistance measurements. For high
accuracy voltage measurements, select the DMM
input resistance setting of > 10 G ohms to minimize
the impact of relay contact resistance.
[9] Specified only for inputs > 10 mA. For AC filter
slow
[2] 90 minute warm-up and a fixed configuration and
6½ digits. Temperature within ± 1°C of temperature
at calibration (Tcal between 18-28°C)
[10] Add 50 uV error for 34923A/24A/33A and 7 μV
error for the 34925A
[3] Relative to calibration standards
[11] Voltage measurements using Fixed-Z input
[4] 20% over range on all ranges except 300VDC and
impedance for the 100 V and 300 V ranges.
AC ranges and 1 ADC and AC current ranges
[5] For sine wave input > 5% of range; for inputs from
1% to 5% of range and < 50 kHz add 0.1% of range
additional error; for AC filter slow
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