Datasheet

Electrical Specifications
DC specifications
Function Range Resolution
Accuracy ±
(% of reading + counts of
least significant digit)
Test
current
Burden
voltage/
shunt
Input
impedance
U1231A/U1232A/
U1233A
Where
(applicable)
Where
(applicable)
Where
(applicable)
Voltage
600 mV
1
0.1 mV 0.5% + 2 NA NA 11.18 MΩ
6 V 0.001 V 0.5% + 2 NA NA 11.18 MΩ
60 V 0.01 V 0.5% + 2 NA NA 10.1 MΩ
600 V 0.1 V 0.5% + 2 NA NA 10 MΩ
600 V (VZ
LOW
)
2
0.1 V 2% + 3 NA NA 3 kΩ
Resistance
600 Ω
4
0.1 Ω 0.9% + 3 0.57 mA NA NA
6 kΩ
4
0.001 kΩ 0.9% + 3 57 μA NA NA
60 kΩ 0.01 kΩ 0.9% + 3 5.7 μA NA NA
600 kΩ 0.1 kΩ 0.9% + 3 570 nA NA NA
6 MΩ
5
0.001 MΩ 0.9% + 3 100 nA/10 MΩ NA NA
60 MΩ
5
0.01 MΩ 1.5% + 3 100 nA/10 MΩ NA NA
Diode
3
2 V 0.001 V 0.9% + 2 0.57 mA NA NA
Current
4
60 μA
1
0.01 μA 1.0% + 2 NA < 2.5 V/1 kΩ NA
600 μA
1
0.1 μA 1.0% + 2 NA < 2.5 V/1 kΩ NA
6 A
2,5
0.001 A 1.0% + 3 NA < 0.2 V/0.005 Ω NA
10 A
2, 3
0.01 A 1.0% + 3 NA < 0.4 V/0.005 Ω NA
Notes for DC voltage specifications:
1. The accuracy of the 600 mV range is specified after the Null function is used to subtract the thermal effect (by shorting the test leads).
2. For VZ
LOW
(low input impedance) measurements, auto-ranging is disabled and the multimeter’s range is set to 600 V in the manual
ranging mode.
Notes for resistance specifications:
1. Overload protection: 600 Vrms for short circuits with < 0.3 A current.
2. Maximum open voltage is < +3 V.
3. Built-in buzzer beeps when the resistance measured is less than 23 Ω ± 10 Ω. The multimeter can capture intermittent measurements longer
than 1 ms.
4. The accuracy of the 600 Ω to 6 kΩ range is specified after the Null function is used to subtract the test lead resistance and thermal effect (by
shorting the test leads).
5. For the ranges of 6 MΩ and 60 MΩ, the RH is specified for < 60%.
Notes for diode specifications:
1. Overload protection: 600 Vrms for short circuits with < 0.3 A current.
2. Built-in buzzer beeps continuously when the voltage measured is less than 50 mV and beeps once for forward-biased diode or semiconductor
junctions measured between 0.3 V and 0.8 V (0.3 V ≤ reading ≤ 0.8 V).
3. Open voltage for diode: < +3 V DC.
4. The maximum display for diode measurements is 2100 counts.
Notes for DC current specifications:
1. Overload protection for 60 μA to 600 μA range: 600 Vrms for short circuits with < 0.3 A current.
2. Overload protection for 6 A to 10 A range: 11 A/1000 V; 10 × 38 mm fast-acting fuse.
3. Specification for 10 A range: 10 A continuous. Add 0.3% to the specified accuracy when measuring signals > 10 A to 20 A for 30 seconds
maximum. After measuring currents > 10 A, cool down the multimeter for twice the duration of the measured time before proceeding with
low current measurements.
4. Only applicable for the U1232A/U1233A model
5. DC current between ± (0.6 mA and 1 mA) is not measureable on the U1232A and U1233A models.
06 | Keysight | U1230 Series Handheld Digital Multimeters (DMMs) - Data Sheet