Electrical Specifications (continued)

AC specifications

True rms AC voltage and AC current specifications

Function

Range

Resolution

Accuracy ± (% of reading +

counts of least significant digit)

Burden voltage/shunt

45 Hz to 500 Hz

500 Hz to 1 kHz

Where (applicable)

Voltage

600 mV

0.1 mV

1.0% + 3

2.0% + 3

NA

6 V

0.001 V

1.0% + 3

2.0% + 3

NA

60 V

0.01 V

1.0% + 3

2.0% + 3

NA

600 V

0.1 V

1.0% + 3

2.0% + 3

NA

600 (VZ

3

0.1 V

2.0% + 3

4.0% + 3

NA

0.01 μA

1.5% + 3

NA

< 2.5 V/1 kΩ

0.1 μA

1.5% + 3

NA

< 2.5 V/1 kΩ

0.001 A

1.5% + 3

NA

< 0.2 V/0.005 Ω

0.01 A

1.5% + 3

NA

< 0.4 V/0.005 Ω

Notes for true rms ac voltage specifications:

1. Overload protection: 600 Vrms. For millivolt measurements, 600 Vrms for short circuits with < 0.3 A current.

2. Input impedance: 10 MΩ (nominal) in parallel with < 100 pF.

3. VZ

Notes for ac current specifications:

1. AC current measurement not available for U1231A model.

2. Overload protection for 60 μA to 600 μA range: 600 Vrms for short circuits with < 0.3 A current.

3. Overload protection for 6 A to 10 A range: 11 A/1000 V; 10 × 38 mm fast-acting fuse.

4. 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.

5. AC current between 0.6 mA and 300 mA is not measureable on the U1232A and U1233A models.

Capacitance specifications

Range

Resolution

Accuracy± (% of reading +

counts of least significant digit)

Measuring rate (at full scale)

U1231A/U1232A/U1233A

1000 nF

1 nF

1.9% + 2

4 times/second

10 μF

0.01 μF

1.9% + 2

4 times/second

100 μF

0.1 μF

1.9% + 2

4 times/second

1000 μF

1 μF

1.9% + 2

1 time/second

10 mF

0.01 mF

1.9% + 2

0.1 time/second

1. Overload protection: 600 Vrms for short circuits with < 0.3 A current.

2. The accuracy of for all ranges is specified based on a film capacitor or better, and after the Null function is used to subtract the test lead

resistance and thermal effect (by opening the test leads).

3. The maximum display is 1200 counts.

07 | Keysight | U1230 Series Handheld Digital Multimeters (DMMs) - Data Sheet