Characteristics and Specifications 5
Electrical Specifications
U1231A/U1232A/U1233A User’s Guide 107
Resistance
600 Ω
[4]
0.1 Ω 0.9% + 3 0.9% + 3 0.9% + 3 0.57 mA - -
6 kΩ
[4]
0.001 kΩ 0.9% + 3 0.9% + 3 0.9% + 3 57 μA- -
60 kΩ 0.01 kΩ 0.9% + 3 0.9% + 3 0.9% + 3 5.7 μA- -
600 kΩ 0.1 kΩ 0.9% + 3 0.9% + 3 0.9% + 3 570 nA - -
6 MΩ
[5]
0.001 MΩ 0.9% + 3 0.9% + 3 0.9% + 3
100 nA
//10 MΩ
--
60 MΩ
[5]
0.01 MΩ 1.5% + 3 1.5% + 3 1.5% + 3
100 nA
//10 MΩ
--
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%.
Diode 2 V 0.001 V 0.9% + 2 0.9% + 2 0.9% + 2 0.57 mA - -
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.
Tab le 5- 1 DC specifications (continued)
Function Range Resolution
Accuracy
Tes t
current
Burden
voltage
Input
impedance
U1231A U1232A U1233A (where applicable)
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