U1240 Datasheet, PDF (3/9 Pages) Agilent(Hewlett-Packard) – Agilent U1240 Series Handheld Digital Multimeters

Electrical Specifications
DC specifications
Function Range
Resolution
Test current/
burden voltage
Accuracy ± (% of reading + counts
of least significant digit)
U1241B
U1242B
1000.0 mV
0.1 mV
–
0.09% + 5
10.000 V
0.001 V
–
Voltage¹
100.00 V
0.01 V
–
0.09% + 2
1000.0 V
0.1 V
–
0.15% + 5
1000.0 µA
0.1 µA
< 0.06 V (50 Ω)
0.1% + 3
10000 µA
1 µA
< 0.55 V (50 Ω)
0.1% + 3
Current
100.00 mA
0.01 mA
< 0.18 V (0.5 Ω)
0.2% + 3
440.0 mA²
0.1 mA
< 0.8 V (0.5 Ω)
0.5% + 3
10.000 A³
0.001 A
< 0.4 V (0.01 Ω)
0.6% + 5
1000.0 Ω⁵
0.1 Ω
0.5 mA
Resistance⁴
10.000 kΩ⁵
100.00 kΩ
1000.0 kΩ
0.001 kΩ
0.01 kΩ
0.1 kΩ
50 µA
4.91 µA
447 nA
0.3% + 3
10.000 MΩ
0.001 MΩ
112 nA
0.8% + 3
100.00 MΩ⁶ 0.01 MΩ
112 nA
1.5% + 3
Diode test⁷
1V
0.001 V
approximately 0.5 mA
0.3% + 2
1. Input impedance: 10 MΩ (nominal).
2. Current can be measured up to 440 mA continuously. An additional 0.2% needs to be added to the specified accuracy if the signal measured is in the
range of 440 mA to 1100 mA for 30 seconds maximum. After measuring a current of > 440 mA, leave the meter to cool down for twice the measur-
ing time used before applying a low current measurement.
3. Current can be measured up to 10 A continuously with a maximum operating temperature of 50 °C. An additional 0.3% needs to be added to the
specified accuracy if the signal measured is in the range of 10 A to 19.999 A for 15 seconds maximum. After measuring a current of > 10 A, leave the
meter to cool down for 60 seconds before applying a low current measurement.
4. The maximum open voltage is < 2.8 V. For instant continuity, the built-in buzzer sounds when resistance is < 10.0 Ω.
5. The accuracy of 1 kΩ and 10 kΩ is specified after Null function, which is used to substrate the test lead resistance and the thermal effect.
6. For the range of 100 MΩ, the R.H. is specified for < 60%. The temperature coefficient will be 0.15 times of specified accuracy as > 50 MΩ.
7. Overload protection: 1000 V RMS for circuits < 0.3 A short circuit current. The built-in buzzer sounds when reading is approximately below 50 mV and
audible single tone for normal forward biased diode or semiconductor junction as 0.3 V ≤ Reading ≤ 0.8 V.
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