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

03 | Keysight | U1240 Series Handheld Digital Multimeters - Data Sheet
Electrical Specifications
DC specifications
Function
Voltage¹
Current
Resistance⁴
Diode test⁷
Range
Resolution
1000.0 mV
10.000 V
100.00 V
1000.0 V
1000.0 µA
10000 µA
100.00 mA
440.0 mA²
10.000 A³
1000.0 Ω⁵
10.000 kΩ⁵
100.00 kΩ
1000.0 kΩ
10.000 MΩ
100.00 MΩ⁶
1V
0.1 mV
0.001 V
0.01 V
0.1 V
0.1 µA
1 µA
0.01 mA
0.1 mA
0.001 A
0.1 Ω
0.001 kΩ
0.01 kΩ
0.1 kΩ
0.001 MΩ
0.01 MΩ
0.001 V
Test current/burden voltage Accuracy ±(% of reading + counts of least significant digit)
U1241B
U1242B
–
0.09% + 5
–
0.09% + 2
–
–
0.15% + 5
< 0.06 V (50 Ω)
0.1% + 3
< 0.55 V (50 Ω)
0.1% + 3
< 0.18 V (0.5 Ω)
0.2% + 3
< 0.8 V (0.5 Ω)
0.5% + 3
< 0.4 V (0.01 Ω)
0.6% + 5
0.5 mA
50 µA
4.91 µA
0.3% + 3
447 nA
112 nA
0.8% + 3
112 nA
1.5% + 3
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 measuring 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.