U1241C Datasheet, PDF (10/15 Pages) Keysight Technologies – U1240 Series Handheld Digital Multimeters

10 | Keysight | U1240 Series Handheld Digital Multimeters - Data Sheet
AC voltage specifications for U1241C / U1242C
Function
Range
Resolution
AC voltage^1,4
True RMS
AC voltage^1,4
Averaging sense
100 mV²
600 mV²
1000 mV
10 V
100 V
1000 V
Z_LOW3
(applicable to 1000 V range)
100 mV²
600 mV²
1000 mV
10 V
100 V
1000 V
0.01 mV
0.1 mV
0.1 mV
0.001 V
0.01 V
0.1 V
0.1 V
0.01 mV
0.1 mV
0.1 mV
0.001 V
0.01 V
0.1 V
Accuracy ± (% of reading + counts of least significant digit)
40 Hz to 1 kHz
1 kHz to 2 kHz
1.0 % + 3
1.5 % + 3
1.0 % + 3
1.5 % + 3
1.0 % + 3
1.5 % + 3
1.0 % + 3
1.5 % + 3
1.0 % + 3
1.5 % + 3
1.0 % + 3
1.5 % + 3
2.0 % + 4
N/A
1.0 % + 5
1.0 % + 5
1.0 % + 5
1.0 % + 5
1.0 % + 5
1.0 % + 5
1.5 % + 5
1.5 % + 5
1.5 % + 5
1.5 % + 5
1.5 % + 5
1.5 % + 5
Notes
1. Overload protection: 1000 Vrms.
2. 100 mV and 600 mV ranges available on Temperature T1 terminal. The accuracy is specified for
10 MΩ (nominal) input impedance. The accuracy is specified after NULL function is used to zero out
thermal effect (by shorting test leads).
3. Only available in U1242C only. 1.8 kΩ typical input impedance for Z_LOW mode.
4. The input signal is lower than the product of 20,000,000 V x Hz.
AC current specifications for U1241C / U1242C
Function
Range
Resolution
AC current⁵
1000 µA³
10 mA³
100 mA³
1000 mA^1,3
10 A^2,4
0.1 µA
0.001 mA
0.01 mA
0.1 mA
0.001 A
Accuracy ± (% of reading + counts of least significant digit)
40 Hz to 1 kHz (True RMS)
40 Hz to 1 kHz
(Averaging sense)⁶
1.0 % + 3
1.2 % + 5
1.0 % + 3
1.2 % + 5
1.0 % + 3
1.2 % + 5
1.0 % + 3
1.2 % + 5
1.2 % + 5⁴
1.2 % + 5
Notes
1. Current can be measured up to 440 mA continuously. Maximum of 20 hours for measuring current
more than 440 mA and up to 600 mA. 100 mA and 600 mA ranges have thermal effect of 0.35 µA/mA
to be offset after current applied to these ranges. Cool down the meter for at least 6 seconds if
100 mA was applied, and at least 3 minutes if 600 mA was applied; or alternatively use the NULL
function to zero-out thermal effect with open test lead before measuring the signal.
2. Current can be measured up to 10 A continuously. Maximum of 30 seconds for measuring current
more than 10 A to 20 A, add 0.3 % to specified accuracy. The multimeter needs to be cool down
after measuring current that is more than 10 A. Cool down the meter for twice the duration of the
measured time and use NULL function to zero-out thermal effect before proceeding with lower
current measurement.
3. 1000 µA to 1000 mA ranges (connection with mA terminal) overload protection by 10 x 35 mm,
440 mA / 1000 V, 10 kA minimum fast-acting fuse.
4. 10 A ranges (connection with A terminal) overload protection by 10 x 38 mm, 11 A / 1000 V, 20 kA
minimum fast-acting fuse.
5. Ensure good ventilation and no heat element close to the meter.
6. The averaging sense is calibrated for sine wave only. Add additional 0.05 counts / °C to accuracy
from –20 0C to 18 0C or –28 °C to 55 °C.