Specifications
4
FUNCTION RANGE RESOLUTION
ACCURACY ± (% of reading + No. of Least Significant Digit)
FREQUENCY
30 Hz ~ 45 Hz 45 Hz ~ 2 kHz 2 kHz ~ 20 kHz
AC CURRENT
[2]
500.00 µA
[4]
0.01 µA 1.5+50
0.8+20
3.0+80
5000.0 µA 0.1 µA
1.5+40 3.0+60 50.000 mA 0.001 mA
440.00 mA 0.01 mA
5.0000 A 0.0001 A
2.0+40
[6]
3+60,
<3 A/5 kHz
10.000 A
[5]
0.001 A
U1252A/U1252B/U1253A/U1253B AC SPECIFICATIONS
FUNCTION RANGE RESOLUTION
ACCURACY ± (% of reading + No. of Least Significant Digit)
FREQUENCY
20 Hz ~ 45 Hz 45 Hz ~ 1 kHz 1 kHz ~ 10 kHz 10 kHz ~ 20 kHz 20 kHz~100 kHz
[5]
TRUE RMS AC
VOLTAGE
[1] [8]
50.000 mV 0.001 mV
1.5+60
0.4+40 0.7+40
3.5+120
500.00 mV 0.01 mV
0.4+25
1000.0 mV 0.1 mV
5.0000 V 0.0001 V
50.000 V 0.001 V
500.00 V 0.01 V
3.5+120
[3]
1000.0 V 0.1 V 0.4+40 0.4+40 1.5+40
[3]
N/A
FUNCTION RANGE RESOLUTION
ACCURACY ± (% of reading + No. of Least Significant Digit)
FREQUENCY
20 Hz ~ 45 Hz 45 Hz ~ 1 kHz 1 kHz ~ 20 kHz 20 kHz~100 kHz
[7]
AC CURRENT
[8]
500.00 µA
[4]
0.01 µA
1.0+20
0.7+20
0.75+20
5.0+80
5000.0 µA 0.1 µA
50.000 mA 0.001 mA
440.00 mA 0.01 mA 1.5+20
5.0000 A 0.0001 A
1.5+20
[6]
3+60,
<3 A/5 kHz
N/A
10.000 A
[5]
0.001 A
[1] Input impedance: Refer to Table A on page 8.
[2] AC mV/V and AC µA/mA/A specications are true RMS AC coupled, valid from 5% to 100% of range. The crest factor may be up to 3 at full scale, up to 5 at half-
scale, except for 1000 mV and 1000 V ranges, where the crest factor is 1.5 at full scale and 3 at half scale.
[3] The input signal is lower than 20,000,000 V-Hz (the product of voltage and frequency).
[4] Input current >35 µArms.
[5] Current can be measured from 2.5 A up to 10 A continuously. An additional 0.5% needs to be added to the specified accuracy if the signal measured is in the range
of 10 A ~ 20 A for 30 seconds maximum. After measuring a current of >10 A, leave the meter to cool down for twice the measuring time used before application of
low current measurement.
[6] Input current < 3 Arms.
[7] The additional error to be added as frequency >20 kHz and signal input <10% of range: 3 counts of LSD per kHz.
[8] Crest factor ≤ 3.0 at full scale, 5.0 at half scale except the 1000 mV and 1000 V ranges where it is 1.5 at full scale, 3.0 at half scale. For non-sinusoidal waveform,
add 0.1% of reading ± 0.3% of range.
0.4+25
0.4+25
0.6+25
0.75+40
1.5+40