Datasheet

Page 8
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U1251B frequency sensitivity during voltage measurement
Frequency sensitivity and trigger level
Input range
3
Minimum sensitivity
(R.M.S. Sine Wave)
Trigger level for DC coupling
(Maximum input for specified
accuracy = 10 x Range or 1000 V)
20 Hz - 100 kHz >100 kHz ~ 200 kHz < 100 kHz >100 kHz ~ 200 kHz
50.000 mV 10 mV 15 mV 10 mV 15 mV
500.00 mV 25 mV 35 mV 60 mV 70 mV
1000.0 mV 40 mV 50 mV 100 mV 150 mV
5.0000 V 0.25 V 0.5 V 0.5 V / 1.25 V (< 100 Hz) 0.6 V
50.000 V 2.5 V 5 V 5 V 6 V
500.00 V 25 V N/A 50 V N/A
1000.0 V 50 V N/A 300 V N/A
U1252B/U1253B frequency sensitivity during voltage measurement
Frequency sensitivity and trigger level
Input range
3
Minimum sensitivity
(RMS sine wave)
Trigger level for DC coupling
(Maximum input for specified
accuracy = 10 x range or 1000 V)
20 Hz ~ 200 kHz >200 kHz ~ 500 kHz < 100 kHz >100 kHz ~ 500 kHz
50.000 mV 10 mV 25 mV 10 mV 25 mV
500.00 mV 70 mV 150 mV 70 mV 150 mV
1000.0 mV 120 mV 300 mV 120 mV 300 mV
5.0000 V 0.3 V 1.2 V 0.6 V 1.5 V
50.000 V 3 V 5 V 6 V 15 V
500.00 V 30 V < 100 kHz N/A 60 V N/A
1000.0 V 50 V < 100 kHz N/A 120 V N/A
Frequency sensitivity during current measurement
Input range Minimum sensitivity (RMS sine wave)
20 Hz ~ 20 Khz
500.00 µA 100 µA
5000.0 µA 250 µA
50.000 mA 10 mA
440.00 mA 25 mA
5.0000 A 1 A
10.000 A 2.5 A
Frequency specifications
5
Range Resolution Accuracy Min. input frequency
1
U1251B/2B U1253B
99.999 Hz 0.001 Hz 0.02%+3
9
0.02%+3
9
1 Hz
999.99 Hz 0.01 Hz 0.02%+3, <600 kHz 0.02%+3, <600 kHz
9.9999 kHz 0.0001 kHz
99.999 kHz 0.001 kHz
999.99 kHz 0.01 kHz
1. The input signal is lower than the product of
20000000 V x Hz (product voltage and frequen-
cy); overload protection: 1000 V.
2. The multimeter will automatically select the
most appropriate range when making frequency
measurements.
3. Maximum input for specified accuracy = 10 x
range or 1000 V.