U1281A Datasheet, PDF (13/18 Pages) Keysight Technologies – U1280 Series Handheld Digital Multimeters

13 | Keysight | U1280 Series Handheld Digital Multimeters - Data Sheet
Frequency specification for U1281A / U1282A
Range
99.999 Hz
999.99 Hz
9.9999 kHz
99.999 kHz
999.99 kHz
9.9999 MHz
Resolution
0.001 Hz
0.01 Hz
0.0001 kHz
0.001 kHz
0.01 kHz
0.0001 MHz
Accuracy ± (% of reading +
counts of least significant digit)
0.02 % + 3¹
0.005 % + 3
0.005 % + 3
0.005 % + 3
0.005 % + 3
0.005 % + 3, < 1 MHz
Minimum input frequency
0.5 Hz
Notes
1. The frequency measurement is susceptible to error when measuring low-voltage, low-frequency signals.
Shielding inputs from external noise pickup is critical for minimizing measurement errors. For U1282A only,
turning on LPF (low pass filter) may help to filter out the noise and achieve a stable reading.
U1281A / U1282A sensitivity¹ for voltage measurement
Input range
Maximum input² for
specified accuracy
60 mV
600 mV
6V
60 V
600 V
1000 V
Minimum sensitivity (RMS sine wave)
15 Hz to 100 kHz Typical bandwidth
at full scale
2.5 mV
1 MHz
12 mV
1 MHz
0.25 V
900 kHz
2.5 V
600 kHz
25 V
100 kHz
33 V
100 kHz
Trigger level for DC coupling
15 Hz to 100 kHz Typical bandwidth
at full scale
4.5 mV
1 MHz
15 mV
1 MHz
0.45 V
900 kHz
4.5 V
600 kHz
45 V
100 kHz
50 V
100 kHz
U1281A / U1282A sensitivity¹ for current measurement
Input range
Maximum input² for specified accuracy
60 µA
6 mV
60 mV
600 mV
6A
10 A
Minimum sensitivity (RMS sine wave)
15 Hz to 30 kHz
Typical bandwidth at full scale
38 µA
100 kHz
0.38 mA
100 kHz
3.8 mA
100 kHz
38 mA
100 kHz
0.38 A
100 kHz
1A
100 kHz
Notes
1. The sensitivity is typical performance.
2. Refer to ‘AC Specifications’ for specified accuracy of maximum input.