Mastech MS2108A - Page 8

test leads contact the circuit. This is normal because the meter is
highly sensitive. When the test leads contact the circuit, the true
reading will be shown.
3.2.4 AC Voltage
Range Resolution Accuracy
4V 0.001V
± (0.8% of rdg + 3digits)
40V 0.01V
400V 0.1V
750 1V ± (1% of rdg + 4digits)
- Input impedance: 10MΩ
- Max. input voltage: 750V rms AC
- Frequency range: 40 to 400Hz
- Response: average value
3.2.5 Frequency
3.2.5.1 By A range ( from current clamp):
Range Resolution Accuracy
10Hz 0.01Hz
± （ 1.5% of rdg + 5 digits ）
1kHz 0.001KHz
>1kHz 0.001KHz
- Measurement range: 10 ~ 1kHz
- Input current range: ≥4A rms AC (higher input current at higher
frequency)
- Max. Input current: 400A rms AC
3.2.5.2 By ACV range:
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Range Resolution Accuracy
10Hz 0.01Hz
1kHz 0.001kHz ± （ 1.5% of rdg + 5 digits ）
10kHz 0.01kHz
>10kHz 0.01kHz Take it only as referance
- Measurement range: 10 ~ 10kHz
- Input voltage range: ≥ 0.6V rms AC (higher input voltage at
higher frequency)
- Input impedance: 10MΩ
- Max. input voltage: 750V rms AC
3.2.5.3 By Hz/DUTY range
Range Resolution Accuracy
9.999Hz 0.001Hz
± （ 0.5% of rdg+3 digits ）
99.99Hz 0.01Hz
999.9Hz 0.1Hz
9.999KHz 0.001 KHz
99.99KHz 0.01 KHz
999.9KHz 0.1 KHz
9.999MHz 0.001MHz
- Overload protection: 250V dc or 250V ac rms.
- Input Voltage range: 200mV-10V ac rms
3.2.6 Duty Cycle
Range Resolution Accuracy
0.1% - 99% 0.1% ± 3.0%
3.2.6.1 By A range ( from current clamp):
- Frequency response: 10 ~1kHz
- Input current range: ≥4A rms AC
- Max. input current: 400A
3.2.6.2 By ACV range:
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