Velleman DVM990BL Operations Instructions download pdf (Page 6)

DVM990BL VELLEMAN 5

3.2. ELECTRICAL SPECIFICATIONS

Ambient temperature: 23 ± 5°C

Relative humidity: < 70%

3.2.1. DC Voltage

Range Resolution Accuracy (% reading + digits)

200mV 0.1mV ± (0.5% of rdg + 1 digit)

2V 1mV ± (0.5% of rdg + 3 digits)

20V 10mV ± (0.5% of rdg + 3 digits)

200V 100mV ± (0.5% of rdg + 3 digits)

1000V 1V ± (0.8% of rdg + 3 digits)

Input impedance: 10 Mohm

Overload protection: 200mV range: 250V DC or rms AC

2V-1000V ranges: 1000V DC or 700V rms AC

NOTE:

At low voltage range, the meter will show an unsteady reading when

the test leads are not connected to the circuit. This is normal because

the meter is very sensitive. When the test leads touch the circuit, you

get the true reading.

3.2.21. AC Voltage

Range Resolution Accuracy (% reading + digits)

200mV 0.1mV ± (1.2% of rdg + 5 digits)

2V 1mV ± (1.0% of rdg + 5 digits)

20V 10mV ± (1.0% of rdg + 5 digits)

200V 100mV ± (1.0% of rdg + 5 digits)

1000V 1V ± (1.2% of rdg + 5 digits)

Input impedance: 10 Mohm

Overload protection: 200mV range: 250V DC or rms AC

2V-1000V ranges: 1000V DC or 700V rms AC

Frequency range: 40 to 400Hz

Test on 60Hz/50Hz

Response: average, calibrated in rms of sine wave

NOTE:

At low voltage range, the meter will show an unsteady reading when

the test leads are not connected to the circuit. This is normal because

the meter is very sensitive. When the test leads touch the circuit, you

get the true reading.

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Velleman DVM990BL Operations Instructions Page 6