Velleman DVM990BL - Manual (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.