Greenlee DM-300 Manuel D'instructions page 19

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Accuracy
Refer to "Specifications" for operating conditions and temperature
coefficient.
Accuracy is specified as follows: ± (a percentage of the reading + a fixed
amount) at 23 °C ± 5 °C (73.4 °F ± 9 °F), 0% to 75% relative humidity.
True RMS readings: DM-300, DM-330, and DM-350 AC accuracies are
specified from 5% (10% for 600.0 mV range) to 100% of the range unless
otherwise specified. Frequency must be within the specified bandwidth for
non-sinusoidal waveforms. Crest factors are as follows:
• Crest factor < 2:1 at full scale
• Crest factor < 4:1 at half scale
DC Voltage
Range Accuracy
600.0 mV 0.7% + 0.2 mV
6.000 V 0.5% + 0.003 V
60.00 V 0.5% + 0.03 V
600.0 V 0.7% + 0.2 V
1000 V 1.2% + 6 V
Input Impedance: 1000 MΩ
nominal for 600.0 mV range;
10 MΩ nominal for all other
ranges
Ohms
Range Accuracy
600.0 Ω 0.8% + 0.4 Ω
6.000 kΩ 0.7% + 0.002 kΩ
60.00 kΩ 0.7% + 0.02 kΩ
600.0 kΩ 0.7% + 0.2 kΩ
6.000 MΩ 0.9% + 0.004 MΩ
60.00 MΩ 2.0% + 0.04 MΩ
Diode Tester
Test Current
0.4 mA typical
DM-300 • DM-310 • DM-330 • DM-350
AC Voltage
Range
600.0 mV
6.000 V
60.00 V
600.0 V
1000 V
Input Impedance: 10 MΩ || 90 pF
600 Ω with Continuity Beeper
Range
600.0 Ω
Continuity Beeper Response:
Open Circuit Voltage:
Audible Threshold:
Open Circuit
Voltage
< 1.6 VDC typical
Accuracy at
50 Hz to 500 Hz
1.2% + 0.3 mV
1.0% + 0.003 V
1.0% + 0.03 V
1.0% + 0.3 V
2.5% + 6 V
nominal
Accuracy
0.8% + 0.4 Ω
< 100 µs
0.4 VDC typical
Between 10 Ω and 150 Ω
Accuracy
1.9% + 0.003 V
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