DM-300 • DM-310 • DM-330 • DM-350
19
Accuracy
Refer to “Specifications” for operating conditions and temperature
coefficient.
Accuracy is specified as follows:
±
(a percentage of the r 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 M
Ω
nominal for 600.0 mV range;
10 M
Ω
nominal for all other
ranges
AC Voltage
Accuracy at
Range
50 Hz to 500 Hz
600.0 mV
1.2% + 0.3 mV
6.000 V
1.0% + 0.003 V
60.00 V
1.0% + 0.03 V
600.0 V
1.0% + 0.3 V
1000 V
2.5% + 6 V
Input Impedance: 10 M
Ω
|| 90 pF
nominal
Ohms
Range
Accuracy
600.0
Ω
0.8% + 0.4
Ω
6.000 k
Ω
0.7% + 0.002 k
Ω
60.00 k
Ω
0.7% + 0.02 k
Ω
600.0 k
Ω
0.7% + 0.2 k
Ω
6.000 M
Ω
0.9% + 0.004 M
Ω
60.00 M
Ω
2.0% + 0.04 M
Ω
600
Ω
with Continuity Beeper
Range
Accuracy
600.0
Ω
0.8% + 0.4
Ω
Continuity Beeper Response:
< 100
µ
s
Open Circuit Voltage:
0.4 VDC typical
Audible Threshold:
Between 10
Ω
and 150
Ω
Diode Tester
Open Circuit
Test Current
Voltage
Accuracy
0.4 mA typical
< 1.6 VDC typical
1.9% + 0.003 V
