User guide

Frequency and Duty Cycle
Temperature (DM393)
Frequency Counter Sensitivity
Burden Voltage (A, mA, µA)
E l e c t r omagnetic Compatibility (EMC)
The meters meet EN 61326: 19 9 7 A1: 19 9 8 .
Range Resolution Accuracy Remark
D M 3 9 1 D M 3 9 3
5Hz 0.001Hz
50Hz 0.01Hz
500Hz 0.1Hz Minimum frequency:
5kHz 1Hz 0.05% + 3 0.05% + 3 0.5Hz
50kHz 10Hz
500kHz 100Hz Sensitivity
5MHz 1kHz 5Hz - 1MHz, > 250mV
10MHz 10kHz 1MHz - 10MHz, > 350mV
0.1% to 0.1% 0.5Hz to 500kHz (pulse width > 2µ sec.)
99.9% (0.1% + 0.05% per khz + 1 count) for 5 V input
(Logic signals only)
DC Current
AC Current
Resistance
Open circuit voltage: <1.3 V DC
Continuity
Diode Test
Capacitance
DM391/393-MAN P. 8
Range Resolution Accuracy
DM391 DM393
400µA 0.1µA
4000µA 1µA
40mA 10µA 1.0% + 2 1.0% + 2
400mA 100µA
4A 1mA
10A 10mA 1.5% + 5 1.5% + 5
Range Resolution Accuracy
40 Hz - 400 Hz 400 Hz - 10 kHz
DM391 DM393 D M 3 9 3
400µA 0.1µA
4000µA 1µA
40mA 10µA 1.0% + 5 1.0% + 5 1.5% + 5
400mA 100µA
4A 1mA
10A 10mA 1.5% + 10 1.5% + 10 2.0% + 10
Range Resolution Accuracy
DM391 DM393
400Ω 0.1Ω 1.0% + 5 1.0% + 5
4000Ω 1Ω
40kΩ 10Ω
400kΩ 100Ω 0.5% + 3 0.5% + 3
4MΩ 1kΩ 1.0% + 5 1.0% + 5
10MΩ 10kΩ 1.5% + 10 1.5% + 10
Audible threshold : the beeper sounds if the measured resistance is lower
than 10Ω, and turns off when greater than about 60Ω
Response time : <1 msec.
Range Resolution Test Current Open Circuit Voltage
(Typical)
4V 2% 0.25mA <1.5V DC
Range Resolution Accuracy
DM391 DM393
40nF 10pF
400nF 100pF
4µF 1nF 2.5% + 10 2.5% + 10
40µF 10nF
100µF 100nF
Range Resolution Accuracy
-40˚ to 14˚F 1˚F 3% ± 5˚F
(-40˚ to -10˚C) 1˚C (3% ± 5˚C)
14˚ to 752˚F 1˚F 1% ± 3˚F
(-10˚ to -400˚C) 1˚C (1% ± 3˚C)
752˚ to 2372˚F 1˚F 3% of reading
(400˚ to 1300˚C) 1˚C (3% of reading)
Range Minimum Sensitivity (RMS Sine Wave)
40Hz to 10kHz 10Hz to 20kHz
V
(4V tp 1000V) 500mV 500mV
µA
(400µA to 400mA) > 15% F.S. of AC range Not Specified
mA
(40mA to 400mA) > 15% F.S. of AC range Not Specified
A
(4.0A to 10A) > 15% F.S. of AC range Not Specified
Function Range Burden Voltage (typical)
400µA 150µV/µA
4000µA 150µV/µA
mA/µA 40mA 3.3mV/mA
400mA 3.3mV/mA
10A 4A 0.03V/A
10A 0.03V/A