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SPECIFICATIONS
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DC VOLTAGE
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Range
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220mV, 2.2V, 22V, 220V, 1000V(GDM-461); 200mV, 2V, 20V, 200V, 600V(GDM-452)
40mV, 400mV, 4V, 40V, 400V, 1000V(GDM-397);
60mV, 600mV, 6V, 60V, 600V, 1000V(GDM-360)
400mV, 4V, 40V, 400V, 1000V(GDM-398)
200mV, 2V, 20V, 200V, 600V(GDM-357)
200mV, 2000mV, 20V, 200V, 250V(GDM-350B)
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Best Accuracy
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±(0.1%rdg + 2 digits) for GDM-461;
±(0.05%rdg + 3 digits) for GDM-452
±(0.5%rdg + 1 digit) for GDM-397/360/398/357;
±(0.5%rdg + 2 digits) for GDM-350B
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Input Impedance
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10 MΩ (3000MΩ for mV range of GDM-461/397/360/398)
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AC VOLTAGE
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Range
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220mV, 2.2V, 22V, 220V, 750V(GDM-461); 200mV, 2V, 20V, 200V, 600V(GDM-452)
40mV, 400mV, 4V, 40V, 400V, 750V(GDM-397); 400mV, 4V, 40V, 400V, 750V(GDM-398)
60mV, 600mV, 6V, 60V, 600V, 750V(GDM-360); 2V, 20V, 200V, 600V(GDM-357)
200V, 250V(GDM-350B)
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Best Accuracy
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±(0.8%rdg + 10 digits) for GDM-461; ±(0.5%rdg + 10 digits) for GDM-452
±(1.0%rdg + 3 digits) for GDM-397/360/398; ±(0.8%rdg + 3 digits) for GDM-357
±(1.2%rdg + 3 digits) for GDM-350B
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Input Impedance
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10 MΩ (3000MΩ for mV range of GDM-461/397/360/398; 4.5MΩ for GDM-350B)
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DC CURRENT
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Range
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220µA, 2200µA, 22mA, 220mA, 10A(GDM-461); 2mA, 20mA, 200mA, 10A(GDM-452)
400µA, 4000µA, 40mA, 400mA, 4A, 10A(GDM-397/398)
600μA, 6000μA, 60mA, 600mA, 6A, 10A(GDM-360)
2mA, 20mA, 200mA, 10A(GDM-357); 2000µA, 20mA, 200mA, 10A(GDM-350B)
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Best Accuracy
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±(0.5%rdg + 10 digits) for GDM-461; ±(0.5%rdg + 5 digits) for GDM-452
±(1.0%rdg + 2 digits) for GDM-397/398/350B; ±(1.0%rdg + 3 digits) for GDM-360
±(0.8%rdg + 1 digit) for GDM-357
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AC CURRENT
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Range
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220µA, 2200µA, 22mA, 220mA, 10A(GDM-461); 2mA, 20mA, 200mA, 10A(GDM-452)
400µA, 4000µA, 40mA, 400mA, 4A, 10A(GDM-397/398)
600μA, 6000μA, 60mA, 600mA, 6A, 10A(GDM-360); 20mA, 200mA, 10A(GDM-357)
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Best Accuracy
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±(0.8%rdg + 10 digits) for GDM-461/452; ±(1.0%+3) for GDM-357
±(1.2%rdg + 5 digits) for GDM-397/360/398
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RESISTANCE
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Range
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220Ω ~ 220MΩ 7 ranges(GDM-461); 200Ω ~ 20MΩ 6 ranges(GDM-452/357/350B)
400Ω ~ 40MΩ 6 ranges(GDM-397/398); 600Ω ~ 60MΩ 6 ranges(GDM-360)
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Best Accuracy
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±(0.5%rdg + 10 digits) for GDM-461; ±(0.3%rdg + 1 digit) for GDM-452
±(1.0%rdg + 2 digits) for GDM-397/360/398/357; ±(0.8%rdg + 5 digits) for GDM-350B
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CAPACITANCE
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Range
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22nF, 220nF, 2.2µF, 22µF, 220µF, 2.2mF, 22mF, 220mF(GDM-461)
20nF, 200nF, 2μF, 20μF(GDM-452); 2nF, 20nF, 200nF, 2μF, 200μF(GDM-357)
40nF, 400nF, 4µF, 40µF, 400µF, 4000µF (GDM-397/360/398)
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Best Accuracy
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±(3.0%rdg + 5 digits) for GDM-461; ±(4.0%rdg + 20 digits) for GDM-452
±(3.0%rdg + 5 digits) for GDM-397/360/398; ±(4.0%+3) for GDM-357
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FREQUENCY
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Range
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10Hz ~ 220MHz(GDM-461); 1Hz ~ 20kHz(GDM-452)
10Hz ~ 10MHz(GDM-397/360/398);
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Best Accuracy
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±(0.01%rdg + 5 digits) for GDM-461; ±(1.5%rdg + 5 digits) for GDM-452
±(0.1%rdg + 4 digits) for GDM-397/360/398
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DIODE TEST
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Open Circuit Voltage
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GDM-461/452/397/360/398/357/350B : 2.8V (Approx.)
GDM-350B : 2.3V (Approx.)
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CONTINUITY BEEPER
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Buzzer sounds if conductance less than 10Ω for GDM-461/397/357/360/398/350B
Buzzer sounds if conductance less than 30Ω for GDM-452
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TEMPERATURE
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Range
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-40ºC ~ 1000ºC
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Best Accuracy
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±(1.2%rdg + 4 digits) for GDM-397; ±(1.0%rdg + 7 digits) for GDM-357
±(1.0%rdg + 3 digits) for GDM-350B
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SPECIAL FUNCTION
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Auto Ranging (GDM-461/397/360); True RMS (GDM-461/360); RS-232C (GDM-461/397/360)
hFE Test (GDM-398/350B); Display Backlight (GDM-397/360/398); EF Function (GDM-398)
Analog Bar (GDM-461/397/360/398); Auto Power Off (GDM-452/397/357/360/398)
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LCD DISPLAY
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22000 counts (GDM-461), 4 1/2 digits (GDM-452), 6000 counts (GDM-360)
3 3/4 digits (GDM-397/398), 3 1/2 digits (GDM-357/350B)
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POWER SOURCE
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Single 9V Battery (6F22)
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DIMENSIONS & WEIGHT
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87(W) x 180(H) x 47(D) mm, Approx. 370g (GDM-461/397/360/398)
91(W) x 186(H) x 39(D) mm, Approx. 300g (GDM-452/357)
72(W) x 137(H) x 35(D) mm, Approx. 200g (GDM-350B)
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Features
The GDM-300/400 Series Hand Held DMM are a compact, high precision, battery operated multimeter series designed to meet most of the daily needs for design engineers as well as service engineers. The GDM-300/400 series design is driven by mobile-oriented features, such as automatic power down to preserve battery life, a large backlight display for crisp viewing, a rotary selector switch and clear-cut push buttons to ease operation. The basic functions match the depth of bench-top multimeters: fuse-protected current input, true RMS for accurate AC measurements, Auto ranging, Duty cycle, and Relative mode. These compact, reliable, and economical devices are ideal for any engineer.
(GDM-452/357/350B)
* 4 1/2 Digits 19999 counts (GDM-452)
* 3 1/2 Digits 1999 counts (GDM-357/350B)
* Manual Ranging
* Continuity Beeper/Diode Test
* Data Hold
* hFE Test (Only GDM-350B)
* Temperature Measurement (Except GDM-452)
* Capacitance (Except GDM-350B)
* Frequency Measurement (Only GDM-452)
(GDM-461/397/360/398)
* 22000 Counts Auto/Manual Ranging (GDM-461)
* 4000 Counts Auto/Manual Ranging (GDM-397/398)
* 6000 Counts Auto/Manual Ranging (GDM-360)
* Capacitance, Frequency Measurement
* Continuity Beeper/Diode Test
* High Energy Fuse for 10A Range
* Data Hold/Relative Mode
* True RMS (GDM-461/360)
* RS232C (GDM-461/397/360)
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