GW Instek GDM-394 - Instek 3 3/4 Digits Hand-Held DMM
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.
- 3999 Counts Auto/Manual Ranging
- Capacitance, Frequency Measurement
- Continuity Beeper/Diode Test
- High Energy Fuse for 10A Range
- Data Hold/Relative Mode
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DC VOLTAGE |
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Range |
220mV, 2.2V, 22V, 220V, 1000V(GDM-461); 200mV, 2V, 20V, 200V, 1000V(GDM-451/356) 40mV, 400mV, 4V, 40V, 400V, 1000V(GDM-397); 400mV, 4V, 40V, 400V, 1000V(GDM-394/396) 400mV, 4V, 40V, 400V, 600V(GDM-395); 200mV, 2000mV, 20V, 200V, 250V(GDM-350B) |
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Best Accuracy |
±(0.1%rdg + 2 digits) for GDM-461; ±(0.05%rdg + 3 digits) for GDM-451 ±(0.5%rdg + 1 digit) for GDM-397/356; ±(0.8%rdg + 1 digit) for GDM-394/396 ±(0.7%rdg + 3 digits) for GDM-395; ±(0.5%rdg + 2 digits) for GDM-350B |
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Input Impedance |
10 MΩ (3000MΩ for mV range of GDM-461/397) |
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AC VOLTAGE |
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Range |
220mV, 2.2V, 22V, 220V, 750V(GDM-461); 2V, 20V, 200V, 750V(GDM-451/356) 40mV, 400mV, 4V, 40V, 400V, 750V(GDM-397); 4V, 40V, 400V, 750V(GDM-394/396) 4V, 40V, 400V, 600V(GDM-395); 200V, 250V(GDM-350B) |
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Best Accuracy |
±(0.8%rdg + 10 digits) for GDM-461; ±(0.5%rdg + 10 digits) for GDM-451 ±(1.0%rdg + 3 digits) for GDM-397; ±(1.0%rdg + 5 digits) for GDM-394/396 ±(0.8%rdg + 3 digits) for GDM-356; ±(2.3%rdg + 5 digits) for GDM-395 ±(1.2%rdg + 3 digits) for GDM-350B |
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Input Impedance |
10 MΩ (3000MΩ for mV range of GDM-461/397; 4.5MΩ for GDM-350B; 2MΩ for GDM-451) |
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DC CURRENT |
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Range |
220µA, 2200µA, 22mA, 220mA, 10A(GDM-461); 2mA, 20mA, 200mA, 20A(GDM-451) 400µA, 4000µA, 40mA, 400mA, 4A,10A(GDM-397); 2000µA, 20mA, 200mA, 10A(GDM-350B) 400µA, 4mA, 40mA, 400mA, 4A,10A(GDM-394/396); 20mA, 200mA, 20A(GDM-356) |
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Best Accuracy |
±(0.5%rdg + 10 digits) for GDM-461; ±(0.5%rdg + 5 digits) for GDM-451 ±(1.0%rdg + 2 digits) for GDM-397/394/396/350B; ±(0.8%rdg + 1 digit) for GDM-356 |
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AC CURRENT |
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Range |
220µA, 2200µA, 22mA, 220mA, 10A(GDM-461); 20mA, 200mA, 20A(GDM-451/356) 400µA, 4000µA, 40mA, 400mA, 4A,10A(GDM-397) 400µA, 4mA, 40mA, 400mA, 4A,10A(GDM-394/396) |
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Best Accuracy |
±(0.8%rdg + 10 digits) for GDM-461/451; ±(1.2%rdg + 5 digits) for GDM-397 ±(1.5%rdg + 5 digits) for GDM-394/396; ±(1.0%rdg + 3 digits) for GDM-356 |
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RESISTANCE |
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Range |
220Ω ~ 220MΩ 7 ranges(GDM-461); 200Ω ~ 200MΩ 7 ranges(GDM-451/356) 400Ω ~ 40MΩ 6 ranges(GDM-394/395/396/397); 200Ω ~ 20MΩ 6 ranges(GDM-350B) |
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Best Accuracy |
±(0.5%rdg + 10 digits) for GDM-461; ±(0.3%rdg + 1 digit) for GDM-451 ±(1.0%rdg + 2 digits) for GDM-394/396/397; ±(2.0%rdg + 5 digits) for GDM-395 ±(0.8%rdg + 1 digit) for GDM-356; ±(0.8%rdg + 5 digits) for GDM-350B |
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CONTINUITY BEEPER |
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Buzzer sounds if conductance less than 70Ω for GDM-451/394/395/396/356 Buzzer sounds if conductance less than 10Ω for GDM-461/397/350B |
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DIODE TEST |
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Open Circuit Voltage |
GDM-461/451/397/356 : 2.8V(Approx.); GDM-394/395/396 : 1.48V(Approx.) GDM-350B : 2.3V(Approx.) |
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CAPACITANCE |
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Range |
22nF, 220nF, 2.2µF, 22µF, 220µF, 2.2mF, 22mF, 220mF(GDM-461) 40nF, 400nF, 4µF, 40µF, 400µF, 4000µF(GDM-397); 2nF, 20nF, 2µF, 20µF(GDM-451) 40nF, 400nF, 4µF, 40µF, 100µF(GDM-394/395/396); 20nF, 200nF, 2µF, 100µF(GDM-356) |
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Best Accuracy |
±(3.0%rdg + 5 digits) for GDM-461/397/396/394; ±(3.0%rdg + 40 digits) for GDM-451 ±(5.0%rdg + 10 digits) for GDM-395; ±(4.0%rdg + 3 digits) for GDM-356 |
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FREQUENCY |
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Range |
10Hz ~ 220MHz(GDM-461); 1Hz ~ 20kHz(GDM-451/356) 10Hz ~ 10MHz(GDM-394/396/397); 1Hz ~ 99.9kHz(GDM-395) |
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Best Accuracy |
±(0.01%rdg + 5 digits) for GDM-461; ±(1.5%rdg + 5 digits) for GDM-451/356 ±(0.1%rdg + 3 digits) for GDM-394/396; ±(0.1%rdg + 4 digits) for GDM-397 ±(0.7%rdg + 3 digits) for GDM-395 |
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TEMPERATURE |
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Range |
-40ºC ~ 1000ºC |
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Best Accuracy |
±(1.0%rdg + 30 digits) for GDM-451; ±(1.0%rdg + 7 digits) for GDM-396/356 ±(1.2%rdg + 4 digits) for GDM-397; ±(1.0%rdg + 3 digits) for GDM-350B |
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SPECIAL FUNCTION |
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Auto Ranging(GDM-461/397/396/395/394); True RMS(GDM-461/396); RS-232C(GDM-461/397/396) hFE Test(GDM-461/350B); Display Backlight(GDM-451/397/396/394/356); Analogue Bar(GDM-461/397) |
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LCD DISPLAY |
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22000 counts(GDM-461), 4 1/2 digits(GDM-451), 3 3/4 digits(GDM-397/396/395/394), 3 1/2 digits(GDM-356/350B) |
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POWER SOURCE |
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Single 9V Battery (6F22), Cell Battery for GDM-395 (CR2032) |
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DIMENSIONS & WEIGHT |
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87(W) x 180(H) x 47(D) mm, Approx. 370g (GDM-461/397) 85(W) x 177(H) x 40(D) mm, Approx. 330g (GDM-396/394) 80(W) x 165(H) x 38.3(D) mm, Approx. 275g (GDM-451/356) 72(W) x 137(H) x 35(D) mm, Approx. 200g (GDM-350B) 56(W) x 110(H) x 11.5(D) mm, Approx. 97g (GDM-395) |
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