GDM 400 & GDM 300
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Features
- <<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 (GDM-350B)
- * Temperature Measurement (GDM-357/350B)
- * Capacitance (GDM-452/357)
- * Frequency Measurement (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)
DESCRIPTION
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.
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SELECTION GUIDE |
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NEW |
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NEW |
NEW |
NEW |
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MODEL |
GDM-461 |
GDM-452 |
GDM-397 |
GDM-360 |
GDM-398 |
GDM-357 |
GDM-350B |
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Max. Display |
22000 |
19999 |
4000 |
6000 |
4000 |
1999 |
1999 |
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Auto Ranging |
√ |
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√ |
√ |
√ |
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Analog Bar |
√ |
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√ |
√ |
√ |
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True RMS |
√ |
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√ |
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Display Backlight |
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√ |
√ |
√ |
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Fused 10A Range |
√ |
√ |
√ |
√ |
√ |
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√ |
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Auto Power off |
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√ |
√ |
√ |
√ |
√ |
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DC Voltage |
1000V |
600V |
1000V |
1000V |
1000V |
600V |
250V |
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AC Voltage |
750V |
600V |
750V |
750V |
750V |
600V |
250V |
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DC Current |
10A |
10A |
10A |
10A |
10A |
10A |
10A |
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AC Current |
10A |
10A |
10A |
10A |
10A |
10A |
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Resistance |
220MΩ |
20MΩ |
40MΩ |
60MΩ |
40MΩ |
20MΩ |
20MΩ |
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Capacitance |
220mF |
20µF |
4000µF |
4000µF |
4000µF |
200µF |
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Frequency |
220MHz |
20kHz |
10MHz |
10MHz |
10MHz |
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Diode |
√ |
√ |
√ |
√ |
√ |
√ |
√ |
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Continuity |
√ |
√ |
√ |
√ |
√ |
√ |
√ |
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Temperature |
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|
√ |
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√ |
√ |
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Duty Cycle(%) |
√ |
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√ |
√ |
√ |
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Transistor (hFE) |
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√ |
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√ |
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EF Function |
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√ |
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REL |
√ |
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√ |
√ |
√ |
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Data Hold |
√ |
√ |
√ |
√ |
√ |
√ |
√ |
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Peak Hold |
√ |
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MAX MIN |
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√ |
√ |
√ |
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RS232C |
√ |
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√ |
√ |
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FEATURES
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SPECIFICATIONS |
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DC VOLTAGE |
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Range |
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 |
±(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 |
10 MΩ (3000MΩ for mV range of GDM-461/397/360/398) |
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AC VOLTAGE |
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Range |
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 |
±(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 |
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 |
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 |
±(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 |
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 |
±(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 |
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 |
±(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 |
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 |
±(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 |
10Hz ~ 220MHz(GDM-461); 1Hz ~ 20kHz(GDM-452) 10Hz ~ 10MHz(GDM-397/360/398); |
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Best Accuracy |
±(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 |
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 |
-40ºC ~ 1000ºC |
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Best Accuracy |
±(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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