GDM-395
GDM-394/396
GDM-451/356/350B
Hand-Held Digital Multimeter
GDM-356
GDM-451 FEATURES
GDM-451
GDM-461/397/396/395/394
ACCESSORIES :
DIMENSIONS & WEIGHT
User manual x 1 , Test leads , Battery
SPECIFICATIONS
FREE DOWNLOAD
The GDM-300/400 Series Hand Held DMM are a compact, high precision, battery operated multimeter
series designed to meet of service engineers. The GDM-300/400 Series design is driven by mobile-
oriented features: automatic power off to preserve battery life, a large backlight display for crisp viewing,
a rotary selector and push buttons to ease operation, and temperature measurement for outdoor use.
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.
BASIC T & M INSTRUMENTS
BASIC T & M INSTRUMENTS
E17 E18
Good Will Instrument Co., Ltd.
Simply Reliable
Simply Reliable Good Will Instrument Co., Ltd.
ORDERING INFORMATION
GDM-350B
GDM-461 GDM-397
GDM-461
GDM-451
GDM-397
GDM-396
GDM-394
GDM-395
GDM-356
GDM-350B
22000 Counts Hand-Held DMM with True RMS Measurement and RS-232C Interface
4 1/2 Digits Hand-Held DMM
3 3/4 Digits Hand-Held DMM with RS-232C Interface
3 3/4 Digits Hand-Held DMM with True RMS Measurement and RS-232C Interface
3 3/4 Digits Hand-Held DMM
3 3/4 Digits Slim-Pocket DMM
3 1/2 Digits Hand-Held DMM
3 1/2 Digits Hand-Held DMM
GDM-461 PC Software
GDM-397 PC Software
GDM-396 PC Software
PC Software; Remote software (RS-232C/USB)
PC Software; Remote software (RS-232C/USB)
PC Software; Remote software (RS-232C)
* 4 1/2 Digits Manual Ranging
* Temperature Measurement
* Capacitance, Frequency Measurement
* Data Hold
* Auto Power Off
GDM-461 FEATURES
* 22000 Counts Auto/Manual Ranging
* 46 Segments Analogue Bar
*
* Data/Peak Hold and Relative Mode
* True RMS/RS-232C
GDM-397 FEATURES
* Auto/Manual Ranging
* 41 Segments Analogue Bar
* MAX/MIN, Data Hold and Relative Mode
* RS-232C
* Auto Power Off
3 3/4 Digits
GDM-396/394 FEATURES
GDM-395 FEATURES
* 3999 Counts Auto/Manual Ranging
* Slim Pocket Digital Multimeter
* Continuity Beeper/Diode Test
* Capacitance, Frequency Measurement
* Data Hold and Relative Mode
* Auto Power Off
* 3999 Counts Auto/Manual Ranging
* Continuity Beeper/Diode Test
* Capacitance, Frequency Measurement
* Data Hold and Relative Mode
* True RMS/RS-232C (GDM-396 Only)
GDM-356 FEATURES
GDM-350B FEATURES
* 3 1/2 Digits Manual Ranging
* Temperature Measurement
* Continuity Beeper/Diode Test
* hFE Test
* Data Hold
* 3 1/2 Digits Manual Ranging
* Temperature Measurement
* Capacitance, Frequency Measurement
* Data Hold
* Auto Power Off
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)
DC VOLTAGE
AC VOLTAGE
DC CURRENT
AC CURRENT
RESISTANCE
Range
Best Accuracy
Input Impedance
Range
Best Accuracy
Input Impedance
Range
Best Accuracy
Range
Best Accuracy
Range
CONTINUITY BEEPER
DIODE TEST
Open Circuit
Voltage
Best Accuracy
CAPACITANCE
FREQUENCY
TEMPERATURE
SPECIAL FUNCTION
Range
Best Accuracy
Range
Best Accuracy
Range
Best Accuracy
POWER SOURCE
-40℃~1000℃
SPECIFICATIONS
Single 9V Battery (6F22), Cell Battery for GDM-395 (CR2032)
LCD DISPLAY
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)
Auto Ranging(GDM-461/397/396/395/394); True RMS(GDM-461/396); RS-232C(GDM-461/397/396)
hFE Test(GDM-350B); Display Backlight(GDM-451/397/396/394/356); Analogue Bar(GDM-461/397)
±(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
±(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
10Hz ~ 220MHz (GDM-461); 1Hz ~ 20kHz (GDM-451/356)
10Hz ~ 10MHz (GDM-394/396/397); 1Hz ~ 99.9kHz (GDM-395)
±(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
22nF, 220nF, 2.2 F, 22 F, 220 F, 2.2mF, 22mF, 220mF(GDM-461)μ μ μ
40nF, 400nF, 4 F, 40 F, 400 F, 4000 F(GDM-397); 2nF, 20nF, 2 F, 20 F(GDM-451)μ μ μ μ μ μ
40nF, 400nF, 4 F, 40 F, 100 F(GDM-394/395/396); 20nF, 200nF, 2 F, 100 F(GDM-356)μ μ μ μ μ
GDM-461/451/397/356 : 2.8V(Approx.); GDM-394/395/396 : 1.48V(Approx.)
GDM-350B : 2.3V(Approx.)
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
±(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
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)
±(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
220 A, 2200 A, 22mA, 220mA, 10A(GDM-461); 20mA, 200mA, 20A(GDM-451/356)
400 A, 4000 A, 40mA, 400mA, 4A,10A(GDM-397)
400 A, 4mA, 40mA, 400mA, 4A,10A(GDM-394/396)
μ μ
μ μ
μ
±(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
220 A, 2200 A, 22mA, 220mA, 10A(GDM-461); 2mA, 20mA, 200mA, 20A(GDM-451)μ μ
400 A, 4000 A, 40mA, 400mA, 4A,10A(GDM-397); 2000 A, 20mA, 200mA, 10A(GDM-350B)μ μ μ
400 A, 4mA, 40mA, 400mA, 4A,10A(GDM-394/396); 20mA, 200mA, 20A(GDM-356)μ
10MΩ(3000MΩ for mV range of GDM-461/397;4.5MΩ for GDM-350B;2MΩ for GDM-451)
±(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
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)
10MΩ (3000MΩ for mV range of GDM-461/397)
±(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
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)
SELECTION GUIDE
MODEL GDM-461 GDM-451 GDM-397 GDM-396 GDM-394 GDM-395 GDM-356 GDM-350B
Max. Display
Auto Ranging
Analogue Bar
True RMS
Display Backlight
Fused 10A Range
Auto Power off
DC Voltage
AC Voltage
DC Current
AC Current
Resistance
Capacitance
Frequency
Diode
Continuity
Temperature
Duty Cycle (%)
Transistor (hFE)
REL
Data Hold
Peak Hold
MAX MIN
RS-232C
1000V 1000V 1000V 1000V 1000V 600V 1000V 250V
22000 19999 4000 3999 3999 3999 1999 1999
750V 750V 750V 750V 750V 600V 750V 250V
10A 20A 10A 10A 10A 20A 10A
10A 20A 10A 10A 10A 20A
220MΩ200MΩ40MΩ40MΩ40MΩ40MΩ200MΩ20MΩ
220mF 20 Fμ4000 Fμ100 Fμ100 Fμ100 Fμ100 Fμ
220MHz 20kHz 10MHz 10MHz 10MHz 99.9kHz 20kHz
