4 1/2 & 3 1/2 DIGITAL MULTIMETER
In terms of cost/performance ratio, the GDM-8145/8135 Series yield one of the best choices among
the DMMs in today's market. The series are equipped with 4 1/2 (GDM-8145) or 3 1/2 (GDM-8135)digits,
0.5" LED display in a distinctive red color. Measurement items include DC Voltage/Current, AC Voltage/
Current with true RMS (GDM-8145), Resistance, Diode Test, and Continuity with Beeper (GDM-8135).
The true RMS AC and AC+DC response give accurate measurements for equivalent DC energy regardless
of the waveform shape. Small voltage offsets are canceled by the auto-zero circuit, and protection
mechanism is available for the entire measurement range. All these features provide users with robust
measurement experience.
GDM-8145 (4 1/2 Digits)
SPECIFICATIONS
GDM-8145
GDM-8135
DC VOLTAGE
200mV, 2V, 20V, 200V, 1000V 5ranges.
Range
200mV, 2V, 20V, 200V, 1000V 5 ranges
_
+
(0.03% rdg + 4 digits)
_
+
Accuracy
(0.1% rdg + 1 digit)
10M
W
Input Impedance
10M
W
AC VOLTAGE
200mV, 2V, 20V, 200V, 1000V 5ranges
200mV ~ 20V 4 ranges
Range
200mV, 2V, 20V, 200V, 1000V 5 ranges
200mV ~ 20V 3 ranges :
Accuracy
_
+
40Hz ~ 1kHz (0.5% rdg + 1 digit)
_
20Hz ~ 45Hz (1%rdg + 15 digits)
+
_
+
1kHz ~ 10kHz (1% rdg + 1 digit)
_
45Hz ~ 2kHz (0.5% rdg + 15 digits)
+
_
+
10kHz ~ 20kHz (2% rdg + 1 digit)
_
2kHz ~ 10kHz (1% rdg + 15 digits)
+
_
10kHz ~ 20kHz (2%rdg + 30digits)
+
20kHz ~ 40kHz (5% rdg + 1 digit)
_
+
_
+
200V range : 40Hz ~ 1kHz (0.5% rdg + 1 digit);
_
20kHz ~ 50kHz (5% rdg + 30 digits)
+
_
+
_
1kHz ~ 10kHz+(1% rdg + 1 digit)
200V~1000V range : 45Hz ~ 1kHz
_
+(0.5% rdg + 1 digit)
(0.5%rdg + 15digits)
1000V range : 40Hz ~ 1kHz
GDM-8135 (3 1/2 Digits)
Input Impedance
DC CURRENT
10M
10M
W
W
200 A, 2mA, 20mA, 200mA, 2000mA, 20A 6 ranges
Range
200 A, 2mA, 20mA, 200mA, 2A, 20A 6 ranges
_
+
200 A ~ 200mA 4 ranges (0.2% rdg + 2 digits)
_
+
200 A ~ 200mA 4 ranges : (0.2% rdg + 1 digit)
Accuracy
_
2000mA ~ 20A 2 ranges (0.3% rdg + 2 digits)
+
_
+
(0.5% rdg + 1 digit)
2A ~ 20A 2 ranges :
AC CURRENT
FEATURES
200 A, 2mA, 20mA, 200mA, 2000mA, 20 A 6 ranges
200 A ~ 200mA 4 ranges
Range
200 A, 2mA, 20mA, 200mA, 2A, 20A 6 ranges
200 A ~ 200mA 4 ranges
* Vast Measuring Functions : AC/DC Voltage,
AC/DC Current, Resistance and Diode Test
* Continuity Beeper (GDM-8135)
Accuracy
_
+
40Hz ~ 1kHz (0.5% rdg + 1 digit)
_
45Hz ~ 2kHz (0.5% rdg+ 15 digits)
+
_
2kHz ~ 10kHz (1% rdg + 15 digits)
+
_
1kHz ~ 10kHz (1% rdg + 1 digit)
+
* Large 0.5" Red LED Display
_
+
10kHz ~ 20kHz (2% rdg + 1 digit)
_
10kHz ~ 20kHz (2% rdg + 15 digits)
+
2000mA ~ 20A 2 ranges
_
2A ~ 20A 2 ranges, 40Hz ~ 2kHz (1% rdg + 2 digits)
+
* High Resolution 10 V, 10nA and 10m
* All Range with Protection Circuit
* 0.03% DCV Accuracy (GDM-8145),
0.1% DCV Accuracy (GDM-8135)
* Auto Zero Circuit
_
45Hz ~ 2kHz (0.5% rdg + 15 digits)
+
RESISTANCE
Range
200
W
, 2k, 20k, 200k , 2M , 20M
W
W
W
6 ranges.
200
200
2k
W
W
, 2k
W
, 20k
_
+(0.1%rdg + 4 digits)
W, 200kW, 2000k , 20MW 6 ranges
W
_
+
W 5ranges : (0.2% rdg + 1 digit)
Accuracy
200 ~ 2M
W
:
_
+
W
range : (0.5% rdg + 1 digit)
20M
_
W
+
~ 200k : (0.1%rdg + 2 digits)
W
* 20A High Current Range
_
2000k ~ 20M : (0.25%rdg + 2 digits)
+
* 1000V High Voltage Range
DIODE TEST
* AC or AC + DC True RMS (GDM-8145)
Test Current
Open Voltage
Max. 1 mA
Max. 13V
Max. 1 mA
Max. 13V
CONTINUITY BEEPER
Description
Test Current
Open Voltage
Buzzer sounds if conductance < 10
Max. 1 mA
Max. 13V
DISPLAY
GTL-107A Test Lead
0.5" LED display
POWER SOURCE
For: GDM-8034,GDM-8135,GDM-8145
_
+
AC 100V/120V/220V/230V 10%, 50/60Hz
DIMENSIONS & WEIGHT
245(W) x 95(H) x 280(D) mm, Approx. 2kg
ORDERING INFORMATION
GDM-8145
4 1/2 Digits True RMS Digital Multimeter
GDM-8135 3 1/2 Digits Digital Multimeter
ACCESSORIES :
User manual x 1, Power cord x 1, Test leadGTL-107A x 1
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