Duratool D03305 User manual

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DIGITAL MULTIMETER
Model: D03305

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IMPORTANT SAFETY INFORMATION
Please read these instructions carefully before use and retain for future reference.
• Check the test leads, probes and case insulation before using. If you nd any
breakage or abnormality, or you consider the device is broken, stop using the
device immediately.
• When using the test probes, keep your ngers behind the nger protection
ring.
• Do not use the meter with the back cover open.
• Select appropriate test range for measurements.
• Ensure all inputs are less than the range selected otherwise it may cause
electrical shock or meter damage.
• Do not change the range selector position during voltage or current
measurements.
• Do not apply a voltage exceeding the marked voltage between COM terminal
and ground.
• Take caution when working voltages are above 60V DC or 30V AC rms.
• Do not connect the meter to voltage signals when the range selector is on
current, resistance, diode or continuity range.
• When measuring current, each single measurement should be shorter than 10
seconds.
• When a measurement has been completed, disconnect the testing probes
from the circuit under test.
• Replace the batteries as soon as the low battery indicator appears on the
display.
• Remove dead batteries from the meter or if it is not going to be used for a long
time.
• Never mix old and new batteries together, or different types of batteries.
• Never dispose of batteries in a re, or attempt to recharge ordinary batteries.
• Before replacing the battery, turn off the meter and disconnect all the test
probes.
• To prolong battery life turn off the meter after use.

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DC VOLTAGE
LCD
Rotary
Range
Selector
5A Jack
VΩmA Jack
COM Jack
hFE Socket
Range Resolution Accuracy
200mV 100µV ±(0.5% of rdg +3D)
2000mV 1mV
±(0.8% of rdg +5D)20V 10mV
200V 100mV
600V 1V ±(1.0% of rdg +5D)
• OVERLOAD PROTECTION: 220V rms AC for 200mV range and 600V DC or
600V rms for all ranges.
OVERVIEW

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AC VOLTAGE
CONTINUITY
DC CURRENT
Range Resolution Accuracy
200V 100mV
±(2.0% of rdg +10D)
600V 1V
Range Description
Built in buzzer sounds if resistance is less
than 30±20Ω
• RESPONSE: Average responding, calibrated in rms of a sine wave.
• FREQUENCY RANGE: 45Hz ~ 450Hz.
• OVERLOAD PROTECTION: 1000V DC or 750V rms for all ranges.
• OVERLOAD PROTECTION: 15 seconds maximum 220V RMS.
• OVERLOAD PROTECTION: F0.5A/500V and F5A/250V fuse.
• MEASURING VOLTAGE DROP: 200mV.
Range Resolution Accuracy
2000µA 1µA
±(1.8% of rdg +2D)
20mA 10µA
200mA 100µA ±(2.0% of rdg +2D)
5A 10mA ±(2.0% of rdg +10D)

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RESISTANCE
OPERATION
• MAXIMUM OPEN CIRCUIT VOLTAGE: 3V.
• OVERLOAD PROTECTION: 15 seconds maximum 220Vrms.
Range Resolution Accuracy
200Ω0.1Ω±(1.0% of rdg +10D)
2000Ω1Ω
±(1.0% of rdg +4D)
20kΩ10kΩ
200kΩ100kΩ
2000kΩ1kΩ
DC & AC VOLTAGE MEASUREMENT
• Connect red test lead to “VΩmA” jack, Black lead to “COM” jack.
• Set RANGE switch to desired VOLTAGE position, if the voltage to be
measured is not known beforehand, set switch to the highest range and
reduce it until satisfactory reading is obtained.
• Connect test leads to device or circuit being measured.
• Turn on power of the device or circuit being measured voltage value will
appear on Digital Display along with the voltage polarity.
DC CURRENT MEASUREMENT
• Red lead to “VΩmA”. Black lead to “COM” (for measurements between 200mA
and 5A connect red lead to “5A” jack with fully depressed).
• Set RANGE switches to desired DCA position.
• Open the circuit to be measured, and connect test leads IN SERIES with the
load in with current is to measure.
• Read current value on Digital Display.
• Additionally, “10A” function is designed for intermittent use only. Maximum
contact time of the test leads with the circuit is 15 seconds, with a minimum
intermission time of 15 minutes between tests.

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RESISTANCE MEASUREMENT
• Red lead to “VΩmA”. Black lead to “COM”.
• Set RANGE switch to desired Ω position.
• If the resistance being measured is connected to a circuit, turn off power and
discharge all capacitors before measurement.
• Connect test leads to circuit being measured.
• Read resistance value on the display.
DIODE MEASUREMENT
• Red lead to “VΩmA”, Black lead to “COM”.
• Set RANGE switch to “ ” position.
• Connect the red test lead to the anode of the diode to be measured and black
test lead to cathode.
• The forward voltage drop in mV will be displayed. If the diode is reversed,
gure “1” will be shown.
TRANSISTOR hFE MEASUREMENT
• Set RANGE switch to the hFE position.
• Determine whether the transistor is PNP of NPN type and locate the Emitter,
Base and Collector leads. Insert the leads into the correct pins of the hFE
socket.
• The meter will display the approximate hFE value at the condition of base
current 10μA and VCE2.8V.
AUDIBLE CONTINUITY TEST
• Red lead to “VΩmA”, Black lead to “COM”.
• RANGE switch to “ ” position.
• Connect test leads to two points of circuit to be tested. If the resistance is
lower than 30Ω ± 20Ω, the buzzer will sound.
CABLE TEST OPERATION For example：test of double-twisted cables.
• Put cables into both main tester and remote tester.
• The LEDs of the main tester will turn on sequentially from 1 to G.
Main Tester: 1-2-3-4-5-6-7-8-G
Remote Tester: 1-2-3-4-5-6-7-8-G (RJ45)
1-2-3-4-5-6 (RJ11)
Fault description:
• The following are abnormal connections:
• If one cable for example cable No.3 is open circuit, the two No.3 LEDs of the
main tester and remote tester will not turn on.

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• If several cables are not connected, their respective LEDs will not light.
• If less than two cables are connected, none of the LEDs will light.
• If two ends of a cable is crossed over, for example No.2 and No.4, then
displays on:
Main Tester: 1-2-3-4-5-6-7-8-G
Remote Tester: 1-4-3-2-5-6-7-8-G
• The tester can be used to test installed network cabling between wall sockets
by using a matched pair of RJ45 or 110P4 cables between wall sockets and
tester.
BATTERY REPLACEMENT
• If “ ” appears in display, it indicates that the battery should be replaced.
• To replace battery remove the meter from the protective surround, then
remove the 2 screws in the rear of the case
• Remove the rear case half and simply remove the old battery, and replace with
a new one. (9-volt battery, NEDA 1604 6F22 type)
• Be careful to observe correct polarity.
• Fuses rarely need replacement and blow almost always as a result of operator
error. (F500mA/500V for mA terminal and F5A/500V for 5A terminal).

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INFORMATION ON WASTE DISPOSAL FOR CONSUMERS OF ELECTRICAL
& ELECTRONIC EQUIPMENT.
When this product has reached the end of its life it must be treated as Waste Electrical &
Electronics Equipment (WEEE). Any WEEE marked products must not be mixed with general
household waste, but kept separate for the treatment, recovery and recycling of the materials
used. Contact your local authority for details of recycling schemes in your area.
Made in China. PR2 9PP
Man Rev 1.0
CLEANING
SPECIFICATIONS
• Clean the meter with a clean, soft cloth.
• Do not use any chemicals, abrasives or solvents that could damage the meter.
Max display: LCD 3½ digits (1999 count) 0.5” high
Polarity: Automatic, indicated minus, assumed plus.
Measure method: Double integral A/D switch implement
Sampling speed: 2 times per second
Over-load indication: “1” is displayed
Cable Test RJ11, RJ12 and RJ45
Operating Environment: 0o~40o, at <80%RH
Storage Environment: -10o~50o, at <85%RH
Power: 9V NEDA 1604 or 6F22
Low battery indication: “ ”
Static electricity: Approx 4mA
Dimension: 126 x 70 x 26mm
Weight: 108g (including battery)