koban KMD-S04 User manual

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KMD-S04
Multímetro de bolsillo

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Table of Contents
Title Page
Overview ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 3
Unpacking Inspection ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 4
Safety Information ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 4
Rules For Safe Operation ~~~~~~~~~~~~~~~~~~~~~~~~ 5
International Electrical Symbols ~~~~~~~~~~~~~~~~~~~~~~~~ 7
The Meter Structure ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 7
Functional Buttons ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 8
Measurement Operation ~~~~~~~~~~~~~~~~~~~~~~~~ 9
A. DC Voltage Measurement ~~~~~~~~~~~~~~~~~~~~~~~~ 10
B. AC Voltage Measurement ~~~~~~~~~~~~~~~~~~~~~~~~ 11
C. Measuring Resistance ~~~~~~~~~~~~~~~~~~~~~~~~ 11
D. Frequency and Duty Cycle Measurement ~~~~~~~~~~~~~ 13
E. Measuring Diodes & Continuity ~~~~~~~~~~~~~~~~~~~~~ 14
F. Capacitance Measurement ~~~~~~~~~~~~~~~~~~~~~~~~ 16

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Title Page
Sleep Mode ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 17
General Specifications ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 18
Accuracy Specifications ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 18
A. Resistance Test~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 18
B. DC Voltage ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 19
C. AC Voltage ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 19
D. Frequency ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 20
E. Diodes and Continuity Test~~~~~~~~~~~~~~~~~~~~~~~~~ 20
F. Duty Cycle ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 21
G. Capacitance ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 21
Maintenance ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 22
A. General Service~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 22
B. Replacing the Battery~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 23
PERATING MANUAL

Overview
Warning
To avoid electric shock or personal injury, read the “Safety Information” and “Rules for
Safety Operation” carefully before using the Meter.
Pocked-Sized Digital Multimeter (hereafter referred to as “the Meter”) is a 3 3/4 digits with
steady operations, fashionable structure, low power consumption and highly reliable hand-held
measuring instrument. The Meter uses large scale of integrated circuit with double integrated
A/D converter as its core. The Meter not only can measure AC/DC Voltage, Resistance,
Capacitance, Frequency, Diodes and Continuity, but also has D-HOLD, Full Icon Display, Duty
Cycle and Sleep Mode features.
Unpacking Inspection
Open the package case and take out the Meter. Check the following items carefully to see any
missing or damaged part:
Item
Description
Qty
1
English Operating Manual
1 piece
2
Built-In Test Lead
1 pair
3
Vinyl Holder
1 piece
4
3V Button Battery (CR2032)
1 piece
In the event you find any missing or damage, please contact your dealer immediately.
Safety Information

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This Meter complies with the standards IEC61010: in pollution degree 2, overvoltage category
(CAT. II 300V) and double insulation.
CAT. II: Local level, appliance, PORTABLE EQUIPMENT etc., with smaller transient voltage
overvoltages than CAT. III
Use the Meter only as specified in this operating manual, otherwise the protection provided by
the Meter may be impaired.
In this manual, a Warning identifies conditions and actions that pose hazards to the user,
or may damage the Meter or the equipment under test.
A Note identifies the information that user should pay attention on.
International electrical symbols used on the Meter and in this Operating Manual are explained
on page 7.

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Rules For Safe Operation
Warning
To avoid possible electric shock or personal injury, and to avoid possible damage
to the Meter or to the equipment under test, adhere to the following rules:
Before using the Meter inspect the case. Do not use the Meter if it is damaged or
the case (or part of the case) is removed. Look for cracks or missing plastic.
Pay attention to the insulation around the connectors.
Inspect the test leads for damaged insulation or exposed metal. Check the test
leads for continuity.
Do not apply more than the rated voltage, as marked on the Meter, between the
terminals or between any terminal and grounding.
The rotary switch should be placed in the right position and no any changeover of
range shall be made during measurement is conducted to prevent damage of the
Meter.
When the Meter working at an effective voltage over 60V in DC or 30V rms in AC,
special care should be taken for there is danger of electric shock.
Use the proper terminals, function, and range for your measurements.
Do not use or store the Meter in an environment of high temperature, humidity,

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explosive, inflammable and strong magnetic field. The performance of the Meter
may deteriorate after dampened.
When using the test leads, keep your fingers behind the finger guards.
Disconnect circuit power and discharge all high-voltage capacitors before testing
resistance, continuity, diodes or capacitance.
Replace the battery as soon as the battery indicator appears. With a low
battery, the Meter might produce false readings that can lead to electric shock
and personal injury.
Remove the connection between the testing leads and the circuit being tested,
and turn the Meter power off before opening the Meter case.
When servicing the Meter, use only the same model number or identical electrical
specifications replacement parts.
The internal circuit of the Meter shall not be altered at will to avoid damage of the
Meter and any accident.
Soft cloth and mild detergent should be used to clean the surface of the Meter
when servicing. No abrasive and solvent should be used to prevent the surface of
the Meter from corrosion, damage and accident.
The Meter is suitable for indoor use.
Turn the Meter power off when it is not in use and take out the battery when not
using for a long time. Constantly check the battery as it may leak when it has

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been using for some time, replace the battery as soon as leaking appears. A
leaking battery will damage the Meter.
International Electrical Symbols
AC (Alternating Current).
DC (Direct Current).
Important safety information. Refer to the manual.
Dangerous voltage may be present.
Earth ground.
Diode
Conforms to European Union directive.
Double insulated.
Deficiency of Built-In Battery
Capacitance
Continuity Test(buzzer)
The Meter Structure (see figure 1)
1. LCD Display
2. RANGE Button
3. SELECT Button
2
3
4
5

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4. D-HOLD Button
5. Hz/DUTY Button
6. Rotary Switch
7. Black Test Lead
8. Red Test Lead
Functional Buttons
Below table indicated for information about the functional button operations
Button
Operation Performed
SELECT
Presses SELECT to switch between resistance, capacitance, continuity
buzzer and diode measurement modes; the Meter beeps. Resistance
measurement is default.
D-HOLD
Press D-HOLD once to enter hold mode.
Press D-HOLD again to exit hold mode.
In Hold mode, is displayed and the present value is shown.
Hz/DUTY
Press Hz/DUTY at DCV to step through DCV, frequency and duty
cycle measurement mode. AUTO on the LCD will be disappeared.
Press Hz/DUTY at ACV to step through ACV, frequency and duty
cycle measurement mode. AUTO on the LCD will be disappeared.
The Meter will be at DCV: 400mV or ACV: 4V after stepping through
Figure 1

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frequency and duty cycle measurement mode. Therefore it is
necessary to turn the rotary switch or turn off and on the Meter to
resume to auto ranging mode when measuring higher voltage.
RANGE
AC/DC voltage and Resistance measuring ranges can be selected manually
or automatically by pushing the range control button. Push this button as
follows to choose range control mode and needed ranges.
Figure 2
less than 2 seconds
over 2 seconds

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Measurement Operation
Make sure the Sleep Mode is not on if you found there is no display on the LCD after turning
on the Meter.
Make sure the Low Battery Display is not on, otherwise false readings may be provided.
Pay extra attention to the symbol which is located besides the input terminals of the Meter
before carrying out measurement.
A. DC Voltage Measurement (see Figure 3)
Figure 3

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Warning
To avoid harms to you or damages to the Meter from electric shock, please do not
attempt to measure voltages higher than 300V although readings may be obtained and
take extra care when measuring high voltage.
To measure DC voltage, connect the Meter as follows:
1. Set the rotary switch to DCV range.
2. Connect the test leads across with the object being measured with red test lead to the
positive and black test lead to the negative. The measured value shows on the display.
Note
The LCD displays the negative reading when the test lead connection is reversed. When DC
voltage measurement has been completed, disconnect the connection between the testing
leads and the circuit under test.
B. AC Voltage Measurement (see Figure 3 with dotted line)
Warning
To avoid harms to you or damages to the Meter from electric shock, please do not
attempt to measure voltages higher than 300V although readings may be obtained and
take extra care when measuring high voltage.
To measure AC Voltage, connect the Meter as follows:
1. Set the rotary switch to ACV range.

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2. Connect the test leads across with the object being measured.
The measured value shows on the display
Note
When AC voltage measurement has been completed, disconnect the connection between the
testing leads and the circuit under test.
C. Measuring Resistance (see figure 4)
Figure 4

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Warning
To avoid damages to the Meter or to the devices under test, disconnect circuit power
and discharge all the high-voltage capacitors before measuring resistance.
Note
The test leads can add 0.1Ω to 0.3Ωof error to the resistance measurement.
To obtain precision readings in low-resistance, that is the range of 400Ω, short-circuit the red
and black test leads beforehand and record the reading obtained (called this reading as X).
Then use the equation: measured resistance value (Y) –(X) = precision readings of resistance.
To measure resistance, connect the Meter as follows:
1. Set the rotary switch to Ωrange.
2. Connect the test leads across with the object being measured. The measured value shows
on the display.
For high resistance (>1MΩ), it is normal taking several seconds to obtain a stable reading.
When there is no input, for example in open circuit condition, the Meter displays “OL”.
When resistance measurement has been completed, disconnect the connection between the
testing leads and the circuit under test.

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D. Frequency and Duty Cycle Measurement (see figure 4)
Warning
To avoid harm to you or damages to the Meter, do not attempt to measure voltages
higher than 60V in DC or 30V rms in AC although readings may be obtained.
The testing resolution may vary from the inputted frequency and waveform, the Meter
resolution is based on the sine wave.
Note
When Hz or Duty Cycle measurement has been completed, disconnect the connection
between the testing leads and the circuit under test.
To measure frequency and duty cycle, connect the Meter as follows:
1. Set the rotary switch to ACV or DCV range.
2. Press Hz/DUTY button select Frequency or Duty Cycle measurement mode.
3. Connect the test leads across with the object being measured.
The measured value shows on the display.
E. Measuring Diodes & Continuity (see figure 4)
Warning
To avoid damage to the Meter or to the equipment under test, disconnect circuit power

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and discharge all high-voltage capacitors before measuring diodes and continuity.
Never attempt to input over 60V in DC or 30V rms in AC to avoid personal dangerous.
Testing Diodes
Use the diode test to check diodes, transistors, and other semiconductor devices.
The diode test sends a current through the semiconductor junction, and then measures the
voltage drop across the junction. A good silicon junction drops between 0.5V and 0.8V.
To test out a diode out of a circuit, connect the Meter as follows:
1. Set the rotary switch to Ωrange.
2. Press SELECT button to select diode test.
3. For forward voltage drop readings on any semiconductor component, place the red test lead
on the component’s anode and place the black test lead on the component’s cathode. The
LCD displays the nearest value of diode forward voltage drop.
Note
In a circuit, a good diode should still produce a forward voltage drop reading of 0.5V to 0.8V;
however; the reverse voltage drop reading can vary depending on the resistance of other
pathways between the probe tips.
Connect the test leads properly as said above to avoid error display. The LCD will display
“OL” indicating open-circuit for wrong connection. The unit of diode is Volt (V), displaying the
positive-connection voltage-drop value.

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When diode testing has been completed, disconnect the connection between the testing leads
and the circuit under test.
Testing for Continuity
To test for continuity, connect the Meter as below:
1. Set the rotary switch to Ω  range.
2. Press SELECT button to select continuity test.
3. Connect the test leads across with the object being measured. The buzzer sounds
continuously if the resistance of a circuit under test is around less than 70Ω. The LCD displays
the resistance value of a circuit under test simultaneous.
F. Capacitance Measurement (see figure 4)
Warning
To avoid damage to the Meter or to the equipment under test, disconnect the tested
circuit power when measuring on line capacitors and discharge all high-voltage
capacitors before measuring capacitance.
Use the DC voltage function to confirm that the capacitor is discharged.
Never attempt to input over 60V in DC or 30V rms in AC to avoid personal dangerous.
To measure capacitance, connect the Meter as follows:
1. Set the rotary switch to Ωrange.

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2. Press SELECT button to select capacitance test.
3. Connect the test leads across with the object being measured. The measured value shows
on the display.
Note
For testing the capacitor with polarity, connect the red test lead to anode & black test lead to
cathode.
For measuring capacitance higher than 10uF, it is normal taking several seconds to obtain a
reading.
When capacitance measurement has been completed, disconnect the connection between the
testing leads and the circuit under test.
Sleep Mode
To preserve battery life, the Meter automatically turns off if you do not turn the rotary switch or
press any button for around 15 minutes. The Meter can be activated by pressing any
functional buttons or turning the rotary switch. When the Meter is activated by pressing
SELECT button, the Sleep Mode feature will be disabled.

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General Specifications
Maximum voltage between any Terminals and Grounding: 300V rms or 300DCV
Range: Auto ranging or manual ranging.
Maximum Display: 3999. (3 3/4 digits)
Measurement Speed: Updates 3 times/second.
Operating Temperature: 0ºC~40ºC (32ºF~104ºF), Relative Humidity: 75%
Storage Temperature: -10ºC~50ºC (14ºF~122ºF), Relative Humidity: 80%
Altitude: Operating: 2000m; Storage: 10000m.
Battery Type: 3V button battery (CR2032).
Battery Deficiency: At around < 2.4V, Display “ ”.
D-HOLDing: Display “ ”
Negative reading: Display “-“
Overloading: Display “OL”.
Dimensions (H x W x L): 108x58x12mm.
Weight: Approx.125g (battery and test lead included).
Safety/Compliances: IEC61010 CAT II 300V overvoltage and double insulation standard.
General Specifications
Accuracy Specifications
Accuracy: ±(a% reading + b digits), guarantee for 1 year.
Operating temperature: 23ºC ± 5ºC

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Relative humidity: <75%.
Temperature coefficient: 0.1 x (specified accuracy) / 1ºC
A. Resistance Test
Range
Resolution
Accuracy
Overload
Protection
Remarks
400Ω
0.1Ω
±(1.2%+2)
250V AC
Open circuit voltage:
approx. 0.45V
4kΩ
1Ω
±(1.0%+2)
40kΩ
10Ω
400kΩ
100Ω
4MΩ
1kΩ
±(1.2%+2)
40MΩ
10kΩ
±(1.5%+2)
B. DC Voltage