Tenma 72-1015 User manual

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Bench Digital Multimeter
User Manual
Part Number: 72-1015

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Overview
This Operating Manual covers information on safety and cautions. Please read the relevant information carefully and strictly
observe all warnings.
Warning
To avoid electric shock or personal injury, read the “Safety Information” and “Rules for Safety Operation” carefully
before using the Meter.
Digital Bench-Type True RMS Multimeter Model 72-1015 (hereafter referred to as “the Meter”) has auto and manual range
options with maximum reading of 5999 counts and 3-5/6 digits which has a unique outlook design.
In addition to all the conventional features including DC/AC voltage, current, resistance, diode, continuity test, capacitance,
temperature °C and °F, transistor, max/min, there is a data hold, low battery display, sleep mode, RS232C serial port for easy
connection with computer to realize macro recording, monitoring and capture of transient dynamic data, displaying change of
waveform during the measurement, providing data and evidence to engineering technicians for scientic research.
Inspection
Open the package case and take out the Meter. Check the following items carefully for missing or damaged parts:
Item Description Qty
1 Operating Manual 1 piece
2 Test Lead 1 pair
3 Alligator Clip 1 pair
4 Multi-Purpose Socket 1 piece
5 Point Contact Temperature Probe (to be used under 230°C temperature measurement) 1 piece
6 Power Cord 1 piece
7 RS232C Interface Cable 1 piece
8 Installation guide and computer interface software (CD-ROM) 1 piece
In the event that items are found missing or damaged, contact your Tenma dealer immediately.
Safety Information
This Meter complies with the standards IEC61010: in pollution degree 2, over voltage category (CAT. I 1000V, CAT.II 600V) and
double insulation.
CAT III: Distribution level, xed installation, with smaller transient over voltages than CAT. IV
CAT IV: Primary supply level, overhead lines, cable systems etc.
Use the Meter only as specied in this operating manual, otherwise the protection provided by the Meter may be impaired.
In this manual, a Warning identies conditions and
actions that pose hazards to the user, or may damage the Meter or the equipment under test.
A Note identies the information that user should pay special attention to.
International electrical symbols used on the Meter and in this Operating Manual are explained on page 8.

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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. Replace damaged test
leads with identical model number or electrical specications before using the Meter.
• Do not apply more than the rated voltage, as marked on the Meter, between the terminals or between any terminal and
ground.
• Prior to measurement, ensure the rotary selector switch is in the proper position. To prevent potential damage to the meter,
do not change range or mode during measurement.
• When the Meter working at an effective voltage over 60V DC, or 30V RMS AC, special care should be taken for there is
danger of electric shock.
• Use the proper terminals, function, and range for your measurements.
• If the value to be measured is unknown, use the maximum measurement position and reduce the range step by step until a
satisfactory reading is obtained.
• Do not use or store the Meter in an environment of high temperature, humidity, explosive, ammable gas or strong magnetic
eld. Do not use the meter if allowed to get wet. Even after complete drying, incorrect readings could occur, causing a po-
tentially hazardous condition.
• When using the test leads, keep your ngers behind the nger guards.
• Disconnect circuit power and discharge all high-voltage capacitors before testing resistance, continuity, diodes, current, or
capacitance.
• Before measuring current, check the Meter’s fuses and turn off power to the circuit before connecting the Meter to the circuit.
• 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 test leads, temperature probe, RS232C interface cable, and alligator clip from the Meter and turn the Meter power
off before opening the Meter case.
• When servicing the Meter, use only the same model number or identical electrical specications 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 only.
• Turn the Meter power off when it is not in use. Remove batteries from meter if use of battery power is not anticipated for long
periods of time.
• Routinely check installed batteries for leaking. Remove immediately if evidence of leaks exist.

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International Electrical Symbols
AC or DC
Ground
Double Insulated
Warning. Refer to the Operating Manual
Low Battery
Continuity Test
Diode
Capacitance Test
Fuse
Conforms to Standards of European Union
The Meter Structure (see gure 1)
(Figure 1)
1. LCD Display 2. Rotary Switch
3. Input Terminals 4. Functional Buttons

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Rotary Switch
Below table indicated for information about the rotary switch positions:
Rotary Switch Position Function
AC and DC voltage measurement
:Continuity test.
:Diode test.
Ω :Resistance measurement.
Capacitance test
Hz Frequency measurement.
°F Temperature in Fahrenheit
°C Temperature in celsius
hFE Transistor test
AC or DC current measurement range from 0.1uA to 5999uA.
AC or DC current measurement range from 0.01mA to 599.9mA.
AC or DC current measurement range from 0.01A to 10.00A.
Functional Buttons
Below table indicated for information about the functional button operations.
Button Operation Performed
POWER Turn the power on and off.
LIGHT Turn the display backlight on and off.
SELECT
• Switches between AC and DC measurement.
• Switches between continuity, diode and resistance measurements
• Switches between frequency and Fahrenheit temperature.
HOLD Press HOLD to enter and exit the Hold mode in any mode.
RANGE Press RANGE to switch between manual and auto ranging.
RS232C Turn on or off the serial port interface without changing the original setting.
MAX MIN Starts recording of maximum and minimum values. Steps the display through high (MAX) and low (MIN).
AC AC+DC To select AC or AC+DC measurement.

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Display Symbols (see gure 2)
Number Symbol Meaning
1 True RMS Indicator for true rms value.
2Data hold is active.
3Sleep Mode feature is enabled.
4 Indicates negative reading.
5 AC Indicator for AC voltage or current.
6 DC Indicator for DC voltage or current
7 AC+DC Indicator for AC+DC measurement
8 OL The input value is too large for the selected range.
9
Ω, kΩ, MΩ
Ω : Ohm. The unit of resistance.
kΩ : kilohm. 1 × 103or 1000 ohms.
MΩ : Megaohm.1 × 106or 1,000,000 ohms.
A, mA, µA
A : Amperes (amps).The unit of current.
mA : Milliamp. 1 × 10-3 or 0.001 amperes.
μA : Microamp. 1 × 10-6 or 0.000001 amperes.
V, mV V : Volts. The unit of voltage.
mV : Millivolt.1 × 10-3 or 0.001 volts.
F, mF,
μF,nF
F : Farad.The unit of capacitance.
mF : Millifarad.1 × 10-3 or 0.001 farads
μF : Microfarad.1 × 10-6 or 0.000001 farads.
nF : Nanofarad.1 × 10-9 or 0.000000001 farads.
°C, °F Centigrade temperature
Fahrenheit temperature
Hz, kHz,
MHz
Hz : Hertz. The unit of frequency in cycles/second.
kHz : Kilohertz. 1 × 103or 1,000 hertz.
MHz: Megahertz. 1 × 106or 1,000,000 hertz.
Unit of transistor.

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Number Symbol Meaning
10 Test of diode
11 The continuity buzzer is on.
12 Auto Range
Manual
Indicator of Auto or manual range
13 Display of maximum or minimum value.
14 Data output is in progress.
15 The battery is low.
Warning: To avoid false readings, which could lead to possible electric shock or
personal injury, replace the battery as soon as the battery indicator appears.
16 Transistor test is on
Measurement Operation
A. DC or AC Voltage Measurement (See gure 3)
(Figure 3)
Warning
To avoid personal injury, or damage to the Meter from electric shock, please do not attempt to measure voltages higher
than 1000V although readings may be obtained.
To measure DC/AC voltage, connect the Meter as follows:
1. Insert the red test lead into the terminal and the black test lead into the COM terminal. If the measured value is less than
600mV, insert the red test lead into mV terminal instead and press RANGE button to select manual range 600.0mV mode,
the LCD displays “MANUAL” and “mV”.
2. Set the rotary switch to V ; press SELECT button to select DC or AC measurement mode.
3. Connect the test leads across with the object being measured. The measured value shows on the display. AC measurement
displays True RMS value.
4. Press AC/AC+DC button to measure AC+DC voltage’s true RMS.
Note
• In each range, the Meter has an input impedance of 10MΩ except 600mV range has 3000MΩ . This loading effect can
cause measurement errors in high impedance circuits. If the circuit impedance is less than or equal to 10kΩ , the error is
negligible (0.1% or less).
• When DC/AC voltage measurement has been completed, disconnect the connection between the test leads and the circuit
under test, and remove the test leads from the input terminals of the Meter.

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B. DC or AC Current Measurement (See gure 4)
(Figure 4)
Warning
Before connecting the meter in series with the circuit under test, be sure power to the circuit is off to avoid the
possibility of arcing.
If the fuse burns out during measurement, the Meter may be damaged and there is risk of personal injury to the
operator. Use proper terminals, function, and range for the measurement. When the test leads are connected to the
current terminals, do not parallel them across any circuit.
To measure current, do the following:
1. Insert the red test lead into the μA mA terminal andthe black test lead into the COM terminal.
2. Set the rotary switch to an appropriate measurement position in μA , mA or A, press SELECT button to select AC or
DC measurement mode.
3. Connect the test leads in series with the object being measured. The measured value shows on the display. AC measurement
displays True RMS value.
4. Press AC/AC+DC button to measure AC+DC current’s true RMS
Note
• If the value of current to be measured is unknown, use the maximum measurement position, and reduce the range step by
step until a satisfactory reading is obtained.
• For safety sake, each measurement time of high current (>5A) should be less than 10 seconds and the interval time between
2 measurements should be greater than 15 minutes.
• When current measurement is complete, disconnect the test leads from the circuit under test. Disconnect the test leads from
the input terminals on the meter.

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Measuring Resistance (see gure 5)
(Figure 5)
Warning
To avoid damage to the Meter or to the devices under test, disconnect circuit power and discharge all the high-voltage
capacitors before measuring resistance. To avoid possible injury, please do not attempt to input voltages higher than
60V DC or 30V AC.
To measure resistance, connect the Meter as follows:
1. Insert the red test lead into the Ω terminal and the black test lead into the COM terminal.
2. Set the rotary switch to Ω , press SELECT button to select Ω measurement mode.
3. Connect the test leads across with the object being measured. The measured value shows on the display
Note
• When measuring low resistances, the test leads and internal wiring will add approximately 0.2Ω to 0.5Ω of error. To obtain
accurate readings in low-resistance, short-circuit the test lead beforehand and record the reading obtained, call this reading
as X. Then use the equation:
measured resistance value (Y) – (X) = accurate readings of resistance.
• If Ω reading with shorted test leads is not < 0.5Ω, check for loose test leads or possible incorrect function selection.
• When measuring high resistance (>1MΩ), it is normal to take several seconds to obtain a stable reading. In order to obtain
stable reading, choose shorter test lead to carrying out measurement.
• The LCD displays OL indicating open-circuit for the tested resistor or the resistor value is higher than the maximum range
of the Meter.
• When resistance measurement has been completed, disconnect the connection between the test leads and the circuit
under test, and remove the test leads from the input terminals if the meter.

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D. Testing Continuity (See gure 6)
(Figure 6)
Warning
To avoid damage to the Meter or to the devices under test, disconnect circuit power and discharge all the high-voltage
capacitors before testing for continuity. To avoid personal injury, please do not attempt to input voltages higher than
60V DC or 30V AC.
To test for continuity, connect the Meter as below:
1. Insert the red test lead into the Ω terminal and the black test lead into the COM terminal.
2. Set the rotary switch to Ω , and press SELECT button to select measurement mode.
3. Connect the test lead across with the object being measured. The buzzer sounds if the resistance of a circuit under test is
< 70 , the circuit is in good condition. The buzzer does not sound if the resistance of a circuit under test is >70 , the circuit is
broken.
4. The measured value shows on the display and the unit is Ω.
Note
• In continuity mode, the resistance range is 600 Ω, and the open circuit voltage is approximately 1.2V.
• When continuity testing has been completed, disconnect the connection between the test leads and the circuit under test,
and remove the test leads from the input terminals of the Meter.

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E. Testing Diodes (See gure 7)
(Figure 7)
Warning
To avoid possible damage to the Meter and to the device under test, disconnect circuit power and discharge all
high-voltage capacitors before testing diodes.
To avoid personal injury, please do not attempt to input voltages higher than 60V DC or 30V AC.
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 a diode out of a circuit, connect the Meter as follows:
1. Insert the red test lead into Ω terminal and the black test lead into the COM terminal.
2. Set the rotary switch to Ω and press SELECT button to select measurement mode.
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 measured value shows on the display.
Note
• Connect the test leads to the proper terminals as said above to avoid error display. The LCD will display OL indicating diode
being tested is open or polarity is reversed. The unit of diode is Volt (V), displaying the forward voltage drop readings.
• Open circuit voltage is around 2.7V.
• When diode testing is completed, disconnect the test leads from the device under test, and remove the test leads from the
input terminals of the meter.

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F. Capacitance Measurement (See gure 8)
(Figure 8)
Warning
To avoid damage to the Meter or to the equipment under test, disconnect circuit power and discharge all high-voltage
capacitors before measuring capacitance. Use the DC Voltage function to conrm that the capacitor is discharged.
To measure capacitance, connect the Meter as follows:
1. Insert the red test lead into the HzΩmV terminal and the black test lead into the COM terminal.
2. Set the rotary switch to .
3. Connect the test leads across with the object being measured. The measured value shows on the display.
Note
• The Meter displays a xed value which is the distributed capacitor’s value of the inside Meter. To ensure accuracy, it is
necessary to subtract this value from the measured value when measuring small capacitor.
• Multi-purpose socket can be used instead of test leads. Insert the capacitor being tested into the corresponding input
terminal of the multi-purpose socket. This socket will provide a more accurate reading when measuring small capacitor
values.
• When measuring capacitance values larger than 600uF, it is normal for the meter to require some time to stabilize.
• The LCD displays OL indicating the tested capacitor is shorted or it exceeds the maximum range.
• When capacitance measurement has been completed, disconnect the test leads from the device under test and remove the
leads from the input terminals of the meter.

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G. Frequency Measurement (see gure 9)
(Figure 9)
Warning
To avoid the risk of personal injury, do not attempt to measure frequency with voltage higher than 30V RMS.
To measure frequency, connect the Meter as follows:
1. Insert the red test lead into the Hz terminal and the black test lead into the COM terminal.
2. Set the rotary switch to Hz0Fand press SELECT button to select Hz measurement mode
3. Connect the test leads across with the object being measured. The measured value shows on the display.
Note
• When making frequency measurements, the measured signal “a”, must fall within the following
voltage level:
When 10Hz to 1MHz : 150m ≤ a ≤ 30 rms
When > 1MHz to 10MHz : 300m ≤ a ≤ 30 rms
When > 10MHz to 50MHz : 600m ≤ a ≤ 30 rms
When > 50MHz : Unspecied
• When frequency measurement is complete, disconnect the test leads from the circuit under test, and remove from the
input terminals of the meter.

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H. Temperature Measurement (see gure 10)
(Figure 10)
To measure temperature, connect the Meter as follows:
1. Set the rotary switch to 0Cto measure degree celsius temperature or Hz0Fand press SELECT button to select 0F
measurement mode to measure Fahrenheit.
2. Insert the multi-purpose socket into the corresponding Hz and COM terminal.
3. Insert the temperature probe to the corresponding input terminal of the multi-purpose socket. Take care to ensure that proper
polarity is observed when connecting to this socket.
4. Place the temperature probe to the object being measured. The measured value shows on the display after few seconds.
Note
• The testing environment must between 180C to 280C to ensure accuracy especially when measuring low temperature.
• Different reading may be obtained when testing room environment under short or open circuit situation, then short-circuited
reading shall be considered as the correct reading.
• The included point contact temperature probe can only be used under 2300C. For any measurement higher than that, the
rod type temperature probe must be used instead.
• When temperature measurement has been completed, disconnect the connection between the temperature probe,
multi-purpose socket and the circuit under test, and remove the temperature probe from the input terminals of the
multi-purpose socket, and remove the multi-purpose socket from the input terminals of the Meter.

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I. Measuring Transistor (see gure 11)
PNP NPN
(Figure 11)
To measure transistor, connect the Meter as follows:
1. Insert the multi-purpose socket into the μAmA and Hz input terminal.
2. Set the rotary switch to hFE.
3. Insert the NPN or PNP type transistor to be tested into the corresponding input terminals of the multipurpose socket.
4. The measured nearest transistor value shows on the display.
Note
• When transistor measeurement has been completed, remove the tested transistor from the multi-purpose socket and
remove the multi-purpose scoket from the input terminal
Operation of Hold Mode
Warning
To avoid possibility of electric shock, do not use Hold mode to determine if circuits are without power. The Hold mode
will not capture unstable or noisy readings.
The Hold mode is applicable to all measurement functions.
• Press HOLD to enter Hold mode.
• Press HOLD again to exit Hold mode and the Meter displays the present measurement value.
• In Hold mode, is displayed.
The POWER Button
This is a self-lock switch used to turn on or off the power Meter. It is located at the rear of the Meter. “I” indicates power on,
while “O” indicates power off.
The SELECT Button
Some positions of the rotary selector have more than one function. This button is used for selecting the second function.

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Turning on the Display Backlight
Warning
In order to avoid the hazard arising from mistaken readings in low light situations, please use Display Backlight
function.
• Press LIGHT button to turn the Display Backlight on.
• Press LIGHT button again to turn the Display Backlight
• off.
• When using the AC power, the Display Backlight always stays on.
The Range Button
• Press RANGE to enter the manual ranging mode.
• Press and hold RANGE for over 1 second to return to autoranging.
The MAX MIN Button
MAX MIN recording mode captures and stores the maximum and minimum input value detected.
To use the MAX MIN mode as follows:
• Press MAX MIN to display the highest reading ( is shown on display).
• Press MAX MIN again to display the lowest reading ( is shown on display). Press and hold MAX MIN for over 1 second
to exit the MAX MIN mode.
AC/AC+DC Button
It is used to select measuring AC or AC+DC when measuring AC. Press it only at the AC voltage or current measuring mode
which is at the rotary switch position V, mV ,μA , mA or A. “+DC “ will be displayed when it is pressed under DC
measurement mode.
Power Input Switch
It is used to select AC 120V/60Hz or DC 6pcs of 1.5V battery (R14) to power on the Meter. It is located at the rear of the Meter.
Sleep Mode
The meter will automatically enter the sleep mode after approximately 10 minutes of inactivity, to preserve battery life. The last
value will be stored.
The Meter can be activated by pressing the POWER button off and then on or pressing the HOLD button, it will display the last
measurement value before it entered sleep mode and under the HOLD mode.
Turning the rotary switch can also activate the Meter. However, it will start from the switch selected function and it will not display
the last measurement value before it entered sleep mode.
To disable the Sleep Mode function, press MAX MIN, RANGE, or RS232 button while turning on the Meter, the symbol
disappears.
RS232 Button
Press RS232 button to enter or exit data output mode.
In RS232C serial port data output mode, the Hold and Max Min mode cannot output to the computer, the computer will only
display the present measuring value. In RS232C serial port data output mode, Sleep Mode function will be disabled, symbol
disappears. +DC, hFE and β cannot output to the computer.

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General Specications
• Maximum Voltage between any Terminals and Grounding:
Refer to different range input protection voltage.
• Fused Protection for HzΩWmV Input Terminal: 200mA, 250V, fast type, ɸ5 × 20mm (only apply on hFE functions)
• Fused Protection for μAmA Input Terminal: 500mA, 125V, fast type, ɸ5 × 20mm.
• Fused Protection for 10A Input Terminal: 10A, 250V, fast type, ɸ5 × 20mm.
• Fused Protection for AC125V Terminal: 500mA, 125V, fast type, ɸ5 × 20mm.
At AC125V power: without fuse protection.
• Maximum Display : Digital: 5999
• Measurement Speed : Updates 2-3 times/second.
• Range : Manual or auto ranging.
• Polarity Display : Auto
• Overloading Display : OL
• Temperature:
Operating: 00C to +400C (320F to +1040F).
Storage : -100C to +500C (140F to +1220F).
• Relative Humidity:
≤75% @ 00C - 300C below; ≤50% @ 30 - 400C.
• Altitude:
Operating : 2000 m.
Storage : 10000 m.
• Below 1V/m electrostatic discharge:
Accuracy = specied accuracy + 5% of the range. Over 1V/m electrostatic discharge: Without specied accuracy.
• Power:
AC110V/60Hz or 6 pieces of 1.5V battery (R14).
• Low Battery:
Display
• Dimensions (H × W × L):
4.13" × 9.45" × 12.21"
• Weight:
Approximate 4.4 lbs(accessories excluded).
• Safety/Compliances:
IEC61010 CAT. I 1000V, CAT. II 600V over voltage and double insulation standard.
• Certications:
UL pending.

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Accuracy Specications
Accuracy: ±(a% reading + b digits),guarantee for 1 year.
Operating temperature: 23°C ±5°C.
Relative humidity: not more than 75% RH.
Temperature coefcient: 0.1 × (specied accuracy)/1°C.
A. DC Voltage
Range Resolution Accuracy Overload Protection
600mV 0.1mV ±(0.6%+2)
1000V
6V 0.001V
± (0.3%+2)60V 0.01V
600V 0.1V
1000V 1V ± (0.5%+3)
Remarks:
• Input Impedance:
At 600mV range : Around > 3000MΩ.
At all other ranges : Around 10MΩ.
B. AC Voltage
Range Resolution Accuracy Overload Protection
600mV 0.1mV 40Hz-50kHz: ±(0.6%+5)
1000V
>50kHZ-100kHz: ±(1%+5)
6V 0.001V
40Hz-1kHz: ±(0.6%+5)
>1kHz-10kHz: ±(1.0%+5)
>10kHz-100kHz: ±(3%+5)
60V 0.01V
40Hz-1kHz: ±(0.6%+5)
>1kHz-10kHz: ±(1.5%+5)
>10kHz-20kHz: ±(3%+5)
>20kHz-100kHz: ±(8%+5)
600V 0.1V 40Hz-1kHz: ±(0.6%+5)
>1kHz-10kHz: ±(3.5%+5)
1000V 1V 40Hz-1kHz: ±(1.2%+3)
>1kHz-3kHz: ±(3%+3)
Remarks:
Input Impedance:
At 600mV range : Around > 3000MΩ
At all other ranges : Around 10MΩ
Displays:
True RMS (applicable to the range of 10% to 95%)
At 1000V range: AC peak factor 1.5.
All other ranges: AC peak factor 3.
Input short circuit has around less than 30 remaining digits, it will not affect accuracy.
AC+DC measurement accuracy = range’s accuracy + 1%

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C. DC Current
Range Resolution Accuracy Overload Protection
600μA 0.1μA
±(0.5%+3) Fuse 500mA, 125V,
fast type, ɸ5 × 20mm.
6000μA 1μA
60mA 0.01mA
600mA 0.1mA ±(0.8%+3)
10A 10mA ±(1.2%+3) Fuse 10A, 250V,
fast type, ɸ5 × 20mm.
Remarks:
• At 5A range: Continuous measurement is allowed.
• At >5A range: For continuous measurement ≤10 seconds and interval not less than 15 minutes.
D. AC Current
Range Resolution Accuracy Overload Protection
600μA 0.1μA 40Hz to 10kHz: ±(1%+5)
>10kHz to 15kHz: ±(2%+5) Fuse 500mA, 125V, fast
type, ɸ5 × 20mm.
6000μA 1μA
60mA 0.01mA
600mA 0.1mA 40Hz to 10kHz: ±(1%+5)
>10kHz to 15kHz: ±(3%+5)
10A 10mA 40Hz to 5kHz: ±(2%+6) Fuse 10A,250V,
fast type, ɸ5 × 20mm
Remarks:
• At ≤5A range : Continuous measurement is allowed.
• At >5A range : For continuous measurement ≤10 seconds and interval not less than 15 minutes.
• Displays:
True RMS (applicable to the range of 10% to 95%)
AC peak factor 3.
Input short circuit has around less than 30 remaining digits, it will not affect accuracy.
AC+DC measurement accuracy = range’s accuracy + 1%
E. Resistance
Range Resolution Accuracy Overload Protection
600Ω 0.1Ω ±(0.8%+3) + test lead short
circuit resistance value
250V rms
6kΩ 0.001kΩ
±(0.5%+2)60kΩ 0.01kΩ
600kΩ 0.1kΩ
6MΩ 0.001MΩ ±(0.8%+2)
60MΩ 0.01MΩ ± (1.2%+3)

TM
TM
Page <20> V1.027/12/19
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F. Continuity Test
Range Resolution Overload Protection Remarks
1Ω 250V rms
• Open circuit voltage approximate -1.2V.
• When circuit disconnected with resistance value
> 30Ω, buzzer does not beep.
• When circuit is in good connection with resistance
• value ≤70Ω buzzer beeps continuously.
G. Diode Testst
Range Resolution Overload Protection Remarks
10mV 250V rms • Open circuit voltage approximate 2.7V.
• Working current approximate 1mA.
H. Capacitance
Range Resolution Accuracy Overload Protection
6nF 0.001nF ± (2.5%+5)
250V rms
60nF 0.01nF
600nF 0.1nF
± (2%+5)6μF 0.001μF
60μF 0.01μF
600μF 0.1μF ± (3%+4)
6mF 0.001mF ± (5%+4)
Remarks:
• At 6nF, 60nF and 600nF Range: reading must subtract the test lead open circuit capacitance value.
I. Frequency
Range Resolution Accuracy Overload Protection
6kHz 0.001kHz
± (0.1%+3) 250V rms
60kHz 0.01kHz
600kHz 0.1kHz
6MHz 0.001MHz
60MHz 0.01MHz
Remarks:
• Input scope (a): (DC electric level is zero)
When 10Hz to 1MHz : 150mV ≤ a ≤ 30V rms
When > 1MHz to 10MHz : 300mV ≤ a ≤ 30V rms
When > 10MHz to 50MHz : 600mV ≤ a ≤ 30V rms
When > 50MHz : Unspecied