Mercury MTTR01 User Manual

Item ref: 600.104UK

MTTR01

TRUE RMS DIGITAL MULTITESTER

WITH USB INTERFACE

User Manual

MTTR01 User Manual

Please read this manual thoroughly and
ensure all contents are fully understood

before using the apparatus.

WARNING

To avoid possible electric shock or personal injury, and to avoid possible
damage to the tester or to the equipment under test, adhere to these
following rules:

 Before using the tester inspect the case. Do not use the tester 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 tester,

between the terminals or between any terminal and grounding.

 The rotary switch should be in the right position and no changeover of

range shall be made while measurement is conducted to prevent
damage.

 When the tester is working at an effective voltage over 60V in DC or

30Vrms 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 tester in an environment of high temperature,

humidity, explosive, flammable, damp or of a strong magnetic field.
The performance of the tester may deteriorate after being exposed to
any of these elements.

 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.

 Replace the battery as soon as the battery indicator appears. With a

low battery, the meter may produce false readings that can lead to
electric shock and personal injury.

MTTR01 User Manual

 Remove the connection between the testing leads and the circuit being

tested, and turn the meter power off before opening the meter case.

 The internal circuit of the meter shall not be altered at will to avoid

damage of the meter and any accident.

 A soft cloth and mild detergent should be used to clean the surface of

the tester on a regular basis. No abrasive and solvent should be used
to prevent the surface of the tester from corrosion or damage.

 The tester is suitable for indoor use only.
 Turn the tester power off when it is not in use and take out the battery

when not using for a long time. Check the battery regularly; replace the
battery immediately if any signs of leaking appear. Battery acid will
damage the tester.

General Specifications

Max display: LCD (6000 count) 64 x 43mm
Polarity: Automatic, indicated minus, assumed plus
Measure method: double integral A/D switch implement
Sampling speed: 2.5 times per second
Over-load indication: “OL” is displayed
Operating temperature: 0ºC to 40ºC, at <75%RH
Storage temperature: -30ºC to 60ºC, at <85%RH
Power: 9Vdc (1 x PP3 battery supplied)
Low battery indication: “ ”
Display resolution: 6000 counts
Resistance: 600Ω to 60MΩ
Capacitance: 40nF - 4000µF
Frequency: 9.99Hz - 9.99MHz
Test temperature: -20°C - 1000°C
Duty cycle: 5% to 95%
Dimensions: 188 x 81 x 48mm
Weight: 420g (including battery)

MTTR01 User Manual

Layout:

MTTR01 User Manual

1. LCD Display, maximum reading of 5999.

2. Relative and USB mode switch. Press to switch between auto

reading mode “auto” and relative mode “ ”. Press and hold for 2
seconds to switch between USB mode “USB” and auto power off
mode “APO”.

3. Hz/Duty display, when measuring AC voltage or current, press to

display between the frequency and duty cycles of the measuring
signals.

4. “ ” Press this button to data hold the display and press again

to release data. Press and hold for 2 seconds to toggle the back
light on for 10 seconds.

5. “Max/Min” Press this button to display the maximum and

minimum reading from the moment this button is pressed. Press
and hold this button for 2 seconds to exit Max/Min display mode.

6. Function/Range switch for selecting different measuring ranges

and also serves as an ON/OFF switch. To preserve battery life,
please ensure the range switch is turn to OFF position when not
in use.

7. “10A” Probe socket, socket for the positive (red) probe when

measuring current between 400mA to 10A.

8. “uA/mA” Probe socket, socket for the positive (red) probe when

measuring current below 400mA.

9. “COM” Probe socket, socket for the negative (black) probe.

10. “Positive” Probe socket, socket for the positive (red) probe for

measuring everything apart from current.

11. “Range” switch, when measuring voltage, current, capacitance or

resistance, pressing this button with disengage the auto range
function and allow you to manually set the displaying range.

12. “Select” has following functions:

- When measuring signal with combined AC+DC, pressing this

button will allow the AC and DC to be measured separately.

- To switch between measuring function of resistance,

continuity and diode.

MTTR01 User Manual

- To switch between displaying Fahrenheit and Celsius when

measuring temperature.

- Press and hold this button when switching the meter on to

disable the auto power off function, this allows the meter to
stay on standby unless manually switched off.

13. Strong magnet that allows meter to be attached to any iron/steel

surface, in case both hands are required to take the
measurement.

14. Mini USB socket at the bottom of the unit to connect to a PC.

For testing transistors and capacitors, the measuring adaptor supplied
should be connected as below. The two square sockets on the top are for
testing capacitors and the 6 smaller sockets at the bottom are for testing
the PNP and NPN type transistors.

MTTR01 User Manual

LCD Display

These signs and symbols indicate:

1. Duty cycle is selected

2. Temperature measurement is selected and measuring in

Fahrenheit.

3. Temperature measurement is selected and measuring in Celsius.

4. Transistor testing mode is selected.

5. Continuity testing mode is selected, use “Select” button to

choose between resistance measuring, diode testing and
continuity testing.

6. Diode testing mode is selected, use “Select” button to choose

between resistance measuring, diode testing and continuity
testing.

7. Relative mode is selected, use “Rel/USB” button to select

between auto range mode and relative mode.

8. USB mode is selected; meter is now sending live readings out

through the USB output to connected PC.

9. Data hold, press “ ” to resume live reading.

10. Auto Range mode is selected, use “Rel/USB” button to select

between auto range mode and relative mode.

11. Auto power off mode, meter will automatically switch off when it

is not in use.

12. Displays the maximum reading from the moment the Max/Min

function is enabled.

MTTR01 User Manual

13. Displays the minimum reading from the moment the Max/Min

function is enabled.

14. Currently measuring DC range.

15. Negative reading.

16. Currently measuring AC range.

17. Low battery indicator; replace battery immediately when this sign

is shown to avoid false reading that may lead to electric shock.

18. Bar graph.

The bar graph on the bottom of the LCD display is the analogue display of
the reading when measuring voltage, current or resistance. The length of
the bar is proportionate to the 0-5999 digital count above it. The bar graph
has a sampling rate 10 times higher of the digital number display, this
make it ideal for observing measurements with rapid changes.

Technical Specifications

This meter has been calibrated in the factory and accuracies of following
are guaranteed for 1 year at 18ºC to 28ºC and less than 75% RH.

DC Voltage

RANGE

RESOLUTION

ACCURACY

60mV

10uV

± (1% of rdg + 7D)

600mV

0.1mV

± (0.8% of rdg + 5D)

6V

1mV

± (0.5% of rdg + 5D)

60V

10mV

600V

0.1V

± (0.8% of rdg + 5D)

Input Impedance: >100MΩ for 60 and 600mV range, 10MΩ for 6, 60 and
600V.
Overload Protection: 600V

MTTR01 User Manual

AC Voltage

RANGE

RESOLUTION

ACCURACY

60mV

10uV

± (2.0% of rdg + 10D)

600mV

0.1mV

± (1.6% of rdg + 10D)

6V

1mV

± (1.5% of rdg + 10D)

60V

10mV

600V

0.1V

Input Impedance: >100MΩ for 60 and 600mV range, 10MΩ for 6, 60 and
600V.
Frequency Range: 40Hz ~ 400Hz
Overload Protection: 600Vrms
Reading: True rms
Max. Input voltage: 750Vac rms

DC Current

RANGE

RESOLUTION

ACCURACY

Remark

600uA

0.1uA

± (1.0% of rdg + 7D)

Auto range

6000uA

1uA

60mA

0.01mA

600mA

0.1mA

6A

1mA

± (1.5% of rdg + 7D)

10A

10mA

Overload Protection:
mA: F0.4A/600V fuse
10A: F10A/600V fuse (for measurement >5A, duration need to be less than
10 sec and use no more than once every 15 min)

MTTR01 User Manual

AC Current

RANGE

RESOLUTION

ACCURACY

Remark

600uA

0.1uA

± (2.0% of rdg + 7D)

Auto range

6000uA

1uA

60mA

0.01mA

600mA

0.1mA

6A

1mA

± (2.5% of rdg + 7D)

10A

10mA

Overload Protection:
mA: F0.4A/600V fuse
10A: F10A/600V fuse (for measurement >5A, duration need to be less than
10 sec and use no more than once every 15 min)
Frequency Range: 40Hz ~ 400Hz
Reading: True rms

Resistance

RANGE

RESOLUTION

ACCURACY

Remark

600Ω

0.1Ω

± (1.0% of rdg + 5D)

Auto range

6KΩ

1Ω

± (0.8% of rdg + 5D)
60kΩ

10Ω

600kΩ

100Ω

6MΩ

1kΩ

± (1.5% of rdg + 5D)

60MΩ

10kΩ

± (3.0% of rdg + 5D)

Open Circuit Voltage: 0.7V
Overload Protection: 600Vdc/ac rms

Audible Continuity

RANGE

DESCRIPTION

Remark

Built-in buzzer sounds if resistance
is less than 30±20Ω

Open circuit voltage:
about 0.7V

Overload Protection: 600Vdc/ac rms

MTTR01 User Manual

Diode testing

RANGE

Resolution

Test Current

Remark

1mV

About 0.8mA

Open circuit voltage:
≈ 3.0V

Capacitance

RANGE

RESOLUTION

ACCURACY

40nF

10pF

± (3.5% of rdg + 5D)

400nF

100pF

± (2.5% of rdg + 5D)

4.0uF

1nF

± (3.5% of rdg + 5D)

40uF

10nF

± (4.0% of rdg + 5D)

400uF

100nF

± (5.0% of rdg + 5D)

4.0mF

1uF

Not Specified

Over-load protect: 600Vdc/ac rms

Transistor

Range

Resolution

Test condition

hFE

1

Vce ≈ 2.2V, Ib ≈ 4uA

Over-load protect: 600Vdc/ac rms

Temperature

RANGE

Scope

RESOLUTION

ACCURACY

°C

-20 to 0°C

0.1°C

± (6.0% of rdg + 5°C)

0 to 400°C

0.1°C

± (1.5% of rdg + 4°C)

400 to 1000°C

1°C

± (1.8% of rdg + 5°C)

°F

-4 to 32°F

0.1°C

± (6.0% of rdg + 5°C)

32 to 752°F

0.1°C

± (1.5% of rdg + 4°C)

752 to 1832°F

1°C

± (1.8% of rdg + 5°C)

Type K thermocouple supplied is for measuring up to 230°C only, a high
temperature type K thermocouple will required for measuring 230°C
onward.

MTTR01 User Manual

Frequency

RANGE

RESOLUTION

ACCURACY

Remark

9.999Hz

0.001Hz

±(1.0% of rdg + 5)

Auto range

99.99Hz

0.01Hz

999.9Hz

0.1Hz

9.999kHz

1Hz

99.99kHz

10Hz

999.9kHz

100Hz

9.999MHz

1kHz

Not Specified

Input Voltage: 0.5 ~3Vpp
Overload protection: 600Vrms

OPERATING INSTRUCTIONS

VOLTAGE MEASUREMENT

1. Connect red test lead to “-II-°C°F VΩHzhFE” jack, black lead to “COM”

jack.

2. Set RANGE switch to desired VOLTAGE option (AC, DC or combine).

3. Connect test leads to device or circuit being measured.

4. Turn on power of the device or circuit being measured. The voltage

value will appear on the digital display along with the voltage polarity.

Please note:

 In small range, the meter may display an unstable reading when the

test leads have not been connected to the load to be measured. It is
normal and will not affect the measurements.

 To avoid damage to the meter, don’t measure a voltage which exceeds

600Vrms.

CURRENT MEASUREMENT

1. Set the range switch to desired measuring range (uA, mA or A), if value

of the measure is unknown, always ensure to start with highest value
until appropriate reading figure is displayed.

MTTR01 User Manual

2. Plug the red probe into “10A” socket if measurement is 400mA upward

or “uA mA” socket if it is below 400mA. Plug the black probe into
“COM”. Ensure both plugs are fully inserted before taking

measurement.

3. Open the circuit to be measured. Ensure circuit is off and all capacitors

are discharged. Connect test leads in SERIES with the load in where
the current is to be measured.

4. Current reading will be displayed on LCD, press “Select” button to

choose between AC/DC measurements. For DC current measurement,
the polarity of the red probe will also be indicated.

Please note:
When the display shows the over range symbol “OL”, a higher range

must be selected. In addition “10A” function is designed for

intermittent use only.

RESISTANCE MEASUREMENT

1. Connect red lead to “-II-°C°F VΩHzhFE” and black lead to “COM”.

2. Set the range switch to “Ω ”, three functions are available by

pressing “Select”. For resistance measurement, press “Select” until “Ω”

is displayed on the screen. The resistance display is auto ranged and
can be manually adjusted by pressing the “Range” button.

3. If the resistance being measured is connected to a circuit, turn off

power and discharge all capacitors before measurement.

4. Connect test leads to the circuit being measured.

5. Read resistance value on the digital display.

Please note:

 For resistance measurements >1MΩ, the meter may take a few

seconds to stabilize the reading. This is normal for high-resistance
measurement.

 When the input is not connected, i.e. at open circuit, the symbol

“OL” will be displayed as an over range indicator.

MTTR01 User Manual

CONTINUITY TEST

1. Connect red lead to “-II-°C°F VΩHzhFE” and black lead to “COM”.

2. Set the range switch to “Ω ”, three functions are available by

pressing “Select”. For continuity testing, press “Select” until “ ” is

displayed on the screen.

3. Ensure all capacitors within the circuitry are discharged then connect

the test leads across the load to be measured.

4. If the circuit resistance measured is lower than 20Ω, the built-in

buzzer will sound. For resistance 600Ω or over, “OL” will be displayed
indicates measurement is out of range.

DIODE MEASUREMENT

1. Connect red lead to “-II-°C°F VΩHzhFE” and black lead to “COM”.

2. Set the range switch to “Ω ”, three functions are available by

pressing “Select”. For diode measurement, press “Select” until “ ” is

displayed on the screen.

3. Connect the red test lead to the anode of the diode to be measured

and black test lead to cathode.

4. The meter will show the approximate forward voltage of the diode.

If the connections are reversed, “OL” will be shown on the display.

CAPACITY MEASUREMENT

1. Connect red lead to “-II-°C°F VΩHzhFE” and black lead to “COM”.

2. Set the Range switch to “-II-”. Capacitance can be either measured

using probe or adaptor supplied. (NOTE: The polarity of the RED lead is
positive “+”)

3. Connect test probe across the capacitor and be sure the polarity of the

connection is observed. Alternatively insert capacitor into the connected

adaptor.
Please Note:
To avoid damage to the meter, disconnect circuit power and discharge all
high-voltage capacitors before measuring capacitance. The tested capacitor
should be discharged before the testing procedure. Never apply voltage to
the input, or serious damage may result.

MTTR01 User Manual

Maximum display count for capacitance is “3999”, capacitance

measurement is auto range and can be manually adjust by pressing the
“Range” button. For measurement in the max range of 4000uF, it may take
up to 30 seconds before measurement completes.

TRANSISTOR hFE MEASUREMENT

1. Set the range switch to hFE range.

2. Connect the adapter to the “COM” jack and the ““-II-°C°F VΩHzhFE”

jack. Don’t reverse the connection.

3. Identify whether the transistor is NPN or PNP type and locate Emitter,

Base and Collector lead. Insert the leads of the transistor to be tested

into the corect holes of the transistor test socket of the adaptor.

4. LCD display will show the approximate hFE value.

TEMPERATURE MEASUREMENT

1. Using the K-type thermocouple, connect red lead to “-II-°C°F

VΩHzhFE” and black lead to “COM”.

2. Set the Range switch to “°C°F”.

3. Attach the end of the thermocouple to the surface of the object that

needs measuring.

4. Check the reading on the display.

5. Change reading between Celsius and Fahrenheit by pressing the

“Select” button.
Please note: the K-type thermocouple supplied is for measuring of up to
230°C only, for measurement of 230°C and higher, a thermocouple with
higher temperature rating is required.

FREQUENCY AND DUTY CYCLE

1. Connect red probe to “-II-°C°F VΩHzhFE” and black probe to “COM”.

2. Set the range switch to “Hz Duty”.

3. Connect the testing probe across the source or load to be tested.

4. Read the reading on display.

5. Select reading between frequency and duty cycle by pressing “Hz/Duty”

button.
Please note:

MTTR01 User Manual

The display range of frequency measurement is auto from 0-10MHz, the
scope of the input signal should 0.5 – 3Vpp.
The display range of duty cycle is 0-100%, the scope of the input signal
should be 4-10Vpp.
When measuring AC voltage or AC current, frequency and duty cycle can

be toggled by press “Hz/Duty” button. To exit back to AC voltage/AC
current measurement, press and hold the “Hz/Duty” button for 2 seconds.

RELATIVE MODE

When measuring voltage, capacitance, temperature or current, relative
mode is available for measuring changes to a reference value you set.

1. Press “Rel/USB” button while measuring the reference value, the unit

will memorize the reference value and enter relative mode with “ ”

displayed on the screen and reading display with 0.

2. Now any measurement taking the unit will only display the difference

between the reference value and the current reading value.

3. To exit relative more, press “Rel/USB” again

USB MODE

In USB mode this tester allows the live reading to feed to a computer and
display on screen via the supplied software. To enter USB mode, press and

hold “Rel/USB” for 2 seconds. To exit USB mode, press and hold “Rel/USB”

again for 2 seconds.
Software is supplied or can be downloaded from the URL below:

http://cdn.avslgroup.com/downloads/600104_MTTR01-software.zip

Minimum system requirement - Windows 2000, XP, Vista & 7
Pentium 233MHz processor or faster (300MHz recommended), 512MB of
RAM, 1GB of available space on the hard disk, CD-ROM or DVD-ROM drive,
USB 1.0/2.0 port, monitor with Super VGA (800 x 600) or higher resolution.

MTTR01 User Manual

Software

http://cdn.avslgroup.com/downloads/600104_MTTR01-software.zip

MTTR01 User Manual

Setting

BATTERY AND FUSE REPLACEMENT

MTTR01 User Manual

1) Battery and fuse replacement should only be carried out after the test

leads have been disconnected and the power is off.

2) Loosen screws with a suitable screwdriver and remove case from the

bottom.

3) The meter is powered by a single 9V PP3 battery. Snap the battery

connector leads to the terminals of a new battery and reinsert the
battery into the case top. Tidy the battery leads so that they will not be
pinched by the battery cover.

4) The meter is protected by fuses:

 mA: F0.5A/600V Fast blow. Breaking capacity is 20KA.

dimensions are 38 x 10mmØ

 10A: F10A/600V Fast blow. Breaking capacity is 20KA.

dimensions are 38 x 10mmØ
Replace the cover and reinstall the three screws. Never operate the meter
unless the case bottom is fully closed.

ACCESSORIES

 Instruction manual
 Set of test leads (red and black)
 9V PP3 battery
 USB lead
 Mini CD (software)
 K type thermocouple
 Capacitor/Transistor testing adaptor

MTTR01 User Manual

COMPLIES WITH

EN61010–1:2010 CATIII

This product is classed as Electrical or Electronic equipment

and should not be disposed with other household or commercial waste

at the end of its useful life. The goods must be disposed

of according to your local council guidelines.

Errors and omissions excepted.

Copyright© 2014. AVSL Group Ltd.