Major tech MT565 User manual

INSTRUCTION MANUAL
INSULATION TESTER &
BLUETOOTH MULTIMETER
MT565

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Contents Page no
1. Introduction.......................................................................................4
2. Safety Symbols...................................................................................4
3. Safety Instructions..............................................................................5
4. Controls and Jacks..............................................................................6
5. Symbols and Annunciators...................................................................7
6. Operating Instructions.........................................................................8
6.1. DC Voltage Measurements..........................................................8
6.2. AC Voltage (Frequency, Duty Cycle) Measurement.........................9
6.3. MV Voltage Measurements.........................................................9
6.4. DC Current Measurements........................................................10
6.5. AC Current (Frequency, Duty Cycle) Measurement.......................11
6.6. Resistance Measurements........................................................12
6.7. Continuity Check.....................................................................12
6.8. Diode Test..............................................................................13
6.9. Capacitance Measurements......................................................13
6.10. Temperature Measurements.....................................................14
6.11. Frequency (Duty Cycle) Measurements (Electronic).....................14
6.12. Insulation Resistance Measurements..........................................15
6.13. Power Tools and Small Appliances..............................................15
6.14. DAR and PI Insulation Tests......................................................16
6.15. Mode/Bluetooth......................................................................17
7. Auto Ranging/Manual Range Selection................................................18
7.1. MIN/MAX...............................................................................18
7.2. Relative Mode.........................................................................18
7.3. Display Backlight.....................................................................18
7.4. Hold.......................................................................................19
7.5. Peak Hold...............................................................................19
7.6. Data Record (Store/Recall).......................................................19
7.7. Low Battery Indication.............................................................19
8. Maintenance....................................................................................20
8.1. Battery Installation..................................................................20
8.2. Replacing the Fuses.................................................................21
9. Specifications...................................................................................21
9.1. DC Voltage..............................................................................21
9.2. AC Voltage (50 to 1000Hz)........................................................21
9.3. DC Current.............................................................................22
9.4. AC Current..............................................................................22
9.5. Resistance..............................................................................22
9.6. Capacitance............................................................................21
9.7. Frequency (Electronic).............................................................23
9.8. Frequency (Electrical)..............................................................23
9.9. Duty Cycle..............................................................................23
9.10. Temperature Measurements - K-Type.........................................23
9.11. Meg OHMS.............................................................................24
9.12. Low OHMS..............................................................................24
9.13. General Specifications..............................................................25

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1. INTRODUCTION
This meter measures AC/DC Voltage, AC/DC Current, Resistance,
Capacitance, Frequency (electrical & electronic), Duty Cycle, Diode Test,
Insulation Test, and Continuity plus Thermocouple Temperature. It can
store and recall data. It features a waterproof, rugged design for heavy
duty use. Proper use and care of this meter will provide many years of
reliable service.
This symbol adjacent to another symbol, terminal or
operating device indicates that the operator must refer to an
explanation in the Operating Instructions to avoid personal
injury or damage to the meter.
This WARNING symbol indicates a potentially hazardous
situation, which if not avoided, could result in death or
serious injury.
This CAUTION symbol indicates a potentially hazardous
situation, which if not avoided, may result in damage to the
product.
This symbol advises the user that the terminal(s) so marked
must not be connected to a circuit point at which the voltage
with respect to earth ground exceeds (in this case)
1000 VAC or VDC.
This symbol adjacent to one or more terminals identifies
them as being associated with ranges that may, in normal
use, be subjected to particularly hazardous voltages. For
maximum safety, the meter and its test leads should not be
handled when these terminals are energized.
This symbol indicates that a device is protected throughout
by double insulation or reinforced insulation.
MAX
1000V
2. SAFETY SYMBOLS
PER IEC1010 OVERVOLTAGE INSTALLATION CATEGORY
OVERVOLTAGE CATEGORY I
Equipment of OVERVOLTAGE CATEGORY I is equipment for connection to
circuits in which measures are taken to limit the transient overvoltages to
an appropriate low level.
Note – Examples include protected electronic circuits.
OVERVOLTAGE CATEGORY II
Equipment of OVERVOLTAGE CATEGORY II is energy-consuming
equipment to be supplied from the fixed installation.
Note – Examples include household, office, and laboratory appliances.
OVERVOLTAGE CATEGORY III

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Equipment of OVERVOLTAGE CATEGORY III is equipment in fixed
installations.
Note – Examples include switches in the fixed installation and some
equipment for industrial use with permanent connection to the fixed
installation.
OVERVOLTAGE CATEGORY IV
Equipment of OVERVOLTAGE CATEGORY IV is for use at the origin of the
installation.
Note – Examples include electricity meters and primary over-current
protection equipment
3. SAFETY INSTRUCTIONS
This meter has been designed for safe use, but must be operated with
caution. The rules listed below must be carefully followed for safe
operation.
1. NEVER apply voltage or current to the meter that exceeds the specified
maximum:
2. USE EXTREME CAUTION when working with high voltages.
3. DO NOT measure voltage if the voltage on the "COM" input jack
exceeds 1000V above earth ground.
4. NEVER connect the meter leads across a voltage source while the
function switch is in the current, resistance, or diode mode. Doing so can
damage the meter.
5. ALWAYS discharge filter capacitors in power supplies and disconnect
the power when making resistance or diode tests.
6. ALWAYS turn off the power and disconnect the test leads before
opening the covers to replace the fuse or batteries.
7. NEVER operate the meter unless the back cover and the battery and
fuse covers are in place and fastened securely.
Function Maximum Input
V DC or V AC 1000V DC/AC RMS
mA AC/DC 500mA 1000V fast acting fuse
A AC/DC 10A 1000V fast acting fuse
Frequency, Resistance, Capacitance, 1000V DC/AC RMS
Duty Cycle, Diode Test, Continuity
Temperature 1000V DC/AC RMS
Surge Protection: 8kV peak per IEC 61010
Input Protection Limits

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If the equipment is used in a manner not specified by the manufacturer,
the protection provided by the equipment may be impaired.
4. CONTROLS AND JACKS
1 - mA, μA, temp,INS and Rlow
input jacks
2 - 10A input jacks
3 - 50,000 count LCD display
4 - STORE(VIEW) button
5 - TIME/PI/DAR(RANGE/DOWN)
button
6 - MODE(BLUE) button
7 - INSULATION TEST button
8 - INSULATION LOCK button
9 - COM input jack
10 - Input Terminal to operate the
switched probe
11 - Positive input jack
12 - REL button
13 - MAX/MIN(PEAK/DOWN) button
14 - HOLD/Backlight/DEL button
15 - Function switch
Note: Tilt stand and battery compartment are on rear of unit.

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5. SYMBOLS AND ANNUNCIATORS
Low pass filtering
Timing symbol
Backlight
bargraph
Continuity
Diode test
Battery status
9
nano (10- ) (capacitance)
6
micro (10- ) (amps, cap)
3
milli (10- ) (volts, amps)
Amps
3
kilo (10 ) (ohms)
Farads (capacitance)
6
mega (10 ) (ohms)
Ohms
Peak Hold
Hz Hertz (frequency)
Volts
Percent (duty ratio)
Relative
Alternating current
Direct current
Degrees Fahrenheit
Degrees Centigrade
Auto Range Timing
Display hold
Minimum
Maximum
Alternating current + Direct current
True RMS
Store
Recall
Auto Range
Resistance low operator indication
Bluetooth
n
µ
m
A
k
F
M
Ω
PEAK
REL
AC
DC
MAX
AUTO
HOLD
AUTO
MIN
AC + DC
°F
°C
%
Hz
V
TRMS
LOG
VIEW

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6. OPERATING INSTRUCTIONS
WARNING: Risk of electrocution. High-voltage circuits, both AC and
DC, are very dangerous and should be measured with great care.
1. ALWAYS turn the function switch to the OFF position when the meter is
not in use.
2. If "OL" appears in the display during a measurement, the value
exceeds the range you have selected. Change to a higher range.
6.1. DC VOLTAGE MEASUREMENTS
CAUTION: Do not measure DC voltages if a motor on the circuit is
being switched ON or OFF. Large voltage surges may occur
that can damage the meter.
1. Set the function switch to the position.
2. Press the MODE button to indicate “DC”.
3. Insert the black test lead banana plug into
the negative COM jack. Insert the red test
lead banana plug into the positive V jack.
4. Touch the black test probe tip to the
negative side of the circuit. Touch the red
test probe tip to the positive side of the
circuit.
5. Read the voltage on the display.

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6.2. AC VOLTAGE (FREQUENCY, DUTY CYCLE) MEASUREMENT
CAUTION: Do not measure AC voltages if a motor on the circuit is
being switched ON or OFF. Large voltage surges may occur
that can damage the meter.
1. Set the function switch to the position.
2. Press the MODE button to indicate “AC”.
3. Insert the black test lead banana plug into the
negative COM jack. Insert red test lead banana
plug into the positive V jack.
4. Touch the black test probe tip to the neutral side
of the circuit. Touch the red test probe tip to the
“live” side of the circuit.
5. Read the voltage in the display.
6. Press the MODE button to indicate “Hz(%)”.
7. Read the frequency on the main display and the
duty on the auxiliary display.
WARNING: Risk of Electrocution. The probe tips may not be long
enough to contact the live parts inside some 240V outlets for appliances
because the contacts are recessed deep in the outlets. As a result, the
reading may show 0 volts when the outlet actually has voltage on it. Make
sure the probe tips are touching the metal contacts inside the outlet
before assuming that no voltage is present.
CAUTION: Do not measure mV voltages if a motor on the circuit is
being switched ON or OFF. Large voltage surges may occur
that can damage the meter.
6.3. MV VOLTAGE MEASUREMENTS
1. Set the function switch to the mV position.
2. Press the MODE button to indicate “DC”or
“AC ”.
3. Insert the black test lead banana plug into the
negative COM jack. Insert the red test lead
banana plug into the positive V jack.
4. Touch the black test probe tip to the negative
side of the circuit. Touch the red test probe tip
to the positive side of the circuit.
5. Read the mV voltage on the display.

1010
6.4. DC CURRENT MEASUREMENTS
CAUTION: Do not make 20A current measurements for longer than 30
seconds. Exceeding 30 seconds may cause damage to the
meter and/or the test leads.
1. Insert the black test lead banana plug into
the negative COM jack.
2. For current measurements up to 5000μA
DC, set the function switch to the μA
position and insert the red test lead banana
plug into the μA/mA jack.
3. For current measurements up to 400mA DC,
set the function switch to the mA position
and insert the red test lead banana plug into
the μA/mA jack.
4. For current measurements up to 20A DC,
set the function switch to the 10A/HZ/%
position and insert the red test lead banana
plug into the 10A jack.
5. Press the MODE button to indicate “DC” on
the display.
6. Remove power from the circuit under test,
then open up the circuit at the point where
you wish to measure current.
7. Connect the black test probe tip and the red
test probe tip in series to the circuit under
test.
8. Apply power to the circuit.
9. Read the current on the display.

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6.5. AC CURRENT (FREQUENCY, DUTY CYCLE) MEASUREMENTS
CAUTION: Do not make 20A current measurements for longer than 30
seconds. Exceeding 30 seconds may cause damage to the
meter and/or the test leads.
1. Insert the black test lead banana plug into
the negative COM jack.
2. For current measurements up to 5000μA
AC, set the function switch to the yellow μA
position and insert the red test lead banana
plug into the μA/mA jack.
3. For current measurements up to 500mA
AC, set the function switch to the mA
position and insert the red test lead banana
plug into the μA/mA jack.
4. For current measurements up to 20A AC,
set the function switch to the yellow
10A/HZ/% position and insert the red
test lead banana plug into the 10A jack.
5. Press the MODE button to indicate “AC” on
the display.
6. Remove power from the circuit under test,
then open up the circuit at the point where
you wish to measure current.
7. Connect the black test probe tip and the
red test probe tip in series to the circuit
under test.
8. Apply power to the circuit.
9. Read the current on the display.
10. In the 10A and mA function ,press the
MODE button to indicate “Hz(%)”.
11. Read the frequency on the main display
and the duty on the auxiliary display .

6.6. RESISTANCE MEASUREMENTS
WARNING: To avoid electric shock, disconnect power to the unit under
test and discharge all capacitors before taking any
resistance measurements. Remove the batteries and
unplug the line cords.
6.7. CONTINUITY CHECK
1. Set the function switch to the position.
2. Insert the black lead banana plug into the negative COM jack. Insert
the red test lead banana plug into the positive Ω jack.
3. Press the MODE button to indicate “ ” and “Ω” on the display
4. Touch the test probe tips to the circuit or wire you wish to check.
5. If the resistance is less than approximately 50Ω, the audible signal will
sound. If the circuit is open, the display will indicate “OL”.
1012
1. Set the function switch to the position.
2. Insert the black test lead banana plug into the
negative COM jack. Insert the red test lead
banana plug into the positive Ω jack.
3. Press the MODE button to indicate “Ω” on the
display.
4. Touch the test probe tips across the circuit or
part under test. It is best to disconnect one side
of the part under test so the rest of the circuit
will not interfere with the resistance reading.
5. Read the resistance on the display.
WARNING: To avoid electric shock, never measure continuity on circuits
or wires that have voltage on them.
Ω
CAP
Ω
CAP

6.8. DIODE TEST
1. Set the function switch to the position.
2. Insert the black test lead banana plug into the
negative COM jack and the red test lead banana
plug into the positive Ω jack.
3. Press the MODE button to indicate “ ” and “V”
on the display.
4. Touch the test probes to the diode under test.
Forward voltage will typically indicate 0.400 to
0.700V. Reverse voltage will indicate “OL”. Shorted
devices will indicate near 0V and an open device will
indicate “OL” in both polarities.
6.9. CAPACITANCE MEASUREMENTS
WARNING: To avoid electric shock, disconnect power to the unitunder
test and discharge all capacitors before taking any
capacitance measurements. Remove the batteries and
unplug the line cords.
1. Set the rotary function switch to the
position.
2. Insert the black test lead banana plug into the
negative COM jack.
3. Insert the red test lead banana plug into the
positive V jack.
4. Press the MODE button to indicate “F”
5. Touch the test leads to the capacitor to be
tested. Read the capacitance value on the
display.
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Ω
CAP
Ω
CAP

6.10. TEMPERATURE MEASUREMENTS
1. Set the function switch to the Temp position.
2. Insert the Temperature Probe into the input jacks,
making sure to observe the correct polarity.
3. Press the MODE button to indicate “ºC” or “ºF”
4. Touch the Temperature Probe head to the part
whose temperature you wish to measure. Keep the
probe touching the part under test until the reading
stabilizes (about 30 seconds).
5. Read the temperature on the display.
Note: The temperature probe is fitted with a type K
mini connector. A mini connector to banana
connector adaptor is supplied for connection to
the input banana jacks.
6.11. FREQUENCY (DUTY CYCLE) MEASUREMENTS (ELECTRONIC)
1. Set the rotary function switch to the Hz/%
position.
2. Insert the black lead banana plug into the
negative COM jack and the red test lead banana
plug into the positive Hz jack.
3. Touch the test probe tips to the circuit under
test.
4. Read the frequency on the display.
5. Press the MODE button to indicate “%”.
6. Read the % duty cycle on the display.
1014

6.12. INSULATION RESISTANCE MEASUREMENTS
1. Set the rotary function switch to the INSULATION position ,and
Press the RANGE button to chose one of the voltage which display on
the left .
2. Connect two testing lines to the tested.
3. Push down and hold the “TEST” button to be test. If there is voltage
(AC/DC) over 30V, the insulation test will not work. If there is no
voltage or charge and the voltage is lower than 30V, the insulation test
will proceed and the voltage injected will be on the primary display,
the insulation resistance in MΩ is indicated in-phase with analog bar;
on the auxiliary display, the tested insulation voltage in V (DC) is
indicated, the symbol “ ” flashes and the buzzer beeps frequently
4. Releasing the “TEST” button or pushing down the “TEST” button in
the “LOCK “ status will exit from the “LOCK” status and stop the
insulation test.
5. The meter will subsequently discharge the balance insulation voltage
of the tested through the inner switch of the meter.
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6.13. POWER TOOLS AND SMALL APPLIANCES
This test would also apply to other similar equipment that has a line cord.
For double insulated power tools, the megohmmeter lead shown
connected to the housing would be connected to some metal part of the
tool (e.g. chuck, blade).
Note:The switch of the device must be in the “ON”position and the main
power should be disconnected.
MOTORS
AC-Disconnect the motor from the line by disconnecting the wires at the
motor terminals or by opening the main switch. If the main switch is used
and the motor also has a starter then the starter must be held, by some
means, in the “ON” position. In the latter case, the measured resistance
will include the resistance of the motor, wire and all other components
between the motor and the main switch. If Low Ohms is indicated, the
motor and other components should be checked individually. If the motor
is disconnected at the motor terminals, connect one megohmmeter lead
to the grounded motor housing and the other lead to One of the motor
leads. DC-Disconnect the motor from the line. To test the brush rigging,
field coils and armature connect one megohmmeter lead to the grounded
motor housing and the other lead to the brush on the commutator. If the
resistance measurement indicates a low reading, raise the brushes off the
commutator and separately test the armature, field coils and brush

rigging by connecting one megohmmeter lead to each of them
individually, leaving the other connected to the grounded motor housing.
The above also applies to DC Generators.
CABLES
Disconnect the cable from the line. Also disconnect opposite end to avoid
errors due to leakage from other equipment. Check each conductor to
ground and /or lead sheath by connecting one megohmmeter lead to a
ground and /or lead sheather and the other megohmmeter lead to each
of the conductors in turn. Check insulation resistance between conductors
by connecting megohmmeter leads to conductors in pairs.
1016
6.14. DAR AND PI INSULATION TESTS
DAR and PI tests are measurements of resistance over time expressed as
a ratio of resistance at time t12 divided by resistance at time t1. The
assumption is that insulation temperature does not vary widely over the
duration of the test so the resulting DAR and/or PI value are temperature
independent. Testing should be done at or below 40°C, 104°F for this
assumption to hold.
1. Set the rotary function to the INSULATION position.
2. Press the MODE button to select the voltage (50/100/250/500/1000V)
3. Press the T-PI-DAR button to select PI, DAR or t, when the PI OR

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DAR is selected, the lock function will be active.
4. Connect the two testing line to be tested.
5. When the PI OR DAR functional test is complete, the instrument will
automatically exit the test and display the result on the left side of the
LCD display.
DAR = IR60s/IR15s
Insulation Condition DAR Result
Poor <1
Acceptable 1 - 1.4
Excellent 1.4 - 1.6
PI = IR 10min/IR 1 min
Insulation Condition PI Result
Poor <1
Questionable 1 - 2
Acceptable 2 - 4
Excellent <4
6.15. MODE/BLUETOOTH
Press the MODE button to select AC or DC, Frequency or Duty Cycle,
Resistance, Continuity or Diode Test and °C or °F.
Bluetooth® allows readings to be displayed and stored on mobile devices.
To activate Bluetooth®, press and hold the MODE button until the " "
symbol appears on the LCD display. Bluetooth® should be disabled when
not connected to a mobile device in order to conserve battery power. To
turn off Bluetooth®, press and hold the MODE button until the " "
symbol no longer appears on the display.
Note: Bluetooth Connect:
1. Turn on the Bluetooth function on the instrument using Menu Button
2. Turn on the Bluetooth of the Smartphone, press the Meterbox Pro
icon and enter into the home interface. Then press Connect Device
icon on the home interface, Bluetooth device name will appear.
3. Touch the device name listed in Bluetooth devices list to connect the
meter.
Detailed information about Meterbox Pro available on the APP help file.
Meterbox Pro for Android: Please search in Google Play with keyword
Meterbox Pro, download and run.
Meterbox Pro for iOS: Please search in the Apple Store with keyword
Meterbox Pro, download and run.

1018
7.2. RELATIVE MODE
The relative measurement feature allows you to make measurements
relative to a stored reference value. A reference voltage, current, etc.
can be stored and measurements made in comparison to that value.
The displayed value is the difference between the reference value and
the measured value. Note: Relative mode operated in the Rlow
function is zero.
1. Perform the measurement as described in the operating instructions.
2. Press the REL button to store the reading in the display and the "REL"
indicator will appear on the display.
3. The auxiliary display show REL TEST value and Main display show the
current value.
4. Press the REL button to exit the relative mode.
7.1. MAX/MIN
1. Press the MAX/MIN key to activate the MAX/MIN recording mode.
The display icon "MAX" will appear. The meter auxiliary display will
display and hold the maximum reading and will update only when a
new “max” occurs at the same time the minimum values are calculated
as well, press the MAX/MIN button to alternately display the
maximum or minimum values.
2. To exit MAX/MIN mode press and hold the MAX/MIN button for
about two seconds.
7. AUTORANGING/MANUAL RANGE SELECTION
When the meter is first turned on, it automatically goes into AutoRanging.
This automatically selects the best range for the measurements being
made and is generally the best mode for most
measurements. For measurement situations requiring that a range be
manually selected, perform the following:
1. Press the RANGE key. The “AUTO” display indicator will turn off.
2. Press the RANGE key to step through the available ranges until you
select the range you want.
3. To exit the Manual Ranging mode and return to Autoranging, press
and hold RANGE button.
7.3. DISPLAY BACKLIGHT
Press the button to turn the backlight on or off. The backlight will
automatically turn off after 30 SECONDS. Press and hold the button to
switch backlight mode.

7.6. DATA RECORD (STORE/RECALL)
1. LOG/VIEW function
In the normal testing mode, press and hold STORE/VIEW button for
about two seconds into STORE OR VIEW function sequence, such as,
manual LOG->TIME SET FOR auto LOG->auto LOG->VIEW
IN manual LOG function, press the STORE/VIEW button once to store
one data.
2. IN TIME SET function
Press the button once can increase the recording interval, press the
000button once to decrease the recording interval. In auto LOG
function, press the STORE/VIEW button once to active au to LOG
function, at the same time,”LOG A”flashes,press it once again to s top
auto log.
3. IN VIEW function
Press the button once to view next data, press the button once
to view last data press the button once to delete all the log data.
7.7. LOW BATTERY INDICATION
When the icon flashes in the display , the battery should be
replaced.
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7.4. HOLD
The hold function freezes the reading in the display. Press the HOLD
key momentarily to activate or to exit the HOLD function.
7.5. PEAK HOLD
The Peak Hold function captures the peak voltage or current. The meter
can capture negative or positive peaks as fast as 1 millisecond in duration.
Press and hold for about two seconds the PEAK button, “PEAK” and
“MAX” will display. Press it again, “MIN” will display but “MAX”will
disappear. The meter will update the display each time a lower negative
peak and a higher positive voltage occurs. Press and hold the button
to exit the PEAK HOLD mode. Auto Power Off feature will be disabled
automatically in this mode.

8.1. BATTERY INSTALLATION
1. Turn power off and disconnect the test leads from the meter.
2. Open the rear battery cover by removing two screws (B) using a
Phillips head screwdriver.
3. Insert the battery into the battery holder, observing the correct
polarity.
4. Put the battery cover back in place. Secure with the screws.
WARNING: To avoid electric shock, disconnect the test leads from
anysource of voltage before removing the battery cover.
WARNING: To avoid electric shock, do not operate the meter until the
battery cover is in place and fastened securely.
NOTE: If your meter does not work properly, check the fuses and
batteries to make sure that they are still good and that they are
properly inserted.
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WARNING: To avoid electric shock, disconnect the test leads from any
source of voltage before removing the back cover or the
battery or fuse covers.
8. MAINTENANCE
WARNING: To avoid electric shock, do not operate your meter until the
battery and fuse covers are in place and fastened securely.
This MultiMeter is designed to provide years of dependable service, if the
following care instructions are performed:
1. KEEP THE METER DRY. If it gets wet, wipe it off.
2. USE AND STORE THE METER IN NORMAL TEMPERATURES.
Temperature extremes can shorten the life of the electronic parts and
distort or melt plastic parts.
3. HANDLE THE METER GENTLY AND CAREFULLY. Dropping it can
damage the electronic parts or the case.
4. KEEP THE METER CLEAN. Wipe the case occasionally with a damp
cloth. DO NOT use chemicals, cleaning solvents, or detergents.
5. USE ONLY FRESH BATTERIES OF THE RECOMMENDED SIZE
AND TYPE. Remove old or weak batteries so they do not leak and
damage the unit.