MAJOR TECH MTC45 2-In-1 Tone and Probe and Multimeter Instruction Manual

: June 10, 2024
: MAJOR TECH

Table of Contents

MAJOR TECH MTC45 2-In-1 Tone and Probe and Multimeter
INTRODUCTION
SAFETY
METER DESCRIPTION
SPECIFICATIONS
OPERATION
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

MAJOR TECH MTC45 2-In-1 Tone and Probe and Multimeter

MAJOR -ECH MTC45-2-In-1-Tone-and-Probe -product-image

INTRODUCTION

2-in-1 Wire/Cable Tester & Multimeter is a innovative tester that allows the user easy to measure DC/AC Voltage/Current, Resistance, Continuity, diode and verify the cable continuity, quickly trace and identify cables or wires within a group and also check the operation of phone lines. The Wire/Cable Tester includes a Tone generator and an Amplifier probe. Proper use and care of this meter will provide years of reliable service.

FEATURES

2-in-1 Wire/Cable Tester & Multimeter
Measures DC/AC Voltage, DC/AC Current, Resistance, Continuity, Diode and Wire/Cable tester
3-1/2 digit (2000 count) LCD display for multimeter functions
LED Displays the operation of phone cable lines

Low battery indication
Selectable continuous or variable tone generation and alligator clips, RJ45/RJ11 modular

CAT III 600V; CAT II 1000V
Provides easy to read continuity and fault status display
Tests include wire trace, continuity test, clear/busy/ringing line test and tip/ring identification
Wire/Cable tester has the function of 220V High voltage protection
Auto ranging with auto power off for multimeter functions

SAFETY

International Safety Symbols

This symbol, adjacent to another symbol or terminal, indicates the user must refer to the manual for further information.
MAJOR -ECH MTC45-2-In-1-Tone-and-Probe -04 This symbol, adjacent to a terminal, indicates that, under normal use, hazardous voltages may be present.
Double insulation

Safety Precautions

Improper use of this meter can cause damage, shock, injury or death. Read and understand this users manual before operating the meter.
Make sure any covers or battery covers are properly closed and secured.
Always disconnect the test leads from any voltage source before replacing the battery or fuses.
Do not exceed the maximum rated input limits.
Input Limits

Function| Maximum Input
V DC or V AC| 600V DC/AC
μA AC/DC| 200mA/250V fast acting Fuse
Resistance, Diode & Continuity Test| 600V DC/AC
Always discharge capacitors and remove power from the device under test before performing Diode, Resistance or Continuity tests.
Remove the battery from the meter if the meter is to be stored for long periods.

METER DESCRIPTION

Wire/Cable tester part Description (1~7 & 16~20)

Modular connector RJ11
Test leads
LED display for telephone cable line condition
LED display for low battery of Tone Generator
Cont Switch for continuity test
Tone Switch for Tone generating
Sel Switch for tones selections
Digital multimeter part Description (8~15):
Function switch
3 ½ Digit (2000 count) LCD display for DMM functions
MODE button
MAX Hold button
COM input jack
Data Hold button
V, Ω,uA,mA input jack
Battery Compartment (rear)
Probe tip
Volume/Sensitivity control
Power button
Battery compartment (rear)
Headphone jack

SPECIFICATIONS

Electrical Specifications

Function Range Accuracy

DC Voltage| 200mV,| ±(0.5% rdg + 3d)
2.000V, 20.00V,| ±(1.0% rdg + 3d)
200.0V, 600V| ±(1.0% rdg + 3d)
AC Voltage

50-60Hz

2.000kΩ, 20.00kΩ

| ±(0.8% rdg + 5d)
200.0kΩ| ±(1.2% rdg + 3d)
2.000MΩ| ±(2.0% rdg + 5d)
20.00MΩ| ±(5.0% rdg + 8d)

Function Range

Max input voltage| 600V AC/DC
Diode Test| Test current 1mA max., open circuit voltage of 1.5V typical
Continuity Check| Audible signal if the resistance is <150Ω
Display| 2000 count 3 -1/2 digit LCD
Over range indication| LCD displays “OL”
Polarity| Minus (-) sign for negative polarity.
Low Battery Indication| “BAT” symbol indicates low battery condition.
Input Impedance| >7.5MΩ (VDC & VAC)
AC Response| Average responding
ACV Bandwidth| 50Hz to 60Hz
Auto Power Off| 15 minutes (approximately)
Fuse| mA, μA ranges; 0.2A/250V fast acting Fuse
Tone output| Continuity: 800 – 860Hz – Wobble:800-1050HZ
Batteries| Two 9V batteries and two “AAA” batteries
Operating Temperature| 0°C to 40°C (32°F to 104°F)
Storage Temperature| -10°C to 50°C (14°F to 122°F)
Weight| 328g
Size| 162 x 74.5 x 44.0mm
Standard| IEC61010-1 CAT III-600V Pollution degree II, CE Approved

OPERATION

Auto Ranging Multimeter
AC/DC Voltage Measurements

CAUTION: Do not measure AC/ DC voltages if a motor on the circuit is being switched ON or OFF. Large voltage surges may occur that can damage the meter.

Insert the black test lead into the negative COM terminal and the red test lead into the positive V terminal.
Set the function switch to VAC or VDC position.
Connect the test leads in parallel to the circuit under test.
Read the voltage measurement on the LCD display.

AC/DC Current Measurements

Set the function switch to the μA/mA position.
Insert the black test lead into the negative COM terminal and the red test lead into the positive μA/mA terminal.
For current measurements up to 2000μA DC/AC, set the function switch to the mA position
Press the MODE button to indicate “DC” / “AC” on the display.
Remove power from the circuit under test, then open up the circuit at the point where you wish to measure current.
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.
Apply power to the circuit.
Read the current on the display

Resistance Measurement
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.

Set the function switch to the Ω position.
Insert the black test lead into the negative COM terminal and the red test lead into the positive Ω terminal.
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.
Read the resistance on the display

Continuity Check
WARNING: To avoid electric shock, never measure continuity on circuits or wires that have voltage on them.

Set the function switch to the position.
Insert the black test lead into the negative COM terminal and the red test lead into the positive Ω terminal.
Press the MODE button to indicate on the display
Touch the test probe tips to the circuit or wire you wish to check.
If the resistance is less than approximately 150Ω, the audible signal will sound. If the circuit is open, the display will indicate “OL”.

Diode Test

Set the function switch to the position.
Press the MODE Δ button to indicate on the display under test.
Touch the test probes to the diode. 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

MAX Hold Button
To hold the highest reading on the LCD.

Press the MAX hold button. The meter reading will not change as readings change
Press the MAX hold button again to return to normal operation.

Hold Button
The Data Hold function allows the meter to “freeze” a measurement for later reference.

Press the “DATA HOLD” button to “freeze” the display, the “HOLD” indicator will appear.
Press the “DATA HOLD” button to return to normal operation.

Auto Power Off
The auto off feature will turn the meter off after 15 minutes.

Replacing the Battery

Remove the bottom cover and secure the screw.
Replace old battery with new Two 1.5V AAA & 9V type battery.
Replace the bottom cover and secure the screw.

Replacing the Fuses
WARNING: To avoid electric shock, disconnect the test leads from any source of voltage before removing the fuse cover.

Disconnect the test leads from the meter.
Remove the protective rubber holster.
Remove the battery cover (two “B” screws) and the battery.
Remove the four “A” screws securing the rear cover.
Lift the center circuit board straight up from the connectors to gain access to the fuse holders.
Gently remove the old fuse and install the new fuse into the holder.
Always use a fuse of the proper size and value (0.2A/250V fast blow for the 200mA range).
Align the center board with the connectors and gently press into place.
Replace and secure the rear cover, battery and battery cover.

Wire/Cable tester (Tone generator and Amplifier probe)
Note: Make sure the battery power is sufficient. Insufficient battery power will lead to dimmed LEDs and incorrect results.

Cable/Wire tracing

Connect the tone generator to the cable
- For cables terminated at one end, connect the red alligator clip to a wire and the black alligator clip to equipment ground.
- For unterminated cables, connect the red alligator clip to one wire and the black alligator clip to another wire.
- For cables with modular connectors, plug the RJ11 connectors directly into the matching cable connectors.
Set the Tone Switch on (the Tone switch on down position).
On the amplifier probe, press and hold the side on/off button.
Hold the insulated probe tip against the wire in question to pick up the signal generated by the tone generator.
Rotate the volume/sensitivity control on the top of the probe for the appropriate level and sensitivity to identify and trace the wire.
The tone will be the loudest on the wires connected to the tone generator.

Note: A headphone jack is located on the bottom of the probe.

Identifying telephone cable Tip and Ring – Using Alligator Clips

Switch the tone generator to the OFF position (the Tone, Sel, Cont switch on up position)
Connect the red test lead to one line and the black lead to the other line.
The LED color indicates the connection to the RED test lead as: GREEN = Ring side, RED = Tip side.

Identifying Telephone Cable Tip and Ring – Using the RJ-11 Connectors

Switch the tone generator to the OFF position (the Tone, Sel, Cont switch on up position)
Connect the RJ-11 connector mating cable connector.
The LED color indicates the condition of the telephone jack wiring. GREEN = Jack wired properly, RED = Jack wired with reversed polarity.

Identifying Telephone Cable Line Condition

Switch the tone generator to the OFF position (the Tone, Sel, Cont switch on up position)
Connect the red test lead to the RING side and the black test lead to the TIP side.
The LED will indicate line condition by:
GREEN = CLEAR , OFF = BUSY, Flickering YELLOW = RINGING
Switch the tone generator’s Cont switch to down position to terminate the call.

Continuity Testing
WARNING: To avoid electric shock before testing for continuity, check line polarity to ensure that the line is not powered.

Connect the test leads to the wire pair .
Switch the Cont Switch to down position.
The LED will glow bright GREEN for a low resistance or continuity. The LED will glow less brightly as the resistance increases and will extinguish at approximately 10,000ohms.

Tone Selection
The output of the tone generator can be set to continuous or wobble. Use the Sel Switch on the Tone-generator to change the tone of output to “continuity” (down position) or “wobble” (up position)

Low Battery Indicator
When a low battery condition is detected. Low battery LED will light up.

Battery Replacement

The tone generator and amplifier probe require one standard/Alkaline 9 Volt battery for operation.
Slide back the battery cover to replace new battery.

CAUTION:

When the test is over, make sure all the switches are set to the off position (up position).
Leaving the battery in the tester for long periods of time without use could drain power from the battery

MAJOR TECH (PTY) LTD

South Africa