Major tech MTC50 User manual

Instruction Manual
MTC50
2-in-1 LAN Tester & Multimeter

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Contents
Introduction..............................................................3
Features...................................................................3
Safety Precautions…………………………………….4
Meter Description.....................................................5
Electrical Specification.............................................6
Operation……………………………………..………..8
Multi-Network Modular Cable Tester………………11

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Introduction
The 2-in-1 LAN Tester & Multimeter is an innovative tester
that allows the user to easily measure DC/AC Voltage and
Current, Resistance, Continuity, diode and verify the cable
continuity; open short and cross-connect. The included
remote terminator allows the user to test installed cable
either at a wall jack or a patch panel adding up to value and
convenience. Proper use and care of this meter will provide
years of reliable service.
Features:
•2-in-1 LAN Tester & Multimeter
•Measures DC/AC Voltage, DC/AC Current, Resistance,
Continuity, diode and LAN tester
•3½digit (2000 count) LCD display for multimeter functions
•LED Displays the actual pin configuration of 10/100
BASE-T (Category 5) AND 10BASE-2 Thin Ethernet,
RJ45/RJ11 modular, 258A, tia-568a/568b and Token
Ring cables
•Double Molded housing
•CAT III 600V; CAT II 1000V
•Provides easy to read continuity and fault status display
•Checks for continuity, open wire, ground wire, shorted
pair and crossed pair faults
•Allows for remote testing of installed cables from wall
jack or patch panel
•Auto or manual scanning for LAN tester
•Autoranging with auto power off for multimeter functions

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Safety
International Safety Symbols
This symbol, adjacent to another symbol or terminal,
indicates the user must refer to the manual for further
information.
This symbol, adjacent to a terminal, indicates that,
under normal use, hazardous voltages may be
present.
Double insulation
Safety Precautions
1. Improper use of this meter can cause damage, shock, injury or
death. Read and understand this users manual before
operating the meter.
2. Make sure any covers or battery doors are properly closed and
secured.
3. Always disconnect the test leads from any voltage source
before replacing the battery or fuses.
4. 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
5. Use great care when making measurements if the voltages are
greater than 25VAC rms or 35VDC. These voltages are
considered a shock hazard.
6. Always discharge capacitors and remove power from the
device under test before performing Diode, Resistance or
Continuity tests.
7. Remove the battery from the meter if the meter is to be stored
for long periods.

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Meter Description
LAN Tester part Description:
1. Remote terminator with LED display for receiving end
2. Jack RJ45
3. LAN-connector
4. Jack RJ45
5. Jack RJ45
6. Led display for sourcing end (Jack 1)
& Led display for receiving end (Jack 2)
7. Test switch for auto scan
8. LAN tester Power switch
9. Test switch for manual scan
10. Function switch

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11. 3 1/2 Digit (2000 count) LCD display for DMM functions
12. MODE button
13. MAX Hold button
14. Data Hold button
15. COM input jack
16. V,Ω,uA,mA input jack
17. Battery Cover
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
2.000V, 20.00V
±(1.0% rdg + 5d)
200.0V, 600V
±
(1.5% rdg + 10d)
DC Current
200.0µA,
2000µA
±(1.5% rdg + 3d)
20.00mA,
200.0mA
±(2.0% rdg + 3d)
AC Current
200.0µA,
2000µA
±(1.8% rdg + 8d)
20.00mA,
200.0mA
±(2.5% rdg + 8d)
Resistance
200.0
Ω ±
(0.8% rdg + 5d)
2.000k
Ω
,
20.00k
Ω
, 200.0k
Ω
±
(1.2% rdg + 3d)
2.000M
Ω ±
(2.0% rdg + 5d)
20.00M
Ω ±
(5.0% rdg + 8d)

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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
Batteries
9V battery and two “AAA” batteries
Operating Temperature
32oF to 104oF (0oC to 40oC)
Storage Temperature
14oF to 122oF (-10oC to 50oC)
Weight
308g
Size
162x74.5x44.0mm
Standard
IEC1010 CAT III-600V Pollution
degree II, CE Approved

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Operation
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.
1. Insert the black test lead into the negative COM terminal
and the red test lead into the positive V terminal.
2. Set the function switch to VAC or VDC position.
3. Connect the test leads in parallel to the circuit under
test.
4. Read the voltage measurement on the LCD display.
AC/DC CURRENT MEASUREMENTS
1. Set the function switch to the µA/mA position.
2. Insert the black test lead into the negative COM
terminal and the red test lead into the positive µA/mA
terminal.
3. For current measurements up to 2000µA DC/AC, set
the function switch to the mA position
4. Press the MODE button to indicate “DC” / “AC” on the
display.
5. Remove power from the circuit under test, then open
up the circuit at the point where you wish to measure
current.
6. 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.
7. Apply power to the circuit.
8. Read the current in the display

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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.
1. Set the function switch to the Ωposition.
2. Insert the black test lead into the negative COM terminal
and the red test lead into the positive Ω terminal.
3. 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.
4. Read the resistance in the display
CONTINUITY CHECK
WARNING: To avoid electric shock, never measure
continuity on circuits or wires that have voltage on them.
1. Set the function switch to the position.
2. Insert the black test lead into the negative COM terminal
and the red test lead into the positive Ω terminal.
3. Press the MODE button to indicate 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 150Ω, the
audible signal will sound. If the circuit is open, the display
will indicate “OL”.
DIODE TEST
1. Set the function switch to the position.
2. Press the MODE button to Touch the test probes to the diode
indicate on the display. under test. Forward voltage will

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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
1. Press the MAX hold button. The meter reading will not
change as readings change
2. 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
1. Press the “DATA HOLD” button to “freeze” the display, the
“HOLD” indicator will appear.
2. 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
1. Remove the bottom cover and secure the screw.
2. Replace old batteries with fresh Two 1.5V AAA & 9V
type battery.
3. Replace the bottom cover and secure the screw.

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REPLACING THE FUSES
WARNING: To avoid electric shock, disconnect the test
leads from any source of voltage before removing the fuse
cover.
1. Disconnect the test leads from the meter.
2. Remove the protective rubber holster.
3. Remove the battery cover (two “B” screws) and the
battery.
4. Remove the four “A” screws securing the rear cover.
5. Lift the center circuit board straight up from the
connectors to gain access to the fuse holders.
6. Gently remove the old fuse and install the new fuse into
the holder.
7. Always use a fuse of the proper size and value
(0.2A/250V fast blow for the 200mA range).
8. Align the center board with the connectors and gently
press into place.
9. Replace and secure the rear cover, battery and battery
cover.
Multi-Network Modular Cable Tester Operation
The Multi-Network Modular Cable Tester can easily read the
correct pin configuration of10/100 Base-T cable. 10Base-2
cable(coax), RJ45/RJ11 modular cables, AT&T258A, 356A,
TIA-568B and Token Ring cable by comparing one
transmitting end to the corresponding receiving end. With the
remote kit it can test cables installed far away either on wall
plate or patch panel. It is easy to verity the cable continuity,
open, short and cross-connect.
Note: Make sure the battery power is sufficient. Insufficient battery
power will lead to dimmed LEDs and incorrect results.
10/100 Base-T Test
1. Plug one end of the tested cable into the transmitting

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RJ45 jack on the master unit marked with a ' 回' and
the other end of the cable into the remaining receiving
RJ45 jack.
2. Slide power switch on. The upper row of LEDs will start
to scan in sequence if the Auto/Manual button is set on
"Auto" mode. The LED for pin 1 will light up if the button
is in "Manual" mode.
3. Switch back and forth from Auto or Manual scanning
mode by pressing the Auto/Manual button on the side of
the master-testing unit.
4. Once both ends of the cable are plugged in properly, the
second row of LEDs will illuminate according to the
corresponding LEDs in the top row.
5. Read the results of the LED display for the pin
configuration status of the tested cable. If you fail to
read the results the first time in Auto mode, you may
wait for the second LED scan, or simply switch to
Manual mode for pin by pin testing. In Manual mode,
pressing the square "Test" button will advance testing to
the next pin.
RJ11 Modular Cable Test
Please follow directions for the UTP/STP Cable Test and
use the operations manual for the correct LED pin out
display
Coaxial Cable Test
1. Plug the two attached BNC adapter cables on both
RJ45 jacks. Then connect the tested cable to each end
of the BNC adapter cables
2. For the remaining testing procedures, please refer to
10Base-T Test steps 2 to 5.
Note:
1. The center pin of BNC should be read on LED 2.

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2. As Coaxial cable has only two wires, we suggest you read the
result of the LED scan using Manual mode.
Remote Test
1. Plug one end of the tested cable to the transmitting
RJ45 jack on the master unit marked with a ' ' and plug
the other end into the remote terminator. If the tested
cable is installed in a patch panel or wall plate, you may
use the included patch cable to solve the connector
gender problem.
2. Now, set the Auto/Manual switch to Auto mode for
one-person testing.
3. Read the test results from the LED display on remote
terminator.
Note: The LED display on the remote unit will scan in sequence
corresponding to the transmitting end of the master unit.
Sample Test Results
1 2 3 4 5 6 7 8 G
1. Continuity: Pin 2 has continuity
1 2 3 4 5 6 7 8 G
2. Open: Pin 2 is opened
1 2 3 4 5 6 7 8 G
3. Short: Pin 2 and Pin 3 are shorted
1 2 3 4 5 6 7 8 G
4. Miswire: Pin 3 and Pin 6 are miswired
Caution:
1. Operating the tester in live circuits may damage the
tester
2. Leaving the battery in the tester for long periods of time
without use could drain power from the battery

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