Major tech MT900 Bedienungsanleitung

INSTRUCTION MANUAL

CABLE LENGTH METER

MT900

MT900 is a precision cable length meter by using TDR (Time

Domain Reflectometer) technology to measure cable length.

The meter can be used for any cable consisting of at least two

insulated metallic elements, one of which may be the sheath or

shield of the cable. The meter has automatic internal matching

networks to allow testing with automatic selection range, which

correspond to power, telephone, CAT V and LAN, cables etc.

The meter can be closely matched to the cable under test using

the function selection keys. The velocity of propagation (V.O.P.)

value can be similarly adjusted to match the cable under test,

thus ensuring an accurate distance measurement.

INTRODUCTION

Features

ŸHigh accuracy and fast reflection

ŸEasy to use

Ÿ2.4 inch TFT color screen

ŸUser friendly menu on screen

ŸAuto-Zero and Auto Range, Auto adjust sensitivity, can

measure various cables

ŸBuilt-in 20 groups of standard cable V.O.P. value

ŸOptional auto power off time

ŸAuto-Sensitivity allows for closer matching to a wide range of

cables under test. Only V.O.P. Settings required

ŸMeasuring capability of the V.O.P. of a sample cable

Ÿ99 internal memory locations store up to 99 traces for future

analysis

Ÿ 2 x 1.5V AA LR6 battery

Ÿ Belt (S2C)

Ÿ User manual

Ÿ Transfer parts (X2)

Accessories

Instrument Parts Introduction

1. Coaxial cable connection (BNC socket)

2. Network cable connection (RJ-45 socket)

3. LCD display

4. MEAS/OK button

5. COAX/DATA switch button

6. SET button

7. button(move up/ increase button)

8. button(move down/ decrease button)

9. EXIT/POWER button

OPERATING INSTRUCTIONS

Power On: Press and hold the button

Power Off: Press and hold the button for 3 seconds

(The instrument will automatically turn off after 10min after

being inactive.)

After turning on the instrument, the default interface is data

cable length measurement. If you want to enter the functions

menu, press the button once. Press the button once again

to return to the measurement interface.

After enter functions menu, you can use the or button to

select any function you need. After you have chosen the function,

press the button to enter next display.

Inserting/Replacing Batteries

Power On and Off

1. Remove battery compartment lid.

2. Insert batteries according to the mark of battery box

3. Close the battery compartment again.

Function menus

ŸReplace the batteries when the battery symbol flashes red

in the display

ŸUse alkaline batteries only.

ŸRemove the batteries before any long period of non-use to

avoid the danger of corrosion.

Cable measurement

Ÿ Connect the cable to MT900 cable socket. (If the cable is a

network cable, connect the network cable to the MT900 RJ45

cable socket. If the cable is a coaxial cable, connect the

coaxial cable to the MT900 BNC socket.)

Ÿ Set the instrument to the cable measurement mode,

there are two ways to enter the cable measuring

interface:

The boot default interface is network cable measurement.

Press the button once to select network cable measurement,

coaxial cable measurement, or single-wire cable measurement.

1. Enter functions menu, press the or button to

select , then press the button once to enter El

the cable selection interface.

2. Then press the or button again to select the cable

measurement mode.

The second:

The first:

1. Select the V.O.P. of the network to be tested from the library.

Press the button once to enter the library. Press the or

button to select the corresponding network cable. Press the

button once to complete the V.O.P. settings.

2. Adjust the current V.O.P. slightly.

Press and hold the button until the V.O.P. value shows the

anti black state. Press the or button to increase or

decrease the V.O.P. value, Press the button once to

complete the V.O.P. settings.

Ÿ Select the V.O.P. of the network to be tested from the library,

or adjust the current V.O.P. slightly.

ŸPress the button once to complete a measurement. LCD

displays the length of cable to be measured.

ŸPress the button once to clear the measurement

Ÿ Press the button to enter the cable measurement

ŸAfter entering the function menu, press the or button to

select . Press the button once to enter V.O.P.

function selection interface.

Ÿ After entering the cable selection, press the or button to

select . Press the button once to enter the cable

database selection interface.

Ÿ After entering the cable database selection, press the or

button to select the appropriate database.

Ÿ Press the button once to enter the cable database.

ŸPress the or button to select the corresponding cable

name. Press the button once to enter the corresponding

cable measurement. Press the button once to enter the

current cable details.

Cable Library V.O.P.

ŸIn the current cable details interface, press the button to

return to the database. Press the button, this will show

indication whether to delete the current data information. To

delete, press the button. If you do not want to delete,

press the button once to return to the database.

Measurement and storage of V.O.P. values

1. Insert the known length cable (greater than 10 meters) into

the instrument.

2. After entering the function menu, press the or button to

select , press the button to enter the V.O.P.

function selection interface.

3. After entering the cable selection, press the or button to

select , press the button to enter the V.O.P. TEST

interface.

In the case that the V.O.P. is unknown of the cable measured, the

V.O.P. can be detected by the length of a known cable.

4. In the V.O.P. TEST interface, press the or button to

select , press the button once then the length

display becomes anti-black.

5. Press the or button to adjust the value and the actual

length to be the same, then press the button once to

measure the V.O.P. of the cable.

6. Name storage. Press the or button to select ,

press the button once to enter the name storage.

Ÿ Press the or button to select , press the

button once to enter the cable type selection. Press the or

button to select 51Ω, 75Ω or 100Ω. Press the button once

to complete the cable impedance storage.

Ÿ Press the button once to complete the measurement and

storage of V.O.P. value.

Cable impedance type selection

Press the or button to select , press the button

once to enter the manufacturers information storage. The mode

of operation is the same as name storage.

Manufacturer 's information storage

Press the or button to select , press the button

once to enter the cable type selection. Press the or button to

select data, coaxial, single-wire. Press the button once to

complete the cable type selection.

Cable type selection

Ÿ Select the character, starting with "A"

Press the button, characters change from 9 to 0

Press the button, characters change from A to Z.

Ÿ Press the button once to store the selected characters,

the maximum number of stored characters is 6.

Press the button once to clear the selected character

Press the button to move a character behind.

Ÿ Press the button to complete the name storage.

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