Pro's Kit MT-7071 User manual

LCD Cable Length Toner & Probe Kit
MT-7071 /MT-7071K
User’s Manual
1st Edition,
© 2017 Copyright by Prokit’s Industries Co., Ltd.

1
Thank your for purchase Pro’sKit MT-7071 LCD Cable Length Toner & Probe Kit.
The Toner and Probe set is used to measure cable length and quickly trace and
identify cables or wires within a group and also check the operation of telephone
lines. With proper use and care, this instrument will provide many years of
reliable service.
INDEX
Overview…………………………………………..…….…………………..…...
2
Features…………………………….…………….……..…….………..……......
2
Advanced Features………………………………..…….……….………………
3
Packing……………………………………………..…….…….….………….…..
4
Specifications………………………………………..………………..……...….
4
Safety Information…………………………………..…….………….…...……..
6
MT-7071 Transmitter/Remote unit………………..…….…………….……..…
7
MT-7071 Receiver………………………………………..…….………………..
9
First using guide……………………………………….……..…….…….….…..
11
Cable Map Testing…………………………………………………..…….……..
11
Standard model (standard remote unit) for cable mapping. …..…….…….
12
Optional 1 to 8 remote units for cable mapping…………..…….………..…
14
Cable Length Measurement…………………………………..…….…….…….
16
Length Calibration……………………………………….. …..…….……...….
17
How to load Calibration parameters ……………………..…….……………
18
Length Measurement……………………………………..…….……………..
18
Locating and Isolating Cables………………………………..…….…………...
20
Locating Individual Wire Pairs with the MT-7071 Analog Function……….
21
Isolating Cables……………………………………..…….…………………...
22
Live telecommunication equipment and router test…………..…….…..…….
23
Shielded Lan Cable & Continuity Testing…………………..…….…….….…..
24
NCV (Non-Contact Voltage) Testing………………………..…….…….….…..
25
Battery Life and Replacement………………………………..…….….…….….
26
Maintenance & Trouble shooting…………………………..…….…….….……
27
Operating Process…………………………………………..…….……………..
28

2
OVERVIEW
MT-7071 display is 128x64 dots graphic LCD, 50x27.5mm dimension, with LED
backlight allows work even in dark places. Users can select display language in
Chinese or English. It employs a cable capacitance method to measure cable
length up to 1200M (4000ft) by locating the open point, accuracy is ±3.0% after
length calibrating. User can select unit of length in meters, feet or yards.
MT-7071 can save 7 calibration parameters and recall the data to apply it at
anytime. It lets you easily locate and verify the cable with the receiver, indicates
by low or high signal on LCD or volume of sound to find the cable quickly.
MT-7071 also provides the wiring troubleshooting for continuity, shorts, opens
and crossover on RJ45 LAN cable Cat 5、5e、6 (UTP/STP)、RJ11/12 Telephone
cable Cat. 3 (2/4/6 pin) and Coaxial cable & normal solid/stranded wire by
alligator clips patch cord together with the remote unit. MT-7071 comes with
complete accessories to satisfy different application requirements, including
RJ45 patch cord、RJ11/12 patch cord、BNC patch cord and Alligator clips patch
cord. Ideal for all installation and maintenance fields of telecommunication,
networking, data communication, Audio/Video, cable TV, etc.
FEATURES
Cable Length Measurement up to 1200M
•Measuring cable length to opens up to 1200M, Calibration accuracy: ±3.0%.
•Length measurement in feet, yards or meters.
•Cable length measurement without remote attached.
Calibration Parameters
•Can determine actual calibration parameters with known length of cable for
cable length test.
•Allows setting 1-7 calibration parameters.
Wire Tracing up to 3KM
•The tone and probe kit lets you easily track wire directly in connection with
live telecommunication equipment and router.
Cable Mapping & Status Indication
•Display the result of pin to pin cable mapping.
•Display cable status and troubleshoot wiring for continuity, short, open and
crossover.
Max. Support 8 remote units
•For cable mapping on RJ45 Lan cable Cat 5、5e、6 (UTP)、RJ11/12
Telephone cable Cat. 3 (2/4/6 pin) & BNC connector coaxial cable.
Non Contact Voltage Detection
•Tests AC voltage from 90 ~ 1000V, special design to make sure the power is
off before testing for circuit protection.
Energy saving
•Selectable option automatically powers off after 15/30/60/120 min. of no
operation.

3
ADVANCED FEATURES
•MT-7071 Transmitter: comes with 128×64 dots graphic LCD, 50×27.5mm
dimension with LED backlight allows work even in dark places. User can
select display language in Chinese or English.
•MT-7071 Transmitter：measures the cable length or locates the break point
of RJ45 Lan cable、RJ11/12 phone cable、Coaxial cable up to 1200M
(4000ft). The minimum testing length is 2meter (6.8 feet/2.2 yard). User can
select unit of length in meters, feet or yards, accuracy is ±3.0% after length
calibrating. It can save 7 calibration parameters and recall the data to apply it
at anytime.
•MT-7071 Transmitter: Generates 580/1160 Hz audio signal with two tones.
The maximum distance of Transmitter is ≧3 kilometers. Work with MT-7071
Receiver by volume adjustment feature can precisely find the break point in
the range of 10~30cm. The MT-7071 Receiver with the indicated LEDs is
more accurate for testing.
•MT-7071 Transmitter with the Remote unit: for cable mapping by LCD
indication. The instrument can verify cable status for continuity, shorts,
opens and crossover on RJ45 Lan cable and RJ11/12 telephone cable and
test shielding/ unshielded wire. The maximum length that can be tested is
610 meters (2,000 feet/666 yards).
•MT-7071 Transmitter with multi remote units：It supports testing with multi
remote units up to 8 (optional MT-7071U: ID#1~#8) for cable mapping and
verifying continuity, shorts, opens and crossover of RJ45Lan cable or
RJ11/12 phone cable, Coaxial cable. The maximum length could be tested is
610 meters (2,000 feet/666 yards). LCD can display each ID number to
quickly locate and trace the cable that you want to test.
•MT-7071 Transmitter ：With alligator clips patch cord for verifying the open
and short status for single conductor or twin conductor cable and testing the
shielded or unshielded wire.
•MT-7071 Transmitter ：Circuit Protection design for low current < 5mA, 48V
DC, allows to test telecommunication equipments and routers in live network,
you don’t need to turn off power.
•MT-7071 Transmitter ：User can select 15, 30, 60 or 120 minutes setting
the auto power off time and select the low battery indication function.
•MT-7071 Receiver：With Non Contact Voltage detection function which can
detect AC voltage from 90~1000V to avoid danger and damage by detecting
the voltage in advance.
•MT-7071 Receiver：With LED lighting and earphone jack allowing to test in
noisy or dark environments.

4
PACKAGING
The MT-7071 comes with the accessories listed below. If any accessory is
damaged or missing, contact the place of purchase immediately.
MT-7071 LCD Cable Length Tone and Probe Kit
•MT-7071 Transmitter.
•MT-7071 Receiver.
•MT-7071 Remote unit, max. support 8pcs (optional MT-7071U)
•RJ45 (8 pin) to RJ45 (8 pin) patch cords.
•RJ11 (6 pin) to RJ11 (6 pin) patch cords.
•RJ11 (6 pin) to alligator clips patch cord.
•Earbud.
•Storage bag & User’s manual.
SPECIFICATIONS
MT-7071 Transmitter specifications
Display
LCD 128×64 Dots (50×27.5mm), with white backlight
Compatible connectors
RJ45(8 pin)、RJ11/12(6 pin)、BNC connectors
Cable types tested
RJ45 Lan cable Cat 5、5e、6 (UTP/STP)、RJ11/12
Telephone cable Cat 3 (2/4/6 pin)、Coaxial cable & normal
solid/stranded wire by alligator clips patch cord
Cable test modes
580/1160 Hz two-note tones for location and isolating
cables, wire mapping for validate (detects wire continuity,
shorts, opens, miswire (crossover) and open length
tested.
Measurement technology
Cable capacitance method
Max. distance of open length
＞1,200 meter (4,000 feet/1,300 yard), approx
Min. distance of open length
2 meter (6.8 feet/ 2.2 yard)
Typical accuracy of open
length
2~10 meter (6.8~33 feet/2.2~11yard) for reference
10~610 meter (33-2000 feet/ 11-666 yard.): ±5.0%
610~1,200 meter (2000~4000feet/ 666~1300 yard.) for
reference
Calibration accuracy of open
length
10~610 meter (33~2,000 feet/11~666 yard),
RJ45 Lan cable Cat 5、5e ±3.0%,
RJ45 Lan cable Cat6、RJ11/12 Telephone cable Cat 3
(2/4/6 pin)、Coaxial cable ±5.0%,
standard cable:10~50meter(33~164 feet/11~55 yard)
Resolution of open length
0.1 meter/ feet/ yard
Measurement rate
1~3 sec./time
Unit of open length
meters/ feet/ yards, selectable option
Calibrating parameters
memory
1~7 sets, allowing rewrite by new calibrating parameters
Tone frequency
580/1160 Hz
Max. distance of
transmission
≧3 km

5
Max. distance of cable map
610 meter (2,000 feet/666 yard)
Min. distance of cable map
Twisted Pair：1Meter (3 feets/ 1yard), normal
wire:1.25Meter (4feets/1.35yard)
Max. working current
≦65 mA
Max. signal voltage
8 Vp-p (Tone mode)、DC 3.3V/5mA(Cable mapping mode)
Tone mode
two-note tone
Function selection
5 Push button switch (POWER、ENTER、RETURN、UP、
DOWN)
Language select
Chinese/ English
Continuity test
Yes (With alligator clips patch cord, display #3 & #4 short
or open)
Cable map indication
LCD #1~#8
Shielded indication
LCD #G
Live telecommunication
equipment test and router
test
Yes
Voltage protection
Protection for low current＜5 mA.
RJ45(8 pin)：48V DC
RJ11(3.4 pin) & BNC(2 pin)：48V DC
Auto power off
15/30/60/120 min., selectable option
Low battery display
DC7.0±0.5V (LCD flashes)
Battery type
DC 9.0V (NEDA 1604/ 6F22 DC9V ×1pcs) Not included
Dimension (L×W×D)
138×80×35 mm
MT-7071 Receiver specifications
Frequency
580/1160 Hz
The Max. working current
≦80 mA
Compatible connectors
RJ45(8 pin), only for RJ45 cable mapping
Function selection
4 Position mode switch (LED、NCV、OFF、SCAN)
Earbud
1
Signal status indication
1 LED & Buzzer
NCV indication
1 LED (AC 90~1000V)
LED illumination
1 LED
Power indication
1 LED
Battery type
DC 9.0V (NEDA 1604/ 6F22 DC9V ×1pcs) Not included
Dimension (L×W×D)
203×50×32 mm
MT-7071 Remote unit specifications
Remote unit
1 pcs, max. support to 8 pcs (optional MT-7071U)
Compatible connectors
RJ45(8 pin)、RJ11/12(6 pin)、BNC connectors
Dimension (L×W×D)
90×32×30mm

6
Transmitter drop test (Shock and Vibration)：1 Meter
Operating temperature：0 ~ 50℃(32 ~ 122℉)
Storage temperature：-10 ~ 60℃(14 ~ 140℉)
Operating humidity：20% - 75% RH
Storage humidity：10% - 90% RH
Operating altitude：3,000 meters
Storage altitude：10,000 meters
SAFETY INFORMATION
Table 1 describes the international electrical symbols used on the tester and in
this manual.
Table 1.International Electrical Symbols
Warning：Risk of personal injury. See explanations in the
manual.
Caution：Risk of damage or destruction to equipment or
software. See explanations in the manual.
Warning：Risk of electric shock.
Please keep an eye on the status or function of the equipment
while operating.
This equipment not for connection to public communications
networks, such as active telephone systems.
Warning
•Do not test with live wire having over 5mA, 48V DC for RJ-45 Lan cable
test; Do not test with live wire having over 5mA, 48V DC for RJ11 (6 pin)
telephone cable test or BNC (2pin) cable test; Do not connect with mains
electricity to any jack of MT-7071, all of mains electricity is over 5mA.
•Never use the Transmitter, Receiver, or test leads if they are damaged.
Inspect the cases and test leads for damage before use.
•Disconnect unused test leads and connectors from the Transmitter
when testing telephone circuits.
•Never open the case except to change the battery; no user-serviceable

7
parts are inside.
•Turn off the Transmitter or Receiver and disconnect all test leads before
replacing the battery.
•Use only a 9V battery, properly installed in the case, to operate the
Transmitter and Receiver.
•If this equipment is used in a manner not specified by the manufacturer,
the protection provided by the equipment may be impaired.
INSTRUCTION
MT-7071 Transmitter/Remote Unit：
1. RJ45 (8 pin) connectors: Used for cable mapping and verifying cable
status of RJ45 (8 pin) LAN cable with remote unit; with tone generator
for wire tracing; for measuring cable length to open without remote unit.
Caution! Do not plug in live wire that over 5mA, 48V DC to RJ45 (8
pin) jack.
2. RJ11(6 pin) Connectors：Used for cable mapping and verifying cable
status of RJ11 (6P/6C/4C/2C) phone cable with remote unit; with tone
generator for wire tracing; for measuring cable length to open without
remote unit. Use alligator clip patch cord for cable mapping, cable length
measuring and verifying cable status of single conductor cable or two
conductor cable.
Caution! Do not plug in live wire having over 5mA, 48V DC to RJ11
(6 pin) jack.
3. BNC Connectors：Used for cable mapping and verifying cable status of
BNC Coax cable with remote unite; with tone generator for wire tracing;
for measuring cable length to open without remote unit. Use adaptor for
testing RF cable (such as F、RCA、TNC、M connectors).
Caution! Do not plug in live wire having over 5mA, 48V DC to BNC
(2pin) connector.
4. LCD Display：For indicating function and display test result.

8
5. Battery low indicator: When the battery is lower than DC 7.0V, LCD
will show flash 「 」icon. Please replace battery.
6. 「 」Function enter push button：Press this button to enter the
function.
7. 「 」Function up push button：Press this button to move up arrow
cursor on LCD to choose function or increase 0.1 meters / feet / yards of
calibration parameters.
8. 「 」Power ON/OFF push button：Press this button to power on,
push again for power off.
9. 「 」Function return push button：Press this button to return to
previous menu.
10. 「 」Function down push button：Press this button to move down
arrow cursor on LCD to choose function or reduce 0.1 meters / feet /
yards of calibration parameters.
11. Battery cover.
1 2
11
ENTER RETURN
DOWNUP
MT-7071
LCD CABLE LENGTH
TONER & PROBE
TRANSMITTER
4
3
3
2
6
7
5
9
8
10
1
Figure 1 MT-7071 Transmitter / Remote Unit
MT-7071 Receiver：

9
1. Probe：Used for wire tracing and NCV detection.
2. LED illumination：Used for dark working environment.
3. Power ON/OFF indicator：The indicator will be lit up when the switch is
at " "or "NCV" or "SCAN" position and the receiver has started its
functions.
4. NCV indicator：When the probe is close to the tested object to detect
the voltage, the indicator will light up if the object carried AC90~1000V. If
the indicator did not light up, there is no voltage detected from the object
or the AC voltage is less than 90V.
5. Signal status indicator：When doing cable mapping by probe, if the
indication LEDs (1~8) more light up, the signal is stronger.
6. Volume control：By adjusting the volume from high to low to adjust the
sensitivity of probe, move the position of receiver from 30 to 10cm to find
out which cable you are tracing.
7. Earphone jack Φ3.5mm：Earphone can be used when the working area
is noisy.
8. Function selection：4 Position mode switch (LED、NCV、OFF、SCAN)
9. Speaker：When “SCAN” feature is working, if the speaker is louder, the
signal is stronger.
10. 「 」Locating and Isolating cables function push button：When
pushing the “ ” button, the feature starts and the signal status
indicator light will be on.
11. RJ45(8 pin) connectors：Used Only for RJ45 (8 pin) Lan cable
mapping. When used for RJ45 (8 pin) LAN cable mapping and wire
troubleshooting, please connect the cable terminal to RJ45 (8 pin) jack
of MT-7071 Transmitter, then start the function. (only for 1 to 1 test )
Caution! Do not plug in any live wire to the RJ45 (8 pin) jack.
12. Battery cover.

10
Figure 2 MT-7071 Receiver Diagram

11
OPERATION
FIRST USE GUIDE
If this is you first operation, please follow the instructions carefully as below
before testing.
1. Please read user manual carefully and refer to page30:「Operating
process chart」for learning operation instruction.
2. Please refer to page30: 「Operating process chart A. (Lang：)」and
follow the procedures to select language: (Chinese/English).
3. Please refer to page30:「Operating process chart I.(Auto off time)」，
follow the procedures to select 15/30/60/120 min for auto power off time
setting.
4. Please refer to page30:「Operating process chart F.(Unit：)」，follow the
procedures to select unit：Meter / Feet /Yard.
5. If would like to change the setting, please follow the above instruction to
reset.
CABLE MAPPING
Caution!
•When performing cable mapping, select standard 1 to 1 or optional 1 to
8 remotes; both of receiver and remote unit cannot be used at the same
time, otherwise, the LCD will show incorrect test result. Single conductor
cable cannot be used for cable mapping.
•When performing cable mapping, do not connect the tested cable to any
electric circuit、equipment or adapter, it will affect the test result.
•Measuring cable length: the length of Lan cable must be longer than 1m
(3 Ft / 1 Yard), and the others must be longer than 1.25m (4 Ft / 1.35
Yard)。Maximum measuring distance is 610m (2,000Ft / 666 Yards).
•If short, open and crossover status occur at same time, “short”will show
up in first priority, please make the wire troubleshooting step by step.

12
Cable mapping with standard remote unit
Caution!
•When performing cable mapping with standard remote unit, it will
indicate shielded or unshielded, but will not indicate ID number of
remote unit. The remote unit does not have buzzer alarm.
•When performing cable mapping with standard remote unit for
RJ11/RJ12 cable, 6P/6C、6P/4C、6P/2C, the test result and continuity
status will be shown as figure 4-1.
1. Please connect tested cable to transmitter and remote unit properly as
figure 3.
2. Please refer to page30「Operating process chart B. Type：)」to select
the corrected cable type (such as coaxial cable, telephone cable…).
3. Start to performing cable mapping test as page30 「Operating process
chart C. Cable Mapping」.
4. The test result of 1 to 1 remote unit will display on LCD, please refer to
figure 4-2.
LCD CABLE LENGTH
T
ONER & P
ROBE
M
T
-7071
TRANSMITTER
ENTER
RETURN
DOWN
UP
Figure 3 Validating Cable Maps

13
Cable Map Remote
Telephone Cable (6P/6C) Telephone Cable (6P/4C) Telephone Cable (6P/2C)
Cable Map Remote Cable Map Remote
M:
1 2 3 4 5 6
1 2 3 4 5 6
R:
M:
X 2 3 4 5 X
X 2 3 4 5 X
R:
M:
X X 3 4 X X
X X 3 4 X X
R:
Good
Figure 4-1 Telephone Cable 6P/6C、6P/4C、6P/2C
Cable Mapping with standard remote unit
M:
1 2 3 4 5 6
1 2 3 4 5 6
R:
Telephone Cable (6P/6C)
1~6
Cable Map Remote M:
R:
BNC Coaxial Cable (2 pin)
1 G
Cable Map Remote
Good
1or G
Opens
M:
1 2 X 4 5 6
1 2 X 4 5 6
R:
Cable Map Remote
Short
M:
1 2 3 4 5 6
1 2 3 4 5 6
R:
Cable Map Remote
Short mapping
1 2 3 4 5 6 Short mapping 1 G
M:
1 2 3 4 X X
1 2 3 4 X X
R:
Cable Map Remote
M:
1 2 3 4 5 6
1 2 3 4 5 6
7
7
8
8
G
G
R:
M:
1 2 3 4 5 6
1 2 3 4 5 6
7
7
8
8
G
G
R:
Cable Map Remote
RJ45 Lan Cable (8+1 pin)
1~8 G Cat. 6 Lan Cable (8+1 pin) 1~8 G
Cable Map Remote
Good
M:
1 2 X 4 5 6
1 2 X 4 5 6
7
7
8
8
G
G
R:
M:
1 2 X 4 5 6
1 2 X 4 5 6
7
7
8
8
G
G
R:
Cable Map Remote Cable Map Remote
3 Opens
M:
1 2 3 4 5 6
1 2 3 4 5 6
7
7
8
8
G
G
R:
M:
1 2 3 4 5 6
1 2 3 4 5 6
7
7
8
8
G
G
R:
Cable Map Remote Cable Map Remote
3 4 Crossed
pairs
1 2 3 4 5 6 7 8 G
Short mapping Short mapping
3 4
Shorts
M:
1 2 3 4 X X
1 2 3 4 X X
7
7
8
8
G
G
R:
1 2 3 4 5 6 7 8 G
M:
1 2 3 4 X X
1 2 3 4 X X
7
7
8
8
G
G
R:
Cable Map Remote Cable Map Remote
3 4 Crossed
pairs &
5 6 Opens
Cable open or
too short
1 G
1 G
Figure 4-2 the test result instruction for cable mapping
with standard remote unit

14
Cable mapping with multi remotes (ID#1~#8)(MT-7071K)
Caution!
•When performing cable map with multi remotes (ID#1~#8), it will indicate
ID number of remote unit, but not show up shielded or unshielded wire.
The remote unit does not have buzzer alarm.
•When performing cable map with multi remotes (ID#1~#8), the test
result of connector pins are the pairs defined by this standard as below:
Lan cable: #1pin & #2pin、#3pin & #6pin、#4pin & #5pin、#7pin & #8pin
Phone cable #1pin & #6pin、#2pin & #5pin、#3pin & #4pin.
In the test result of verifying cable status and wire troubleshooting with
multi remotes (ID#1~#8), when Lan cable #1pin circuit is open, it will
show #1pin & #2pin open. When the telephone cable #1pin circuit is
open, the result will show #1pin & #6pin open. If users want to know
more pin to pin detail of cable status, we recommend you change to
perform cable mapping for 1 to 1 standard remote unit, please refer to
chapter “Cable mapping with standard remote unit”.
•When performing 1 to 8 remote unit (ID#1~#8) cable mapping, if LCD
displays two pairs #3pin & #6pin、#4pin & #5pin interaction flashing, it
means cross over between #3pin & #6pin、#4pin&#5pin (not comply with
EIA/TIA568A/B standard) or the patch cord is too short。
•Performing 1 to 8 remote unit (ID#1~#8) cable mapping for RJ11/RJ12
6P/6C,6P/4C,6P/2C telephone cable, the result instruction as shown as
figure 5-1.
1. Please connect tested cable to transmitter and remote unit properly as
shown in figure 3.
2. Please refer to page30「Operating process chart B. Type：)」to select
the corrected cable type (such as coaxial cable, telephone cable…).
3. Start to perform cable mapping test as page30 「Operating process
chart C. Cable Mapping」.
4. The test result of cable map with multi remote units will display on LCD,
please refer to figure 5-2.
5. When performing cable mapping with multi remotes (ID#1~#8) for Lan
cable, phone cable (6P6C), we use ID#6 as a example, if cable status is
“good connection”, the remote unit will sound five of beeps; If the cable
status is “open”, the remote unit will sound beeps continuity; if status is
“short” no more beep sounded. The test result instruction, please refer to
figure 5-2.

15
Caution!
•When performing 1 to 8 cable map (ID#1~#8 remote units), if any “short”
in Lan cable exists, #7pin or #8pin, telephone cable #1pin or #6pin,
telephone cable 6P/4C or 6P/2C or coax cable, it will not provide a
reminder.
Cable Map Remote 6
Telephone Cable (6P/6C) Telephone Cable (6P/4C) Telephone Cable (6P/2C)
Cable Map Remote 6 Cable Map Remote 6
M:
1 2 3 4 5 6
1 2 3 4 5 6
R:
M:
X 2 3 4 5 X
X 2 3 4 5 X
R:
M:
X X 3 4 X X
X X 3 4 X X
R:
Good
Figure 5-1 Telephone Cable 6P/6C、6P/4C、6P/2C
Cable Mapping with multi remote units
Cable Map with multi remote units ID#1~ID#8
M:
1 2 3 4 5 6
1 2 3 4 5 6
7
7
8
8
R:
M:
1 2 3 4 5 6
1 2 3 4 5 6
7
7
8
8
R:
Cable Map Remot 6
RJ45 Lan Cable (8 pin)
1~8 Cat. 6 Lan Cable (8 pin) 1~8
Cable Map Remot 6
Cable Map with multi remote units ID#1~ID#8
Good
M:
1 2 X 4 5 X
1 2 X 4 5 X
7
7
8
8
R:
M:
1 2 X 4 5 X
1 2 X 4 5 X
7
7
8
8
R:
Cable Map Remot 6 Cable Map Remot 6
3 Opens
M:
1 2 3 4 5 6
1 2 3 4 5 6
7
7
8
8
R:
M:
1 2 3 4 5 6
1 2 3 4 5 6
7
7
8
8
R:
Cable Map Remot 6 Cable Map Remot 6
3 4 Crossed
pairs
1 2 3 4 5 6 7 8
Short mapping Short mapping
3 4
Shorts
M:
1 2 X X X X
1 2 X X X X
7
7
8
8
R:
1 2 3 4 5 6 7 8
M:
1 2 X X X X
1 2 X X X X
7
7
8
8
R:
Cable Map Remot 6 Cable Map Remot 6
3 4 Crossed
pairs &
5 6 Opens
M:
1 2 3 4 5 6
1 2 3 4 5 6
R:
Telephone Cable (6P/6C)
1~6
Cable Map Remot 6 M:
R:
BNC Coaxial Cable (2 pin)
1 G
Cable Map Remot 6
Good
1 or G
Opens
M:
1 2 X X 5 6
1 2 X X 5 6
R:
Cable Map Remot 6
Short
M:
1 2 3 4 5 6
1 2 3 4 5 6
R:
Cable Map Remot 6
Short mapping
1 2 3 4 5 6 Short mapping 1 G
M:
X X 3 4 X X
X X 3 4 X X
R:
Cable Map Remot 6
Good
3 Opens
3 4 Crossed
pairs
3 4
Shorts
3 4 Crossed
pairs &
5 6 Opens
Cable open or
too short
1 G
1 G
Figure 5-2 the test result instruction for cable mapping
with multi remote unit (ID#1~#8)

16
MEASURE LENGTH, LENGTH CALIBRATION AND RECALL
PARAMETER
Caution!
•Please do not connect to any equipment or terminator, when measuring
cable length or performing length calibration, the cable should be in
open status. The measured cable should be 2 conductors at least, it is
not suit for single conductor wire. The cable length used for calibration
parameter should be 10m to 50m (33~164 Ft /11~55 Yard).
•When performing cable length measurement, the cable should be in
open status, it cannot apply for continuity、short or crossover testing
cable. The length of cable should be 2m (6.8 Ft / 2.2 Yard)。and the
Maximum measuring distance is 1200m (4,000Ft/3000Yard).
•When performing cable length measurement or length calibration, in
order to ensure the measuring accuracy, please operates under the
ambient temperature 23±5℃, RH 20%~75%. Otherwise, it may cause
big measurement error.
•Since there are many different cable specifications, brands and
manufacturers in the market, for ensuring correct measurement, please
set the cable calibration parameter as reference in advance. Before
measuring cable length, please reload the calibration parameter you set
and then measure the cable length. It will cause big measuring distance
difference if without calibration parameter. MT-7071 default measuring
cable type is UTP (Cat.5e) 、category 6 (Cat 6)、phone cable
(HYV4*1/0.4BC) and Coax cable(RG59).
•If user couldn’t judge what type the measuring cable is, please use a
high accuracy resistor meter to measure the wire resistance of same
length cable and judge the cable type according comparing the
resistance.
•When performing cable mapping, do not connect the tested cable to any
electric circuit、equipment or adapter, it will affect the test result.
•When performing cable length measurement function, LAN cable is
based on #3pin, telephone cable is based on #4pin, coax cable is based
on G pin. If the test results of measuring cable length to opens are
different, please refer to the length of based-pin. If the based-pin is open,
please change the wiring sequence; make sure the wire of based-pin is
good, then re-measures the cable length to opens.
•When performing cable length measurement function, if the test result is
shown “short”on the LCD, please remove the fault, then re-measures
the cable length to opens.

17
Length calibration
1. Prepare a 10m~50m ( 33~164Ft/ 11~55Yard) long standard cable to
measure.
2. Connect MT-7071 and standard cable as figure 6.
3. Select unit if you want to change, please refer to page30「Operating
process chart F.(Unit：)」.
4. Select correct cable type as instruction (page30) of 「Operating process
chart B.(Type：)」. Then start to measure length calibration function.
5. Performing length calibration, please refer to page30「Operating process
chart G.( Calibration)」,follow the steps and save the measuring result
as「Calibration 1, Calibration2… Calibration 7」after calibration.
ATTENTION：When calibration saved, you should bring up the
calibration parameters and check the length is same as the standard
cable, if different, please double check the wiring is properly connected,
then measuring cable length again, save the result as calibration.
L
CD CABLE LENGTH
TONER & P
R
OBE
M
T
-7071
TRANSMITTER
ENTER
RETURN
DOWN
UP
Figure 6 Cable Length Calibrations and Measurement

18
Calibration parameters Recall
Please refer to page30「Operating process chart H.( Load Data)」to select
「Calibration 1~ Calibration 7」then load the data for testing.
Measure Cable length
1. Make sure the measuring cable is in open circuit.
2. Measure length after recall calibration parameters, follow steps as
below.
Caution!
•Since there are many different cable specifications, brands and
manufacturers in the market, for ensuring correct measurement, please
set the cable calibration parameter as reference in advance. Before
measuring cable length, please recall the calibration parameter you set
and then measure cable length.
3. Connect MT-7071 and standard cable as figure 6.
4. Select unit if you want to change, please refer to page30「Operating
process chart F.(Unit：)」.
5. Select correct cable type as instruction of 「Operating process chart
B.(Type：)」.Then start to measure length calibration function.
6. Select「Calibration 1~ Calibration 7」, please refer to page30「Operating
process chart H.( Load Data)」,follow the step and apply data for
testing.
7. Measure length as page30 「Operating process chart D.( Cable
Length)」.
8. If all of measuring results are same distances between testing points to
open points, please refer the instruction as figure 7
Test results for when all conductors are same length to opens. For
example as below, all of measuring results are 168.5m.

19
RJ45LanCable(8pin)
8 pin same distances
to open 8 pin same distances to open 6 pin same distances to open
2 pin same distances
to open 2 pin same distances to open
1Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open Open Open
Open
Open
Open
Open
Open
Open
Open
Open Open Open
Open
Open
168.5m
168.5m
168.5m
168.5m
2
3
4
Cat.6LanCable(8pin)
1168.5m
168.5m
168.5m
168.5m
2
3
4
5168.5m
168.5m
168.5m
168.5m
6
7
8
5168.5m
168.5m
168.5m
168.5m
6
7
8
TelephoneCable(6pin)
1168.5m
168.5m
168.5m
168.5m
2
3
4
BNCCoaxialCable(2pin)
1168.5m
168.5m
2
Doubleconductorwire(2pin)
1168.5m
168.5m
2
5168.5m
168.5m
6
Figure 7 Test result for measuring Cable length to opens are the same