Cable Locator
Transmitter/Receiver
Model 6681
User Manual
ENGLISH
www.aemc.com
®
CHAUVIN ARNOUX GROUP
Statement of Compliance
Chauvin Arnoux®, Inc. d.b.a. AEMC® Instruments
certifies that this instrument has been calibrated using
standards and instruments traceable to international
standards.
We gu
arantee that at the time of shipping your
instrument has met its published specifications.
The recommended calibration interval for this
instrument is 12 months and begins on the date of
receipt by the customer. For recalibration, please
use our calibration services. Refer to our repair and
calibration section at www.aemc.com.
Serial #:
Catalog #: 2127.85
Model #: 6681
Please fill in the appropriate date as indicated:
Date Received:
Date Calibration Due:
®
hauvin Arnoux
C
d.b.a AEMC
, Inc.
®
Instruments
www.aemc.com
ORDERING INFORMATION
(1) Cable Locator Transmitter and
(1) Soft Carrying Case
(1) Adapter - 110V
Ordering Information:
Cable Locator Transmitter and Receiver ............................................................... Cat. #2127.85
Shipping Contents:
(1) Cable Locator Receiver
Set of 2, Color-coded (Red/Black)
Leads & Alligator Clips (Rated
1000V CAT IV)
Also includes (6) AAA batteries, (1) 9V battery and user manual.
(1) Mini Ground Rod
outlet w/banana plugs
Replacement Parts
Lead - Set of 2, 5 ft Color-coded (Red/Bl ack) Leads,
& Alligator Clips (Rated 1000V CAT IV) ................................................................... Cat. #2140.62
Mini Ground Rod ....................................................................................................... Cat. #5000.79
Case – Replacement Soft Carrying Case................................................................. Cat. #5000.81
Adapter – 110V Outlet w/4mm Banana Plugs............................................................. Cat. #2118.49
For accessories and replacement parts, visit our store at www.aemc.com.
Model 6681 Cable Locator 3
Thank you for purchasing the Model 6681 Cable Locater Transmitter and Receiver.
This instrument and its accessories comply with safety standards IEC
61010 for voltages of 300V in category III at an altitude of less than 6562
(2000m), indoors, with a degree of pollution of not more than 2. Failure to
observe
and destruction of the instrument and of the installations.
If you use this instrument other than as specified, the protection it provides
to you may be compromised.
For best results read this user manual carefully and follow all precautions for its use.
SYMBOLS
Danger. Refer to this data sheet whenever this danger symbol appears.
Indicates conformity with European directives, in particular LVD and
EMC.
Indicates that, in the European Union, the product must undergo
selective disposal in compliance with Directive WEEE 2002/96/EC. This
equipment must not be treated as hous ehold waste.
Battery.
DC and AC.
PRECAUTIONS FOR USE
’
the safety instructions may result in electric shock, fire, explosion,
• Do not use the instrument if it appears damaged, incomplete, or poorly closed.
• Do not use the instrument on networks on which the voltage or category
exceeds those specified in this manual.
• Comply with all conditions of use, including temperature, relative humidity,
altitude, degree of pollution, and place of use.
• Before each use, check the condition of the insulation on the leads, housing,
and accessories. Any item on which the insulation is deteriorated (even
partially) must be set aside for repair or scrapping.
4 Model 6681 Cable Locator
• Only use leads and accessories supplied. Using leads or accessories of a lower
Connecting the transmitter to an installation at line voltage may
milliamps
In normal use,
neutral
ground
may
When
ensure installation
depending on the country), in particular
the ground conductor (PE) to earth.
voltage or category reduces the voltage or category of the combined instrument
+ leads (or accessories) to that of the leads/accessories.
• All troubleshooting and metrological verifications must be done by certified
personnel. Any change may compromise safety.
• Wear suitable personal protective equipment when hazardous voltages may be
accessible in the installation where the measurement is made.
• Store the instrument a clean, dry, cool place. Remove the batteries before any
prolonged period of non-use.
create a
-level current in the circuit.
the transmitter must be connected only between phase and
. If the transmitter is accidentally connected between phase and
, and there is a fault in the installation, all parts connected to ground
become live.
used on a live installation, the instrument mu st first be checked to
complies with standards (NF-C-15-100, VDE-100, etc.,
earth resistance and connection of
MEASUREMENT CATEGORIES
CAT IV: corresponds to measurements taken at the source of low-voltage
installations.
Example: power feeders, counters and protection devices.
CAT III: corresponds to measurements on building installations.
Example: distribution panel, circuit-breakers, machines or fixed industrial devices.
CAT II: corresponds to measurements taken on circuits directly connected to lowvoltage installations.
Example: power supply to electro-domestic devices and portable tools.
Model 6681 Cable Locator 5
TABLE OF CONTENTS
1. INTRODUCTION ............................................................................................................... 7
2. DESCRIPTION .................................................................................................................. 8
1 TRANSMITTER ........................................................................................................... 8
2.
2.1.1 INTERFACE ........................................................................................................ 8
2.1.2 LCD SCREEN ..................................................................................................... 9
2.2 RECEIVER .................................................................................................................. 9
2.2.1 INTERFACE ........................................................................................................ 9
2.2.2 LCD SCREEN ................................................................................................... 10
2.2.3 CABLE DETECTION MODE EXAMPLES ......................................................... 10
3.OPERATION ................................................................................................................... 11
1 GETTING STARTED ................................................................................................. 11
3.
3.1.1 SETTING UP ..................................................................................................... 11
3.1.2 USE .................................................................................................................. 11
3.1.3 NEXT STEP: 2 TRANSMITTER CONNECTION MODES ................................. 12
3.2 SINGLE-POLE OPERATION ..................................................................................... 13
3.2.1 LOCATING AND TRACING LINES AND OUTLETS .......................................... 13
3.2.2 LINE BREAKS LOCATION ................................................................................. 14
3.2.3 LINE BREAKS LOCATION USING TWO TRANSMITTERS ............................... 16
3.2.4 FLOOR RADIENT HEATING SYSTEM FAULT DETECTION ............................. 17
3.2.6 METALLIC WATER SUPPLY AND HEATING RADIATORS DETECTION ......... 19
3.2.7 IDENTIFICATION OF A BRANCH CIRCUIT ON THE SAME FLOOR ................ 20
3.2.8 UNDERGROUND CIRCUIT TRACING ............................................................. 21
3.3 TWO-POLE OPERATION ......................................................................................... 22
3.3.1 CLOSED-CIRCUIT APPLICATIONS ................................................................. 22
3.
3.2 CIRCUIT BREAKERS/FUSES DETECTION ..................................................... 23
3.3.3 SHORT-CIRCUIT DETECTION......................................................................... 24
3.3.4 DEEP UNDERGROUND CABLES DETECTION ............................................... 25
3.3.5 SORTING OR IDENTIFICATION OF CONDUCTOR PAIRS .............................. 26
3.4 INCREASING THE EFFECTIVE RADIUS OF DETECTION
3.5 LINE VOLTAGE IDENTIFICATION/SEARCHING FOR
4. ADDITIONAL FUNCTIONS ............................................................................................. 29
1 TRANSMITTER VOLTMETER FUNCTION ................................................................ 29
4.
4.2 FLASHLIGHT FUNCTION .......................................................................................... 29
4.3 BACK-LIGHT FUNCTION .......................................................................................... 29
4.4 BUZZER ACTIVATION/DE-ACTIVATION .................................................................. 29
4.4.1 TRANSMITTER................................................................................................. 29
4.4.2 RECEIVER........................................................................................................ 29
4.5 AUTOMATIC POWER-OFF FUNCTION .................................................................... 29
4.5.1 TRANSMITTER................................................................................................. 29
4.5.2 RECEIVER........................................................................................................ 29
5. SPECIFICATIONS .......................................................................................................... 30
5.1 TRANSMITTER SPECIFICATIONS ........................................................................... 30
5.2 RECEIVER SPECIFICATIONS .................................................................................. 30
5.3 COMPLIANCE WITH INTERNATIONAL STANDARDS .............................................. 31
6.MAINTENANCE .............................................................................................................. 32
1 CLEANING ................................................................................................................ 32
6.
6.2 BATTERY REPLACEMENT ...................................................................................... 32
6.3 TRANSMITTER FUSE CHECK ................................................................................. 32
OF LIVE CIRCUITS ....... 27
BREAKS IN THE CIRCUIT .. 28
6 Model 6681 Cable Locator
1. INTRODUCTION
The Cable Locator Model 6681 detects telecommunications cables, data cables,
electric power supply cables, and metal pipes in installations of category III (or lower),
at voltages of 300V (or less) with respect to ground.
The instrument is a portable device comprising a transmitter, receiver, and
accessories. The transmitter and receiver each have a large back-lit LCD and large
keys.
The transmitter applies an AC voltage modulated by digital signals to the circuit that is
to be located, which creates a proportional alternating electric field. The transmitter is
also an AC/DC voltmeter; the display of the measured voltage is accompanied by a
symbol warning of the presence of a voltage. The transmitter also has a self-test
function, indicating good transmission between transmitter and receiver.
The receiver has a sensitive sensor that generates a display proportional to the
electric field detected. The variations of this signal, after decoding, processing, and
shaping, enable the user to determine the location of underground cables and pipes,
and the detection of any faults in them. The receiver also has a buzzer that changes
pitch as a function of the strength of the signal detected.
Fig. 1
Model 6681 Cable Locator 7
2.1 TRANSMITTER
Fig. 2
2.1.1 INTERFACE
2. DESCRIPTION
1. LCD screen.
2. POWER: Turns instrument ON/OFF.
3. LEVEL SEL: Adjusts/confirms
transmit power level (Level I, II or III).
4. START/STOP: Starts/stops
transmission.
5. CODE SEL: Adjusts/confirms code
information to be set. Press key for 1
second to activate code selection mode.
Press briefly to exit from this mode.
Codes F, E, H, D, L, C, Y, and A can be
selected; F is the default.
6. : Decreases transmitt e d p ower level or
changes the transmission code.
7. : Increases transmitted power level or
changes the transmission code.
8. : Silent mode activation/de-activation.
In silent mode, key presses and the
buzzer are silent.
9. : Flashlight ON/OFF.
10. "+" input/output terminal for voltage
measurement and injection signal to
system under test.
11. "COM" input/output terminal/Grounding
terminal.
Note that if one of the POWER, CODE SEL, or LEVEL SEL keys is active, the other
two are inactive.
8 Model 6681 Cable Locator
2.1.2 LCD SCREEN
11. Silent mode symbol.
Fig. 4
1. Transmitter battery indicastor.
2. Transmitted power level (Level I, II,
or III).
3. Transmission code (F is default).
4. AC voltage.
5. DC voltage.
6. Measured voltage. The instrument can
be used as a voltmeter with a range 12
to 300V AC/DC.
7. Transmission status.
8. Code transmitted.
Fig. 3
9. Transmitted signal strength.
10. Voltage present symbol.
2.2 RECEIVER
2.2.1 INTERFACE
1. Flashlight indication.
2. Sensor head.
3. LCD screen.
4. : Turns instrument ON/OFF.
5. : Backlighting and silent mode
ON/OFF. Press briefly to activate/deactivate backlighting. Press for 1 second to
activate/de-activate sile nt mod e. In silent
mode, key presses and the buzzer are
silent.
6. : Flashlight ON/OFF.
7. UAC: Cable detection mode or Line
voltage detection mode.
8. MANUAL: Manual or automatic cable
detection mode.
9. : Decrease received sensitivity in manual
mode.
10. : Increase received sensitivity in manual
mode.
11. Buzzer.
Model 6681 Cable Locator 9
2.2.2 LCD SCREEN
3. Mains voltage identification mode
Fig. 8
1. Receiver battery indicator.
2. Transmitter battery indicator.
3. Received signal level (Level I, II, or III).
4. Manual mode indicator.
5. Automatic mode indicator.
6. Signal str engt h indi cator in automatic
mode. In manual mode, displays either
"SEL" (to indicate that there is no signal) or
a value indicating signal strength. In AC
mode, "UAC" is displayed.
7. Concentric circles indicating the preset
sensitivity in graphic form. A large number
Fig. 5
of circles indicates high sensitivity. A
small number indicates lower sensitivity.
8. Code received.
9. Received signal strength.
10. Voltage present indicator.
11. Silent mode indicator.
2.2.3 CABLE DETECTION MODE EXAMPLES
1. Automatic mode
Fig. 6
2. Manual mode
Fig. 7
10 Model 6681 Cable Locator
3. OPERATION
1. Obtain a length of sheathed 3-conductor
leads (provided).
3.1 GETTING STARTED
The best way to learn to use the Model 6681 cable locater is to follow the exam p l e
below:
3.1.1 SETTING UP
cable with a cross section of at least
0.0625”.
2. Temporarily staple a 15’ length of this cable
along a wall, on an attachment surface at
eye level. The wall must be accessible from
both sides.
3. Create an artificial break in one of the
conductors at approximate ly 5’ from one
end.
Fig. 9
5. Connect the COM terminal of the transmitter to ground. All other conductors of
the cable must also be connected to the transmitter and to the same ground
(see Fig. 9).
At the far end of the cable, the conductors must be "open" (not connected to each
other).
3.1.2 USE
1. Switch the transmitter ON using the ON/OFF key. The transmitter displays the
initial screen and the buzzer beeps twice.
2. Press LEVEL SEL on the transmitter to enter transmit level adjustment, then
use the up and down arrow k e y s t o select the transmit level (I, II, or III). After
setting this level, press LEVEL SEL again to exit.
3. To change the code transmitted, press the CODE SEL key on the transmitter for
approxim at e ly 1 s e c ond, then press the up arrow key or the down arrow key t o
select the code transmitted (F, E, H, D, L, C, Y, or A; F is default). Press the
CODE SEL key again to exit.
4. Press START/STOP to start transmission. The concentric circles displayed on
the LCD screen will spread gradually, the code of the transmitted signal appears
on the lower right side of the display, and the strength is graphically displayed
(see Fig 5).
Model 6681 Cable Locator 11
4. Connect the end of the broken cable to the
(+) terminal on the transmitter using the test
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