AEMC 6681 User manual

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 guarantee 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:
Chauvin Arnoux®, Inc.
d.b.a AEMC® Instruments
www.aemc.com

ORDERING INFORMATION
OrderingInformation:
Cable Locator Transmitter and Receiver............................................................... Cat. #2127.85
Shipping Contents:
(1) Cable Locator Transmitter and
(1) Cable Locator Receiver
(1) SoftCarrying Case
Set of 2, Color-coded (Red/Black)
Leads & Alligator Clips (Rated
1000V CATIV)
(1) Mini GroundRod
(1) Adapter - 110V
outlet w/banana plugs
Also includes (6) AAA batteries, (1) 9V battery and user manual.
Replacement Parts
Lead - Set of 2, 5 ft Color-coded (Red/Black) Leads,
&Alligator Clips (Rated 1000V CAT IV) ...................................................................Cat. #2140.62
Mini GroundRod.......................................................................................................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.
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 household waste.
Battery.
DC and AC.
PRECAUTIONS FOR USE
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
the safety instructions may result in electric shock, fire, explosion,
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.
•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
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.
Connecting the transmitter to an installation at line voltage may
create a
milliamps
-level current in the circuit.
In normal use,
the transmitter must be connected only between phase and
neutral
. If the transmitter is accidentally connected between phase and
ground
, and there is a fault in the installation, all parts connected to ground
may
become live.
When
used on a live installation, the instrument must first be checked to
ensure installation
complies with standards (NF-C-15-100, VDE-100, etc.,
depending on the country), in particular
earth resistance and connection of
the ground conductor (PE) to earth.
MEASUREMENT CATEGORIES
CAT II: corresponds to measurements taken on circuits directly connected to low-
voltage installations.
Example: power supply to electro-domestic devices and portable tools.
CAT III: corresponds to measurements on building installations.
Example: distribution panel, circuit-breakers, machines or fixed industrial devices.
CAT IV: corresponds to measurements taken at the source of low-voltage
installations.
Example: power feeders, counters and protection devices.
Model 6681 Cable Locator 5

TABLE OF CONTENTS
1. INTRODUCTION............................................................................................................... 7
2. DESCRIPTION.................................................................................................................. 8
2.1TRANSMITTER...........................................................................................................8
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
3.1GETTINGSTARTED ................................................................................................. 11
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
OF LIVE CIRCUITS....... 27
3.5 LINE VOLTAGE IDENTIFICATION/SEARCHING FOR
BREAKS IN THE CIRCUIT.. 28
4. ADDITIONAL FUNCTIONS ............................................................................................. 29
4.1TRANSMITTER VOLTMETERFUNCTION................................................................ 29
4.2 FLASHLIGHTFUNCTION.......................................................................................... 29
4.3 BACK-LIGHTFUNCTION.......................................................................................... 29
4.4 BUZZER ACTIVATION/DE-ACTIVATION.................................................................. 29
4.4.1 TRANSMITTER................................................................................................. 29
4.4.2 RECEIVER........................................................................................................ 29
4.5 AUTOMATICPOWER-OFFFUNCTION .................................................................... 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 COMPLIANCEWITHINTERNATIONALSTANDARDS.............................................. 31
6. MAINTENANCE.............................................................................................................. 32
6.1CLEANING................................................................................................................ 32
6.2 BATTERY REPLACEMENT...................................................................................... 32
6.3 TRANSMITTER FUSE CHECK................................................................................. 32
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.DESCRIPTION
2.1 TRANSMITTER
2.1.1 INTERFACE
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 transmitted power 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.
Fig. 2
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
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.
9. Transmitted signal strength.
10. Voltage present symbol.
11. Silent mode symbol.
Fig. 3
2.2 RECEIVER
2.2.1 INTERFACE
Fig. 4
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/de-
activate backlighting. Press for 1 second to
activate/de-activate silent mode. 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
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 strength indicator 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
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.
Fig. 5
2.2.3 CABLE DETECTION MODE EXAMPLES
1. Automatic mode
Fig. 6
2. Manual mode
Fig. 7
3. Mains voltage identification mode
Fig. 8
10 Model 6681 Cable Locator