AEMC 6681 User Manual

Cable locator, transmitter/receiver

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Cable Locator
Transmitter/Receiver
Model 6681
User Manual
ENGLISH
®
www.aemc.com
CHAUVIN ARNOUX GROUP

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Summary of Contents for AEMC 6681

  • Page 1 Cable Locator Transmitter/Receiver Model 6681 User Manual ENGLISH ® www.aemc.com CHAUVIN ARNOUX GROUP...
  • Page 2 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.
  • Page 3 & 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...
  • Page 4 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.
  • Page 5 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 low- voltage installations. Example: power supply to electro-domestic devices and portable tools. Model 6681 Cable Locator...
  • Page 6: Table Of Contents

    5.1 TRANSMITTER SPECIFICATIONS ................30 5.2 RECEIVER SPECIFICATIONS .................. 30 5.3 COMPLIANCE WITH INTERNATIONAL STANDARDS ..........31 6. MAINTENANCE ......................32 6.1 CLEANING ........................ 32 6.2 BATTERY REPLACEMENT ..................32 6.3 TRANSMITTER FUSE CHECK ................. 32 Model 6681 Cable Locator...
  • Page 7: Introduction

    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.
  • Page 8: Description

    "+" input/output terminal for voltage measurement and injection signal to system under test. "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. Model 6681 Cable Locator...
  • Page 9: Lcd Screen

    : Flashlight ON/OFF. : Cable detection mode or Line voltage detection mode. MANUAL: Manual or automatic cable detection mode. : Decrease received sensitivity in manual mode. : Increase received sensitivity in manual mode. Buzzer. Fig. 4 Model 6681 Cable Locator...
  • Page 10: Lcd Screen

    Code received. Received signal strength. Voltage present indicator. Silent mode indicator. 2.2.3 CABLE DETECTION MODE EXAMPLES 1. Automatic mode 2. Manual mode Fig. 6 Fig. 7 3. Mains voltage identification mode Fig. 8 Model 6681 Cable Locator...
  • Page 11: Operation

    3. OPERATION GETTING STARTED The best way to learn to use the Model 6681 cable locater is to follow the example below: 3.1.1 SETTING UP Obtain a length of sheathed 3-conductor cable with a cross section of at least 0.0625”.
  • Page 12: Next Step: 2 Transmitter Connection Modes

    3.1.3 NEXT STEP: 2 TRANSMITTER CONNECTION MODES Only these transmitter connection modes can be used to locate conductors with the Model 6681 Cable Locator. Single-pole application Connect the transmitter to a single conductor. If the signal transmitted by the transmitter is a high-frequency signal, only one conductor can be detected and traced.
  • Page 13: Single-Pole Operation

    • The circuit must be de-energized. • The neutral wire and the ground wire must be connected and operational. • Connect the transmitter to the phase and to the ground wire as shown in Fig. 10. Model 6681 Cable Locator...
  • Page 14: Line Breaks Location

    • The circuit must be de-energized. • All the other wires must be grounded as shown in Fig. 11. • Connect the transmitter to the wire under test and to ground as shown in Fig. 11. Model 6681 Cable Locator...
  • Page 15 Refine the detection by setting the power level transmitted by the transmitter and the sensitivity of the receiver in manual mode. • When the wire is traced, the place at which the signal received by the receiver falls off suddenly is the location of the break. Model 6681 Cable Locator...
  • Page 16: Line Breaks Location Using Two Transmitters

    If the receiver goes beyond the location of the break, to the right, it will display F. If the receiver is placed right on the break, no line code will be displayed, because of the superposition of the signals from the two transmitters. Fig. 12 Model 6681 Cable Locator...
  • Page 17: Floor Radient Heating System Fault Detection

    The ground connected to the transmitter can be an auxiliary ground, using the grounding terminal of a power outlet, a properly grounded water pipe, or the mini ground rod supplied with the Model 6681. • When the line is traced, the place at which the signal received by the receiver falls off suddenly is the location of the break.
  • Page 18 The transmitter is connected to a metallic helical tube (flexible metallic tube or pipe) and to an auxiliary ground as shown in Fig. 14. • The measurement method is identical to that used in §3.1. Fig. 14 Model 6681 Cable Locator...
  • Page 19: Metallic Water Supply And Heating Radiators Detection

    Connect the transmitter to the pipe and to ground. Fig. 15 NOTES • The transmitter must be grounded at a safe distance from the pipe to be detected. If the distance is too short, the signals and the circuit cannot be located precisely. Model 6681 Cable Locator...
  • Page 20: Identification Of A Branch Circuit On The Same Floor

    Connect the transmitter as shown in Figure 16. Fig. 16 NOTE: Refine the detection by setting the power level transmitted by the transmitter and the sensitivity of the receiver in manual mode. Model 6681 Cable Locator...
  • Page 21: Underground Circuit Tracing

    The most powerful signals represent the precise position of the circuit. • The longer the distance between the signals transmitted (by the transmitter) and the receiver, the lower the power of the signals received and the lower the depth of detection possible. Model 6681 Cable Locator...
  • Page 22: Two-Pole Operation

    The depth of detection varies according to the medium in which the cable is located and according to the manner of use. It is generally less than 1.5’. • Adjust the power transmitted by the transmitter according to the various radii of detection. Model 6681 Cable Locator...
  • Page 23: Circuit Breakers/Fuses Detection

    • Adjust the power transmitted by the transmitter according to the various radii of detection. • Select manual mode on the receiver and a suitable receive sensitivity to locate the circuit precisely. Model 6681 Cable Locator...
  • Page 24: Short-Circuit Detection

    • If the impedance of the short-circuit is greater than 20Ω, try using the method of searching for a break in a circuit (see §3.2.2) to find the court-circuit. Model 6681 Cable Locator...
  • Page 25: Deep Underground Cables Detection

    6 to 7.5’. The measurement method is identical to that used in §3.1. Fig. 21 NOTE: In this application, the influence of the moisture in the floor or wall on the depth of detection is negligible. Model 6681 Cable Locator...
  • Page 26: Sorting Or Identification Of Conductor Pairs

    • When several transmitters are used, each transmitter must be set to a different transmission code. • If only one transmitter is used, make several measurements with different connections between the transmitter and the various pairs. Model 6681 Cable Locator...
  • Page 27: Increasing The Effective Radius Of Detection Of Live Circuits

    To eliminate this effect, connect as shown in Fig. 24, where the loopback line uses a separate cable to increase the effective radius of detection. With a cable extender (see Fig. 24), it is possible to obtain a detection distance of up to 7.45’. Fig. 24 Model 6681 Cable Locator...
  • Page 28: Line Voltage Identification/Searching For Breaks In The Circuit

    The higher the voltage and the shorter the distance from the circuit, the more bars are displayed and the higher the frequency of the audible signal. Model 6681 Cable Locator...
  • Page 29: Additional Functions

    The transmitter does not have an automatic power-off function. 4.5.2 RECEIVER If you have not pressed a button on the receiver within 10 minutes, the receiver automatically powers OFF. Press the ON/OFF key to turn it back ON. Model 6681 Cable Locator...
  • Page 30: Specifications

    9.5 × 3.07 × 1.52” (241.5 × 78 × 38.5mm) Weight Approximately 9.8 oz (280g) without battery Approximately 12 oz (360g) with battery NOTE: The depth of detection also depends on the material and the specific application. Model 6681 Cable Locator...
  • Page 31: Compliance With International Standards

    COMPLIANCE WITH INTERNATIONAL STANDARDS Electrical Safety Compliant with standards EN 61010-1 Electromagnetic Compatibility Compliant with standard EN 61326-1 Model 6681 Cable Locator...
  • Page 32: Maintenance

    If the fuse is blown, replace it with a fuse of the same specifications. This fuse is a fast-blow type. Do not replace it with a slow-blow or wire type, because this could jeopardize the safety of the instrument. Model 6681 Cable Locator...
  • Page 33 Phone: (800) 945-2362 (Ext. 351) • (603) 749-6434 (Ext. 351) Fax: (603) 742-2346 E-mail: techsupport@aemc.com LIMITED WARRANTY The Model 6681 is warranted to the owner for a period of two years from the date of original purchase against defects in manufacture. This limited warranty is given ® by AEMC Instruments, not by the distributor from whom it was purchased.
  • Page 34 Phone: (800) 945-2362 (Ext. 360) • (603) 749-6434 (Ext. 360) E-mail: repair@aemc.com CAUTION: To protect yourself against in-transit loss, we recommend you insure your returned material. NOTE: You must obtain a CSA# before returning any instrument. Model 6681 Cable Locator...
  • Page 35 NOTES:...
  • Page 36 02/18 99-MAN 100439 v3 Chauvin Arnoux ® , Inc. d.b.a. AEMC ® Instruments 15 Faraday Drive • Dover, NH 03820 USA • Phone: (603) 749-6434 • Fax: (603) 742-2346 www.aemc.com...

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