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3m drive thru intercom system manual

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3m drive thru intercom system manualInstallation ManualTable of Contents. Overview. 5. Safety Information. 5. Other Conventions. 6. Installation. 10. Overview of Installation. 10. Required Materials (Not Supplied). 10. Design the Installation. 10. Install the Battery Charger. 13. Install the Order Point Speaker and Microphone Assemblies. 16. Install the Vehicle Detector(s). 16. Install the Base Station. 20. Installing Accessory Boards in the Base Station. 29. Power Up. 33. Configuration. 34. Enter Configuration Mode. 34. Navigating the Base Station Display. 34. Configuring with a Computer. 36. Switching between Lane1 and Lane2. 37. Menu options for Lane1 and Lane2. 38. Change Basic Volume Settings. 40. Change the Monitor Volume. 41. Change the Night Volume. 42. Registering Headsets. 43. Change Noise Reduction Level. 44. Set System Date and Time. 45. Change Global Settings. 45. Order Taking Modes Setup. 50. Change Site Scheduling. 50. Change Site Information. 51. Digital IO Setup. 51. Change Passcodes. 52. Split and Cross Lane Mode. 52. Installer Setup. 53. Factory Setup (Restore Factory Defaults). 54. Create and Load Templates. 54. Reboot System. 54. Check the Revision Levels. 54. Backup Intercom Module. 55. Change the Microphone Preamp Gain. 55. Installer Access. 55. Troubleshooting. 57. Headset Indicator Lights. 57. General Troubleshooting. 59. Battery and Battery Charger Troubleshooting. 61. Appendix: Declaration of Conformity. 62. Appendix: Base Station Specifications. 65. Physical. 65. Electrical. 65. Functional. 65. Antennas. 65. Magnetic Loop Detectors. 65. Installation Manual. Page 3 of 76Appendix: Induction Loop and Vehicle Detector Board Specifications. 66. Internal Vehicle Detector Board Specifications. 66. Saw - In Loop Specifications. 66. Prefab Loop Specifications. 66. Appendix: G5 Charger Specifications. 67. Physical. 67. Electrical. 67. Functional. 67. Appendix: Best Practices. 68. PreAmp Setting. 68. Volume Control. 68. Optimizing the Installation. 68.http://remont-bez-zabot.ru/files/file/3m_static_sensor_manual.xml

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Installation Guidelines — Separate Housings. 70. Installation Guidelines — Single Housing. 71. Appendix: Loop and cable condition test. 73. Index. 74. Page 4 of 76. Installation ManualOverview. Safety Information. Safety Rules. Read, understand, and follow all safety information contained in these. Failure to follow allIntended Use. G5 are intended for use to provide 2-way radio-frequency audio communicationThis system requires professional installation by 3M authorized serviceG5B1 Installation Instructions and operated as specified in G5 Basestation. Model G5B1 Operating Instructions in quick service drive-through restaurantsIt has not been evaluated for other uses or locations. Signal Words. Explanation of Signal Word ConsequencesSystem WarningsDisconnect power to the receptacle before installing or removing the. Base Station Power Supply. When removing receptacle cover screw,Use only with duplex receptacle having center screw. Secure unit inIf power supply is supplied with a grounding pin, connect directly to a. Do not use G5 Basestation Model G5B1 or the XT-1 Headset or the. G5 Battery Charger if the power supply cord or enclosure isInstallation Manual. Page 5 of 76Use the power supply indoors and in dry locations only.The battery used in this device may present a risk of fire or chemicalReplace model G5 battery with Lithium-IonUse of another battery may presentKeep away from children. Do notAlways replace batteries, battery chargers and power supplies withDo not modify this G5 Basestation Model G5B1, or XT-1 Headset or. Install only 3M provided components. Use only 3M approved system replacement parts.Dispose of batteries, power supplies, battery charger and baseOther Conventions. Important Notes and Notes. Important Note. It is strongly recommended that you pay attention to information inside of anNote. You may find information inside of a “Note:” box helpful. FCC and Industry Canada Information.http://www.back2wood.de/userfiles/3m-x15i-projector-manual.xml FCC RF Exposure Statement:The wireless system must not bePage 6 of 76. Installation ManualThe G5 Basestation Model G5B1 complies with FCC RF radiation exposureThis includes any 3MThe use of accessories not approved by 3M Company, including but notFCC Note. This equipment has been tested and found to comply with the limits for a. Class A digital device, pursuant to part 15 of the FCC Rules. These limits areThis equipmentOperation of this equipment in aThis device complies with part 15 of the FCC Rules and with Industry CanadaOperation is subjectCet appareil est conforme avec la norme RSS-210 d'Industrie Canada exempteSon fonctionnement est soumis auxFCC and IC Identifiers. XT-1 Headset:Page 7 of 76Note. Modifications to this device shall not be made without the written consent ofThese products must be disposed respectively recycledUnder European Union (“EU”) Directive on Waste. Electrical and Electronic Equipment, DirectiveFor appropriate disposalEuropean Union CE Information. Note: To ensure that the maximum 20 dBm EIRP output power is notG5 Basestation Model G5B1, the minimum length of RF cable requiredPage 8 of 76. Installation ManualInstallation Manual. Page 9 of 76Installation. Overview of Installation. Installation involves the following main steps:Install the battery charger and begin charging the batteries. Install the order point speaker and microphone assemblies. Install the base station(s). Install the vehicle detector loop(s). Install accessory boards in the base station(s). Wire Greeter Alert trigger inputs. Power up the basestation. Configure the System and Greeter. Required Materials (Not Supplied). Standard or surface-mount conduit (metal or plastic) to enclose allAssortment of sheet metal screws and wall anchors. Sufficient 18 to 20 AWG, (1.02 to 0.81mm diameter) shielded twistedpair audio cable, sufficient in length to connect the speaker andRecommend basic tool kit - screw drivers, pliers, wire strippers,Important Note.http://www.drupalitalia.org/node/67049 The twisted pair of wires for the microphone connection must be shielded forSufficient shielded twisted-pairs of audio cable to connect otherDesign the Installation. There are multiple ways to install the intercom system. Before you begin youPage 10 of 76. Installation ManualDetermine the Drive Thru Type(s). Following is a brief description of each drive thru type. A Single Drive Thru (see Figure 1) is the most common configuration. It is comprised of one lane of traffic with one order point, and one orPick Up. Cash. Order Point. Figure 1. A Tandem Drive Thru (see Figure 2) is comprised of a single lane ofPick Up. Order. Figure 2. Page 11 of 76A Side-by-Side Drive Thru, (See Figure 3) also known as a “Y” orPick Up. Figure 3. A Dual Drive Thru (see Figure 4) is comprised of two completelyThe simplest dual drive thru is twoFigure 4. Page 12 of 76. Installation ManualNumber and Configuration of Base Stations. Regardless of the drive thru type(s), for the G5 Basestation Model G5B1toModel G5B1must be activated. Single drive thrus - G5 Basestation Model G5B1, by default, functions. No activation needed. Tandem, Two lane, and Side-by-Side (Y-Merge) drive thrus - Dual. Lane functionality on the G5 Basestation Model G5B1must beNumber and Type of Vehicle Detectors. G5 Basestation Model G5B1 can accommodate up to two vehicle detectors; oneThere are two basic types of vehicle detector output signal: presence and pulse. Presence detectors are most common. They tell the base station when aThey remain active as long as thePulse detectors are less common. They tell the base station when aInstall the Battery Charger. The G5 headset batteries can be charged while the battery is still in the headsetAll lights and indicationsThe XT-1 headset uses the 6-slot or 3-slot battery charger.The battery charger uses the same power adapter as the basestation. Perform the following steps to install and use the 12-slot battery charger. Select a placement location, either.http://www.audaxdemolizioni.com/images/3m-digital-board-manual.pdf The power outlet must be near the equipment and be accessible, andIf wall mounting is to be used: Due to the many different wall typesSecure the product to the wall withPlace the charger on the surface. Connect the 3M supplied power adaptor between the wall receptacleInsert each battery to be charged into a slot on the charger. The LEDLED indicates a charge of 25. When all LEDS are lit steady green,Installation Manual. Page 13 of 76When charging is complete, the batteries are ready for use.Headset Charging Station, G5 uses the same power adapter as the basestation. Perform the following steps to install and use the Headset Charging Station, G5. Page 14 of 76. Connect the 3M supplied power adaptor between the wall receptacleInsert a G5 Headset (with a G5 battery in it) into the Headset bay on theAlternatively, you may insert the G5 battery to be charged into a slot onThe LED lights on the battery will light up indicating the level ofWhen all LEDS are litWhen charging is complete, the batteries are ready for use. Installation ManualNotes. Power plugs are available on both sides of the stand-alone Battery Charger, G5,Headset Charging Station, G5 in serial using a patch cable. You may also use the power plug on the last charger in the interconnected chainNotes: Wall mounting. Both types of battery chargers can be mounted on the wall. Due to the manyHardware or anchorsHeadset Battery Charger, G5 12-slot. XT-1 6-slot or 3-slot battery charger. Perform the following steps to install and use the 6-slot or 3-slot battery chargerPower Supply Transformers. Six-Slot Charger. Three-Slot Charger. Figure 5. Select a placement location:The power cord should be in place where it cannot be pinched or bent. Install the wall-mount bracket on the wall, if applicable. Place the charger on the wall-mount bracket or surface. Connect the power supply transformer between the wall receptacle andInsert each battery to be charged into a slot on the charger. The chargeInstallation Manual. Page 15 of 76When charging is complete, the batteries are ready for use. Notes. A fully discharged (dead) battery can take as long as 3.Fully charged batteries should be stored whenever they are not in use. Leaving them on the charger does not harm them or waste energy. Install the Order Point Speaker and Microphone Assemblies. Use the recommended speaker and microphone systems listed below and followFor information on wiring the speaker and microphone to the base station, see “. Base Station to Component Wiring,” page 25. Note: Solder and insulate, using heat shrinkable crimp caps, all connectionsIt is recommended that the microphone and speaker be acoustically separated byFor more information refer. Install the Vehicle Detector(s). Follow the instructions provided with the vehicle detectors for installing thePage 16 of 76. Installation ManualFor information on wiring and configuring the vehicle detector(s) to the baseBase Station to Component Wiring,” page 25. For information on installing the vehicle detector circuit boards in the baseInstalling Accessory Boards in the Base Station” on page 29Use the instructions below to assemble these parts to make a fully functional headset. Installing ID Tags. In 3MTM drive-thru systems with Reminder and Alert features in V5 release softwareEach Control Pod and Carrier shipped has a bag enclosed with 8 different colored tagsThe Control Pod and Carrier come pre-installedInstallation Manual. Page 17 of 76Red, Green, Blue, Yellow, Purple, Black, White, Orange. Follow the procedure below to install ID Tags. Remove the existing ID Tag from the Control Pod and Carrier as shown below. Replace this Tag with one of your choice from the bag of ID Tags. Assembling the Control Pod and Carrier. Follow the procedure below to assemble the Control Pod and Carrier to form a fully functionalOn the opposite side of the Headset Carrier, ensure that the Control Pod Locking. Mechanism is in the unlocked position by sliding it all the way to the left. A small flatAlign Charging Contact Block on Control Pod into the Charging Contact Block. Receptacle of the Headset Carrier. Once the Charging Contact Block is set into in the. Receptacle it will act as hinge or pivot point. See Figure 2. Gently press the two halves together until they securely snap into place at the top. YouWhen the Control pod is connected to Carrier you will hear a slight click sound. See. Slide locking mechanism on opposite side of carrier to the locked position. See Figure 1. Insert battery into the now assembled headset. See Figure 4. LED indicator lights on the Headset should start blinking (refer to component. Identification and Description section below). The headset is now ready for registrationsFigure 1. Page 18 of 76. Installation ManualFigure 2. Figure 4. Page 19 of 76Install the Base Station. Choose a Location. Generally, the base station should be located centrally, and close to the orderDo not assume that the location of an old base station is suitable for aThe LCD screen should be approximately 5 ft (1.5 m) from the floor. The base station should be at least 3 ft (1 m) from large metallicThe base station should be within 6 ft (2 m) of a 110VAC, 15A or 20AThe base station should be placed away from inside corners, airborneEasily visible and the keypad accessible. Pre-Testing the Location. Before you permanently mount the base station(s), one person can pre-test theTemporarily mount the base station where you think it may have goodPower the base station. Register two headsets. Change the order taking mode to Always On. Put on two headsets. Tap the talk button on one of the headsets. Walk around the location, talking as you walk. If you can hear yourself in the other headset in all desirableIf you cannot hear yourself in the other headset in all desirableImportant Notes. To ensure the best operating range for your system, locate the base stationIf you plan to use an outside order taker, be sure that the base station’s rangeIf the best location you find is still unable to communicate to all areas, youRemoving and Replacing the Cover. To remove the base station cover. Page 20 of 76. Disconnect power from the base station. Loosen the two screws located at the bottom of the cover. Installation ManualLift the cover upward and away. The display and keypad remain withTo replace the base station cover. Verify there are no obstructions (tools, etc.) in the way of the coverAlign the top edge of the cover with the base. Swing the bottom half of the cover down into place and gently push itTighten the two screwsMount the Station. Perform the following procedure to install the base station (See Figure 6). Remove the base station cover. Figure 6. Attach the base station to the wall using screws and possibly wallInstallation Manual. Page 21 of 76Note. The steps below assume that all of the communication cabling has beenIf not, see “. Follow local best practices and any applicable regulations to route theDo not route power supply wiring withAttach all cables to their appropriate terminals. Connect the base station transformer between the wall outlet and theConnect the Components. This section provides diagrams and information that should help you to properlyBase Station Wiring Terminal Identification. Figure 7 identifies all of the wiring terminals and their labels. The table thatPage 22 of 76. Installation ManualFigure 7. Terminal Label. Definition and Connection Information. All Inputs and OutputsYou can reassign any of these GPIOs to output or take asLane2 connectors respectively. You will have to use the GND0 or GND1 from the GPIO terminal block.Installation Manual. Page 23 of 76AUXILLIARY RELAYS: Two SPDT Relays corresponding to the two Vehicle Detectors. Allows for integration of 3rdRelay 1 common. Connect to relay 1 if normally open relay. Connect to relay 1 if normally closed relay. Relay 2 common. Connect to relay 2 if normally open. Connect to relay 2 if normally closedORDER POINT-1: All wires from this terminal block go to the Lane1 order point or monitor speaker. Positive phase microphone wire for Lane1. Negative phase microphone wire for Lane1. Microphone wire shielding for Lane1. Positive phase order point speaker for Lane1. Negative phase order point speaker for Lane1Must use one of the GND0 or GND1 from GPIOPositive phase grill monitor speaker for Lane1. Negative phase grill monitor speaker for Lane1. Relay 1 common. ORDER POINT-2: All wires from this terminal block go to the Lane1 order point or monitor speaker. Positive phase microphone wire for Lane2. Negative phase microphone wire for Lane2. Microphone wire shielding for Lane2. Page 24 of 76. Installation ManualPositive phase order point speaker for Lane2. Negative phase order point speaker for Lane2Must use one of the GND0 or GND1 from GPIOPositive phase grill monitor speaker for Lane2. Negative phase grill monitor speaker for Lane2. Connect to relay 2 if normally open relay. All of the wires on this terminal block go to the external audio. Connects to IN on external device.Connects to IN on external device.Connects to OUT on external device. Audio can be used to record Greeter. Connects to OUT on external device. Audio can be used to record GreeterBase Station to Component Wiring. Good Wiring Practices. To reduce interference and improve signal quality, use the following practicesA minimal, typical arrangement of the components is shown in Figure 8. Page 25 of 76Figure 8. Figure 9 and Figure 9 and Figure 9 shows the wiring configuration between aIf the installation isNote. Page 26 of 76. Installation ManualFigure 9. Figure 10. Auxiliary Detector Relays. You can use the base station’s vehicle detection circuits to operate an auxiliaryVirtually any device thatThe relay terminals are numbered according to the vehicle detector they are. Vehicle Detector 1. There are several other sources from which to obtain the vehicle detector relayInstallation Manual. Page 27 of 76Simple Circuit Example. Figure 11 shows a simple DC circuit (a light and DC power supply) beingTo make the light turn on when a vehicle isVehicle Detector 3. Controls RELAY3. Figure 11. Vehicle Approach Monitor. Configure any of the 16 GPIOs to be used as a vehicle approach monitor. ThePage 28 of 76. Installation ManualNote. GPIO15 and GPIO16 are located in the Lane1 and Lane2 Order Point. Connectors. Figure 12. Installing Accessory Boards in the Base Station. Accessory boards include up to two vehicle detectors for a dual lane operationInstallation Manual. Page 29 of 76Vehicle Detectors. There are two available installation slots at the bottom of the base station forSensitivity—there are four available sensitivity settings: low, mediumSetting a high sensitivity increasesDelay—you can enable a two second delay that waits until a vehicleThe fourth dip switch must be setPerform the following procedure to install and configure a vehicle detectorPage 30 of 76. Ensure that the base station is unplugged. Remove the base station cover, see page 20. Align the bottom of the vehicle detector board with the installation slot. Slide the top edge of the board between the back of the base station andInstall and gently tighten the screw. Carefully install the three wires between the vehicle detector board andThe left-to-right pin order is theInstallation ManualConfigure the dip switches according to the table on the circuit boardFigure 13. Adjust the sensitivity of vehicle detection by manipulating the top twoEnable or disable a two second detection delay by manipulating theChoose presence or pulse detection by manipulating the fourth switch. Figure 14. Rechargeable Battery The 3M Dynatel Sealed Gel-Cell Battery 2200RB can be used as an auxiliary battery in 3M Dynatel Transmitters 2200 Series. When the rechargeable battery is plugged in, normal output, high output, and maximum output are available. When the rechargeable battery is connected to the transmitter, the alkaline batteries are bypassed. Note: The internal batteries must be at least 5.4 volts. Do not remove the alkaline batteries from the transmitter when using the rechargeable battery. Rechargeable battery, or cigarette lighter adapter cable, is required for Maximum output level. When the third ring is dotted and xpnd' appears below the speaker icon, the receiver is in Expander mode. The function of each key is shown above the key on the display screen. The functions will change, depending on the operation mode of the receiver. Alternate languages can be uploaded to the receiver using the 3M Dynatel PCTools software. All the available frequencies are listed in four groups (Left to Right: Active, Power, Passive, and Auxiliary). Use one of the following three methods to produce a trace signal on the target pipe or cable. A. Direct Connect Method. Connect the black lead to ground rod.Metal contact must be made between the red clip and the transformer cabinet or meter box. The continuity of the circuit will be measured. Always use the lowest frequency available (for example, Rev G 21 Hz). Lower frequencies are less likely to bleed over to other cables in the same area, and are very good for tracing over long distances. If there is no tone and the transmitter indicates that there is an open circuit (OL in the display) this could be an indication of a poor ground, or an open-ended cable or pipe. Use one of the higher frequencies available, at high or maximum power output level. Note: In the ohms mode, the transmitter can detect voltage as well as ohms. If a low voltage is detected, the display will alternate between displaying ohms and volts. When displaying volts, the flag over the V' will be visible. When the voltage magnitude is sufficient to impair the accuracy of the ohms measurement, only voltage will be displayed. Note that the number that flashes alternately with the selected frequency is called the relative current. This provides a good return path for the tracing signal. Press again to select 8 khz, 33 khz or 133 khz. This method uses the internal coil of the transmitter to generate a magnetic field. Higher induction outputs are needed for detecting deeper depths and longer ranges. The 3M Dynatel Advanced Locator 2200M Series 3 Watt transmitters provides two induction frequencies: 33 khz and 133 khz. The 12 Watt transmitter provides three induction frequencies: 8 khz, 33 khz and 133 khz. The 8 khz (low frequency) induction helps in locating shallow facilities, such as risers (12 Watt transmitter only.) The following sections review Non-sweeping and Sweeping (Area) methods used with the Induction Mode. The Sweeping method is utilized when a designated area needs to be swept for non-specific targets, for example, all the buried pipes or conductors in the designated area. Remove any cables from the output jack. Align the Induction Direction arrows on the transmitter with the target conductor. Turn on the transmitter, select the frequency and select high output or max output level for best signal-to-noise ratio. Trace the signal path with the receiver using the Induction Peak mode. The Induction Peak mode of the receiver is a mode in which the upper antenna of the receiver is tuned to minimize distortion from the magnetic field of the transmitter. Use Induction Peak mode when sweeping distance between the transmitter and receiver is m (25 60 feet). Beyond 20 m (60 feet) you can also use the Special (single) Peak or Directional Peak modes. Special (single) Peak can be used for maximum detection depth and range (needed for deep conductors and metal pipes), but would require increased sweep distance separation between the transmitter and receiver. The induction frequency can be changed by pressing the Frequency button on the transmitter. For best results, the receiver should be at least 7.6 m (25 feet) away from the transmitter to begin tracing the target path and have the gain set between 78-84 when starting the sweep. This is used to establish a baseline gain threshold prior to starting a sweep. When crossing a target pipe or cable, the bar graph will close and the signal strength and audio response will increase. Attempting to trace the target close to the transmitter may lead to false indications due to the receiver detecting the large magnetic field radiating from the transmitter. B. Sweeping (Active) Induction Mode Locating Sweeping an area with the 3M Dynatel Advanced Locator 2200M Series allows the location of multiple metallic cables and pipes buried in an area without direct connect or coupler access to the cable or pipe. This approach is effective before any excavation takes place. This will help limit the applied locate signal to a specific facility that provides more position and depth Rev G 23 24 accuracy along with an effective identification. There are two main types of no access or blind Induction Sweeps; Passive Sweeps: These require only the use of the Receiver with passive frequency detection capability. Active Sweeps: These require both the Receiver and Transmitter with Induction capability. This method refers to using a 3M Dynatel Advanced Locator Transmitter as the signal source through induction, instead of relying on passive frequencies that may exist on the buried conductor or metal pipe. Active Induction allows for detecting buried cables and metal pipes in the absence of passive signals and at deep depths and short sections. Dynatel transmitters provide a choice of induction frequencies and output levels. The Dynatel 2200M Series 3 Watt transmitters provides two induction frequencies: 33 khz and 133 khz. Other passive sources exist, such as Cathodic Protection, LF and CATV cable (with NTSC TV CRT turned on). Walk in a grid pattern over the sweep area holding the receiver as shown in the following illustration. Proper placement Rev G 25 and orientation is key to maximize the induced signal in the buried cable or metallic pipe enough to be detectable by the receiver along each path in the swept area. (Note that no signal is induced onto a conductor whose path is perpendicular to the Induction Direction indication.) Place the transmitter in the upright (bottom on ground) position for directional optimization when aligned with the Induction Direction shown on the label on the transmitter. Tip the transmitter over towards the front, and lay it on it's front surface, for multidirectional wide area induction. (Note that no signal is induced onto a conductor whose path is directly under the transmitter). Select the Induction Peak (IndPk) mode and 133 khz frequency on the receiver. Sweeping Sweeping can be done at close distances between the transmitter and receiver. Attempting to trace the target close to the transmitter may lead to false indications due to the receiver detecting the large magnetic field radiating from the transmitter. Induction Peak mode cancels the air signal coming directly from the transmitter induction antenna to the receiver. Increasing the sweep distance between the transmitter and receiver reduces the direct air signal and allows for sensing deeper conductors and sections of metal pipes. Special (single) Peak can be used for maximum detection depth and range (needed for deep conductors and metal pipes), but would require increased sweep distance separation between the transmitter and receiver. 7. Receiver Modes A. Directional Peak (Dir Pk) In Dir Pk mode, four peak antennas are used to analyze the magnetic field pattern. The bar graph indicates signal strength and the directional arrows sense the edges of the magnetic field. As the antenna moves off the target path, the speaker volume decreases and the bar graph opens. Use the bar graph and the numeric signal strength value to locate the exact target path. Left of Target Path Directly Over Target Path Right of Target Path Rev G 27 Once the target path has been located, the arrows at the top of the screen will indicate the location of the target path in relationship to the receiver. Use the maximum numerical signal strength to target the cable or pipe. B. Directional Null (DirNull) In DirNull mode, as the operator approaches the cable or pipe, the numerical signal strength will increase then fall sharply as the receiver crosses the target cable or pipe. The bar graph fills from both sides toward the middle and the receiver speaker volume decreases. As the antenna moves off the target path, the bar graph opens, the signal strength increases, and the speaker volume increases. Gain adjust is automatic in DirNull mode. The center of the DirNull screen provides a compass view' of the target path. For example: Figure 1: If the target path is to the right of the receiver, and running parallel to the operator, the right arrow will display. Figure 2: If the target path is to the left and in front of the operator (not running parallel to the receiver) the arrow will point toward the top left side of the screen. Before marking target path, always use directional peak or special peak mode to verify location Rev G 27 28 C. Special Peak (Spl Pk) Special Peak Mode turns on only the peak antenna closest to the ground. Special Peak Mode is used in applications such as very deep cables or pipes, or when the signal is too weak for directional peak tracing. Left or Right of Target Path D.