Two-person Active Induction Mode Sweeps | 3M 2273M, 2250M-iD

E. Two-person Active Induction Mode Sweeps

In two-person active induction mode sweeps, one person holds the transmitter and the other holds the receiver while walking together in a sweep pattern detecting long conductors in the ground when crossed by transmitter and receiver positions and orientation, as shown below:

Transmitter Set-up

•Remove anything plugged into the Output Jack [T-6] (this will place unit in Induction Mode), select high frequency (200 kHz), or medium frequency (33 kHz or 82 kHz), and highest output power level.

•Hold the transmitter with the lid facing up and align it with the Induction Direction arrow label, as shown on the transmitter, with the receiver

Receiver Set-up

•Set the receiver to the same frequency as the transmitter.

•Select the Induction Peak (Ind Pk) mode, and press the Gain Adjust [4] (+ or -) key until the bar graph is just visible.

Sweeping

•Sweeping can be done at close distances between the transmitter and receiver.

•For best results, the receiver should be at least 25 feet (7.6 m) away from the transmitter to begin tracing the target path and have the gain set between 78-84% when starting the sweep. 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 (Ind Pk) 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. Use Induction Peak (Ind Pk) mode when sweeping distance between the transmitter and receiver is 25–60 feet (7.6–20 m). Beyond 60 feet (20 m) you can also use the Special (single) Peak (Spl Pk) or Directional Peak (Dir Pk) modes.

•Special (single) Peak (Spl Pk) 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.

78-8130-6150-0 Rev G

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3M 2250M-iD, 2273M-iD manual Two-person Active Induction Mode Sweeps, Transmitter Set-up

Contents

3M Dynatel Contents Rev G Rev G Rev G Intended Use Safety Information About This Manual Quick Start Transmitter Battery Installation Receiver Battery Installation Service and Accessories Cleaning 3M Dynatel Transmitter 2273 Keypad and Connector Definitions Maximum Transmitter Output Rechargeable Battery Dynatel 3M Dynatel Receiver 2250M Key Pad and Display Definitions 3M Dynatel Receiver 2273M Key Pad and Display Definitions Main Menu Menu Displays Rev G Rev G Selecting a Language Configuring The ReceiverSetting the Receiver Clock Select Depth Units Menu 6 + More SK4 + Setup SK6 + More SK6d + Tone Freq SK6j Enabling/Disabling FrequenciesCreating User Defined Frequencies Selecting Locating Audio Filtering Power Frequency Interference Direct Connect Method Buried Cables And Pipes Transmitter Connections Rev G Dyna-Coupler Method Induction Method Non-Sweeping Passive Induction Mode Locating Passive Sweeps Sweeping Active Induction Mode Locating One-person Active Induction Mode Sweeps Transmitter Set-up Two-person Active Induction Mode Sweeps Directional Peak Dir Pk Locate/OK 5 + Cable/Pipe SK + Mode SK + Dir Pk SK ToggleLocate/OK 5 + Cable/Pipe SK + Mode SK + DirNull SK Toggle Receiver Modes Special Peak Spl Pk Locate/OK 5 + Cable/Pipe SK + Mode SK + Spl Pk SK Toggle Induction Peak Ind Pk Expanded ModeLocate/OK 5 + Cable/Pipe SK + Mode SK + Ind Pk SK Toggle Depth and Current Estimate Active Frequencies Locating Frequencies Power Frequencies Passive FrequenciesAuxiliary Frequencies Locating in Directional Peak Mode Rev G Determining ADP Depth Locating Active Duct Probes Sondes Transmitter Setup Locating Buried Sheath Faults and Earth Return Faults Pinpointing the Buried Fault Green Band Alert Mode Locating 3M Electronic Markers 3M iD MarkersEnabling/Disabling Marker Types Press Locate/OK Single Marker Locate 3M iD Marker Depth Dual Marker Locate Passive 3M Electronic Marker Non-iD Depth Creating/Editing Templates for 3M iD Markers Creating New TemplatesMenu 6 + Data/Templat SK2 + User Templat SK2c Rev G Editing Templates Writing 3M iD Markers Menu 6 + Write Mode SK1 Press Start Write SK Modifying Marker Data to be Written Press Menu 6 + Write Mode SK1 Rev G Reading 3M iD Markers Reviewing Marker Read/Write History Read HistoryMenu 6 + Data/Templat SK2 + Read History SK2a Communicating with the GPS Device Capturing the GPS Coordinates Capture Mode / ModeGPS Operation Write History SK Path Mapping with GPS Menu 6 + COM Setup SK3 + GIS Menu 6 + Com SK3 + GIS SK or PDA SK Creating Trace Templates Additional Applications Aerial Faults Toning Cable Identification Connection Diagrams Menu 6 + More SK4 + Help SK8 Help Mode Menu 6 + More SK4 + Self Test SK7 Self Test Of Receiver Direct Connect Cables Earth Contact Frame Product Description And Optional AccessoriesStandard Configurations Product Description Optional 3M Accessories for 3M Dynatel Locators Specification Receiver Specifications Detection Depth 3M Non-iD Passive Mode can display a fault resistance up to 10M Ω Transmitter Specifications Rechargeable Battery Information Environmental and Regulatory Specifications Rev G Important Notice Electrical Markets Division