Operation Part 1: The Locator


Dynamic Overload Protection™

Dynamic Overload Protection™ (DOP) allows you to locate accurately in areas with high levels of electromagnetic interference, such as sub-stations and beneath high-voltage transmission lines. DOP works by disregarding signal spikes that would otherwise overwhelm the RD7200 locator’s digital signal processor. DOP is an integrated feature of all RD7200 locators. No action is required by the user.


Overload warning

In cases of high levels of electromagnetic interference, the DOP will not be able to prevent the RD7200 from becoming overloaded. If the RD7200 becomes overloaded, users will be alerted by a flashing mode icon. Both the depth and current measurements will be disabled in the event of an overload.


TruDepth™ Measurement

All RD7200 locators use TruDepth™ to measure depth automatically when a good quality reading can be assured.

NOTE: TruDepth only indicates a locate depth when;

  • The locator is correctly oriented above the target line, cable or sonde.
  • The local signal conditions are assessed as be good enough to ensure an accurate reading.

To help you orientate the locator correctly, you can use the locator’s compass feature on the screen

Depth readings are displayed according to your preferred units of measurement.



StrikeAlert detects the possible presence of shallow utilities, and warns the operator with a series of flashing asterisks on the display and an audible alarm, characterized by a rapid warbling sound.

StrikeAlert will activate in Power and Active locate modes.

RD7200 locators are shipped with StrikeAlert enabled by default; this can be disabled by accessing the StrikeAlert (‘ALERT’) menu and setting StrikeAlert to OFF.

StrikeAlert can also be disabled using the RD Manager Online PC software. Refer to the RD Manager Online operation manual for further information.

warning icon.pngWARNING! Muting audio on the locator will disable StrikeAlert Audio alarm.


Swing Warning

The RD7200 locator is equipped with a Swing Warning system.

In order to operate the RD7200 locator properly, this must not be swinged or tilted more than a few degrees from the vertical. Swinging or tilting the locator will affect the locate and depth/current accuracy.

The Swing Warning system will alert operators of excessive swinging, to remind them to use the device correctly.

RD7200 locators are shipped with Swing Warning enabled by default; this can be disabled by accessing the Swing Warning (‘SWING) menu and setting it to OFF.

warning icon.png WARNING! Muting audio on the locator will disable Swing Warning Audio alarm.


Vibration (haptic) Warnings

The RD7200 locators are equipped with a vibration system in the handle, providing haptic feedback to the user when an alarm is active. The handle will vibrate to warn the user of shallow cables/pipes, overload condition and swing warning.

This is a safety feature that can be useful in noisy environments.

RD7200 locators are shipped with Vibration Feedback enabled by default; this can be disabled by accessing the Vibration alert (‘VALRT’) menu and setting it to OFF.

NOTE: The Vibration alert may cause the volume to reduce automatically from level 5 or 4 when using alkaline batteries and if their charge is low.



The transmitter and locator feature a backlight to improve LCD visibility when required. The locator’s backlight is controlled by an ambient light sensor and does not require adjustment by the user. The transmitter’s LCD backlight is activated whenever you press a key. The backlight will automatically switch off after a few minutes.



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