3M Electronic Marking System EMS Marker Locator with iD ReadWrite 7420 User Manual

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Step 11. The prompt line will display:  Download Completed Successfully , when 
finished. The marker types legally allowed in the country selected in Step 6 
above will be activated at this time.
Step 12.  Multiple units may be configured at this point by simply connecting the next 
locator, powering it on, and clicking Download.
Step 13.  Click Exit when all locators have been updated.
C. Enabling/Disabling Marker Types 
Menu [6] + >>More [SK:4] + Setup [SK:6] + >>More [SK:6d] +...

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The Path Marker option is used to locate a path marker, such as EMS Caution Tape of 
choice (TEL, GAS, WTR and WWTR). This mode has two search methods—Search and 
Track—which can be selected in the locate screen through [SK3].
Search Mode: On Mode entry, the Search Mode is optimized for highest signal to noise 
ratio (SNR) that gives maximum detection range.
Track Mode: After locating the path marker using the Search Mode, it is optimized for 
detection area. Once path markers are...

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G. Estimating Depth
Step 1.  Lower the bottom of the locator to the ground over the targeted marker or 
caution tape.
Step 2.  Press Depth [SK].
 
− The locator will calculate the 
estimated depth to the marker or 
caution tape. (Calculating, please 
wait...)
Step 3.  To save the depth reading, press Mem 
Select [SK].
 
− Five depth readings can be saved with 
the time and date.
 
− Save [SK] will place each entry in 
sequential order in memory (M1 - M5) 
until five readings have been...

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5. Creating/Editing Templates for 3M™ iD Markers
In the User Template screen, the operator can create and modify templates for writing 
to iD markers. Note that the easiest way to create user templates is by using the 3M™ 
Dynatel™ PC Tool Kit software on a PC and then downloading them to a locator via 
the RS232 Serial Port [14] on the locator and the provided RS232 cable or RS232-to-
USB adapter cable. The 3M
™ Dynatel™ PC Tool Kit software is available free of charge 
at...

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Step 7. Move the boxed cursor by pressing the left/
right arrows [SK] or up/down arrow [SK] to 
move the cursor up or down.
Step 8.  Press Select  [SK] to enter the alphanumeric 
character.
 
− Entry will appear at the top of the screen.
Step 9.  Press OK [5] when the entries are complete 
and to save the entries, or press Exit [SK] 
to cancel entries. Pressing OK [5], or Exit 
[SK], will return to the template display.
Note: To clear the previous field entry, select 
the ‘back arrow’...

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Step 14. Populate as many fields as possible from 
the drop-down list of common (compressed) 
terms available to conserve marker memory 
space, or choose UserEdit  if a term is not 
found to meet the user's requirements. Select 
term by pressing the up/down arrows [SK] 
and press OK [5].
Step 15.  Navigate to the next field by pressing the 
left/right arrow [SK].
Step 16. Press Modify  [SK] to populate the 
highlighted field.
Step 17.  Populate additional fields, as needed,...

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Save New: Creates a new template containing all information. Original template remains 
unchanged. Display will return to the template name field. Modify the name of the 
template and press OK [5] to save.
Cancel: Clears all modifications made to any unsaved template.
6. Writing 3M™ iD Markers
The Write Mode enables the user to write information into 3M™ iD markers. It is also 
possible to edit the information to be written into an iD Marker.
Menu [6] + Write Mode [SK:1]
Step 1....

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Step 3. Press Menu/OK [SK].
 
− The selected template will be 
displayed. The arrow on the right side 
of the display indicates there is more 
information than can be displayed on 
the screen (scroll down by pressing the 
down arrow [SK]).
Step 4.  Enter user information that will be written 
to this marker. (See 6.A. Modifying Marker 
Data to be Written  section.)
Step 5.  Verify that all information is correct.
Step 6. Hold the locator directly over the top of 
the marker. The...

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The following messages may appear in the writing 
process.
Message 1. If the overwrite option was set to "No" 
and there was data present on the target 
market then the following screen will be 
displayed:  
Message 2.  When writing to a passive marker or the 
wrong frequency then the following will 
be displayed:  
Message 3.  This screen indicates that X-Type 
marker option was incorrectly set to 
"Yes" or "No".  Verify the serial number 
that is displayed on...

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Step 6. The operator may select  User Edit in order 
to ‘type’ the modification, or Delete Row to 
remove the entire row from the template, or 
select  Show All  to display a list of common 
compressed terms. 
Note: Using a common compressed term requires 
less memory in the marker.
Step 7.  Select an option from the list by pressing the 
up/down arrows [SK]. Press OK [5].
Step 8. If User Edit  is selected, the following screen 
will appear.
Step 9.  Move the boxed cursor to the...