3M CablePipeFault Locator 25502573 Series User Manual
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36 78-9000-0192-2 Rev D
Step 12. Set the Frequency and Mode of the receiver.
a. Press Freq [SK]
b. Select the same frequency on the
receiver that was selected on the
transmitter by pressing Active [SK
Toggle].
c. Press Menu/OK [5] to save the setting
and return to Locate mode.
d. Press Mode [SK Toggle] until Dir Pk
is displayed.
Step 13. Stand away from the suspected target path and adjust the Gain [3] down until
the Bar Graph [11] ([10] for 2550 locator) opens completely.
Step 14. Walk...](http://img.usermanuals.tech/thumb/96/1613/w64_cablepipefault-locator-25502573-series-1478511061_d-35.png "Page 36
36 78-9000-0192-2 Rev D
Step 12. Set the Frequency and Mode of the receiver.
a. Press Freq [SK]
b. Select the same frequency on the
receiver that was selected on the
transmitter by pressing Active [SK
Toggle].
c. Press Menu/OK [5] to save the setting
and return to Locate mode.
d. Press Mode [SK Toggle] until Dir Pk
is displayed.
Step 13. Stand away from the suspected target path and adjust the Gain [3] down until
the Bar Graph [11] ([10] for 2550 locator) opens completely.
Step 14. Walk...")
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78-9000-0192-2 Rev D 37
Step 18. Measure the Depth and Current occasionally to verify target path.
Note: In order to measure the Depth and Relative Current accurately, the operator
must pinpoint the target pipe or cable, and the receiver handle should be in-line with
the target path.
− While in Dir Pk mode, find the highest Signal Strength [9] ([8] for 2550
locator).
− Lower the tip of the receiver to the ground. Twist the receiver left and right
while watching the Signal Strength [9] ([8] for...](http://img.usermanuals.tech/thumb/96/1613/w64_cablepipefault-locator-25502573-series-1478511061_d-36.png "Page 37
78-9000-0192-2 Rev D 37
Step 18. Measure the Depth and Current occasionally to verify target path.
Note: In order to measure the Depth and Relative Current accurately, the operator
must pinpoint the target pipe or cable, and the receiver handle should be in-line with
the target path.
− While in Dir Pk mode, find the highest Signal Strength [9] ([8] for 2550
locator).
− Lower the tip of the receiver to the ground. Twist the receiver left and right
while watching the Signal Strength [9] ([8] for...")
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Step 8. With the receiver handle perpendicular to the conduit path, locate the ADP
position by moving along the path until the strongest Signal Strength [9] ([8]
for 2550 locator) is found. Adjust Gain [3] up or down when the Bar Graph
[11] ([10] for 2550 locator) remains either fully open or fully closed.
Step 9. Refer to the ADP operating instructions for further information.
A. Determining Active Duct Probe Depth
Step 1. Place the tip of the receiver on the ground...](http://img.usermanuals.tech/thumb/96/1613/w64_cablepipefault-locator-25502573-series-1478511061_d-37.png "Page 38
38 78-9000-0192-2 Rev D
Step 8. With the receiver handle perpendicular to the conduit path, locate the ADP
position by moving along the path until the strongest Signal Strength [9] ([8]
for 2550 locator) is found. Adjust Gain [3] up or down when the Bar Graph
[11] ([10] for 2550 locator) remains either fully open or fully closed.
Step 9. Refer to the ADP operating instructions for further information.
A. Determining Active Duct Probe Depth
Step 1. Place the tip of the receiver on the ground...")
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12. Locating Buried Sheath Faults And Earth
Return Faults
(3M™ Dynatel™ Models 2573 and 2573-iD only)
Note: Remove (disconnect) both the near-end and far-end grounding from the
test section.
A. Transmitter Setup
Note: Do not make any connections while the transmitter is on. Fault loc\
ation will not
work unless the near-end and far-end grounds are disconnected.
Note: This method only works on direct buried cables/conductors. It will\
not work if
the cables/conductors are...](http://img.usermanuals.tech/thumb/96/1613/w64_cablepipefault-locator-25502573-series-1478511061_d-38.png "Page 39
78-9000-0192-2 Rev D 39
12. Locating Buried Sheath Faults And Earth
Return Faults
(3M™ Dynatel™ Models 2573 and 2573-iD only)
Note: Remove (disconnect) both the near-end and far-end grounding from the
test section.
A. Transmitter Setup
Note: Do not make any connections while the transmitter is on. Fault loc\
ation will not
work unless the near-end and far-end grounds are disconnected.
Note: This method only works on direct buried cables/conductors. It will\
not work if
the cables/conductors are...")
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B. Pinpointing the Buried Fault
Step 1. Connect the 3M™ Earth Contact Frame to the External Jack [15] ([14] for 2550
locator) of the receiver using the Earth Contact Frame cable (4 ft. (1.2 m) cable).
Step 2. Press On/Off [1] to power on the receiver. The receiver display screen will
display “Fauly Calibrating” for about 5 seconds.
Step 3. Press Menu/OK [5].
Step 4. Press Fault [SK] to select Fault mode.
Step 5. Hold the receiver in one hand and the Earth Contact Frame...](http://img.usermanuals.tech/thumb/96/1613/w64_cablepipefault-locator-25502573-series-1478511061_d-39.png "Page 40
40 78-9000-0192-2 Rev D
B. Pinpointing the Buried Fault
Step 1. Connect the 3M™ Earth Contact Frame to the External Jack [15] ([14] for 2550
locator) of the receiver using the Earth Contact Frame cable (4 ft. (1.2 m) cable).
Step 2. Press On/Off [1] to power on the receiver. The receiver display screen will
display “Fauly Calibrating” for about 5 seconds.
Step 3. Press Menu/OK [5].
Step 4. Press Fault [SK] to select Fault mode.
Step 5. Hold the receiver in one hand and the Earth Contact Frame...")
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Step 8. When the bar graph fills toward the left (red-and-white-striped Fault Finding
Direction Indicator [8] (See illustration above.)) side of the display, the fault
has been passed and is now behind the operator. Move back, inserting the
3M
™ Earth Contact Frame every few inches, until the arrows alternate back to
green. Mark the point beneath the center of the Earth Contact Frame. Turn the
Earth Contact Frame 90 degrees and insert into the ground over the previously...](http://img.usermanuals.tech/thumb/96/1613/w64_cablepipefault-locator-25502573-series-1478511061_d-40.png "Page 41
78-9000-0192-2 Rev D 41
Step 8. When the bar graph fills toward the left (red-and-white-striped Fault Finding
Direction Indicator [8] (See illustration above.)) side of the display, the fault
has been passed and is now behind the operator. Move back, inserting the
3M
™ Earth Contact Frame every few inches, until the arrows alternate back to
green. Mark the point beneath the center of the Earth Contact Frame. Turn the
Earth Contact Frame 90 degrees and insert into the ground over the previously...")
![Page 42
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13. Locating 3M™ Electronic Markers and 3M™
iD Markers
(3M™ Dynatel™ Models 2550-iD and 2573-iD only)
A. Enabling/Disabling Marker and Path Frequencies
Menu/OK [5:Toggle to MAIN MENU] + >>More [SK:4] + [SK:5] + >>More [SK:d] + >>More
[SK:h] + Marker Type [SK:j]
Step 1. Press [SK1] to select Marker Type or Path
Type.
Step 2. Press the up/down arrows [SK] to highlight
a utility to enable or disable.
Step 3. Press Enabl/Disabl [SK].
− Only the markers that are...](http://img.usermanuals.tech/thumb/96/1613/w64_cablepipefault-locator-25502573-series-1478511061_d-41.png "Page 42
42 78-9000-0192-2 Rev D
13. Locating 3M™ Electronic Markers and 3M™
iD Markers
(3M™ Dynatel™ Models 2550-iD and 2573-iD only)
A. Enabling/Disabling Marker and Path Frequencies
Menu/OK [5:Toggle to MAIN MENU] + >>More [SK:4] + [SK:5] + >>More [SK:d] + >>More
[SK:h] + Marker Type [SK:j]
Step 1. Press [SK1] to select Marker Type or Path
Type.
Step 2. Press the up/down arrows [SK] to highlight
a utility to enable or disable.
Step 3. Press Enabl/Disabl [SK].
− Only the markers that are...")
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78-9000-0192-2 Rev D 43
− The display will return to Special Peak
(Spl Pk) Cable Locate / Alert On.
− If the selected type of utility marker is
detected, a second audio tone will emit
from the unit and the marker bar graph
will fill.
Step 6. To change the type of marker that the unit
will detect in alert mode:
− Press Menu/OK [5] + Marker [SK] +
Markr1 [SK Toggle].
− Select appropriate Marker utility by
pressing Markr1 [SK Toggle].
− Press Menu/OK [5].
− Press Cable/Pipe [SK] to...](http://img.usermanuals.tech/thumb/96/1613/w64_cablepipefault-locator-25502573-series-1478511061_d-42.png "Page 43
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− The display will return to Special Peak
(Spl Pk) Cable Locate / Alert On.
− If the selected type of utility marker is
detected, a second audio tone will emit
from the unit and the marker bar graph
will fill.
Step 6. To change the type of marker that the unit
will detect in alert mode:
− Press Menu/OK [5] + Marker [SK] +
Markr1 [SK Toggle].
− Select appropriate Marker utility by
pressing Markr1 [SK Toggle].
− Press Menu/OK [5].
− Press Cable/Pipe [SK] to...")
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44 78-9000-0192-2 Rev D
D. Dual Marker Locate
Step 1. Press Menu/OK [5:Toggle to LOCATE
MENU display].
Step 2. Press Marker [SK].
Step 3. Press Markr1/Path 1 [SK Toggle] to select
desired Utility.
Step 4. Press Markr2/Path 2 [SK Toggle] to select
desired utility.
Note: Only the marker types enabled in the setup menu will be shown. See 13.A.
Enabling/Disabling Marker Types. When scanning for markers, the Gain Level [7]
should be set high.
− The third and fourth soft key commands will...](http://img.usermanuals.tech/thumb/96/1613/w64_cablepipefault-locator-25502573-series-1478511061_d-43.png "Page 44
44 78-9000-0192-2 Rev D
D. Dual Marker Locate
Step 1. Press Menu/OK [5:Toggle to LOCATE
MENU display].
Step 2. Press Marker [SK].
Step 3. Press Markr1/Path 1 [SK Toggle] to select
desired Utility.
Step 4. Press Markr2/Path 2 [SK Toggle] to select
desired utility.
Note: Only the marker types enabled in the setup menu will be shown. See 13.A.
Enabling/Disabling Marker Types. When scanning for markers, the Gain Level [7]
should be set high.
− The third and fourth soft key commands will...")
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78-9000-0192-2 Rev D 45
Step 3. To save the depth reading, press Mem
Select [SK].
− Five depth readings can be saved with
the time, date, and its identification
(serial) number.
− Save [SK] will place each entry in
sequential order in memory (M1 - M5)
until five readings have been stored.
The receiver will overwrite saved
entries in excess of five, beginning with
M1.
Step 4. Optional step: Press Clear All [SK] to delete all stored depth information.
Step 5. Press Mem Select [SK] to select...](http://img.usermanuals.tech/thumb/96/1613/w64_cablepipefault-locator-25502573-series-1478511061_d-44.png "Page 45
78-9000-0192-2 Rev D 45
Step 3. To save the depth reading, press Mem
Select [SK].
− Five depth readings can be saved with
the time, date, and its identification
(serial) number.
− Save [SK] will place each entry in
sequential order in memory (M1 - M5)
until five readings have been stored.
The receiver will overwrite saved
entries in excess of five, beginning with
M1.
Step 4. Optional step: Press Clear All [SK] to delete all stored depth information.
Step 5. Press Mem Select [SK] to select...")
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Step 4. To access the memory locations, press Mem
Select [SK].
− Save [SK] will place each entry in
sequential order in memory (M1–M5)
until five readings have been stored. The
receiver will overwrite saved entries in
excess of five, beginning with M1.
Step 5. Optional step: Press Clear All [SK] to delete all stored depth information.
Step 6. Press Mem Select [SK] to select a specific memory location (M1 - M5) to store
the depth readings. When the preferred location...](http://img.usermanuals.tech/thumb/96/1613/w64_cablepipefault-locator-25502573-series-1478511061_d-45.png "Page 46
46 78-9000-0192-2 Rev D
Step 4. To access the memory locations, press Mem
Select [SK].
− Save [SK] will place each entry in
sequential order in memory (M1–M5)
until five readings have been stored. The
receiver will overwrite saved entries in
excess of five, beginning with M1.
Step 5. Optional step: Press Clear All [SK] to delete all stored depth information.
Step 6. Press Mem Select [SK] to select a specific memory location (M1 - M5) to store
the depth readings. When the preferred location...")
78-9000-0192-2 Rev D 41 Step 8. When the bar graph fills toward the left (red-and-white-striped Fault Finding Direction Indicator [8] (See illustration above.)) side of the display, the fault has been passed and is now behind the operator. Move back, inserting the 3M ™ Earth Contact Frame every few inches, until the arrows alternate back to green. Mark the point beneath the center of the Earth Contact Frame. Turn the Earth Contact Frame 90 degrees and insert into the ground over the previously marked point. Move the Earth Contact Frame to the left and right (following the directions of the green and red indicator arrows). When the arrows reverse a third time, turn the Earth Contact Frame 90 degrees again. Pinpoint the fault by moving the Earth Contact Frame in the direction of the green and red indicator arrows. The fault is located beneath the center of the Earth Contact Frame when the arrows change from one side to the other this time. Step 9. To verify the fault location, insert the Earth Contact Frame’s red-and-white- striped probe directly on the spot identified above. Pivot the Earth Contact Frame in a circle around the red-and-white-striped leg re-inserting the green- banded leg in the ground every few degrees of the circle (See figure below). The arrow should always point toward the left (red) indicating that the fault is directly below the red-and-white-striped leg. Step 10. After a fault is located and pinpointed, move the Earth Contact Frame about one Earth Contact Frame width away from the fault and insert it in the ground with the green-banded leg towards the fault. Compare the numeric signal level with the fault signal strength level reference indicated in the lower left box labeled REF. If the reading is within 12 dB of the fault signal strength reference, the operator has found the major fault. If the fault reading does not fall within 12 db of the fault signal strength reference reading, multiple faults may exist. The signal level of this secondary fault can be saved by pressing Fault 1 [SK] or Fault 2 [SK]. The fault with the highest reading will be the primary fault. Note: For additional information about locating buried sheath faults and earth return faults, please see the 3M publication Cable and Pipe Locating Techniques at www.3M.com/dynatel.
42 78-9000-0192-2 Rev D 13. Locating 3M™ Electronic Markers and 3M™ iD Markers (3M™ Dynatel™ Models 2550-iD and 2573-iD only) A. Enabling/Disabling Marker and Path Frequencies Menu/OK [5:Toggle to MAIN MENU] + >>More [SK:4] + [SK:5] + >>More [SK:d] + >>More [SK:h] + Marker Type [SK:j] Step 1. Press [SK1] to select Marker Type or Path Type. Step 2. Press the up/down arrows [SK] to highlight a utility to enable or disable. Step 3. Press Enabl/Disabl [SK]. − Only the markers that are enabled (ü) will be available in the locate mode. Step 4. Press Menu/OK [5] to save settings or Exit [SK] to cancel. B. Alert Mode While tracing a cable or pipe, it is possible to search for 3M iD markers. Step 1. Press Alert [SK]. − If the unit is in Dir Pk, DirNull, Ind Pk or T-View modes, a prompt will notify the operator that alert mode only functions in Special Peak (Spl Pk) mode. Step 2. Press Mode [SK Toggle] for Spl Pk. Step 3. Press Alert On [SK Toggle]. − The receiver display will add the Alert bar graph and the type of marker to the display with a prompt to adjust the marker gain. (Note: The marker utility type will default to the last utility type of marker selected in Marker Locate mode. To change the utility type of marker to locate see Step 6 below.) Step 4. Press the Gain [3] until only a small mark on the marker bar graph is visible. Step 5. Press Menu/OK [5] to save the marker gain setting.
78-9000-0192-2 Rev D 43 − The display will return to Special Peak (Spl Pk) Cable Locate / Alert On. − If the selected type of utility marker is detected, a second audio tone will emit from the unit and the marker bar graph will fill. Step 6. To change the type of marker that the unit will detect in alert mode: − Press Menu/OK [5] + Marker [SK] + Markr1 [SK Toggle]. − Select appropriate Marker utility by pressing Markr1 [SK Toggle]. − Press Menu/OK [5]. − Press Cable/Pipe [SK] to return to the locate mode with the newly selected marker type displayed. − Adjust the Gain [3] again per step 4 above. − Press Menu/OK [5]. C. Single Marker or Path Marker Locate Step 1. Press Menu/OK [5:Toggle to LOCATE MENU display] Step 2. Press Marker [SK] Step 3. Press Markr1/Path 1 [SK Toggle] to select desired utility. Step 4. Markr2 should be OFF. Note: Only the marker types enabled in the setup menu will be shown. (See 13.A Enabling/Disabling Marker types). When scanning for markers, the Gain Level [7] should be set high. − When a marker is detected, adjust the Gain [3] down until the Bar Graph [11] ([10] for 2550 locator) opens. − The Bar Graph [11] ([10] for 2550 locator) will close, the audio will be steady, and the Signal Strength [9] ([8] for 2550 locator) will be maximum when the receiver detects a marker of the specified utility and has pinpointed its location. Gain level
44 78-9000-0192-2 Rev D D. Dual Marker Locate Step 1. Press Menu/OK [5:Toggle to LOCATE MENU display]. Step 2. Press Marker [SK]. Step 3. Press Markr1/Path 1 [SK Toggle] to select desired Utility. Step 4. Press Markr2/Path 2 [SK Toggle] to select desired utility. Note: Only the marker types enabled in the setup menu will be shown. See 13.A. Enabling/Disabling Marker Types. When scanning for markers, the Gain Level [7] should be set high. − The third and fourth soft key commands will populate with the types of utilities selected for Marker 1 and Marker 2. Step 5. Adjust the Gain [3] downuntil the Bar Graphs [11] ([10] for 2550 locator) open. − The Bar Graph [11] ([10] for 2550 locator) will close, the audio will increase, and the Signal Strength [9] ([8] for 2550 locator) will increase when the receiver detects a marker of the specified utility. − When one of the two markers is detected, press the “XXX Only” [SK] for the detected utility marker. (“XXX” represents the marker types selected. In the above example, PWR Only and TEL Only.) − The receiver will switch to Single Marker Locate in order to pinpoint the marker (maximize the Signal Strength [9] ([8] for 2550 locator). Step 6. Press Markr2 [SK Toggle] to return to Dual Marker Locate. E. 3M™ iD Marker Depth Step 1. Lower the tip of the receiver to the ground over the pinpointed marker. Step 2. Press DEPTH [4]. − The receiver will examine the marker (Calculating, please wait...) − If the marker is a 3M ™ iD Marker, the receiver will display the depth of the marker, and its identification (serial) number.
78-9000-0192-2 Rev D 45 Step 3. To save the depth reading, press Mem Select [SK]. − Five depth readings can be saved with the time, date, and its identification (serial) number. − Save [SK] will place each entry in sequential order in memory (M1 - M5) until five readings have been stored. The receiver will overwrite saved entries in excess of five, beginning with M1. Step 4. Optional step: Press Clear All [SK] to delete all stored depth information. Step 5. Press Mem Select [SK] to select a specific memory location (M1 - M5) to store the depth readings. When the preferred location appears on the display, press Save [SK]. The display and memory location will populate with the current information. Step 6. Each memory location can be reviewed by pressing Mem Select [SK]. Step 7. Press Menu/OK [5] to return to Marker Locate Mode. F. Passive Electronic Marker (Non-iD) Depth Step 1. Lower the tip of the receiver to the ground over the pinpointed marker. Step 2. Press DEPTH [4]. − The receiver will examine the pinpointed marker. − The display will instruct the operator to raise the unit 6 inches (15.2\ cm) from the ground. Note: This 6-inch (15.2 cm) rise must be exact for the depth reading to be accurate. A suggestion is to utilize a 6 inch (15.2 cm) piece of plastic pipe or wood as a spacer between the ground and the tip of the receiver for this precise measurement. Step 3. Raise the receiver 6 inches (15.2 cm). Press the DEPTH [4] key again. The estimated depth of the marker from ground level will be displayed. − Five depth readings can be saved with the time and date.
46 78-9000-0192-2 Rev D Step 4. To access the memory locations, press Mem Select [SK]. − Save [SK] will place each entry in sequential order in memory (M1–M5) until five readings have been stored. The receiver will overwrite saved entries in excess of five, beginning with M1. Step 5. Optional step: Press Clear All [SK] to delete all stored depth information. Step 6. Press Mem Select [SK] to select a specific memory location (M1 - M5) to store the depth readings. When the preferred location appears on the display, press Save [SK]. The display and memory location will populate with the current information. Step 7. Each memory location can be reviewed by pressing Mem Select [SK Toggle]. Step 8. Press Menu/OK [5] to return to Marker Locate Mode. Note: It is not possible to measure depth on the path markers with this\ locator. 14. Creating/Editing Templates for 3M ™ iD Markers In the User Template display, the operator can create and modify templates to be written 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 receiver via the RS232 Serial Port [16] ([15] for 2550 locator) on the receiver and the provided RS232 cable or RS232-to-USB adapter cable. The 3M ™ Dynatel™ PC Tool Kit Software is available free of charge at www.3M.com/dynatel under the Software section; 2550/2573/2250M/2273M/1420 Locator PC Tools xx.x.x (EXE xx.xMB). A. Creating New Templates Menu/OK [5:Toggle to MAIN MENU] + Data/Template [SK:2] + User Template [SK:c] Step 1. Select Create New by pressing the up/down arrows [SK]. Step 2. Press View/Edit [SK]. Step 3. Name the template. Step 4. Press Modify [SK] to manually enter the name of the template.
78-9000-0192-2 Rev D 47 Step 5. Select User/Edit. Step 6. Press Menu/OK [5]. 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. Step 9. Entry will appear at the top of the display. Step 10. Press Menu/OK [5] when entry is complete. Step 11. Press Menu/OK [5] to save or Exit [SK] to cancel. Note: To clear the previous field entry, select the ‘back arrow’ with the cursor and delete the previous entry. Step 12. Navigate through the fields by pressing the left/right arrows [SK]. Step 13. Press Modify [SK] to populate the highlighted field. Step 14. When modifying the Labels (left hand side of template information) there are three options for editing that are presented: a. UserEdit b. Choosing one of the common (compressed) terms from the available list of terms. c. Del Row (delete row)
48 78-9000-0192-2 Rev D Step 15. When modifying the Descriptions (right hand side of template information) there are four options for editing that are presented: a. UserEdit b. Delete Row c. Last 10 UserEdits d. Show All - lists common compressed terms Step 16. 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 Menu/OK [5]. Step 17. Navigate to the next field by pressing the left/right arrow [SK]. Step 18. Press Modify [SK] to populate the highlighted field. Step 19. Populate additional fields, as needed, using the above procedure Steps 17 and 18. Templates are limited to six Label and six Description fields (256 bits of data total). Step 20. When the template is complete, save the template by pressing Menu/OK [5].
78-9000-0192-2 Rev D 49 B. Editing Templates The operator can select an existing template and make changes to it in the same manner described in 14. A. Creating New Templates. The following save screen will be displayed. Over Write: Saves all modifications that have been made to the original template. Rename: Overwrites the old template with the new name and all modifications. Display will return to the template name field. Modify the name of the template and press Menu/OK [5] to save. 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 Menu/OK [5] to save. Cancel: Clears all modifications made to any unsaved template. Note: User templates can also be created on a PC using 3M ™ Dynatel™ PC Tool Kit Software and then downloaded to the receiver via the RS232 port [16] on the unit and the provided RS232 cable or RS232-to-USB adapter cable.
50 78-9000-0192-2 Rev D 15. 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/OK [5:Toggle to MAIN MENU] + Write Mode [SK:1:1] Step 1. Select a template from the list on the display to be written into the marker by pressing the up/down arrows [SK] to highlight the preferred template. ‘Last Written /Read’ is the most recent data that was written to/read from a marker by the locator. Step 2. Press View/Edit [SK]. − Four Write Mode options will be displayed at the bottom of the screen. [SK1] Overwrite: Will overwrite any data existing on an unlocked marker if ‘Yes’ is selected and ‘No’ will prevent overwrite. − [SK2] X-Type: Choose ‘Yes’ if writing to a Gen 2 marker and ‘No’ if writing to a Gen 1 marker. Gen 2 markers will have an “X” following the serial number that is printed on the attached tag. − [SK3] Marker: Select type of marker to be written by repeatedly pressing Marker [SK Toggle]. − [SK4] Lock/Unlocked: Press [SK4] to toggle between locking and unlocking the marker. The default setting is unlocked and note that a locked unit cannot be modified once locked. If the marker will be locked then a verification screen will appear to ensure that the marker is locked intentionally.