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78-8130-6150-0 Rev G 39
10. After a fault is located and pinpointed, move the 3M
™
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 level reference signal indicated in the lower left box labeled Ref. If the reading
is within 12 dB of the reference signal, the operator has found the major fault. If
the fault reading does not fall within 12 db of the reference signal 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.
13. Locating 3M
™
Electronic Markers and
3M
™
iDMarkers
(3M
™
Dynatel
™
Models 2250M-iD and 2273M-iD only)
A. Enabling/Disabling Marker Types
Menu [6] + >>More [SK:4] + Setup [SK:6] + >>More [SK:6d] + Marker Type [SK:6f]
The unit will default with all markers enabled (✓).
1. Press the up/down arrows [SK] to highlight a
utility to enable or disable.
2. Press Enabl/Disabl [SK].
− Only the markers that are enabled () will
be available in the locate mode.
3. Press Locate/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 markers.
1. Press Alert [SK].
− If the unit is in Dir Pk, DirNull or Ind Pk,
a prompt will notify the operator that alert
mode only functions in Special Peak
(Spl Pk) mode.
2. Press Mode [SK Toggle] for Spl Pk.
3. Press Alert On [SK Toggle].