3M Dynatel 7550 Series - Alert Mode for Path Markers; ID Marker Depth and Passive Marker (Non-ID) Depth

46 78-9000-5020-0 Rev C
F. Alert Mode for Path Markers
While tracing path markers, it is possible to search
for point markers with or without iD. The 3M™
Electronic Marking System (EMS) Marker frequency
will be the same as the path marker frequency.
Step 1. Press Menu/OK [6:Toggle to LOCATE
MENU screen].
Step 2. Press EMSiD/Path [SK].
Step 3. Press Utility [SK Toggle] to select desired
Utility.
Step 4. Press Marker [SK Toggle] to select Alert.
Note: Only the marker types enabled in the setup
menu will be shown.
Step 5. Adjust the Gain [4] down until the bar
graphs open.
− The bar graph will close, the audio will
increase, and the signal strength will be
maximum when the receiver detects a
marker of the specied utility.
− When an EMS/iD marker detected, select
the EMS/iD in Marker [SK Toggle] for
the detected utility marker.
− The unit will switch to Single Marker
Locate in order to pinpoint the marker.
Step 6. Press Marker [SK Toggle] to return to Alert
mode.
G. 3M iD Marker Depth and Passive Marker (Non-iD) Depth
Step 1. Lower the tip of the receiver to the ground over the pinpointed marker.
Step 2. Press DEPTH [5].
− 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 identication number.
A passive marker will display a depth
reading and will not display a serial
number.