3M 2273E - Manual (Page 18)

LOCATING EMS MARKERS
EMS markers may be detected and located using either the Dynatel™ 2205
or 2206 EMS Marker Locating Accessory. To attach the accessory, slide
the Receiver horizontally into EMS Marker Locating Accessory mounting
slot. Make sure the locking button holds the Receiver securely in the slot.
To separate the units, press the locking button down and slide the Receiver
out of the EMS Marker Locating Accessory mounting slot.
Locating Markers while Tracing Cable Path
To detect markers while tracing the cable path, set the 2205 or 2206
accessory mode switch to the Alert position, and trace the cable path
normally. The internal buzzer in the accessory will alert you to the
proximity of a detected marker.
Note: Do not use Null or Differential modes when using the 2205 or 2206.
Locating Markers using the Receiver
If the buzzer response is too broad, the exact marker position may be
pinpointed by using the Receiver.
Select 577 Hz or 33 kHz on the Accessory. Use a different frequency from
the tracing signal.
Turn the Receiver ON, select Peak mode, and set the frequency to match
the Accessory setting.
Note: The initial Receiver gain in Peak mode is optimized for interfacing
with the 2205 or 2206 Accessory while searching for a marker. Press
only when a marker is detected and the signal is too strong. To search for
a new marker, reset the Receiver gain to the initial setting by turning its
power OFF and back ON, or pressing
and then re-selecting the Peak
mode.
Refer the EMS Marker Locating Accessory operating instructions for
further information.
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