TRACER PRODUCTS MARKSMAN II TP-9367L Guide De L'utilisateur page 11

Press the power button to turn the unit on. The Marksman
3.
II features an integrated laser pointer. This feature is
designed to aid in pinpointing leak sites. Briefly press
the power button to turn the laser pointer ON. To turn
the laser pointer OFF, briefly press the power button
again.
Once the unit is turned on, it will operate at maximum sensitivity.
The instrument will not beep or tick in an idle state but the battery
LED will illuminate to indicate that the detector has adequate
power. When the battery LED flashes, this indicates that the
batteries are nearing the end of their useful life and will soon
need to be replaced.
Please note: Increasing the volume does not increase the
unit's detection sensitivity. Setting the volume control too
high can lead to operator fatigue.
4. Point the Marksman II in the direction of the suspected leak
or defect and scan the area by making a slow "X" (a vertical
and horizontal type sweeping motion) while keeping the
probe pointed in the general direction of the suspected leak
or defect.
5. The Marksman II will beep when it detects an ultrasonic
disturbance. (When the headphones are plugged in, the unit
will not beep. See Heterodyne Feature on page 10.) To
isolate the ultrasonic disturbance, gradually decrease
sensitivity by slowly dragging your finger down the touch
pad until the beeping stops. The sensitivity level will be
indicated briefly by the number of illuminated LEDs next to
the touch pad.
6. Move closer to the suspected leak or defect, continuing the
sweeping pattern and narrowing the range of the sweep by
smaller patterns until the ticking once again increases. This
will lead to the location of the ultrasonic disturbance. If an
exact location is desired, attach the flexible rubber extension
to the probe and repeat step 5.
7. Repair all leaks or defects as located and repeat the scan.
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