Press the power button to turn the unit on. The Marksman II
3.
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.
Note:
Increasing
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.
the
volume
11
does
not
increase
the