Version 1
15
Users instructions
Trisonic™ scanning module
1. This module plugs into the front end of the instrument.
2. Align the pins located at the rear of the module with the four jacks in the front end of the Metered
Pistol Housing (MPH) and plug in.
3. For general use position the frequency selection to 40 kHz.
4. Start to scan the test area.move to any of the other Menu modes by spinning the Sensitivity Con-
trol up or down (clockwise or counter clockwise).
5. When the desired Menu mode is reached, push (Click) the Sensitivity Control in.
6. You may spin to enter and exit any Menu mode in the Set Up mod as long as the trigger on/off
switch is pressed.
Method of airborne detection
The method of air borne detection is to go from the “gross to the fine”. Start at maximum sensitivity
(S=70), constantly reducing the sensitivity and following the bar graph amplitude display to the loudest
point. If there is too much ultrasound in the area, reduce the sensitivity, place the RUBBER FO-CUSING
PROBE (described below) over the scanning module and proceed. Every time the sound level rises to a
point where it is difficult to follow, reduce the sensitivity again and again until you are able to follow the
test sound to its’ loudest point.
Headset
The DHC-HH headphones are designed to be worn with hard hats. To use, simply plug the head-set
cord into the headset Jack on the pistol housing, and place the headphones over your ears.
Rubber focusing probe :
To use, simply slip it over the front of the scanning module or the contact module.
NOTE: To prevent damage to the module plugs, always remove the module BEFORE attaching and/or
removing the Rubber Focusing Probe.
Stethoscope module:
1. Align the pins located at the rear of the module with the four jacks in the front end of the Metered
Pistol Housing (MPH) and plug in.
2. Touch test area.
As with the SCANNING MODULE, go from the “gross” to the “fine”. Start at maximum sensitivity (S=70)
on the Sensitivity Selection dial and proceed to reduce the sensitivity until a satisfactory sound level is
achieved. At times it may be necessary to utilize the STETHOSCOPE MODULE with the sensitivity level
at or near maximum. Occasionally when in this situation stray ultrasound.
Stethoscope extension kit
1. Remove the Stethoscope Module from the Metered Pistol Housing.
2. Unscrew the metal rod in the Stethoscope Module.
3. Look at the thread of the rod you just unscrewed and locate a rod in the kit that has the same
size thread this is the “base piece”.
4. Screw the Base Piece into the Stethoscope Module.
5. If all 78 cm are to be utilized, locate the middle piece. (This is the rod with a female fit-ting at one
end) and screw this piece into the base piece.
6. Screw third “end piece” into middle piece.
7. If a shorter length is desired, omit step 5 and screw “end piece” into “base piece”.
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