28
USERS INSTRUCTIONS
TRISONIC
TM
SCANNING MODULE
This module plugs into the front end of the instrument.
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.
For general use position the frequency selection to 40 kHz.
Start to scan the test area.
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 FOCUSING 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 DHC2-HH headphones are designed to be worn with hard hats. To use, simply plug the
headset 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.
