Display Screen; Sensitivity Ct, Pb Sensitivity / Ct Volume - AKA T72 Operating Manual

DISPLAY SCREEN

In search mode the display device displays the Hodograph information of detected objects and
information about the current operation modes.
VDI-number "Visual Discrimination Indication". This is the index of electrical conductivity of the
object or the angle between the vertical axis and the predominant direction of the hodograph (time
curve). In this case, hodographs which are on the left side of the screen have a negative VDI, and the
right - have a positive VDI number. The amplitude of the signal, from detected objects, is displayed in
standard numerical units
ST SENSITIVITY, RT SENSITIVITY / VOLUME
This section introduces the three main parameters that you'll use most often. For each of these
settings there is an individual button on the control panel.
ST SENS [1 .. 14]. Increasing this setting allows you to increase the depth of targets you're searching
for, but it reduces the accuracy of identification and increases the risk of false positives. The
recommended value is 9-10. Warning! Setting of the ST sensitivity above 11, and especially 14 can
lead to a significant increase in the amount of false positives from the soil in high salinity or when
bumping the search coil.
RT SENS [0 .. 9]. Adjusts the sensitivity of the threshold or RT channel you hear constantly during the
search. The value of this parameter is set as a compromise between sensitivity and comfort.
Increasing this value increases sensitivity in the threshold channel. However this can reduce the
comfort in searching. Recommended settings are 6-7.
VOLUME [1 .. 9]. This setting adjusts the overall volume of the audio response from detected objects.
Select the value based upon individual comfort preference. The current values of these parameters
are displayed on the screen above the relative buttons. To change any of these settings press the
appropriate button. The value of the selected option is highlighted on the screen with a rectangle
around the appropriate value. Press the button - or + to set the required value. In order to exit the
parameters simply click the button again. When neither the RT, ST or Volume values are displayed on
screen - the buttons + and - will now act as on / off modes for the Turbo and S-algorithm, (see below)
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