White’s Electronics TDI Pro - Manual (Page 24)

24 TDI Pro Owner’s Guide
2. Adjust Threshold -
Adjust THRESHOLD control to a faint hum, as noted under “Description of
Controls”. The threshold hum should be set just above the chatter point so
that the hum is reasonably continuous faint, but steady.
3. Get Familiar with a Target Sound-
Put a target on the ground to become familiar with the response of the
detector. Use a nickel or a gold nugget. Please note that the Pulsescan
TDI Pro is a motion detector which means that as the search coil passes
over the target you hear a response only when the search coil is kept in
motion. Stopping over the target, the signal will disappear and you only
hear the threshold hum.
Be sure to use a reasonably sized target, so that you can get a better idea
of what a target sounds like. Note that the target audio will get louder, and
#1 - Set the controls to center-range as follows -
GEB Fine 12 noon
GEB Course “6” or 12 noon
Target Conductivity ALL
Frequency 12 noon
Pulse Delay 10 uS
Gain Clockwise to 6
Volume Fully Clockwise
Check your Battery LED for charge level