White’s Electronics TDI Pro - Manual (Page 23)

TDI Pro Owner’s Guide 23
Chart A
Mandatory settings if you cannot fi nd the ground balance point,
and wish to activate the variable Audio Feature.
#1 - If you have set the Pulse Delay at 10 uS, which is
recommended for average size gold, set the Ground Balance
control at approximately 8.
#2 - If you have set the Pulse Delay midway, set the Ground
Balance at approximately 6.
#3 - If you have set the Pulse Delay at 25 uS, which is
suggested for beaches, relics, or very large targets, set the
Ground Balance at approximately 2.
INITIAL SET-UP -
To get started, set the controls to a mid-range position. For now, the main
concern is setting the threshold, and adjusting the settings for the other
controls.