White’s Electronics TDI Pro User Manual
Page 20
20 TDI
Pro
Owner’s Guide
MORE about Target Conductivity is listed under VARIABLE AUDIO
on page 27 of this guide.
GEB, Fine & Coarse (G
ROUND
E
XCLUSION
B
ALANCE
)-
What it does
These two GEB controls FINE & COARSE adjust or balance the inter-
ference from ground mineralization. FINE makes minor adjustments,
COARSE major adjustments. They are only operative when the FINE
control is set clockwise from the OFF position.
When FINE GEB is in the OFF position, the Pulsescan TDI Pro reverts
to a straight pulse induction detector which hears all metal targets with-
out Variable Audio, has no TARGET CONDUCTIVITY option, and no
COARSE or FINE manual ground balance control.
Again, FINE is used to make minor adjustments. COARSE is used to
make major adjustments. In any FINE ON (clockwise from off) position,
the Manual Ground Balance and the Audio Tone features are functional.
How to use it
Ground Balance must be done with the Target Conductivity control set to
All.
To ground balance Pulsescan TDI Pro, the search coil is pumped slowly
up and down from 1 inch near the ground to 6 inches above the ground
while listening for a change in sound.
Start this process with both the FINE and COARSE Controls at the center