DTI GmbH & Co. KG
Choose the ‚AUDIO GAIN’ and set the value to 1. To be able to follow the effect a
slow rise of the click tone is necessary.
Choose the parameter ‘SEARCH MEMORY’ – by the pushbutton ‘F1’. This is an out-
standing parameter. After start it always has the value 11. It always will be stored in
the program memory with this value. So the value has to be adjusted after starting or
loading a program in accordance to the current environment. The detector has 64
searching memories. 33 auf these can be chosen. Every searching memory is calcu-
lated out of 16 measured values. Each of this 16 values represent a certain range of
the detection signal. Tests have shown that the range of 11-15 is a good average to
grant a good functionality with all types of coils. The smaller this value becomes the
higher is the sensitivity for smaller objects. On the other hand the reaction on the
movement of the coil in the magnetic field of the earth and above the soil in case of
mineralization increases. Especially when the Audio Gain it set to high values.
A find adjustment in the lower range will have following effects:
The SOUND GENERATOR doesn’t work in the range minimum to maximum any
more, but reacts in the lower range or not at all. The bargraph display shows the
same behaviour. That doesn’t change if you use bigger objects. The spectrum further
on shows the detection. You will recognize that from the left to the right the first bars
are not shown. For the 28 cm – 50 cm – coils an increasing of the ‘SEARCH MEM-
ORY’ is sufficient. It may be necessary to increase the ‘OBJECT SIZE’. More later in
this manual.
Please proceed following test:
Settings: ‘SEARCH MEMORY’ and ‘AUDIO GAIN’ –
1. Take you test object and move it to the middle of the coil. Stop at the first reaction
and lower the ‘SEARCH MEMORY’. When lowering now the click rate will increase
what means that the searching depth increases. Increase the ‘SEARCH MEMORY’
and the reaction is visa versa. You should do the same test in combination of
‘SEARCH MEMORY’ and ‘SEARCH GAIN’ to observe the reaction.
By the same way you can optimize the characteristics of the detector in the field. Ei-
ther by detecting with the factory settings, better by adjusting using your test object
lying on the soil.
Page 22 of 30
