8
7. Search Recommendation
7.1.
If possible remove electronic devices from the room examined. If it is impossible,
examination should be done at a decreased radiated power.
7.2.
Set maximum radiated power level and one of the operation modes of the receiver.
7.3.
Analysis of the received 2
nd
and 3
rd
harmonics levels is made both by number of LEDs
lightning on the corresponding indicator scale and by clicks repetition rate in the loudspeaker
or earphones.
7.4.
For more accurate location of the object under searching decrease the transmitter output
power or receivers sensitivity using ATT button.
7.5.
When an artificial
р
-n transition is found one shall normally see stable lightning of the 2
nd
harmonic indicator LEDs. While rapping at the suspected place of a p-n transition, readings of
LEDs do not change.
7.6.
When a natural
р
-n transition is found, one shall observe stable lightning of the 3
rd
harmonic indicator LEDs. While rapping at the examined surface intensively, readings of
indicators by the 3
rd
harmonic will change, as a rule.
The search technique offered does not reflect all nuances which may appear in each exact
case, and represents a recommendation only.
