NR-
Operation Manual
8
4. FUNCTION
NR-
Detector represents a portable tool that consists of antenna
system, transmitter and two receivers adjusted for double and triple
frequency of the transmitter’s signal.
In a ‘
search
’ mode the probing signal is converted into a poly-
harmonic one on the radiated nonlinear elements (semi-conductive
items or corroded metal-oxide-metal junctions) and retransmitted,
better say
– scattered into ambient space.
Retransmitted 2
nd
& 3
rd
harmonics of the probing signal are received
and processed by receivers. Signals strength is indicated by LED
bar-graph display: scale
2
(red) and scale
3
(green) accordingly.
Moreover, it is reproduced via remote loudspeaker in the form of
audio signal. The audio signal volume is proportional to the received
harmonic signal level.
The receiver inputs switching as well as headphones volume control
is available from Detector Control panel.
NR-
has two output levels for radiated probing signal and five
levels of the receiver input signal attenuation - each of 10 dB.
The probing signal output level and receiver input signals attenuation
can be switched over by Control panel buttons.
