TS-market LORNET-36 User manual

CERTIFICATE
© TS-Market
USER MANUAL
NON-LINEAR
JUNCTION DETECTOR
«LORNET-36»

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Contents
1.Introduction..........................................3
2. Specications .....................................5
3. Delivery set, design and
accessories.............................................6
4. Purpose of the Detector Basic
Units.........................................................8
5. Safety Measures ...............................15
6. Operation Order................................16
7. Search Recommendation ................19
CERTIFICATE........................................21
1. General ..............................................21
2. Delivery Set.......................................22
3.Warranty .............................................22
4. Importer.............................................23
6. Claims Data.......................................23

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1.Introduction
MW non-linear junction detector “LORNET-36”
(further NLJD) is used for search and location of
electronic devices both in active and switch-off
state.
The detector operation is based on the property of
semiconductor components to generate a response
at the 2d and 3d harmonics when radiated by a
microwave probing signal.
Semiconductor components of articial origin
will have a higher level second harmonic while
semiconductor components of natural origin (e.g.
oxide lms) will have a higher level third harmonic
respectively.
An NLJD analyzes the 2d and 3d harmonics
response of the radiated objects, which enables
a quick and reliable identication of electronic
devices and natural oxide semiconductors.
The NLJD “LORNET-36” automatically nds the
best receiving frequency channel free of noise and
distortion providing awless operation even in the
complicated electromagnetic environment. Digital
processing of a demodulated signal used gives
maximum sensitivity.

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A high gain parabolic antenna (20 dB gain at
3600 MHz) used in the device increases detection
range of non-linear elements and provides
their exact localization in space. For operator’s
convenience the detector is equipped with a laser
pinpointing to indicate the place to which the
maximum power of the probing signal is directed.
There are two types of radiated signals:
-pulse modulated carrier with a duty cycle 160
(Pulse).
-pulse modulated carrier with a duty cycle 20 (CW).
The CW mode is used to tap the detected signal in
the earphones to find active analog radio
microphones and to use the effect of acoustic
feedback to facilitate the search process.
The output power automatic control mode
significantly simplifies operator’s work.
“LORNET-36” simultaneously displays the 2d and
3d harmonics levels at its LED panel. Besides, the
2d and 3d harmonics levels can be estimated in
turn aurally by the click repetition rate reproduced
through a built-in loudspeaker or wireless
earphones.

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2. Specications
2.1. Radiated signal types
•pulse modulated carrier with a duty cycle of
160 (pulse).
•pulse modulated carrier with a duty cycle of
20 (CW).
2.2. Carrier frequency step 13 MHz within a tuning
range of (3581.5 … 3607.5) MHz. Automatic
frequency selection. Possibility of radiation at
the carrier frequency with a minimum noise
level in the 2d harmonic receiver path.
2.3. Maximum radiated power in 160 pulse mode
≥ 18 W
2.4. Maximum radiated power in 20 (CW) duty
cycle mode ≥ 12 W
2.5. Manual or automatic control of the radiated
power level. Power control range of 22 dB
down from the maximum output power value
with 11 level gradations
2.6. Transmitting antenna gain at 3600 MHz
≥ 20dB with a directional pattern width at -3
dB level ≤16°.
2.7. Sensitivity of radio receivers better than -110
dBm (the rst LED lights up).
2.8. Receivers tuning frequencies equal to the
transmitter double and triple frequencies -

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7163…7215 MHz and 10744.5…10822.5 MHz
respectively.
2.9. Receiving path dynamic range ≥ 30 dB.
20 dB range of LED and 10 dB gain control
using the ATT button.
2.10. Time of continuous operation with a lithium-
Ion battery at the maximum radiated power:
•≥3 hours in the pulse duty cycle mode;
•≥2 hours in the CW duty cycle mode.
2.11. Device weight ≤1.6 kg.
2.12. Operating conditions:
• ambient temperature 5…40ºC.
•pressure ≥ 450 mm of mercury
3. Delivery set, design and accessories
3.1. The device includes units and accessories
stated in the Table below:
Description Q-ty
Receiver-transmitter unit with control unit and
built-in battery container 1
Changeable Li-Ion batteries 2
Container for battery charging 1
Charger for receiver-transmitter unit (CH1) 1
Wireless accessories including: receiving device,
earphones and charger (CH2) 1
Technical Description & User manual, Certicate
(in one piece) 1
Package 1

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- The appearance of the device and its charger are
shown in Fig. 1, where:
1. LED indicator;
2. Transceiver antenna unit combined with the
indicator ;
3. Control unit with an accumulator;
4. Parabolic antenna.
5. Screwed up cover of battery section
6.Container for battery charging;
7.Charger for receiver-transmitter unit (CH1);
Fig. 2 shows
a receiver for
wireless phones,
its charger (CH2)
and head phones.
Fig.1.
12 3
4
5
76
Fig.2.

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4. Purpose of the Detector Basic Units
4.1. The transceiver antenna with built-in LED
indicators is used for:
•Analysis of distortion and interference in the
instrument receiving path, which is made
each time the detector transmitter is switched
on. Therefore, if an interfering signal appears
during operation (in a complicated electromag-
netic environment) it is necessary to turn the
detector transmitter off and on from time to
time thus selecting an optimal frequency auto-
matically, which will provide the best sensitivity
as well as detection range of semiconductor
components.
•Generation of microwave probing signal, re-
ception and digital processing of the 2nd and
the 3rd frequency harmonics. Simultaneous
display of the 2nd and the 3rd harmonics
levels gives the opportunity to distinguish with
a high reliability between signals of articial
semiconductors integrated in electronic de-
vices and natural corrosive ones which may
appear at oxidized junction points of various
metals.

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•Demodulation of the 2nd and 3rd harmon-
ics response, their amplication to the level
required for tapping both by earphones and
a built-in loudspeaker. The amplication is
adjustable within a 20 dB range. The operator
can listen to demodulated signals of the 2nd
and 3rd harmonics in turn.
•Indication of the transmitter power level (1) as
well as of the 2nd (2) and 3rd (3) harmonics
levels (Fig. 3).
Fig. 3.
1 2 3

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Fig. 4.
4.2. Hinge joint of the transceiver antenna unit with
a knob (see Fig.4) is designed to transform
the unit into transportation position.
Besides, it helps the operator to ix the
antenna in a position convenient for search.
Fig. 4: 1- Fixing device; 2- Hinge joint.
4.3. The control panel is used to control operation
of the detector. It consists of the case
combined with a battery and xed on the
arm. The control board, buttons for operation
modes control and display LEDs are placed in
the package. The control buttons are divided
into two groups by their function: «AUDIO»
placed in the upper half of the panel and
«POWER RF» in the lower half. The
control panel is shown in Fig.5
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