Series Manual. Version September, 2010
Contents
1. Analysis of distortion and interference in the instrument receiving path which is made each time the transmitter is switched on Therefore if an interfering signal appears during operation in a complicated electromagnetic environment it is necessary to turn the detector transmitter off and on from time to time thus selecting an optimal frequency automatically providing the best sensitivity and detection range of semiconductor components Generation of CW or pulsed RF signal Reception 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 artificial semiconductors integrated in electronic devices and natural corrosive ones which appear at oxidation of connecting points of various metals Demodulation of the 2nd and 3rd harmonics response their amplification to the level required for tapping both to earphones and built in loudspeaker The am plification 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 probing signal levels 1 as well as of the 2nd 2 and 3rd 3 harmonics levels Fig 2 3 Fig 2 4 2 Hinge joint of the transceiver antenna unit with a knob is designed to transform the unit into transportation position see Fig 3 Besides it helps the operator to2. 14 Marks in the Certificate should be done in time 1 5 All records in the Certificate should be made by ink only distinctly and carefully All unauthorized erasures blots and corrections are not permissible 1 6 It is forbidden to make any notes or records in the fields and on the cover of the Certificate 24 2 Delivery set Name Transceiver antenna unit with a control panel and a built in battery with a charger Power adapter option 3 Warranty Wireless phones included a receiver and earphones 3 1 Warranty period for LORNET is 18 months upon supply to the customer 3 2 Life time is 6 years 3 3 If the device fails during warranty period provided the customer has followed all the operation transportation and storage rules the manufacturer is to make the repair free of charge or replace the device 34 Warranty does not cover power elements 25 6 Importer TS Market Ltd Building 10 1 Sosnovaya Alleya Zelenograd Moscow the Russian Federation 124489 Tel 7 495 638 8800 Fax 7 499 940 9575 www ts market com support ts market com 7 Claims Data In case of a package damage during transportation claims are applied to the transportation organization according to the respective regulations If the delivery set is not complete or the NLJD is damaged provided thatits package is not damaged an Act is made together with a representative of the ma
3. by phones Switch over acoustic indication to the head phones mode pressing the corresponding button on the control panel see 2 in Fig 4 and turning wireless phones on according to their User Manual 20 Attention 1 Do not direct the antenna towards the operator and people nearby 2 While operating the device constantly monitor batteries state replacing them in time by the indicators signal The batteries must be kept fully charged 3 Charging should be done with a charger supplied with the instrument only 4 Self assembling or disassembling and use of undue chargers is forbidden 5 When the operation is finished or during long operation breaks it is recommended to remove the battery from the detector 6 To avoid short circuiting of leads see 1 in Fig 6 batteries are to be kept in an iso lated case when not used 21 T 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 In the CW mode it is recommended to use manual operation mode Man only 74 Place the antenna unit parallel to the surface examined at the distance not exceeding 10cm 7 5 Slowly moving the antenna unit parallel to the surface examined and changing orientation of antennas analyze changes in the signal received at t
4. fix antenna in a position convenient for search work Lornet advanced Non Linear Junction Detector Fig 3 1 Fixing device 2 Hinge joint 4 3 The control panel is used to control operation of the detector It consists of a case combined with a battery and fixed on the arm Control board buttons for operation modes control and display LEDs are placed in the package 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 Control panel is shown in Fig 4 The following buttons refer to AUDIO group 10 Fig 4 11 LEDs and LSTN button for switching of acoustic indication to the output of the 2nd or 3rd harmonics LEDs and OUT button for switching acoustic output to earphones or a built in loudspeaker LEDs and RF button for switching between types of the radiated signal CW continuous PULSE pulsed The following buttons are referred to POWER RF group LEDs and PWR button to switch on off the probing signal transmitter When the instrument is switched on the automatic mode of output power control AUTO is set by default To switch over to a manual mode of output power control MNL press one of the LEVEL buttons when a transmitter is turned on To return to the automatic mode turn the transmitter off and then turn it on 5 6 LED and a button for receiving unit attenuator control 7 8 LEVEL buttons
5. for control of radiated signal 12 power in MNL and AUTO modes 7 high low It is possible to set the maximum power level by pressing LEVEL button 7 high low in AUTO mode before the probing signal transmitter is turned on 9 10 Volume buttons for volume control high low Functions of control panel indicators continuous light of any indicator corresponds to on position ab sence of light to off position Simultaneous flickering of all indicators on the panel shows that the battery is discharged and needs to be replaced 44 On the side surface of the control panel see 1 in Fig 5 a slide type power switch is placed A slide position corresponding to ON is marked by a contrast point The device operates only when a charged battery is connected to it A battery is screwed on the back side of the control panel The appearance of a battery is shown in Fig 6 While a battery is being screwed on the positive battery lead must not be short circuited with a case see 1 in Fig 5 Attention f the instrument has not been in operation for a long period it is rec ommended to remove the battery from the device and keep it separately 13 4 5 Battery charging is to be made with a power adapter and a battery charger supplied with the instrument only Using other chargers is not allowed For charging it is necessary to connect a low voltage connector of the power adapter to the Socket placed
6. underneath the front side of the control panel see 1 in Fig 6 A red LED see 2 in Fig 6 is lighting while charging see 2 in Fig 6 When a battery is completely charged a red LED goes out and a green LED lights up see 3 in Fig 6 14 Fig 6 Charging time of a fully discharged battery does not exceed 5 hours typical value is 3 5 h In case of a failure charging is not complete within five hours a charger switches off automatically both LEDs will go out 4 6 Wireless telephones consist of a receiving device and earphones Appearance of the receiving device and position of control units are shown in Fig 7 yay ms ed y epiis euinjoA Jeydepe 4amod 10 789908 syufij Joyeoipul gt JOUVH uo uun 51461 JoyeSipul seuoud 10 194908 S3NOHd 16 Receiving device operation order Using a power adapter supplied with the instrument make sure with a help of the charge indicator that the battery is completely charged Connect head phones to a corresponding socket of a receiving device Turn the receiving device on by a slide type switch control by the turn on indicator Using volume control set a comfortable volume level If the receiving device is turned on when the detector is off then there is only a noise signal in the head phones at higher volume After turning on aco
7. HANDHELD NON LINEAR JUNCTION DETECTOR LORNET USER MANUAL CERTIFICATE TS Market Contents USER MANUAL ss 3 1 Introduction 3 2 Specifications 4 3 Delivery set and accessories 6 4 Purpose of the Detector Basic Units 8 5 Safety Measures 6 Operation Order 7 Search Recommendation 22 CERTIFICATE irc ncn rice 24 1 24 2 Delivery 25 3 Warranty 25 6 Importer 26 T Claims Data 26 USER MANUAL 1 Introduction The non linear junction detector LORNET further NLJD is used for search and location of electronic devices both in active and switch off state The detector opera tion is based on the property of semiconductor components to generate a response at the 2d and 3d harmonics when radiated by an RF probing signal Semiconductor components of artificial origin will have a higher level second harmonic while semi conductor components of natural origin e g oxide films 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 identification of electronic devices and natural oxide semiconductors The NLJD LORNET automatically finds the best receiving frequency channel free of noise and distortion providing flawless operation even
8. he 2nd and 3rd har monics visually by the indicator aurally the click repetition rate should be maximum 7 6 Analysis ofthe received 2nd and 3rd harmonics levels is made by number of LEDs lighting on the corresponding indicator scale 22 7 7 Remove the antenna unit from the surface examined or decrease output power and repeat measurements stated in 7 5 of the present manual For a more accurate location as well as for protection of receiving devices from overload it is possible to de crease the signal level using attenuators 7 8 When an artificial p n transition is found you will normally see stable lighting of the 2nd harmonic indicator LEDs While rapping at the suspected place of a p n transition readings of LEDs do not change 7 9 When a natural p n transition is found you will observe stable lighting of the 3rd harmonic indicator LEDs While rapping at the examined surface intensively readings of indicators by the 3rd 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 23 CERTIFICATE 1 General 1 1 Before operation thoroughly study User Manual for LORNET 1 2 The Certificate is included in the delivery set and should be always kept with the instrument 1 3 If the device is sent for repair to a different place during operation the Certificate is to be shipped with the instrument
9. in the complicated electro magnetic environment The frequency tuning algorithm implemented in LORNET automatically selects the RF probing signal frequency such that the noise level in 2d harmonic receiving channel is held minimal mis digital processing of a demodulated signal gives maximum sensitivity There are two types of radiated signals continuous wave carrier CW pulse modulated carrier with a duty cycle of 1 pulse This enables to combine wide detection range and reliable identification of the de vices found Output power automatic control mode significantly simplifies _ operators work LOR NET simultaneously displays the 2d and 3d harmonics levels at its LED panel Be sides the 2d and 3d harmonics levels can be estimated in turn aurally by click repetition rate reproduced through a built in loudspeaker or wireless earphones 2 Specifications 2 1 Radiated signal types continuous wave carrier pulse modulated carrier with a duty cycle 196 2 2 Carrier frequency step 0 2MHz within a tuning range of 890 891 2 Automatic frequency selection Possibility of radiation at the carrier frequency with a minimum noise level in the 2d harmonic receiver path 4 2 3 Maximum radiated power in the CW mode lt 2W 24 Peak radiated power in the pulse mode lt 10W 2 5 Manual or automatic control of the radiated power level Dynamic control range of 3048 down from the maximum output
10. nufacturer If a defect appears during the warranty period the customer is to send the NLJD to the manufacturer with an accompanying letter stating the reason of the claim All claims with a brief description of encountered problems and measures taken are recorded in Table 1 26 28
11. power value with 11 level gradations 2 6 Receivers sensitivity better than 150dBW given a 10dB signal to noise ratio 2 7 Receivers tuning frequencies equal to the transmitter double and triple frequencies 2 8 Receiving path dynamic range z 70dB 2 9 Time of continuous operation with a lithium lon battery at the maximum radiated power 23 hours in the pulse mode 2 1 5 hours in the CW mode unlimited operation time from 220V mains with a power adapter connected 2 10 Equipped device weight lt 1kg 2 11 Operating conditions ambient temperature 5 40 C pressure 2 450mm of mercury 3 Delivery set and accessories No Description Q ty Transceiver antenna assembly with an arm and control panel 4 and a built in battery with a charger Power adapter 1 Wireless phones including receiving device and 1 earphones User manual certificate 1 Package 1 Lepe o Po o The device appearance is shown in Fig 1 where 1 LED indicator 2 Transceiver antenna unit combined with an indicator 3 Telescopic arm 4 Control panel with a power section and a battery fixed underneath Wireless earphones chargers and additional batteries are not shown in the figure Fig 1 4 Purpose of the Detector Basic Units 4 1 The transceiver antenna unit with built in LED indicators shown in Fig 2 is used for 8
12. transmitter pulse mode and the automatic mode of signal power control The power of a radiated signal will change depending on a signal level at the 2nd harmonic receiver input In this mode sound information of the 2nd harmonic response is applied to the loadspeaker or head phones When switching on mode 3 RD by pressing LSTN on the control unit output power of the transmitter is adjusted automatically depending on a signal level at the 3rd harmonic receiver input Sound information of the 3rd harmonic response is applied to the loudspeaker or head phones 19 To switch over to the manual mode of the probing signal power control MNL indicator lights up press one of LEVEL buttons after the probing signal transmitter has been turned on Turn the probing signal transmitter off and then turn it on for a reverse switch over If itis necessary to tap the third harmonic response turn on mode 3 RD using LSTN button on the control panel During operation in premises with a lot of electronic devices you will normally have to decrease the level of the probing signal by 2 4 points counterclockwise from the initial position The optimum level of the probing signal is reached experimentally 6 3 Simultaneous flashing of all indicators on the control panel indicates that the battery is discharged and needs to be replaced urgently In this case the power should be turned off and the battery replaced 64 If a response signal is to be tapped
13. ustic indicator signals corresponding to the operating mode of the detector appear in the earphones 17 5 Safety Measures 5 1 By requirements of electric safety the detector corresponds to protection class 1 according to the Russian standard 52 The instrument is to be operated only by persons who have been duly instructed for safety measures while working with electric and measuring devices with open RF energy radiators 6 Operation Order 6 1 Remove the detector from the package and the battery from a protective case connect the battery to the detector After device transportation at negative temperatures it is necessary to keep the device in the switch off state at room temperature at least for 30 minutes 6 2 To start operation set the battery and turn LORNET on by the power switch placed on the control panel Fig 5 The 2nd and 3rd indicators on the control panel will light up indicating that the 18 detector has been powered on One yellow LED should be lighting on the antenna unit a circle scale of the probing signal power indicator Its initial position corresponds to the maximum power of the probing signal The probing signal transmitter is off itis turned on after pressing PWR button only The 2nd and 3rd harmonics indicators should not light flashing of the first LEDs of the 2nd and 3rd scales is permitted Turn on the probing signal transmitter pressing PWR button This will switch on the
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