Lornet-24 EN Manual - WOSTIMEX Export/Import GmbH
Contents
1. ON indicator lights at PHONES gt turn on Pic Socket for phones connection CHARGE POWER Charger socket Volume control Charge indicator lights during charging Slide type switch Fig 7 Connect head phones to the corresponding socket of the receiving device 6 Turn the receiving device on by a slide type switch control by the turn on indica tor 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 acoustic indicator signals corresponding to the operating mode of the detector appear in the ear phones 5 Safety Measures 5 1 By requirements of electric safety the detector corresponds to protection class 1 5 2 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 the 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 30 minutes 6 2 To start operation set the battery and turn LORNET 24 on by the power switch placed on the control panel Fig 5 The 2 and 32. Volume buttons for volume control t high l low Functions of control aa indicators continuous light of any indicator corresponds to on position absence of light to off position Simul taneous flickering of all indicators on the panel shows that the battery is dis charged and needs to be charged 4 4 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 Each time before operating the device it is recommended to charge the battery completely 4 5 Battery charging is to be made with a battery charger CH1 supplied with the in strument only Using other chargers is not allowed For charging it is necessary to connect a low voltage connector of CH1 to the socket placed at the front edge of the control panel Fig 6 i Fig 6 While charging a red LED is lightning at the CH1 case When a battery is completely charged the red LED goes out and a green LED lights up Charging time of a fully dis charged battery does not exceed 5 hours 4 6 Wireless telephones consist of a receiving device earphones and charger CH2 Appearance of the receiving device and position of control units are shown in Fig 7 Receiving device operation order Using charger CH2 supplied with the instrument make sure that the battery is completely charged by the charge indicator Using other chargers is forbidden
3. a stable lightning of the 2 harmonic indicator LEDs While rapping at the suspected place of a p n transi tion readings of LEDs do not change 7 9 When a natural p n transition is found you will observe a stable lightning of the 3 harmonic indicator LEDs While rapping at the examined surface intensively readings of indicators by the 3 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 8 CERTIFICATE 1 General 1 1 Before operation study User Manual for lt LORNET 24 gt thoroughly 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 or to a different place during operation the Certificate is to be shipped with the instrument 1 4 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 2 Delivery Set A duplex antenna unit with a built in battery A charger for a duplex unit CH1 User Manual Certificate A package bag to keep and transport the device a er a E Wireless phones including head phones a receiver and a charger 1 CH2 E E E a a 3 Warranty
4. cycle 44 pulse This enables to combine wide detection range and reliable identification of the de vices found The output power automatic control mode significantly simplifies operators work LORNET 24 simultaneously displays the 2 and 3 harmonics levels at its LED panel Besides the 2 and 3 harmonics levels can be estimated in turn aurally by the click repetition rate reproduced through a built in loudspeaker or wireless ear phones Detector of the returned UHF signal envelope enables tapping radio microphones and using the acoustic feedback mode which facilitates search work 2 Specifications 2 1 Radiated signal types continuous wave carrier pulse modulated carrier with a duty cycle 44 2 2 Carrier frequency step 2MHz within a tuning range of 2406 2414 MHz Automatic frequency selection Possibility of radiation at the carrier frequency with a minimum noise level in the 2 harmonic receiver path 2 3 Maximum radiated power in the CW mode 20 3W 2 4 Peak radiated power in the pulse mode 210W 2 5 Manual or automatic control of the radiated power level Dynamic control range of 20dB down from the maximum output power value with 11 level gradations 2 6 Receivers sensitivity better than 110dBm one LED lights up at the indicator scale 2 7 Receivers tuning frequencies equal to the transmitter double and triple frequencies 2 8 Receiving path dynamic range 2 20 dB 10dB LED indicator range
5. indicators on the control panel will light up indicating that the detector has been powered on One yellow LED should be lightning 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 it is turned on after pressing PWR button only The 2 and 3 harmonics indicators should not light flashing of the first LEDs of the 2 and 3 scales is permitted Turn the probing signal transmitter on pressing PWR button This will switch on the transmitter pulse mode and the automatic mode of signal power control The radiated signal power will change depending on a signal level at the 2 harmonic receiver input In the given mode sound information of the 2 harmonic response is applied to the loudspeaker or head phones When switching on mode 3 RD by pressing LST on the control unit the output power of the transmitter is adjusted automatically depending on a signal level at the 3 harmonic receiver input Acoustic information of the 3 harmonic response is applied to the loudspeaker or head phones 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 it is necessary to tap the third harmonic response turn o
6. the de tector transmitter off and on from time to time thus se lecting an optimal frequency automatically which will provide the best sensitivity as well as detection range of Fig 1 semiconductor components e Generation of CW or pulsed UHF signal e Reception and digital processing of the 2 and the 3 frequency harmonics Simultaneous display of the 2 and the 3 harmonics levels gives with a high reliability distinguish between the opportunity to signals of artificial semiconductors integrated in electronic devices and natural corrosive ones which may appear at oxidized junction points of various metals e Demodulation of the 2 and oF harmonics response their amplification to the level required for tapping both by earphones and a built in 4 loudspeaker The amplification is adjustable within a 20 dB range The operator can listen to demodulated signals of the 2 and 3 harmonics in turn e Indication of the probing signal levels 1 as well as of the 2 2 and 3 3 harmon ics levels Fig 2 4 2 Flexible joint of the duplex antenna unit with a handle is designed to transform the unit into transportation position see Fig 3 Besides it helps the operator to fix the antenna in a position convenient for search Fig 3 1 Flexible joint handle 2 Flexible joint 4 3 The control panel with a power supply is used to control operation of the detector It consists of the case combined wi
7. 10dB attenuator adjusting range at receivers input 2 9 Time of continuous operation with a lithium lon battery at the maximum radiated power 23 hours in the pulse mode 10 11 12 RDNDND gt 1 5 hours in the CW mode Unlimited operation time from 220 V mains with charger CH1 connected Equipped device weight lt 0 65kg Operating conditions ambient temperature 5 40 C pressure gt 450mm of mercury 3 Delivery Set design and Accessories 3 1 The device includes units and accessories stated in the Table below No Description Q ty 1 A duplex antenna unit with a built in battery 1 2 A charger for a duplex unit CH1 1 3 Wireless phones including head phones 1 a receiver and a charger CH2 4 User Manual Certificate 1 5 A package bag to keep and transport the device 1 The appearance of the device is shown in Fig 1 where 1 LED indicator 2 a duplex antenna unit with indicator 3 acontrol panel with a built in battery Wireless earphones and chargers are not shown 4 Purpose of the Detector Basic Units 4 1 The duplex antenna unit with built in LED indicators see Fig 2 is used for e 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 elec tromagnetic environment it is necessary to turn
8. 3 1 Warranty period for LORNET 24 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 3 4 Warranty does not cover power elements 4 Acceptance Certificate ACCEPTANCE CERTIFICATE Ultra Compact Handheld Non Linear Junction Detector LORNET 24 No name serial number is manufactured and accepted according to obligatory requirements of state standards current technical documentation and is fit for service Technical inspection signature date month year 5 Package Certificate PACKAGE CERTIFICATE Ultra Compact Handheld Non linear Junction Detector LORNET 24 No name serial number Packaged by ELVIRA Production Co Ltd c o WOSTIMEX Export Import GmbH according to the requirements stated in the given technical documentation title signature date month year 10 6 Claims Data In case of a package damage during transportation claims are applied to the transporta tion organization complying to the valid regulations If the delivery set is not complete or the NLJD is damaged provided the package is not damaged an Act is made together with a representative of the manufacturer If a defect appears during warranty period the customer is to send the NL
9. JD to manu facturer with an accompanying letter stating the reason of the claim All claims with a brief description of encountered problems and measures taken are re corded in Table 1 Table 1 Claim content Reason measures taken Notes
10. WOSTIME2E Export Import ULTRA COMPACT HANDHELD NON LINEAR JUNCTION DETECTOR LORNET 24 USER MANUAL CERTIFICATE 2 USER MANUAL 1 Introduction The ultra compact non linear junction detector LORNET 24 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 2 and 3 harmonics when radiated by an UHF probing signal Semiconductor components of artificial origin will have a higher level second harmonic while semiconductor components of natural origin e g oxide films will have a higher level third harmonic respectively An NLJD analyzes the 2 and 3 harmonics response of the radiated objects which enables a quick and reliable iden tification of electronic devices and natural oxide semiconductors The NLJD LORNET 24 automatically finds the best receiving frequency channel free of noise and distortion providing flawless operation even in the complicated electromagnetic environment The frequency tuning algorithm implemented in LORNET 24 automatically selects the probing signal frequency such that the noise level in the 2 harmonic receiving channel is held minimal while 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
11. n mode 3 RD using LST but ton 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 charged urgently In this case the power should be turned off and the battery charged using CH1 7 6 4 If a response signal is to be tapped 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 Attention 1 Do not direct the antenna towards the operator and people nearby 2 While operating the device constantly monitor batteries state charging 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 7 If necessary under complicated interfe
12. rence conditions as well as for more accurate localization and protection of radio receiving devices from overloading attenuators can be used by switching them on consequently using ATT button The insertion loss of each attenuator is 2 dB Number of attenuators 5 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 In the CW mode it is recommended to use manual operation mode Man only 7 4 Place the antenna unit parallel to the surface examined at the distance not exceed ing 10cm 7 5 Slowly moving the antenna unit parallel to the surface examined and changing ori entation of antennas analyze changes in the signal received at the 2 and 3 harmon ics visually by the indicator aurally the click repetition rate should be maximum 7 6 Analysis of the received 2 and 3 harmonics levels is made by number of LEDs lightning on the corresponding indicator scale 7 7 Remove the antenna unit from the surface examined or decrease output power and repeat measurements stated in 7 4 of the present manual For a more accurate loca tion 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
13. th a bat tery and fixed 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 4 The following buttons refer to the AUDIO group 1 LEDs and LST button for switching of acoustic in dication to the output of the 2 or 3 harmonics 2 LEDs and OUT button for switching acoustic out put to earphones or a built in loudspeaker 3 LEDs and RF button for switching between types of the radiated signal CW continuous PULSE pulsed The following buttons refer to the POWER RF group 4 LEDs and PWR button for switching on off the probing signal transmitter After switching on the au tomatic mode of output power control AUTO is set by default To switch over to the manual mode of Fig 4 output power control MNL press either button 7 or button 8 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 Fig 5 7 8 buttons to control radiated signal power in MNL and AUTO modes ft high U low It is possible to set the maximum power level by pressing either button 7 or button 8 in AUTO mode be fore the probing signal transmitter is turned on 9 10
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