Lornet-0836. User manual. Version December, 2014. - TS
Contents
1. LORNET 0836 Double Probing Frequency Non Linear Junction Detector TECHNICAL DESCRIPTION amp OPERATION MANUAL CERTIFICATE O TS Market Contents Technical Description sses 3 1 ntrod cti N ss isien 3 2 Technical Parameter 5 3 Delivery Set and Accessories 8 4 Purpose of the Detector Basic Units 10 5 Safety Measures 6 Operation Order 7 Search Recommendation ceee 19 CERTIFICATE 4 ane 20 Te Generali taicccn ie Asna 20 2 Delivery Set i mmmeesrerverrerversesservevsessersersens 21 3 Warranty wn 22 4 Acceptance Certificate 22 5 Package Certificate ssssssssseesssees 23 6 Claims Data nonseresrorvorervorervoresvoreeservenens 24 Technical Description 1 Introduction The double probing frequency non linear junction detector LORNET 0836 further NLJD is used to 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 2nd and 3rd 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 The NLJD analyzes the 2nd and 3rd harmonics response of the radiated objects which enables a quick and reliable identification of elec2. name serial number Packaged by ELVIRA Production Co Ltd according to the requirements stated in the given technical documentation title signature date month year 23 6 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 manufacturer 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 3 Table 3 Claim content Reason measures taken 24
3. 4 Analysis of the received 2nd and 3rd harmon ics levels is made both by number of LEDs light ning on the corresponding indicator scale and by clicks repetition rate in the loudspeaker or phones 7 5 Remove the antenna unit from the surface examined or decrease output power and repeat measurements of the received signal level For more accurate location as well as for protection of receiving devices from overload it is possible to de crease receivers sensitivity using ATT button 7 6 When an artificial p n transition is found you will normally see stable lightning of the 2nd harmonic indi cator LEDs While rapping at the suspected place of a p n transition readings of LEDs do not change 19 7 7 When a natural p n transition is found you will observe stable lightning of the 3rd harmonic indica tor LEDs While rapping at the examined surface intensively readings of indicators by the 3rd har monic 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 CERTIFICATE 1 General 1 1 Before operation study User Manual for LORNET 0836 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 differ ent place during operation the Certificate is to be shipped with the instrument 1 4 Marks in the Certificate should be done in tim
4. ad phones to detect working analog radio microphones due to acoustic bonding Output power automatic control mode significantly simplifies operator s work The NLJD simultaneously displays the 2nd and 3rd harmonics levels at its LED panel An operator can make search at both frequencies simultaneously or at one high or low frequency In case double frequency operation mode is chosen the indicators display the signal level of the receiver which is higher at the moment Besides the 2nd and 3rd harmonics levels can be estimated in turn aurally by click repetition rate reproduced through a built in loudspeaker or wireless earphones 2 Technical Parameters 2 1 Types of radiated signals e pulse modulated carrier with a duty cycle of 0 4 Pulse e pulse modulated carrier with a duty cycle of 6 0 CW e Pulse width 12 us pulse repetition rate 300 Hz or 5 kHz 5 2 2 Receiver and transmitter carriers are given in Table 1 Carrier frequency one of three is chosen by minimum path interference of the corresponding 2nd harmonic receiver automatically Table 1 Frequency Upper range Transmitter MHz 2nd harmonic receiver MHz 3rd harmonic receiver MHz 2 3 Maximum power with duty cycle of 0 4 Pulse not less 25 W in lower range not less in 18 W in upper range 2 4 Maximum power with duty cycle of 6 0 CW not less 6 W in both ranges 2 5 Automatic or manual power control Power c
5. e 1 5 All records in the Certificate should be made by ink only distinctly and carefully All unauthorized erasures blots and corrections are not permissi ble 1 6 Itis forbidden to make any notes or records in the fields and on the cover of the Certificate 20 2 Delivery set Receiver transmitter unit with control unit and built in battery container Changeable Li lon batteries Container for battery charging Charger for receiver transmitter unit CH1 Wireless phones including receiving device earphones and charger CH2 Technical Description amp User manual Certificate in one piece 21 3 Warranty 3 1 Warranty period for LORNET 0836 is 12 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 Non Linear Junction Detector LORNET 0836 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 stamp 5 Package Certificate PACKAGE CERTIFICATE Non Linear Junction Detector LORNET 0836 No
6. instructed for safety measures while working with electric and measur ing devices with open RF energy radiators 5 3 An operator is not recommended to direct an antenna to people or to be himself towards radia tion maximum 15 6 Operation Order 6 1 Remove the detector from the package 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 Turn the detector on by the type slide switch 4 Fig 3 placed on the arm Two indicators RF1 and a loudspeaker LED will light up One yellow LED should light on the circle scale of the probing sig nal power indicator Its initial position corresponds to the maximum power of the probing signal The probing signal transmitter is off it is turned on af ter pressing PWR button 5 only The 2nd and 3rd harmonics indicators should not light 6 3 Turn on the probing signal transmitter pressing PWR button 5 By default RF1 transmitter of the lower frequency range PULSE duty cycle 0 4 transmitter mode and AUTO automatic power con trol are turned on The power of a radiated signal will change depending on a signal level at the 2nd harmonic receiver output In this mode acoustic in formation of the 2nd 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 output power contr
7. monics of the signals received 4 2 The control panel is used to control operation of the detector It is placed on the arm into which a battery is embedded Control board buttons for operation modes control and display LEDs are placed in the case Control panel and its buttons functions are given in Fig 3 Functions of control panel indicators Continuous lighting of any indicator corresponds to ON position absence of lighting to OFF position Simultaneous flickering of all control panel indicators shows a built in battery is discharged and needs to be charged 11 2nd harmonic level Transmitter s power 1 Turn on transmitter s of lower upper or both frequency ranges 3rd harmonic 9 10 volume control buttons 2 Turn on listening to phones or loud speaker 7 8 transmitter s power control buttons 3 Turn on Pulse or CW mode 6 Receivers attenuator control 4 Power switch Indicator for receiver attenuator 5 Turn on transmitter s Fig 3 12 4 3 Battery charging of the receiver transmitter unit is to be made with a battery charger included to the delivery set only Using other chargers is not allowed For charging it is necessary to remove a battery unscrewing a cover at the edge of the arm and place it into a charger CH 1 While a charger is connecting to the power mains a red LED is ligh
8. n this case one can knock strongly in the place of the supposed position here a crack must appear in the loudspeaker earphones 6 6 Simultaneous flickering of all indicators on the control panel indicates that the battery is dis charged Turn the detector power off unscrew a cover at the edge of the arm remove a battery place it into a container and charge it using char ger CH1 6 7 If a response signal is to be listened via phones press the corresponding button 2 Fig 3 and turn a receiving device on cl 4 4 Attention 1 Do not direct the antenna towards the operator and people nearby 2 While operating the device constantly monitor battery state charging it in time by the indicators signal The detector must be kept with a battery charged 3 Charging should be done with a charger included into the delivery set only using of unauthorized chargers are strongly prohibited 18 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 Direct the antenna to the surface under exami nation using a laser beam spot Analyze behavior of the received signal of the 2nd and 3rd harmonics moving a laser beam spot over the surface under examination smoothly and changing the antenna orientation by an indicator visually 7
9. ol buttons after the 16 probing signal transmitter has been turned on Turn the probing signal transmitter off and then turn it on for a reverse switch over using PWR button During operation in premises with a lot of electronic devices it is recommended to work at lower power of the probing signal The optimum probing signal level is determined by experimental way 6 4 Before pressing PWR button 5 one can turn the upper range transmitter on by button 1 Fig 3 Also one can press this button while the lower range transmitter is on here RF2 LED lights up If button 1 is pressed again both transmitter are turned on so both RF1 and RF2 LEDs light up Further pressing this button will turn the lower range transmitter on again and so on 6 5 If button 3 is pressed when one of the transmit ters is on then the transmitter is switched over to CW mode with duty cycle of 6 0 and frequency repetition rate of 5 kHz In this mode a received signal from the 2nd harmonic receiver output pass es via low frequency filter with cutoff frequency of 3 kHz and is applied to the built in loudspeaker and wireless phones The given mode can be used for search of analog radio microphones In this case acoustic bonding must appear when listening to the built in loudspeaker 17 There can be places with unstable electric contact between metallic objects with corrosion in a room under detecting which can generate false response by the 2nd harmonic I
10. ontrol range 20 dB from maximum value divided into 11 level gradations 2 6 Transmittance antenna gain of upper range not less 20 dB beam width by 3 dB level 22 degrees 2 7 Transmittance antenna gain of lower range not less 6 dB beam width by 3 dB level 60 degrees 2 8 Receiver antenna gain of upper range not less 24 dB of lower range not less 8 dB 2 9 Receivers sensitivity better than 110 dBm one LED lights up at the indicator scale 2 10 Receiving path dynamic range 30 dB 20 dB LED indicator range 10 dB attenuator range at receivers input adjusting by ATT button 2 11 Time of continuous operation with a lithium lon battery at the maximum radiated power 22 5 hours in the pulse mode 21 5 hours in the CW mode 7 2 12 Weight of receiver transmitter unit not more 1 kg 2 13 Operating conditions ambient temperature 5 40C pressure 450mm of mercury 3 Delivery Set and Accessories 3 1 The device includes units and accessories stated in the Table 2 below Table 2 No Name Qty unit and built in battery container OE ees Charger for receiver transmitter unit CH1 Wireless phones including receiving device earphones and charger CH2 BE Description amp User GE Certificate in one piece ee Appearance of NLJD is given in Fig 1 where 1 receiver transmitter unit 2 LED indicators 3 control panel 4 power switch 5 screwed up cove
11. r of battery section 6 container for battery charging 7 charger for receiver transmitter unit CH 1 Fig 2 Fig 2 shows a receiver for wireless phones its charger CH 2 and head phones 9 4 Purpose of the Detector Basic Units 4 1 Areceiver transmitter unit is used for 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 inacomplicated 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 UHF 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 10 e Demodulation of the 2nd harmonic response for listening via earphones or a built in loudspeaker An operator can control sound volume An operator can listen to demodulated signals of the 2nd harmonic from lower or upper receiver ranges in turn e Indication of the receiver power level and levels of the 2nd and 3rd har
12. tning at its case When a battery is completely charged the red LED goes out and a green LED lights up Charging time of a fully discharged battery does not exceed 5 hours 4 4 Wireless telephones consist of a receiving de vice earphones and charger CH2 Fig 2 Appearance of the receiving device and position of control units are shown in Fig 4 13 Socket for phones f SN connection Socket for charger connection Power PHONES Charging indicator indicator lights during lights up charging when ON CHARGE POWER Volume control VOLUME Slide type switch Fig 4 Receiving Device 14 4 5 Receiving device operation order Using charger combined with mains plug CH2 included to the delivery set charge a built in battery completely here CHARGE indicator goes out Connect head phones to a corresponding socket Turn the receiving device on by a slide type switch here POWER LED lights up Using volume control set a comfortable volume level e 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 earphones 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 per sons who have been duly
13. tronic devices and natural oxide semiconductors The unique feature of the device in comparison with analogues is that it combines two detectors at different frequencies The frequency of one transmitter is 790 MHz and the other is 3600 MHz Therefore the device has undeniable advantage over single frequency devices due to it is better to detect small sized and high frequency semiconductor devices at high frequency and vice versa itis better to work in wet ground and concrete walls at low frequency e two antennas with wide at low frequency and narrow at high frequency direction diagrams enable to evaluate the situation first at low frequency and then to detect an object precisely using high frequency The NLJD automatically finds the best receiving frequency channel free of noise and distortion providing flawless operation in the complicated electromagnetic environment An embedded parabolic antenna with high gain 20 dB at 3600 MHz enables high precise detection of semiconductor components in space To make operator s work easier the NLJD is equipped with a laser pinpointing a place where an antenna is directed There are two types of radiated signals e pulse modulated carrier with a duty cycle of 0 4 Pulse e pulse modulated carrier with a duty cycle of 6 0 CW CW mode is used to listen to the envelope detector output as well as to the received signal level via a built in loudspeaker and wireless he
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