High Precision Series LAS180 User`s Manual
Contents
1. ZZZJ L LAS180E Description tA Technical Specification s ZZ Z ZZZZ o User s Manual 2 10 O CO N NN NNN ODD OI O O R A R HL R R O ATE ELECTRONIC 1 Important safety instructions This symbol indicates the presence of important directions for use and information that should be given particular attention so as to use the product properly This symbol indicates the presence of dangerous voltage that may cause the risk of electrical shock Pay the utmost attention and proceed cautiously 1 Follow carefully the attached documentation and keep it for future reference 2 Comply with the warnings 3 Store the packaging and check that all material is in excellent conditions 4 Do not use water near the product do not pour water or any other liquid on the amplifier Do not to use it with wet hands or feet into the water 5 Do not use next to heat sources such as radiators stoves or the like 6 Check the integrity of the mains cable Do not tread on the cable and do not squeeze the plug 7 Connect the plug to a socket equipped with grounding Do not camper the plug If the plug supplied is not consistent with your socket please apply to an electrician for its replacement 8 Connect to supply mains with the same voltage as indicated on the back of the amplifier 9 I2. approved as for what concerns protection against electromagnetic fields high tension and radio interference e Contact qualified personnel User s Manual 4 Introduction Congratulations on choosing XTE device and thanks for trusting us and our products Your device has been carefully planned in the smallest details starting with every part of its equipment till final assemblage All products XTE are made with the main purpose of guaranteeing our clients full satisfaction thus we underline that the product you have choosen uses the most advanced technology An improper use of the device can compromise its correct operation Therefore we recommend you to carefully and correctly use it Read this manual carefully as it contains essential information for a safe use of your device 4 1 Unpacking Immediately inspect the package and its content so as to check whether there are any signs of damage After unpacking check the product and all parts if you notice any damage inform your dealer immediately lt is advisable to save the packaging materials even if the amplifier shows no sign of shipping damage you might have to return it to XTE or to one of its dealers Use the original package only which is the best way to protect the equipment from shipping mishandling 4 2 Assembly Metal framing of all the XTE products is suitable to be supported on a surface table etc and is equipped with separated stirrups for ass
3. ASTER e Compression Limiter e 12 V Loop Ok output for Info Indicator e The unit is expected to work with 230 VCA 50 60 Hz e 1 Unit design Optional Features e LAS180E Headphones Receiver with system info leds and arranged for the 3 5 mm jack headphones connection User s Manual 10 7 Applications What is an induction Loop The induction loop technology is based on electromagnetic transmission and has the unique advantage that the signal is received directly by the user s hearing aid when equipped with a T coil tele magnetic pickup coil A basic induction loop system consists of an amplifier and a loop a single stranded hookup wire that runs along the perimeter of the room When the loop amplifier is fed a signal from a microphone or the house PA system the sound is received wireless by the user s hearing aid without the need for an additional receiver as is required by all other technologies Therefore the induction loop technology is the most popular method for T coil users of providing assisted listening accommodations in stand alone public facilities It is for this reason that more attention is now being given to assisting hearing aid users by installing induction loops in churches public buildings and in some cases the workplace Below is a simple diagram of a loop system loop layout may often be more complicated depending on the environment Source Signal cable ATE ELECTR
4. ATE ELECTRONIC e CIECHONIC sounDanbcommunicationsys tems PROTECT 3 S Low HIGH R LOOP OK INDUCTION LOOP AMPLIFIER LAS 180 High Precision Series LAS180 Induction Loop Amplifier User s Manual o User s Manual 1 10 ATE ELECTRONIC Table of contents oe ee a 12 13 14 15 LAS180 Important safety instructions Declaration of conformity User s liability 3 1 Dangerous output voltage Appa AA 3 2 Radio interferences Introduction 4 1 Umpact ing RAMA AAA 42 Asser boy ta Dessert pAA pa aaa Features mm Applications Front Panel Controls and Indicators Back Panel Controls and Connectors Power Supp yt AA Installation Instructions 11 1 Planning a Loop Systema 11 2 Balanced Mic Line bgoetAARpAPP AAA 11 3 Induction Loop Desig gt gt gt gt gt __ ____Le 11 4 Installing the Loop Systema 11 5 Possible problems with an induction loop system Configuration Example gt gt gt Z Z Z Technical Specification scm 111
5. ONIC 8 Front Panel Controls and Indicators All regulating controls of the LAS180 are adjustable by screw driver to avoid unauthorized misplace Each input has an own Mixing control in front of the compressor limiter The compression level reduced gain is indicated on a bar graph with 4 LED s 0 to 18 dB to allow the user to choose the best volume range for the application The master control sets up the output maximum current that is indicated on the current bar graph with 5 LED s 2 10 A The model indicates power loop OK and the protection status PROTECT LOOP OK POWER of the output level on the front panel The Loop OK lamp only luminescents when the sound runs through the loop and truely indicates that the loop is working The model is suitable as table version and also for 19 installations 9 Back Panel Controls and Connectors The three audio inputs of the LAS180 are equipped with standard XLR jacks The inputs 1 and 2 are microphone level controlled input 3 is selectable by using the blue push button on the rear side between mic and line level Phantom can be activated at all microphone inputs by using the second blue push button on the rear side An 0 dB output for cascade connection of the amplifier and INSERT jack for additional looping devices are available The Loop Ok output is a 12 V output to drive the INFO indicator when the loop is working The loop connections make it possible to co
6. amended by 93 68 EEC Standards Applied EN55103 1 Emissions EN55103 2 Immunity EN60065 Class Safety CE ATE ELECTRONIC 3 User s liability A 3 1 Dangerous output voltage The amplifier can generate hazardous output voltage Do not touch exposed cables of loudspeakers with the amplifier in operation 3 2 Radio interferences A sample of this product has been tested and approved to meet the requirements of the Electromagnetic Compatibility Directive EMC These requirements have been defined so as to provide reasonable protection against dangerous interference of electrical equipment Whenever this product has not been installed or handled according to these guidelines it might interfere with other equipment such as radio receivers However there is no guarantee that they should not occur in a specific installation Should this equipment interfere with transceiver equipment such possibility can be checked by switching on and off the device the user should try to cancel the interference by observing one or more of the following measures e Increase the distance between the device and the receiver e Connect the device to a plug linked to a different circuit with respect to the one to which the receiver is connected Redirect or move the receiver s antenna e Make sure that the unit concerned conforms to the EMC immunity limits CE labelled All electrical equipment sold in the EC should be
7. anced XLR INSERT 0 dB output Phantom power switchable 12 V Info LOOP OK output 12V DC Protection circuits Current limiting short circuit against too high temperature soft start Consumption max power 300 VA Power Requirements 230 VAC 50 60 Hz Dimensions WxHxD 440 x 44 x 200 mm Weight Net 6 5Kg Headphones Receiver LAS 180E with LED sensitivity display CUT Filter and mono headphone 14 Description With the induction loop receiver LAS180E a loop system can be checked and maintained easily fast and uncomplicated The device is especially suitable for responsible staff wherever the induction transmission is installed or for people who need a high quality wireless hearing device without hearing aid The LAS180E receiver is a very compact handy and versatile device it is used as sheer audio receiver for people whose hearing device has no T position or for supervision resp control of the field strength and quality of the transmission of the induction loop system o User s Manual 9 10 ATE ELECTRONIC 1 CONNECTION BUSH FOR HEADSET Headset connection bush to mini jak with a gain of max 100mW 16 Ohm 2 LED FIELD STRENGHT RECEPTION INDICATOR The green LED indicates a reception in the range 50 mV m The yellow LED indicates a reception in the range 100 mV m The red LED indicates a reception in the range 400 mV m 3 CUT FILTER Switch position to ON input low cut filter 400H
8. embly in 19 rack standard Pay particular attention during the installation we remind you that the devices should not be installed in places with High temperatures Dust and excessive humidity Presence of intense magnetic fields Water next to the component Vibrations Closed spaces inhibiting a proper ventilation ATE ELECTRONIC 5 Description The newly developed LAS180 is an Induction Loop Amplifier with professional solution for mounting at Induction Loops The model can cover a square room with 21 x 21 meters or a rectangular room with 40 x 20 meters It has three inputs which can all be used for microphones or input 3 can switched in line level for mixing desks Switchable phantom power for the microphone inputs is existing The LAS150 has been developed to cover areas up to 800 m and it can be connected to professional microphones and line level 6 Features LAS180 is equipped with a whole of features which help in adapting mixer to particular applications e MIC1 MIC2 Microphonic input electronically balanced connected to input sockets for a simple use e MIC3 Mic Line input electronically balanced connected to input sockets for a simple use e A 24 VCC potential is available at the MIC 3 sockets for the eventual direct phantom power supply e Power on Loop Ok and Protect Led indicators and Level meters e Volume separated to each input and main tone High Low and volume control M
9. imple 2 5 mm turn loop cable connected to a 2 way plug at the amplifier s rear side Make sure that the microphone s are placed near the area where the sound is picked up The master control and input control can now be adjusted so that the gain reduction LIMITER measures 12 dB at loud speech microphone It is a good practice to supply to all installations a loop listening device This makes it possible to the responsible person to test the loop periodically and to record the correct working in a logbook Should a listening device not be available adjust the master control in a way that the red OUTPUT LED only flashes at the maximum value Don t let the model work with constant red LED ATE ELECTRONIC Please Note All of the above are guidelines only we always recommend a test loop should be laid as there is no such thing as a basic installation Each job will be unique and will have its own problems or criteria for example metalwork reinforced concrete false ceilings etc 11 8 Possible problems with an induction loop system Some hearing aid users find that they have to turn up the volume on their hearing aid a little when they switch to T but this should not be a problem if the loop has been set up properly However even if the loop system works correctly you might pick up buzzing noises when you set your hearing aid to T or when using a loop listener This is caused by interference from electrical equ
10. ipment such as fluorescent lights dimmer switches or electric cables 12 Configuration Example Simple Induction Loop System Up to 20mx20m Although loop systems are generally designed for use within the area of the loop the loop signal can spill out into other rooms Walls ceilings and floors do not block the magnetic waves from a loop Hearing aid users whose hearing aids are also switched to T and people using a loop listener outside the room may be able to overhear sound or conversations Rooms that are next to each other and rooms directly above and below the loop can be affected This could be a problem for example if a next door neighbour also uses a loop system or if you need to have a confidential conversation You could try to reduce the size of the loop in order to get round this problem you might need to re arrange the seating Double Induction Loop System Over to 20mx20m Multiple Induction Loop System User s Manual Very large Area ATE ELECTRONIC 13 Technical Specifications LAS180 Compressor Limiter For limiting 20 1 with 10 ms access time Dynamics gt 60 dB Harmonic distortion lt 0 3 Loop impedance 0 1 1Q Maximum current gt 15A Root mean square current at 1 kHz gt 10A Input sensitivity 50 dB MIC 0 dB LINE Front Indicators Limiter 4 x LED s output 5 x LED s protect LOOP OK power Audio inputs outputs MIC 1 2 Line Mic 3 bal
11. ize The loop impedance is about equal to the DC resistance The cross section should be chosen so the loop is as near to 0 5 ohm as possible 0 1 to 1 ohm and robust insulation is recommended to minimise the chance of shorting the cable to earth If the impedance is less than 0 1 ohm or greater than 1 ohm there may be degradation of signal To obtain the correct impedance there follows a wire impedance chart and example calculation User s Manual 10 Wire impedance table Cable Diameter Impedance per meter mm Ohm Example Calculation Loop impedance Length of loop x impedance of cable per meter LAS180 can cover a square room with 21 x 21 meters 450m7 Cable Length 84 meters 84x0 0067 0 56Ohm For this example 2 5mm cable would be the preferred option as its DC impedance is nearest to the recommended level of 0 5 Ohm 11 3 Induction Loop Design If a building has a high metal content the sound coverage may be erratic When installing a loop system care should be taken not to install it over large metal objects such as heaters or around metal baseboard moldings The metal acts as a shield and weakens the signal PVC pipe must be use to laied the loop under the floor steel pipe cannot be use 11 4 Installing the Loop System The installation is very easy the model should be put in a suitable place ideally as close as possible to the area which shall be covered The loop cable a s
12. nnect the amplifier with an up to 2 5 mm cable we recommend to use aclamp at the cables ends to close the loop o User s Manual 6 10 ATE ELECTRONIC 10 Power Supply The unit is expected to work with 230 VCA 50 60 Hz distribution system In case of power dysfunction check the outside protection fuses and eventually replace them with others of same calibration if one of them burns out immediately do not go on and have check the unit by qualified personnel Take away plug from 230 VCA electric power socket always before removing fuses and in any case open the unit framing 11 Installation Instructions 11 1 Planning a Loop System Most of the problems with this amplifier occur when the installation hasn t been correctly thought through therefore take some time at the beginning to safe a lot of time after 11 2 Dimensioning the Loop System LAS180 can cover a square room with 21 x 21 meters 450m or a rectangular room with 40 x 20 meters 800m7 The induction loop is routed around the perimeter of the interested area with the cable under the floor in the ceiling under the carpet etc A loop cable is classed as a 2A cable under IEEE 16th Edition wiring regulations As such it must be sited a minimum of 600mm away from telephone mains and control cables Almost any stranded or solid single core cable can be used for the loop provided it is not liable to break and is of the appropriate s
13. nstall the amplifier in compliance with the instructions 10 Do not obstruct the air ducts 11 Disconnect the appliance in case of storm and if unused 12 Connect according to the instructions only User s Manual 10 13 Do not connect input signal higher than that indicated in the manual 14 Do not connect the amplifier output to the input of another channel 15 Do not connect any output of the amplifier to power sources such as battery voltage supply or outlet regardless of the amplifier is on or off 16 Keep the volume controls to a minimum during the amplifier switching on off 17 Do not remove the upper or lower cover there is a risk of electrical shock 18 Do not try to self repair the appliance but apply to qualified personnel 19 Clean with a dry cloth only 20 The product shall be handled by skilled personnel in the following cases mains cable or plug damaged Exposure of the product to rain or humidity Some liquid entered inside the unit An object fell on the unit The unit fell down and is damaged The product does not work correctly or shows a remarkable change of performance 21 A careful supervision is necessary if the product is used in the presence of children or inexpert adults 2 Declaration of conformity This device conforms to the requirements of the EMC directive 89 336 EEC amended by 92 31 EEC and the requirements of the Low Voltage Directive 73 23 EEC
14. ny time and without notice XTE electronic Via Tragni 6 42043 Gattatico RE ITALY Tel 39 0522 900166 Fax 39 0522 678548 XTE EN_LAS180 Rev 3 0 10 10
15. z to remove low frequencies and interferences phase shift is activated Switch position to OFF the highpass filter low cut filter 400Haz is deactivated 4 OPERATION DISPLAY POWER ON The green LED display n 5 lights when the receiver is switched on and ready for use 5 VOLUME CONTROL WITH POWER ON OFF POSITION With this control the volume of the headset can be adjusted also by turning the VOLUME control the receiver is switched on and off ON OFF position The LAS180E induction loop receiver has a measuring system with an optical LED indicator of the field strength the indication range is between green LED display 50 mA m RMS yellow LED display 100 mA m RMS red LED display 400 mA m RMS Besides this in the upper area of the receiver there is a connector panel to connect a headset with volume control and CUT filter 400Hz 15 Technical Specifications Model LAS180E Operating time 100 hours Battery 2 x 1 5 V type AA or rechargeable batteries Headset 200 Q 3 5 mm mini jack plug Display measurement Led GREEN 50mW YELLOW 100Mw RED 400Mw M RMS Dimensions WxHxD 67 x 90 x 25 mm Material Plastic Colour black Weight 100 g without batteries Frequency response without CUT filter 85 Hz to 6kHz 0 5dB Frequency response with CUT filter 400 Hz to 6kHz 3dB Headset output 100 mW 200 Ohm THD lt 0 5 1 kHz XTE Electronic reserve the right to make changes to the drawings and specifications at a
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