User Manual PS 260 [ASL]
Contents
1. impedance Mic Line impedance Block Diagram BS 286 C 2011 ASL Intercom BV PAGE 7 User Manual BS 286 February 2011 ASL Intercom BV 14 0 POSSIBLE SYSTEM CONFIGURATION AUX BS 286 BS 15 SINGLE CHANNEL BELTPACK ASL 05 200 DUAL CHANNEL POWER SUPPLY 2 CHANNEL SYSTEM CONFIGURATION PAGE 8 User Manual BS 286 February 2011 O ASL Intercom BV2. not required The power supply regulator is mounted on the rear of the unit after a period of time it will feel hot to the touch This is quite normal and should be no cause for alarm 5 0 MAINS POWER amp SAFETY EARTH Connecting to mains power The BS 286 may be connected to a mains power outlet which provides 100 240 V AC 50 60 Hz and at least 60 watts The outlet should have a clean earth Avoid using mains power outlets which also power dimmer controlled lighting equipment The wires in the mains lead are color coded green yellow Earth safety ground blue Neutral brown Live In case the wires in the mains lead do not correspond with the colored markings identifying the terminals in your mains plug proceed as follows e The wire which is colored green yellow must be connected to the terminal in the plug which is marked with the letter E or by the ground symbol or is colored green 6 0 GENERAL DESCRIPTION The BS 286 is a dual channel power supply and can be used in an ASL intercom system The unit is ideal for use in applications where standard microphone cable is available and ease of setup is of paramount importance The unit can drive at least 10 beltpacks operating at full power The dual channel power supply is fully protected against wiring mistakes reverse power short circuit or dangerous thermal condition e The wire which is colored blue must be connected to the terminal which is mark
3. ANALOG INTERCOM BS 286 DUAL CHANNEL POWER SUPPLY USER MANUAL February 2011 ASL Intercom BV DESIGNED amp MANUFACTURED BY ASL Intercom B V Zonnebaan 42 3542 EG Utrecht The Netherlands Tel 31 0 30 2411901 Fax 31 0 30 2667373 Email info asl inter com Web www asl inter com CONTENT OF THIS USER MANUAL 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 10 0 11 0 12 0 13 0 14 0 SARET INSTRUCTION ae a a mo OS eG 4 C nn a WARRANTY paatesiestapanneanderaiedaamanateaadanetasmenainsatanacsaneaanansatmemdssnmanieansndaaneeazesaics MECHANICAL INSTALLATION ie MAINS POWER amp SAFETY EARTH iii GENERAL DESCRIPTIONS EEE FRONT PANEL CONTROLS amp CONNECTOR UN REAR PANEL CONTROLS amp CONNECTORS cc cceeeeeeeeeeeeeeeeeeeeeeees TECHNICAL SPECIFICATIONS iii PARTY LINE TECHNICAL CONCEPT is ELIN EAR ING ONE TG BS 286 BLOCK DIAGRAM ruunrnnnvonnnvrvernnerenrnvevernnveennnnerenrnvreernnerennnnerennne POSSIBLE SYSTEM CONFIGURATION rrrunnnnnnnnnnnrnnnnnnnnrnnrnnnnrnnnnnnnnnnnnn PAGE 2 User Manual BS 286 February 2011 O ASL Intercom BV 1 0 10 SAFETY INSTRUCTIONS Please always follow these instructions to help ensure against injury to yourself and or damage to the system Read all safety and operating instructions before you operate the apparatus Retain all safety and operating instructions for future reference Heed all warnings on the apparatus and in the safety and operating instructions a
4. If you are unable to insert the plug fully into the outlet try reversing the plug If the plug still fails to fit contact an electrician to replace the obsolete outlet A grounding type plug has two blades and a third grounding prong The wide blade or the third prong are provided for your safety If the provided plug does not fit into your outlet consult an electrician to replace the obsolete outlet Route power supply cords so that they are not likely to be walked on or pinched by items placed upon or against them Pay particular attention to cords at plugs convenience receptacles and the point where they exit from the apparatus Do not overload wall outlets or extension cords as this can result in a risk of fire or electrical shock Unplug this apparatus during lightning storms or when unused for long periods of time Never insert objects of any kind into the apparatus through openings as the objects may touch Dangerous voltage points or short out parts This could cause fire or electrical shock Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as when the power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped User Manual BS 286 February 2011 O ASL Intercom BV 2 0 UNPACKING The shipping
5. THED INSIDE HIGH VOLTAGE DISCONNECT MAINS INPUT BEFORE REMOVING COVER 4 A amp B LINE connectors These XLR 3 type connectors are for connecting remote stations using standard microphone cable Next to the AUX input is an INPUT LEVEL switch for There are 2 connectors for channel A and 2 selecting either line level or mic level When mic connectors for channel B level is selected 30V DC phantom power is Pin assignments supplied to pin 2 and 3 of the AUX input connector Pin 1 OV ground shield Pin 2 30V DC power wire With the MIC GAIN trimmer one can adjust the input Pin 3 audio wire sensitivity when mic level is selected 5 AUX INPUT connector 6 FUSE Holder This XLR 3 input is electronically balanced and The fuse protects the BS 286 against severe internal accepts audio levels between 18 dBu to 22 dBu damage in case of malfunction in the power section on line level and 38 dBu to 2 dBu on mic level Before replacing a fuse the mains cord must be Pin assignments disconnected from the mains outlet Pin 1 OV ground Pin 2 signal 7 MAINS Inlet Pin 3 signal IEC Mains connector 9 0 TECHNICAL SPECIFICATIONS System Aux Input Dynamic range 80 dB 1kHz THD lt 1 Input Impedance Call signal send 2 8 mA 30 kOhms line level Call signal threshold receive 2 4 V DC 4 6 KOhms mic level Supply voltage 30 V DC 12 V to 32 V Nominal Input Level 18 to 6 dBu line level Intercom line 38 to 14
6. bles e g 115 230 400V mains power or dimmer controlled feeds for spotlights Intercom cables should cross high energy cables at an angle of 90 only Intercom cables should never be in the same trunks as energy cables Place power supply in a central position In case of a system powered by a separate power supply In order to diminish power losses place the power supply as close as possible to where most power consumption occurs in other words most user stations are placed ASL powered units to a clean mains outlet Master stations or power supplies should be connected to a mains outlet with a clean earth Other audio equipment may be connected to this mains outlet but avoid using an outlet which also powers dimmer controlled lighting systems In case of more complex installations don t hesitate to contact us Please send us a block diagram of the planned network with a list of all user stations and their positions and we are happy to advise you on cabling lay out User Manual BS 286 February 2011 ASL Intercom BV 12 0 EARTHING CONCEPT POWER SUPPLY Z1 Z2 Line Impedances Mains Earth Ca LE Wallbox E ova J s f r JE j ONLY ONE Individual intercom line shield EARTHING POINT not to be connected with overall shielding pA Overall shield of multipair cable and or metal cable trunk EARTHING CONCEPT ASL INTERCOM 13 0 BS 286 BLOCK DIAGRAM Switched Mode Power Supply
7. carton contains the parts listed below The BS 286 Mains power cable Spare fuses User manual If any are missing contact your dealer 3 0 WARRANTY This unit is warranted by ASL Intercom to the original end user purchaser against defects in workmanship and materials in it s manufacture for a period of one year from date of shipment to the end user ASL has taken great care to ensure that this product reaches you in flawless condition After unpacking the unit please inspect for any physical damage to the unit and retain the shipping carton and relevant packing materials for use should the unit need returning If any damage has occurred please notify your dealer immediately so that a written claim can be initiated Please also refer to the warranty section of this manual Faults arising from misuse unauthorized modifications or accidents are not covered by this warranty If the unit is faulty it should be sent in its original packing to the supplier or your local ASL dealer with shipping prepaid A note must be included stating the faults found and a copy of the original suppliers invoice 4 0 MECHANICAL INSTALLATION For the BS 286 a vertical rack space of 1U 1 75 44mm is required It is not necessary to provide rear support by extra bracing or shelving Adequate ventilation must be provided by allowing sufficient Space around the sides and rear of the unit to ensure free circulation of air Forced cooling is
8. dBu mic level Impedance 350 Q 1 KHz 2 2 kQ DC Max Input Level Audio level nom 18 dBu max 4 dBu 22 dBu line level 2 dBu mic level Switch Mode Power Supply Phantom Power 30 V DC when mic level is Mains voltage 100 240 V AG 50 60 Hz selected Output voltage 30 V DC 5 Max output power 45 W 0 dBu defined as 775 mV rms into open circuit Max power consumption BS 286 60 watts ASL reserves the right to change specifications without prior notice PAGE 5 User Manual BS 286 February 2011 ASL Intercom BV 10 0 PARTY LINE TECHNICAL CONCEPT User stations in an ASL intercom system are connected via one or several party lines A party line offers two way full duplex communication and consists of standard microphone multi pair cable One wire is used as an audio line one as a power line and the screen of the cable functions as earth return Current drive is used for signal transfer Each station utilizes a current amplifier to amplify the microphone signal and place it on the common audio line where due to the constant line impedance situated in the power supply between XLR pin 3 and 1 a signal voltage is developed which can be further amplified and sent to the headphones or loudspeakers This principle has three advantages e the use of a single audio line allows several Stations to talk and listen simultaneously e due to the high bridging impedance offered by each station the number o
9. ed with the letter N or colored black e The wire which is colored brown must be connected to the terminal which is marked with the letter L or colored red Safety Earth The green yellow wire of the mains lead must always be connected to the electrical installation safety earth or ground This is essential for personal safety as well as for proper operation of the BS 286 and the other connected stations The green yellow wire is in the BS 216 connected to all exposed metal surfaces Any rack framework into which this unit might be mounted is assumed to be connected to the same grounding circuit Should one of these conditions occur the unit shuts down Once the fault condition has been removed the BS 286 resets automatically and full power is restored An Aux input at the rear panel allows injecting external audio signals of line or mic level into the intercom lines When mic level is selected 30V phantom power is available at the Aux input connector PAGE 4 User Manual BS 286 February 2011 ASL Intercom BV 7 0 FRONT PANEL CONTROLS amp CONNECTOR a 2 MAINS POWER LED 1 POWER ON OFF switch This LED illuminates if the unit is switched on Mains power push button for switching ON and OFF the internal power supply 3 AUX VOLUME control knobs These knobs adjust the level of the AUX input to each of the two intercom lines 8 0 REAR PANEL CONTROLS amp CONNECTORS WARNING THIS UNIT MUST BE EAR
10. f stations on the party line has no influence on the level of the communications signal e power and audio to the intercom stations use the same cable The Call signal is also sent as a current on the audio line It develops a DC potential over the line impedance which will be sensed by each station and interpreted as a Call signal 11 0 CABLING The intercom lines the party lines are of the shielded two conductor microphone cable type The intercom line connectors are of the XLR 3 type Audio and Call signals are on XLR pin 3 DC power is on XLR pin 2 XLR pin 1 is connected to the shield of the cable which functions as the common return for audio and power The audio signal is transferred in an unbalanced way see Party Line Technical Concept To avoid earth loops hum the possible effect of electromagnetic fields and to minimize power loss certain rules have to be obeyed when installing the cabling of an intercom system Use high quality cable Use high quality microphone cable shielded two conductor cable minimum 2x 0 30 mm2 In case multi pair microphone cable is used it should be of high quality and each pair should consist of two conductors minimum 2x 0 15 mm2 with separate shield and an overall shield Use flexible cable Use flexible single and multi pair microphone cable instead of cable with solid cores especially when the cable is subjected to bending during operation or installation Cable screens
11. nd follow all installation and use instructions Follow all installation operating and use instructions Unplug the apparatus from the AC power outlet before cleaning Use only a damp cloth for cleaning the exterior of the apparatus Do not use accessories or attachments not recommended by the manufacturer as they may cause hazards and void the warranty Do not operate this apparatus in high humidity areas or expose it to water or moisture Do not place the apparatus on an unstable cart stand tripod bracket or table The apparatus may fall causing serious personal injury and damage to the apparatus Do not block or cover any openings in the apparatus These are provided for ventilation and protection from overheating Never place the apparatus near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat Do not place the apparatus in an enclosure such as a cabinet without proper ventilation Operate the apparatus using only the type of power source indicated on the marking label Unplug the apparatus power cord by gripping the power plug not the cord 11 12 13 14 15 16 Insert the plug properly Do not defeat the safety purpose of the polarized or grounding type plug An American polarized AC line plug has two blades with one wider than the other This plug will fit only one way into the power outlet This is a safety feature
12. to XLR pin 1 The screen of each separate microphone cable and or the screen of each single pair in a multi pair cable should be connected to pin 1 of each XLR 3 connector Do not connect these screens to the metal housing of ASL unitst or XLR 3 wall boxes See section Earthing Concept Connect metal cable trunks wall boxes and overall multi pair cable screens to clean earth Metal cable trunks metal wall boxes and overall multi pair cable screens should be interconnected and at the central earth point in the intercom network only be connected to a clean earth or a safety earth see section Earthing Concept Keep metal connection boxes and cable trunks or pipes isolated from other metal parts Metal trunks or pipes for intercom cables and metal connection boxes should be mounted in such a way that they are isolated from any other metal housing or construction part Keep cables parallel as much as possible When two multi channel units in a network are connected by more than one cable make sure that these cables are parallel to each other over the whole distance between those units When using multi pair cable parallelism is ensured in the best possible way Avoid closed loops Always avoid that intercom cables are making a closed loop So called ring intercom should not physically be cabled as a ring Keep cables away from electromagnetic sources Keep intercom cables away from high energy ca
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