ASL Intercom BS216


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ASL Intercom BS216

  1. 1. BS 216DUAL CHANNEL MASTER STATION USER MANUAL User Manual BS 216 / Issue 2010 ASL Intercom, Utrecht, The Netherlands.
  2. 2. CONTENT OF THIS USER MANUAL1.0 GENERAL DESCRIPTION ................................................... 32.0 UNPACKING.......................................................................... 33.0 MECHANICAL INSTALLATION ............................................. 34.0 MAINS POWER ..................................................................... 44.1 SAFETY EARTHING ............................................................. 44.2 POWERING UP ..................................................................... 45.0 FRONT PANEL CONTROLS & CONNECTOR...................... 56.0 REAR PANEL CONTROLS & CONNECTORS...................... 67.0 INTERNAL CONTROLS ........................................................ 68.0 CABLING ............................................................................... 79.0 PARTY LINE, TECHNICAL CONCEPT ................................. 810.0 WARRANTY ....................................................................... 811.0 TECHNICAL SPECIFICATIONS ........................................ 812.0 EARTHING CONCEPT....................................................... 913.0 BS 216 BLOCK DIAGRAM .............................................. 1014.0 POSSIBLE SYSTEM CONFIGURATION ......................... 11 2 User Manual BS 216 / Issue 2010 ASL Intercom, The Netherlands
  3. 3. 1.0 GENERAL DESCRIPTIONThe BS 216 is designed to be a master unit in For each channel separately, the intercoman ASL intercom system and can be used in line impedance circuitry is installed.portable as well as fixed applications. Itincorporates a dual channel intercom line An Aux input at the rear panel, allowspower supply with aux input, a dual channel injecting external audio signals of line or micheadset station and uses only 1U of 19” rack level into the intercom lines. When ‘mic level’space. is selected, +30V phantom power is available at the Aux input connector.This makes the BS 216 very versatile andideal for use in applications where standard Special attention has been paid to themicrophone cable is available and ease of intelligibility of speech. By applying lowsetup is of paramount importance. noise/high speed circuitry, a speech presence filter and a specially designed headphoneEach channel has a Volume (listen level) amplifier, communication is very comfortablecontrol, a Talk and a Call button with LED even in environments with high backgroundindicators and a side tone trimmer. noise levels.The intercom line power supply is fully The unique ASL CALL system provides bothprotected and can drive at least 10 beltpacks a flashing red LED and a very distinctive andoperating at full power. characteristic sound signal. Only a slightThe power supply is completely separated touch of the CALL button will make the LEDfrom all other functions and in case of power flash, whilst holding the button for twofailure the unit can accept line power from an seconds will activate the call sound signal.external ASL power supply.2.0 UNPACKINGThe shipping carton contains the parts listed ASL has taken great care to ensure thatbelow this product reaches you in flawless* The BS 216 condition.* Mains power cable After unpacking the unit please inspect for* Spare fuses any physical damage to the unit, and retain* User manual the shipping carton and relevant packingIf any are missing, contact your dealer. materials for use should the unit needWith the BS 216 will be a small packet of returning.spare fuses. Please keep them in a safe If any damage has occurred, please notifyplace. your dealer immediately so that a writtenThere is also one spare fuse included in the claim can be initiated.mains inlet. Please also refer to the warranty section of this manual.3.0 MECHANICAL INSTALLATIONA vertical rack space of 1U (1.75”, 44mm) is Forced cooling is not required.required for the BS 216. It is not necessary The power supply regulator is mounted on theto provide rear support by extra bracing or rear of the unit, and after a period of time it willshelving. Adequate ventilation must be feel hot to the touch. This is quite normal, andprovided by allowing sufficient space around should be no cause for alarm.the sides and rear of the unit to ensure freecirculation of air. | User Manual BS 216 / Issue 2010 ASL Intercom, The Netherlands 3
  4. 4. 4.0 MAINS POWERThe BS 216 may be connected to the mains As the colours of the wires in the mains leadpower outlet to which other audio equipment is may not correspond with the colouredconnected. The outlet should have a clean markings identifying the terminals in yourearth. Avoid using mains power outlets which plug, proceed as follows:also power dimmer controlled lightingequipment. - The wire which is coloured green-and- yellow must be connected to theThe used AC power source can be anything terminal in the plug which is markedfrom 100 - 240 V AC, 50/60 Hz. There is no with the letter “E”, or by the groundneed to adjust the unit to the used mains symbol, or is coloured green.voltage. - The wire which is coloured blue must be connected to the terminal which isThe power cord supplied with this unit carries marked with the letter “N” or colouredthe following information label: black. - The wire which is coloured brown must WARNING be connected to the terminal which is This appliance must be earthed marked with the letter “L” or coloured red. IMPORTANT The wires in this mains lead are colour Those units that are supplied to the North coded in accordance with the following American market have an integral moulded 3 code: pin connector which is provided to satisfy Green/yellow Earth / safety ground required local standards. blue Neutral brown Live4.1 SAFETY EARTHINGThe green-and-yellow wire of the mains cord other connected stations. This wire ismust always be connected to the electrical internally connected to all exposed metalinstallation safety earth or ground. It is surfaces, any rack framework into which thisessential for personal safety as well as unit might be mounted is assumed to befor proper operation of the BS 216 and the connected to the same grounding circuit.4.2 POWERING UPPowering up procedure:- Make sure that the red power switch on - Turn on the power with the red the left side of the front panel is OFF. button. The green power LED will go on, indicating the station is active.- Connect the power cord to the rear of the station. For further installation and operation see the concerning sections.- Plug the other end of the power cord into a PROPERLY GROUNDED mains outlet. 4 | User Manual BS 216 / Issue 2010 ASL Intercom, The Netherlands
  5. 5. 5.0 FRONT PANEL CONTROLS & CONNECTOR1 POWER ON/OFF switch Mains power push button for switching The operating area is between fully ON and OFF the internal power supply. clockwise and minimum level. Adjusting the side tone does not affect the level of2 POWER LED your voice as it is heard by other This LED illuminates if line power is stations. supplied by the internal power supply. 6 TALK A & B buttons3A BUZZER VOLUME trimmer These buttons allow you to talk to each This trimmer adjusts the volume of the channel separately or simultaneously. buzzer. The large green LED indicates if the talk function is activated.3B BUZZER This buzzer indicates an incoming or 7 CALL A & B buttons outgoing call. It is activated by pressing These push buttons activate the CALL a CALL button of the BS 216 or a CALL system. A momentary push will send a button on any other station on channel CALL signal to all stations connected to A or B for longer than two seconds. that intercom channel and the CALL You can adjust its volume with the LEDS will start flashing. buzzer volume control. Press and hold the buttons for 2 seconds will activate the call buzzer.4 VOLUME A & B control knobs After the CALL button is released the These knobs adjust the listen level for LEDS will continue to flash for a further 2 the headset. Each channel can be seconds. adjusted separately. 8 AUX VOLUME controls5 SIDE TONE trimmers These knobs adjust the level of the Aux These trimmers adjust the level of your input signal to each of the two intercom own voice as you hear it in your lines. headset. Adjustment procedure: 9 HEADSET connector - set the trimmer in start position: fully A XLR-4 type connector for the clockwise. connection of the local headset. This - switch off the microphone of all must have a can impedance of 200 connected stations. ohms or greater. The mic may be of the - switch on the microphone of the dynamic or electret type. required channel. Pin assignments: - turn up the volume of the required 1. shield mic. (GND) channel. 2. mic. + - speak into the headset microphone. 3. phones + adjust the listen level by turning the 4. phones – (GND) side tone trimmer. | User Manual BS 216 / Issue 2010 ASL Intercom, The Netherlands 5
  6. 6. 6.0 REAR PANEL CONTROLS & CONNECTORS10 MAINS Inlet 13 INPUT LEVEL Switch IEC Mains connector. For correct When mic level is selected, a +30V DC wiring and operation refer to section phantom power is supplied to pins 2 4.0. and 3. The mic gain can be adjusted with the mic gain trimmer.(see #14)11 FUSE Holder The fuse protects the BS 216 against 14 MIC GAIN Trimmer severe internal damage, in case of When the input level select switch is malfunction in the power section. To switched to mic level the mic gain can remove the fuse the mains cord must be adjusted with the mic gain trimmer. be removed. 15 A & B LINE connectors It is most important to place the These XLR-3 type connectors are for correct fuse in the holder: connecting the remote-stations, via mains voltage fuse standard microphone cable. 100 – 240 VAC T 1250 mA There are two connectors for channel A and two connectors for channel B. Warning: before connecting to mains check of the fuse is correct Pin assignments: 1. 0V / ground shield Spare fuses will be found in the small 2. +30V power wire packet supplied with the unit. 3. audio wire12 AUX INPUT connector This XLR-3 type aux input is electronically balanced and accepts audio levels between –18dBu to +22dBu on line level, and –38dBu to +2dBu on mic level. Pin assignments : 1. 0V / ground 2. signal + 3. signal -7.0 INTERNAL CONTROLS MIC GAIN The mic gain can be adjusted internally by a trimmer located on the pcb near to the headset connectors. 6 | User Manual BS 216 / Issue 2010 ASL Intercom, The Netherlands
  7. 7. 8.0 CABLINGFor the BASIC Series Intercom system the Since the audio signal is transferred in aninterconnecting cables are of the shielded two- unbalanced * way, certain rules have to beconductor microphone cable type and the obeyed when installing the cables of an intercomintercom line connectors are of the XLR-3 type. network. This is to avoid earth loops and toAudio and Call signals are on XLR pin 3, DC minimize power loss and the possible effect ofpower is on XLR pin 2. XLR pin 1 is connected to electromagnetic fields.the shield of the cable which functions as thecommon return for audio and power. * See Party Line, Technical ConceptThese rules are:• Use high quality (multipair) cable. • Keep cables parallel as much as possible. For interconnecting user stations, power When two (two channel) units in a network are supplies and accessories in an ASL Intercom connected by more than one cable, make sure network, use high quality shielded that these cables are parallel to each other two-conductor (minimum 2x 0.30 mm2) over the whole distance between those units. microphone cable only. In case of a two channel When using multipair cable, parallelism is intercom network, use high quality ensured in the best possible way. microphone multipair cable only, each pair consisting of two conductors (minimum 2x • Avoid closed loops. 0.15 mm2) with separate shield. Multipair Always avoid that cables are making a loop. cable should also have an overall shield. So-called ring intercom should not physically be cabled as a ring. All cable routes should• Use flexible cables. have a star configuration, with the central Use flexible single and multipair microphone earthing point (usually close to the power cable instead of cable with solid cores, supply position) as the centre of the star. especially when the cable is subjected to bending during operation or installation. • Keep cables away from electromagnetic sources.• Separate cable screen to XLR pin 1. Keep intercom cables away from high energy The screen of each separate microphone cables, e.g. 115/230/400V mains power or cable and/or the screen of each single pair in dimmer controlled feeds for spotlights. a multipair cable, should be connected to pin Intercom cables should cross high energy 1 of each XLR-3 connector. Do not connect cables at an angle of 90° only. this cable screen to the metal housing of the Intercom cables should never be in the same connector or to metal wall boxes (outlets). trunking as energy cables. See page 9 for Earthing Concept. • Place power supply in a central position.• Cable trunks, connection boxes and In order to avoid unacceptable power losses, overall multipair cable screen to clean place the power supply as close as possible to earth. where most power consumption occurs or, in Metal cable trunks, metal connection boxes other words, most user stations are placed. and overall multipair cable screen should be interconnected and, at one point (the central • Connect ASL power supply to a clean earthing point) in the intercom network only, mains outlet. be connected to a clean earth or a safety The ASL power supply may be connected to earth. See page 9 for Earthing Concept. the mains power outlet to which other audio equipment is connected. Avoid using mains• Keep metal connection boxes and cable outlets which also power dimmer controlled housings isolated from other metal parts. lighting systems. Metal housings for intercom cables and connectors should be mounted in such a way In case of more complex installations, dont that they are isolated from other metal cable hesitate to contact us. Please send us a block and connector housings and from any other diagram of the planned network with a list of metal construction parts. all user stations and their positions, and we are happy to advise you on cabling lay out. | User Manual BS 216 / Issue 2010 ASL Intercom, The Netherlands 7
  8. 8. 9.0 PARTY LINE, TECHNICAL CONCEPTASLs BASIC Series offers a complete two way developed which can be further amplified and(full duplex) communications system. sent to the headphones.Users of the system are connected via a party This principle has three advantages:line. Master stations (with built-in power - the use of a single audio line allows severalsupply), beltpacks and power supplies are stations to talk and listen simultaneously.interconnected via standard microphone cable. - due to the high bridging impedance offeredOne wire is used as an audio line, one as a by each station, the number of stations onpower line and the screen of the cable line has no influence on the level of thefunctions as earth/return. communications signal. - power and audio to the intercom stationsCurrent drive is used for signal transfer. Each use the same cable.station utilizes a current amplifier to amplify themicrophone signal and place it on the common The Call signal is also sent as a current on theaudio line where, due to the constant line audio line. It develops a DC potential over theimpedance (situated in the power supply line impedance which will be sensed by eachbetween XLR pin 3 and 1), a signal voltage is station and interpreted as a Call signal.10.0 WARRANTYThis unit is warranted by ASL Intercom to the modifications or accidents are not covered byoriginal end-user purchaser against defects in this warranty. If the unit is faulty it should beworkmanship and materials in its manufacture sent in its original packing, to the supplier orfor a period of one year from date of shipment your local ASL dealer, with shipping prepaid. Ato the end-user. note must be included stating the faults foundFaults arising from misuse, unauthorized and a copy of the original suppliers invoice.11.0 TECHNICAL SPECIFICATIONSSystem Headphone Driver AmpsDynamic range: 80 dB (1kHz, THD <1%) Max. output level: 10.6 Vrms (at 200 ohms)Call signal (send): +2.8 mA Max. output power: 0.5 Wrms (at 200 ohms)Call signal threshold (receive): +2.4 V DCSupply voltage: +30 V DC (12 V to 32 V) Side Tone Rejection: 0 - 30 dB adjustableIntercom lineImpedance: 350 ohms (1 kHz), 2.2 kOhms (DC) BuzzerAudio level: nom. -18 dBu, max. +4 dBu Max. SPL: 100 dBASwitch Mode Power Supply Aux InputsMains voltage range: 100 - 240 V AC, 50/60 Hz Input Impedance: 30 kOhms (line level)Output voltage: +30 V DC (+/- 5%) 4.6 kOhms (mic level)Max output power: 45 W Nominal Input Level: -18 to +6 dBu (line level) -38 to -14 dBu (mic level)Mic Preamps Max. Input Level: +22 dBu (line level)Headset mic impedance: 200 ohms +2 dBu (mic level)Gain: 40 - 60 dB (adjustable internally)Presence filter: +6dB @ 5 kHz Phantom Power: +30 V DC (mic level selected)Frequency response: 200 Hz - 15 kHz (-3 dB)Power to electret mic: +9 V DC 0 dBu defined as 775 mV rms into open circuit ASL reserves the right to change specifications without prior notice. 8 User Manual BS 216 / Issue 2010 ASL Intercom, The Netherlands
  9. 9. 12.0 EARTHING CONCEPT | User Manual BS 216 / Issue 2010 ASL Intercom, The Netherlands 9
  10. 10. 13.0 BS 216 BLOCK DIAGRAM 10
  11. 11. 14.0 POSSIBLE SYSTEM CONFIGURATION | User Manual BS 216 / Issue 2010 ASL Intercom, The Netherlands 11
  12. 12. DESIGNED & MANUFACTURED BY: ASL Intercom B.V. Zonnebaan 42 3542 EG Utrecht The Netherlands Tel: +31 (0)30 2411901 Fax: +31 (0)30 2667373 Email: Web: www.asl-inter.com12