User Manual BS 15
Contents
1. A BASIC SERIES USER MANUAL FOR THE BS 15 SINGLE CHANNEL BELTPACK basic series BS 15 beltpack CONTENTS 1 0 GENERAL DESCRIPTION 20 UNPACKING 3 0 INSTALLATION 4 0 FRONT PANEL CONTROLS 5 0 REAR PANEL CONNECTORS 6 0 INTERNAL CONTROLS 7 0 CABLING Se 8 0 PARTY LINE TECHNICAL CONCEPT 90 10 0 TECHNICAL SPECIFICATIONS User Manual BS 15 Issue 1 1994 ASL Intercom Utrecht Holland User Manual BS 15 Issue 1 1994 ASL Intercom Utrecht Holland 10 GENERAL DESCRIPTION The BS 15 is a portable single channel user station The unique ASL CALL system provides both a flashing red housed in a strong ABS case LED and a very distinctive and characteristic sound signal Smooth operation is guaranteed with the CALL button A On the front panel are a Volume listen level control a momentary push makes the red LED flash whilst holding Talk and a Call button with LED indicators a sidetone the button for two seconds will activate the CALL sound trimmer and a buzzer volume signal The volume of the sound signal buzzer can be adjusted at the front panel Special attention has been paid to the intelligibil2. XOQIIE AA INIOd ONIALAV JNO AINO 1121810 0 jou PISIUS ENPIAIPUI 29 ER sulen ege 2 50 p CZ LZ soouepeduy aul 22 12 5 a IX User Manual BS 15 Issue 1 1994 ASL Intercom Utrecht Holland 10 User Manual BS 15 Issue 1 1994 ASL Intercom Utrecht Holland 11
3. 11 QT TV Dit 01011 DANOS 113841 IT 1 013015 mum KT ER am 2 1 AZ WL NICO IW ANOHdOWIW User Manual BS 15 Issue 1 1994 ASL Intercom Utrecht Holland 5 15 5 15 5 210 BS 15 5 140 BS 15 1 CHANNEL BS 210 2 CHANNEL MASTER STATION AG 15 140 SOUND amp LIGHT BEACON 2 CHANNEL SYSTEM CONFIGURATION BS 15 BS 15 BS 180 BS 15 BS 15 1 CHANNEL BELTPACK IS 140 BS 180 1 CHANNEL POWERSUPPLY IN IS 140 SOUND amp LIGHT BEACON ASL 2 CHANNEL SYSTEM CONFIGURATION User Manual BS 15 Issue 1 1994 ASL Intercom Utrecht Holland 40 5 8 9218 SLHOIX 11 9092 ueeqeuuo7 ANNOS 1 ISV 1443 ONIHLYV gt JO PISIUS ea IX
4. connection boxes and overall multipair cable screen to clean earth Metal cable trunks metal connection boxes and overall multipair cable screen should be interconnected and at one point the Central earthing in the intercom network only be connected to a clean earth or a safety earth See page 10 for Earthing Concept Keep metal connection boxes and cable housings isolated from other metal parts Metal housings for intercom cables and connectors should be mounted in such a way that they are isolated from other metal cable and connector housings and from any other metal construction parts See Party Line Technical Concept Keep cables parallel as much as possible When two two 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 multipair cable parallelism is ensured in the best possible way Avoid closed loops Always avoid that cables are making a loop So called ring intercom should not physically be cabled as a ring All cable routes should have a star configuration with the central earthing point usually close to the power supply position as the centre of the star Keep cables away from electromagnetic sources Keep intercom cables away from high energy cables e g 110 220 380 mains power or dimmer controlled feeds for spotlights Intercom cables should cross high
5. 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 Since the audio signal is transferred in an unbalanced way certain rules have to be obeyed when installing the cables of an intercom network This is to avoid earth loops and to minimize power loss and the possible effect of electromagnetic fields These rules are Use high quality multipair cable For interconnecting user stations power supplies and accessories in an ASL Intercom network use high quality shielded two conductor minimum 2x 0 30 mm2 microphone cable only In case of a two channel intercom network use high quality microphone multipair cable only each pair consisting of two conductors minimum 2x 0 15 mm2 with separate shield Multipair cable should also have an overall shield Use flexible cables Use flexible single and multipair microphone cable instead of cable with solid cores especially when the cable is subjected to bending during operation or installation Separate cable screen to XLR pin 1 The screen of each separate microphone cable and or the screen of each single pair in a multipair cable should be connected to pin 1 of each XLR 3 connector Do not connect this cable screen to the metal housing of the connector or to metal wall boxes outlets See page 10 for Earthing Concept Cable trunks
6. energy cables at an angle of 90 only Intercom cables should never be in the same trunking as energy cables Place power supply a central position In order to avoid unacceptable power losses place the power supply as close as possible to where most power consumption occurs or in other words most user stations are placed Connect ASL power supply to a clean mains outlet The ASL power supply may be connected to the mains power outlet to which other audio equipment is connected Avoid using mains outlets which also power 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 15 Issue 1 1994 ASL Intercom Utrecht Holland 8 0 PARTY LINE TECHNICAL CONCEPT 10 0 TECHNICAL SPECIFICATIONS BS 15 ASL s BASIC Series offers a complete two way full POWER CONSUMPTION duplex communications system current at 30 V DC 18 mA quiescent Users of the system are connected a party line 35 mA signalling Master stations with built in power supply beltpacks and 80 mA at max output signalling power supplies are interconnected via standard microphone cable One wire is used as an audio line one MIC PREAMP as a power line and the screen of the cable functions as mic impedance 200 ohms ear
7. ARANTEE intercom line audio level nom 18 dBu max 4 dBu dynamic range 80 dB This unit is warranted by ASL Intercom to the original end call send signal 2 8 mA user purchaser against defects in workmanship and call receive signal threshold 2 4 V DC materials in it s manufacture for a period of one year from supply voltage 30 V DC 12 V to 32 V date of shipment to the end user Note 775 mV into open circuit Faults arising from misuse unauthorised modifications or accidents are not covered by this warranty If the unit is ASL reserves the right to alter specifications without further faulty it should be sent in it s original packing to the notice 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 THIS PRODUCT WAS DESIGNED DEVELOPED AND MANUFACTURED BY AMPCO SOUND LAB BV MAARSSEN UTRECHT HOLLAND User Manual BS 15 Issue 1 1994 ASL Intercom Utrecht Holland 7 EE AJA 7661 _ JaquiAN 2 2215 8 61 58 gt 3534 SLHON TIY HIOUINISSAYVYW DD 909 NVVEANNOZ GNNOS OOdWV 837718 10 437708 YOLVYINAD 41770 54011110 01 88 2 4 2 4 54317 345 1350 AN HO 417711
8. ity of speech By applying low noise high speed opamps a speech presence filter and a specially developed amplifier communication is very comfortable even in environments with a very high background noise level 2 0 UNPACKING The shipping carton contains the parts listed below ASL has taken great care to ensure this product reaches you in flawless condition BS 15 After unpacking the unit please inspect for any physical User manual damage to the unit and retain the shipping carton and relevant packing materials for use should the unit need If any are missing contact your dealer returning If any damage has occured please notify your dealer immediately so that a written claim can be initiated Please also refer to the guarantee section of this manual 3 0 INSTALLATION This BS 15 will form part of an existing or new intercom system and connection to it is straightforward There are no separate power connections or batteries to install as the necessary DC voltages are derived from the intercom master station or power supply via the intercom connecti on cable To connect the BS 15 onto the intercom system use professional flexible microphone cable with 2 wires and 1 shield only Connect the system intercom cable into the LINE connector socket on the rear panel Finally connect the headset plug into the HEADSET connector also on the rear panel The BS 15 is fully protected against mis wiring reverse power or sho
9. nt panel The buzzer is activated if you press the CALL button of the BS 15 3 or a CALL button of any other station on the channel to which the BS 15 is connected longer than 2 seconds 4 User Manual BS 15 Issue 1 1994 ASL Intercom Utrecht Holland 5 0 REAR PANEL CONNECTORS 6 LINE connectors These XLR 3 connectors are for connecting the BS 15 to the intercom system Pin assignments 1 ground shield 2 30 V power wire 3 audio wire The female connector is for input The male connector is for extending the intercom line to other user stations 7 HEADSET connector An XLR 4 type connector for the connection of the local headset This must have a can impedance of 200 ohms or greater or each minimum 400 ohms when in parallel The mic may be of the dynamic or electret type Pin assignments 1 Shield mic GND 2 mic 3 phones 4 phones GND 6 0 INTERNAL CONTROLS MIC GAIN The mic gain can be adjusted internally by a trimmer Open the BS 15 by removing the four screws on the underside trimmer is located on the lower PCB board To increase mic gain turn clockwise To decrease mic gain turn counterclockwise User Manual BS 15 Issue 1 1994 ASL Intercom Utrecht Holland 7 0 CABLING For the BASIC Series Intercom system the interconnecting cables are of the shielded two conductor microphone cable type and the intercom line connectors are of the
10. rt circuit in the interconnecting cables User Manual BS 15 Issue 1 1994 ASL Intercom Utrecht Holland 4 0 FRONT PANEL CONTROLS 1 VOLUME control knob This knob adjusts the listen level for the headset basic series Esser 2 TALK button This push button activates the headset microphone the large green LED indicates if the microphone is switched on BS 15 beltpack 3 CALL button This push button activates the call system A momentary push will send a call signal to all stations connected to the intercom channel and the call LEDS will start flashing Press and hold the button for 2 seconds will activate the call buzzer After the CALL button is released the LEDS will continue to flash for further 2 seconds 1 2 3 4 SIDETONE trimmer This trimmer adjusts the level of your own voice as you hear it in your headset Adjustment procedure get trimmer in start position fully clockwise switch off the microphone of all connected speaker stations switch on the microphone of the BS 15 turn up volume speak into the headset microphone adjust the listen level by turning the sidetone trimmer The operating area is between fully clockwise and minimum level Adjusting the sidetone does not affect the level of your voice as it is heard by other stations 5 BUZZER VOLUME trimmer This trimmer adjusts the volume of the internal buzzer which is located behind the fro
11. th return gain 40 dB 70 dB adjustable internally presence filter 6 at 5 kHz Current drive is used for signal transfer Each station frequency response 200 Hz 13 kHz 3 dB utilises a Current amplifier to amplify the microphone signal V electret mic 9 V DC and place it on the common audio line where due to the constant line impedance situated in the power supply HEADPHONES DRIVER between XLR pin 3 and 1 a signal voltage is developed max load 200 ohms which can be further amplified and sent to the max output level 8 V rms 200 ohms headphones max output power 0 16 W rms each headset can This principle has three advantages INTERCOM LINE DRIVER the use of a single audio line allows several stations to max output current 3 rms talk and listen simultaneously output impedance gt 150 Kohms due to the high bridging impedance offered by each station the number of stations on line has no SIDETONE influence on the level of the communications signal rejection 0 30dB adjustable power and audio to the intercom stations use the same cable BUZZER max SPL 100 dBA The Call signal is also sent as a current on the audio line It develops a DC potential over the line impedance which DIMENSIONS AND WEIGHT will be sensed by each station and interpreted as a Call width 90 mm signal height 38 mm depth 124 mm weight 260 gramms GENERAL SYSTEM SPECIFICATIONS intercom line impedance 350 ohms 1 2 2 2 Kohms DC 90 GU
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