User Manual PS 430 [ASL]
Contents
1. warranty If the unit is faulty it should be sent in it s 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 PAGE 3 User Manual PS 430 Issue 2011 ASL Intercom BV 5 0 FRONT PANEL CONTROLS amp CONNECTOR PS 430 Speaker Station 7777777777777777 777777777777777 o 777777777777777 NNN os va mm ma ma 9 11 1 LISTEN LEVEL control knobs These knobs preset the listen level for each channel separately 2 TALK buttons These push buttons allow talking to each channel separately or to some channels simultaneously When a TALK button is switched on its large green LED is lit Momentary switching When a TALK button is pushed and held the microphone signal is sent to the referring intercom channel until the button is released L atched switching When a TALK button is pushed shortly it is electronically latched and the microphone signal is sent to the referring intercom channel When pushed again the TALK button switches off Mic Mute when latched on After on an intercom channel a so called Mic Mute signal has been received from a PRO Series master station or power supply the connection between microphone and that intercom channel is interrupted By pushing the TALK button that connection is restored again 3 CALL buttons These2. 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 there should be an overall shield and each pair should consist of two conductors minimum 2x 0 15 mm2 with separate 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 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 connecior 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 co
3. ANALOG INTERCOM PS 430 FOUR CHANNEL SPEAKER STATION USER MANUAL Issue 2011 ASL Intercom BV DESIGNED AND MANUFACTURED BY ASL INTERCOM BV ZONNEBAAN 42 3542 EG UTRECHT THE NETHERLANDS PHONE 31 0 30 2411901 FAX 31 0 30 2667373 E MAIL info asl inter com WEB www asl inter com CONTENT OF THIS USER MANUAL 1 0 GENERAL DESCRIPTION 2 0 UNPACKING vr 3 0 INSTALL MON a a a eE 4 0 RAT 5 0 FRONT PANEL CONTROLS 8 CONNECTOR 6 0 SIDE PANEL CONNEC TORS una 7 0 INTERNAL CONTROLS sea 8 0 TECHNICAL SPECIFICATIONS PS 430 9 0 PARTY LINE TECHNICAL CONCEPT WO 2 e 11 0 BLOCK DIAGRAM PS 430 12 0 EARTHIN T NE sacarosa 13 0 SYSTEM CONFIGURATION PAGE 2 User Manual PS 430 Issue 2011 ASL Intercom BV 1 0 GENERAL DESCRIPTION The PS 430 is a four channel speaker station designed for use in both portable and fixed intercom systems It incorporates a loudspeaker a gooseneck microphone and a headset connector The unit provides full duplex communications within an ASL intercom system The PS 430 RM model has a small built in electret microphone Each channel has a Volume listen level control a Talk and Call b
4. are labeled GOOSE for the gooseneck microphone and HEADS for the headset microphone 8 0 TECHNICAL SPECIFICATIONS PS 430 System dynamic range 80 dB call send signal 2 8 mA call signal threshold receive 2 4 V DC supply voltage 30 V DC 12 32 V DC power interrupt time mic mute 0 1 sec Intercom Line Impedance 350 0 1kHz 2 2 kO DC audio level nom 18 dBu max 4 dBu Mic Pre amps gooseneck mic noise cancelling electret headset mic impedance 200 0 gain 40 60 dB adjustable internally presence filter 6 dB at 5 kHz frequency response 200 Hz 13 kHz 3 dB power to electret mic 9 V DC Side Tone Rejection 0 30dB adjustable Buzzer max SPL 85 dBA Speaker Driver Amp speaker impedance 25 Q max output power 2 9 W rms Headphones Driver Amps max output level monaural 14 Vrms 200 0 binaural 2x 10 6 V rms O 400 O max Output power monaural 1 W rms O 200 Q binaural 2x 0 28 W rms 400 0 Power Consumption PS 430 current at 30 V DC 70 mA quiescent 105 mA signaling 230 mA at max output signaling Dimensions amp Weight PS 430 width 283mm height 88 mm depth 42 48 mm sloping weight 1550 grams 0 dBu defined as 775 mV into open circuit ASL reserves the right to alter specifications without prior notice 9 0 PARTY LINE TECHNICAL CONCEPT User stations in an ASL intercom system are connected via one or several party lines A party line offers
5. crophone This a noise canceling microphone A limiter prevents the mic pre amp from clipping when speaking close in the microphone The gooseneck mic is automatically disabled when a headset is connected to the PS 430 11 LOUDSPEAKER This is a high guality loudspeaker driven by a 2 9 Watt amplifier The speaker is automatically disabled when a headset is connected to the PS 430 For linking the XLR 5 sockets to XLR 3 intercom line connectors each PS 430 comes with two Y cords having an XLR 5 connector at one end and two XLR 3 connectors at the other end On the Y cords the XLR 3 with the white ring corresponds with channel A or C Pin assignment XLR 5 connector 12 1 O V ground shield A B 2 30 V power wire channel A 3 audio wire channel A 4 30 V audio wire channel B 5 audio wire channel B Pin assignment XLR 5 connector 13 1 O V ground shield C D 2 30 V power wire channel C 3 audio wire channel C 4 430 V audio wire channel D 5 audio wire channel D PAGE 5 User Manual PS 430 Issue 2011 OASL Intercom BV 7 0 INTERNAL CONTROLS MIC GAIN trimmers Inside the unit there are two trimmers to adjust the mic gain of the gooseneck microphone and the headset microphone separately These internal controls are located on a PC board They can be reached as follows O remove the screws of the bottom plate O slide the plate to one side and take it out O take away the plastic isolation plate The trimmers
6. crophone is activated 2 0 UNPACKING The shipping carton contains the parts listed below o The PS 430 o Two Y cords XLR 5 gt 2x XLR 3 o This user manual If any are missing contact your dealer ASL has taken great care to ensure this product reaches you in flawless condition 3 0 INSTALLATION This PS 430 may form part of an existing or new intercom system To connect the PS 430 to the system use professional flexible microphone cable with 2 wires and 1 shield only These cables may be connected to the LINE connector sockets on the PS 480 side panel using the Y cords 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 guarantee section of this manual The PS 430 is fully protected against wiring mistakes reverse power or short circuit in the interconnect cables A special kit is available for mounting the PS 480 in a 19 rack taking 2U of rack space 4 0 WARRANTY This unit is warranted by ASL Intercom to the Original end user purchaser against defects in work manship and materials in its manufacture for a period of one year from date of shipment to the end user Faults arising from misuse unauthorized modifications or accidents are not covered by this
7. just the speaker listen level to a minimum by turning the side tone trimmers counter clockwise first trimmer 5 and then trimmer 6 repeat this a few times o connect a headset to the PS 430 the speaker and gooseneck are now automatically disabled and speak into the headset microphone o check whether the level of your voice in the headset can s is sufficient If not push up this level a bit by turning side tone trimmer 5 clockwise PAGE 4 User Manual PS 430 Issue 2011 ASL Intercom BV The trimmer operating area is between fully clockwise and minimum level Adjusting the side tones does not affect the level of your voice as it is heard by other stations 7 SPEAKER ATTENUATOR trimmer This trimmer adjusts the extent to which the loudspeaker is automatically dimmed when the gooseneck microphone is switched on It prevents unit feedback if side tone rejection is not sufficient It also minimizes system feedback or a hollow sound when the gooseneck microphones of other speaker stations on one or several of the connected party lines are switched on as well Adjustment procedure o make sure that there is no headset connected o switch off all TALK buttons of the PS 480 o inject an audio signal on one of the intercom channels via the aux input of a Pro Series master station or separate power supply o turn up the listen volume of the PS 430 channel and master volume o activate the gooseneck microphone p
8. ltipair cable and or metal cable trunk EARTHING CONCEPT ASL INTERCOM PAGE 8 User Manual PS 430 Issue 2011 ASL Intercom BV 13 0 SYSTEM CONFIGURATION PEP ODI aL A FIA AUX BS 286 BS 15 BS 286 PS 29 PS 19A PS 130 PS 230 PS 430 BS 286 4 ta MA PS 430 me _ i C amp a Va Le PS l 66530 PS 130 PGM SINGLE CHANNEL BELTPACK DUAL CHANNEL POWER SUPPLY DUAL CHANNEL BELTPACK O SINGLE CHANNEL BELTPACK WITH PGFM INPUT SINGLE CHANNEL SPEAKER STATION FOUR CHANNEL SPEAKER STATION 4 CHANNEL SYSTEM CONFIGURATION PAGE 9 User Manual PS 430 Issue 2011 ASL Intercom BV
9. nected 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 intercom network with a list of all user stations and their positions and we are happy to advise you on cabling lay out User Manual PS 430 Issue 2011 ASL Intercom BV 11 0 BLOCK DIAGRAM PS 430 SPEAKER AMP AUTOMATICALLY SWITCHED OFF WHEN HEADSET IS PLUGGED IN XLR pin 2A XLR pin 3 A BUFFERA LISTEN VOLUME A SIDETONE ADJUSTMENT ELECTRONIC TALK SWITCH TALK LINE DRIVER BUFFER A au TALK LINE DRIVER BUFFER BJ GOOSENECK MIC GAIN TALKILINE DRIVER BUFFER Co D k ALK LINE DRIVER BUFFER D o E GOOSENECK AUTOMATICALLY SWITCHED OFF WHEN HEADSET 15 PLUGGED IN LINE A COMPARATOR A CURRENT SOURCE AUDIO 4 FILTER A LINES COMPARATOR B CURRENT SOURCE B AUDIO i FILTER 5 LINE C COMPARATOR C CURRENT SOURCE AUDIO FILTER C LI NE D CALL SWITCHA CURRENT SOURCE ua zan AUDIO ah MA BUZZER VOLUME GENERATOR i UzzE BLOCK DIAGRAM PS 430 U ref 2V4 s R Date 14 6 2011 Sheet of 12 0 EARTHING CONCEPT POWER SUPPLY Z1 Z2 Line Impedances Mains Earth Wallbox LES PN k oka ib ONLY ONE Individual intercom line shield EARTHING POINT not to be connected with overall shielding LA EN HIH o Fo S Overall shield of mu
10. nnection 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 cables 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 con
11. push buttons activate the call system for each channel separately By a momentary push a call signal is sent to all stations connected to the referring intercom channel and all Call LED s start flashing Pushing and holding the CALL button for 2 seconds activates the call buzzer provided there is no buzzer mute signal on the referring channel After the CALL button is released the LED s continue to flash for a further 2 seconds 2 3 4 4 MASTER VOLUME knob This knob functions as the master volume control of the listen levels of the 4 intercom channels see also 1 for both the speaker and the headset 5 SIDE TONE LEVEL trimmers These trimmers one for each channel are for minimizing the speaker feeding back into the gooseneck microphone unit feedback They also determine the level of your own voice as you hear it in the speaker or headset 6 SIDE TONE HI trimmers These trimmers have the same functions as trimmers 5 but solely for the high frequencies Adjustment procedure for each channel separately o set trimmers in start position fully clockwise switch off the microphones of all connected speaker stations o make sure that there is no automatic speaker attenuation turn trimmer 7 fully clockwise o push the TALK button of the channel of which one wants to adjust the side tone o Slowly turn up the listen volume of the PS 430 channel and master volume o speak into the gooseneck microphone o ad
12. 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 of 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 PAGE 6 User Manual PS 430 Issue 2011 ASL Intercom BV 10 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 pin 3 DC power is on pin 2 and pin 1 is connected to the shield of the cable which functions as
13. ush the TALK button of the selected channel o adjust the desired degree of speaker attenuation turning the trimmer counter clockwise increases the attenuation 8 BUZZER VOLUME trimmer This trimmer adjusts the volume of the buzzer which is located behind the front panel 6 0 SIDE PANEL CONNECTORS 12 LINE connector for channel A amp B 13 LINE connector for channel C amp D These two XLR 5 connectors are for connecting the PS 480 to the party lines of the intercom system One connector is for channels A and B one connector for channel C and D The buzzer is activated when the CALL button of the PS 430 or a CALL button of any other station on the party lines to which the PS 430 is connected is pushed for longer than 2 seconds provided there is no Buzzer Mute Signal on these party lines coming from a Pro Series master station or separate power supply 9 HEADSET connector This is an XLR 4 connector for the connection of a local headset when private conversation is desired The headset must have a can impedance of minimum 200 ohms When the headset has two cans in parallel each can must have an impedance of minimum 400 ohms The headset microphone may be of the dynamic or electret type Pin assignments headset connector Pin 1 Shield Mic GND Pin 2 mic Pin 3 phones Pin 4 phones When connecting a headset loudspeaker and gooseneck microphone are disabled automatically 10 GOOSENECK mi
14. utton with LED indicators and a two stage side tone trimmer A master volume controls the total soeaker headset volume The unit is equipped with a limiter for the gooseneck microphone allowing the user to speak close into the microphone without giving rise to overload and distortion Loudspeaker dimming is automatic when the microphone is active Private conversation may be carried out with a headset or telephone handset connected to the unit When a headset is connected both gooseneck microphone and speaker are disabled automatically Special attention has been paid to the intelligibility of speech By applying low noise high speed op amps a speech presence filter and a specially developed high power bridged headphone amplifier communication is very comfortable even in environ ments with high background noise level There is a separate amplifier for the loudspeaker The unique ASL CALL system provides both a flashing red LED and a very distinctive and characteristic sound signal Smooth operation is guaranteed with the CALL button Only a slight touch makes the red LED flash whilst holding the button for two seconds will activate the CALL sound signal The volume of the sound signal buzzer can be adjusted at the front panel Fully electronic switching increases reliability and allows for o soft microphone ON switching latched or momentary o remote Mic Mute facility o automatic speaker attenuation when the gooseneck mi
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