User Manual PS 19A
Contents
1. PRO SERIES USER MANUAL FOR THE PS 19AM SINGLE CHANNEL BELTPACK WITH PGM AUX INPUT OO E CONTENTS 1 0 GENERAL DESCRIPTION 2 0 UNPACKING 3 0 INSTALLATION 4 0 FRONT PANEL CONTROLS 5 0 REAR PANEL CONNECTORS 6 0 BOTTOM PANEL CONTROLS 7 0 CABLING 8 0 PARTY LINE TECHNICAL CONCEPT 9 0 GUARANTEE 10 0 TECHNICAL SPECIFICATIONS User Manual PS 19AM Issue 1 2000 ASL Intercom Utrecht Holland 1 0 GENERAL DESCRIPTION The PS 19AM is a portable single channel user station equiped with a volume controlled input for external audio program signals It is housed in a strong Aluminium case and it is provided with a steel beltclip On the front panel are Volume listen level controls for the PGM and the communications signals and a Talk and a Call button with LED indicators Special attention has been paid to the intelligibility of speech By applying low noise high speed opamps a speech presence filter and a specially developed high power bridged headphone amplifier communication is very comfortable even in environments with a very high background noise level 20 UNPACKING The unique ASL CALL system provides both a flashing LED and a very distinctive and characteristic sound signal Smooth operation is guaranteed with the CALL button A momentary push makes the red LED flash2. 355 22 909 Cy NVVd3JNNOZ A 8 ANNOS O2dWV INANI WWVY90Ud EE YOLVYINAD jin 31770 317708 417204 1WNIOAYIZZNA yarla OIQNY Le T NOM YOLVYSIALLIAW Ava aT UOLVAVAWOD 133105 LNIWIND WOLIMS TIVO 5011 1190 H TVWSON Il E AWN10A W9d IN3WISQ fV 11011415 33141141 144 1194 1 1 2 P P nl 10 131511 ___ 5831 345 1350 431104 394105131 Sd 310W2IW WsI 4 b Jamod f gud Zuid yy 59 12110413111 NIV92IW 3NOHd0321W User Manual PS 19 Issue 1 2000 ASL Intercom Utrecht Holland T3NNVHO V dO WALSAS 414 55 3NIT3NOHd3T3L 091 Sd 3NOHd VAI VI VW 09 Sd 1 ww P 820 Sd WOd Wel Sd 66 Sd 61 Sd 7 OEL Sd User Manual PS 19 Issue 1 2000 ASL Intercom Utrecht Holland jeeus re
3. 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 side panel A PGM input at the rear of the PS 19AM allows the connection of external audio signals which will only be heard at the local headset As an optional extra an XLR 6 headset connector can be fitted allowing the user to hear the intercom signal at the left headset can and the PGM signal at the right headset can Fully electronic switching increases reliability and allows for soft microphone ON switching latched or momentary remote Mic Mute facility The shipping carton contains the parts below The PS 19AM User manual If any are missing contact your dealer ASL has taken great care to ensure this product reaches you in flawless condition After unpacking the unit please inspect for any physical damage and retain the shipping carton and relevant packing materials for use should the unit need 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 PS 19AM will form a 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 supplies via the inte
4. PUT input impedance 30 Kohms balanced line level 4 6 Kohms balanced mic level nominal input level 18 dBu to 6 dBu line level 38 dBu to 14 dBu mic level 22 dBu line level 2 dBu mic level max input level MIC PREAMP mic impedance 200 ohms gain 40 dB 70 dB adjustable internally 6 dB at 5 kHz 200 Hz 13 kHz 3 dB presence filter frequency response V electret mic 9 V DC HEADPHONES DRIVER AMP max load 200 ohms max output level max output power 14 V rms 200 ohms 0 5 W rms each headset can INTERCOM LINE DRIVER max output current 3 mA rms output impedance gt 150 Kohms SIDETONE rejection 0 30dB adjustable BUZZER max SPL 106 dBA DIMENSIONS AND WEIGHT width 90 mm height 38 mm depth 124 mm weight 310g GENERAL SYSTEM SPECIFICATIONS intercom line impedance 350 ohms 1 2 2 2 Kohms DC intercom line audio level nom 18 dBu max 4 dBu dynamic range 80 dB call send signal 2 8 mA call receive signal threshold 2 4 V DC supply voltage 80 V DC 12 V to 32 V mic mute power interrupt time 0 1 sec Note 0 dBu 775 mV into open circuit ASL reserve the right to alter specifications without further notice User Manual PS 194A Issue 1 2000 ASL Intercom Utrecht Holland jo iesus F66l 6 lJeqopo PPa AT JequinwN 9215 H V6l Sd WVYOVIG X2014 SLHON TIY 1H23310
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6. gy cables Place power supply in 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 PS 194A Issue 1 2000 ASL Intercom Utrecht Holland 8 0 PARTY LINE TECHNICAL CONCEPT 10 0 TECHNICAL SPECIFICATIONS PS 19AM ASL s PRO Series offers a complete two way full duplex communications system Users of the system are connected via a party line Master stations with built in power supply beltpacks speaker stations and power supplies are interconnected via standard microphone 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 utilises 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 t
7. he power supply between XLR pin 3 and 1 a signal voltage is developed which can be further amplified and sent to headphones or loudspeakers This principle has three advantages the use of a single audio line allows several stations to talk and listen simultaneously due to the high bridging impedance offered by each station the number of stations on line has no influence on the level of the communications signal 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 9 0 GUARANTEE 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 Faults arising from misuse unauthorised modifications or accidents are not covered by this 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 THIS PRODUCT WAS DESIGNED DEVELOPED AND MANUFACTURED BY AMPCO SOUND LAB BV MAARSSEN UTRECHT HOLLAND POWER CONSUMPTION current at 30 V DC 25 mA quiescent 40 mA signalling 140 mA at max output signalling PGM AUX IN
8. ice as you hear it in your headset Adjustment procedure set trimmer in start position fully clockwise Switch off the microphone of all connected speaker stations switch TALK on of the PS 19AM turn up volume speak into the headset mic 5 gt SE adjust listen level by turning the sidetone trimmer tone SE The operating area is between fully clockwise and 4 C minimum level gain Adjusting the sidetone does not affect the level of your voice as it is heard by other stations 6 BUZZER VOLUME trimmer Eben iner om This trimmer adjusts the volume of the internal buzzer which is located behind the bottom panel The buzzer is activated if you press the CALL button of the PS 19AM or a CALL button of any other station on the channel to which the PS 19AM is connected for lon ger than 2 seconds and the buzzers are not muted on the master station or power supply 7 PGMLINE MIC LEVEL selection A small switch at the bottom of the PS19AM determines the selection between MIC and Line level for the PGM input User Manual PS 194A Issue 1 2000 ASL Intercom Utrecht Holland 5 For the PRO Series Intercom system the interconnecting cables are of the shielded two conductor microphone cable type and 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
9. rcom connection cable To connect the PS 19AM onto the intercom system use professional flexible microphone cable with 2 wires ans 1 shield only Connect the system intercom cable to the LINE connector socket on the rear panel Finally connect the listening headset plug into the HEADSET connector 4 0 FRONT PANEL CONTROLS The PS 19AM is fully protected against mis wiring reverse power or short circuit in the interconnect cables User Manual PS 19 Issue 1 2000 ASL Intercom Utrecht Holland 1 PGM VOLUME control knob This knob adjusts the level of the the PGM input signal 4 CALL button as it will be heard in your own headset 2 VOLUME control knob O This knob adjusts the intercom line listen level for the headset 3 TALK button 2 This push button activates the headset microphone the large green LED indicates if the microphone is switched on Latched switching When a TALK button is pressed quickly the 4 3 2 microphone will be switched on and is electronically latched When pressed again the microphone will be This push button activates the call system switched off A momentary push will send a CALL signal to all stations connected to the intercom channel and the call Momentary switching LEDS will start flashing When a TALK button is pressed and held the Press and hold the button for 2 seconds will activate microphone will be active
10. s and overall multipair cable screen should be interconnected and at one point the central earthing point in the intercom network only be connected to a clean earth or a safety earth See page 10 Earthing Concept Keep metal connection boxes and cable trunks 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 7 0 CABLING 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 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 center of the star Keep cables away from electromagnetic sources Keep intercom cables away from high energy cables e g 110 220 380V 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 trunking as ener
11. 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 multi 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 Earthing Concept Cable trunks connection boxes and overall multipair cable screen to clean earth Metal cable trunks metal connection boxe
12. until the button is released the call buzzer if not muted When the microphone is latched on it can be muted by After the CALL button is released the LEDS will a Mic Mute from a PRO Series master station or power continue to flash for further 2 seconds supply 5 0 REAR PANEL CONNECTORS 5 PGM connector This PGM input is electronically balanced and accepts audio levels between 18dBu and 22dBu when configured on line level and between 38dBu and 2dBu when configured on mic level 8 The selection mic or line level is determined by the place of two jumpers inside the PS 19AM see 7 0 Internal Controls The unit is factory set on line level Pin assignments 1 0V ground 2 signal Ki 3 signal 6 LINE connector 7 This XLR 3 connector is for connecting the PS 19AM to HEA the intercom system 5 6 7 DSE Pin assignments T 1 OV ground shield 2 30 V power wire 3 audio wire connector An XLR 4 type connector for the connection of the local headset This must have a can impedance of 200 ohms or greater The mic may be of the dynamic or electret type Pin assignments 1 Shield mic GND 2 mic 3 phones 4 phones 4 User Manual PS 19A Issue 1 2000 ASL Intercom Utrecht Holland 6 0 BOTTOM CONTROLS 4 MIC GAIN The mic gain can be adjusted internally by a trimmer located at the bottom C 1 5 SIDETONE trimmer This trimmer adjusts the level of your own vo
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