ps 19 am single channel beltpack with pgm (aux) input user manual
Contents
1. ASL reserves the right to alter specifications without prior notice User Manual PS 19 AM Issue 2011 ASL Intercom BV 9 0 PART TECHNICAL CONCEPT User stations in an ASL intercom system are interconnected via one or several party lines A party line offers two way duplex communication and consists of standard microphone multi pair cable One wire is used for the audio signal and one wire for the DC power The screen of the microphone cable functions as earth return Current drive is used for signal transfer Each intercom station utilizes a current amplifier to amplify the microphone signal That signal is put on the common audio line Due to the constant line impedance a signal voltage is developed which can be further amplified and sent to headphones or loudspeakers The line impedance is situated in the power supply between XLR pin 3 and pin 1 This principle has the following advantages The use ofa single audio line allows several intercom stations to talk and listen simultaneously e Due to the high bridging impedance offered by each intercom station The number of stations on the party line has no influence on the level of the communications audio signal e Power and audio to the intercom stations use the same cable Also the Call signal is sent as a current on the audio wire It develops a DC potential over the line impedance which is sensed by each intercom station and interpreted as a2. 8 LINE connector This XLR 3 connector is for connecting the PS 19 AM to the intercom party line Pin assignment Pin 1 ground shield Pin 2 30 DC power wire Pin 3 audio wire Latched switching When the TALK button is pushed shortly it is electronically latched and the microphone signal is sent to the intercom channel When pushed again the TALK button switches Off Mic Mute when latched On After a so called Mic Mute signal has been received from a Pro Series master station or power supply the connection between microphone and intercom channel is interrupted By pushing the TALK button the connection is restored and one can talk to the intercom channel again 4 CALL button With a momentary push of the CALL button a Call signal is sent to all stations connected to the intercom party line The Call LED s of this beltpack and of all stations on the party line start flashing By pushing the Call button for 2 seconds the Call Buzzers are activated provided the buzzers are not muted by a Buzzer Mute signal received from a Pro Series master station or power supply After the CALL button is released the LED s continue to flash for a further 2 seconds 5 Call LED red 6 Talk LED green P Duo o 8 9 HEADSET connector This XLR 4 connector is for connecting a headset to the beltpack The impedance of the headset can must be minimum 200 ohms in case of 2 cans in parallel the imp
3. ANALUG INTERCOM PS 19 AM SINGLE CHANNEL BELTPACK WITH PGM AUX INPUT 66 TALK Ld CALL 7 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 10 GENERAL DESCRIPTION 20 UNPACKING u u 30 bog Gl u u u A0 WARRANIY u Y 5 0 FRONT PANEL CONTROLS 6 0 REAR PANEL CONNECTORS 7 0 BOTTOM PANEL CONTROLS 8 0 TECHNICAL SPECIFICATIONS PS 19 9 0 PART LINE TECHNICAL eere 100 CABLING 11 0 BLOCK DIAGRAM PS 19 12 0 SYSTEM CONFIGURATION nnne nnns 15 0 EAHIHING CONCEPT uu ua PAGE 1 User Manual PS 19 Issue 2011 ASL Intercom BV 1 0 GENERAL DESCRIPTION The PS 19 AM is a portable single channel intercom station equipped with a volume controlled input for externa
4. Call signal 10 0 CABLING The ASL analog intercom stations power supplies interfaces and accessories are interconnected by cables of the shielded two conductor microphone cable type The intercom party 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 cable shield which functions as the common return for audio and power Since the audio signal is transferred in an unbalanced way see Party Line Technical Concept certain rules have to be obeyed when installing the cabling of an intercom network This is to avoid earth loops and to minimize power loss and the possible effect of electromagnetic fields Use high quality cable Use high quality microphone cable shielded two conductor cable minimum 2x 0 30 mm2 In case of a multi channel intercom network use high quality microphone multi pair cable only each pair consisting of two conductors minimum 2x 0 15 mm2 with separate shield Multi pair cable should have an overall shield as well 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 connector Do not connect these screens t
5. K button Turn up the listen volume Speak into the headset microphone Adjust the listen level by turning the side tone trimmer The trimmer operating area is between fully clockwise and minimum level Adjusting the side tone does not affect the level of your voice as heard by the other stations on the party line 11 MIC GAIN trimmer This trimmer is to adjust the headset mic gain between 35 dB 60 dB 12 BUZZER VOLUME trimmer This trimmer adjusts the volume of the internal buzzer The buzzer is activated when the CALL button on this beltpack or on any other intercom station connected to the party line is pushed longer than 2 seconds provided the buzzers are not muted by a Buzzer Mute signal received from a Pro Series master station or power supply 13 PGM Line Mic selector To adjust the PGM input for either Mic or Line level of the incoming PGM audio signal Side Tone Rejection 0 30 dB adjustable Buzzer Max SPL 85 dBA PGM input Input impedance 30 kQ balanced line level 4 6 kQ balanced mic level Nominal input level 18 dBu to 6 dBu line level 38 dBu to 14 dBu mic level Max input level 22 dBU line level 2 dBu mic level PS 19 AM Power Consumption Current at 30V DC 30 mA quiescent 45 mA signaling 170 mA at max output signaling PS 19 AM Dimensions amp Weight Width 90 mm Height 48 mm incl clip Depth 124 mm Weight 400 grams 0 dB is defined as 775 mV into open circuit
6. bles Place the 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 Connect ASL power supplies to a clean 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 power dimmer controlled lighting systems 110 BLOCK DIAGRAM PS 19 XLRpin2 pin 3 ELECTRONIC Upowd LINE TALK SWITCH ISM MIC MUTE PS MIC MUTE MIC PREAMP O BUFFER MICROPHONE j HEADSET SPEAKERS LISTEN VOLUME E 1 MIC GAIN 20 I 4 PGM PREAMPLIFIER SIDETONE PROGRAMM INPUT A PGM VOLUME NORMAL II BINAURAL CALL LEDS CALL LED MULTI COMPARATOR DELAY VIBRATOR 2r CALL SWITCH W i AUDIO FILTER CURRENT SOURCE BUZZER BUZZER BUZZER ref DELAY GENERATOR E BUZZER VOLUME 120 SYSTEM CONFIGURATION a TELEPHONE TELEPHONE LINE 2 CHANNEL INTERCOM NETWORK CONFIGURATION PAGE 6 User Manual PS 19 AM Issue 2011 ASL Intercom BV 13 0 EARTHING POWER SUPPLY Z1 Z2 Line Impedances Mains Earth X 211 A KA Wallbox w DER AED D Hr J 4 I HL L ONLY ONE Individual intercom line shield EARTHING POINT
7. edance of each can must be minimum 400 ohms Pin assignment Pin 1 shield mic GND Pin 2 mic Pin 3 phones Pin 4 phones User Manual PS 19 AM Issue 2011 ASL Intercom BV 70 BOTTOM PANEL CONTROLS E E __ f Kon 2 volume side tone 1 23 l 7 uw l j mic gain intercom heodset line input 10 SIDE TONE trimmer This trimmer adjusts the level of your own voice In your headset Adjustment procedure e Set trimmer in start position turn fully clockwise e Switch Off the microphones of all speaker stations connected to the party line 8 0 TECHNICAL SPECIFICATIONS PS 19 AM System Dynamic range 80 dB 1 kHz THD 1 Call signal 2 8 mA Call signal threshold receive 2 4V DC Supply voltage 30V DC 12 32V DC Power interrupt time mic mute 0 1 sec Intercom party line Impedance 350 Q 1 kHz 2 2 DC Audio level nom 18 dBu max 4 dBu Mic pre amp Headset mic impedance 200 Gain 35 60 dB adjustable internally Presence filter 6 dB at 5 kHz Frequency response 200Hz 15 kHz 3 dB Power to electret mic 9V DC Headphone Driver Amps Max load 200 Max output level monaural 14 Vrms 200 Q binaural 2x 0 16 Vrms 400 Q Max output power monaural 1 Wrms 200 Q binaural 2x 0 28 Wrms 400 Push the TAL
8. l program audio signals It is housed in a strong metal case provided with a steel belt clip On the front panel are a Volume listen level control for the intercom signals a Volume control for the PGM signals a TALK push button with LED indicator and a CALL push button with LED indicator On the bottom panel are a side tone trimmer a buzzer volume trimmer a mic gain trimmer and a PGM Line Mic level selector On the rear panel are an XLR 3 connector for the intercom connection cable the party line an XLR 3 connector for the external program audio and an XLR 4 connector for the headset The program PGM audio is only heard at the local headset not sent to the intercom line Optionally an XLR 5 headset connector can be fitted allowing the user to hear the intercom 2 0 UNPACKING The shipping carton contains the PS 19 AM and 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 19 AM will form a part of an existing or new intercom system Connection to it 15 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 connection cable 40 WARRANTY This unit is warranted by ASL to the original user purchaser against defects in workmanship and materials in its ma
9. not to be connected with overall shielding Overall shield of multipair cable and or metal cable trunk EARTHING CONCEPT ASL INTERCOM PAGE 7 User Manual PS 19 Issue 2011 ASL Intercom BV
10. nufacture for a period of 12 months from date of shipment to the end user signal at the left headset can and the PGM signal at the right headset can Special attention has been paid to the intelligibility of soeech By applying low noise high speed op amps a speech presence filter and propriety high power bridged headphone amplifiers communication is very comfortable even in environments with a high level of background noise The unique ASL call system provides both a flashing red LED and a very distinctive sound signal A momentary push of the Call button makes the red LED flash whilst holding the button for 2 seconds activates the Call sound signal The volume of this sound signal the buzzer can be adjusted at the front panel Fully electronic switching increases reliability and allows for e soft microphone On switching latched or momentary e Remote Mic Mute facility 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 occurred please notify your dealer immediately so that a written claim can be initiated Please also refer to the warranty section of this manual To connect the PS 19 AM to the intercom system use professional flexible microphone cable with 2 wires and 1 shield only Connect this cable to the LINE connector on the rear panel The PS 19 AM is fully protected agains
11. o the metal housing of the master station or of the power supply or of XLR 2 wall boxes See Earthing Concept Connect cable trunks connection boxes and overall multi pair cable screens to clean earth Metal cable trunks metal connection boxes and overall multi pair cable screens should be interconnected and at one point the central earth point in the intercom network only be connected to a clean earth or a safety earth See Earthing Concept Keep metal connection boxes and trunks 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 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 ca
12. t eventual wiring mistakes reverse power or short circuit in the interconnecting cables 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 your local ASL dealer shipping costs prepaid A note must be included stating the fault s found and a copy of the original suppliers invoice User Manual PS 19 Issue 2011 ASL Intercom BV 5 0 FRONT PANEL CONTROLS TALK 4 1 PGM VOLUME control knob This knob is for adjusting the listen level of the PGM input signal 2 VOLUME control knob This knob 15 for adjusting the listen level of the Intercom signal 3 TALK button By pushing this button the signal of the headset microphone is sent to the intercom party line When the TALK button is switched On its large green LED is lit Momentary switching When the TALK button is pushed and held the microphone signal is sent to the intercom channel until the button is released 6 0 REAR PANEL CONNECTORS 7 PGM connector This XLR 3 connector is for feeding PGM signals into the PS 19 AM The input is electronically balanced and accepts audio levels between 18 dBu and 22 dBu when line level is selected or between 38 dBu and 2 dBu when mic level is selected See also line mic selector 13 Pin assignment Pin 1 OV ground Pin 2 signal Pin 3 signal
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