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                        User manual PS 289 / Issue 1 © 2007  ASL Intercom, Utrecht, The Netherlands

 

 

 

 

2.0 

GENERAL DESCRIPTION

 

 
 

The PS 288 is designed to be a dual channel power 
supply in an ASL intercom system and can be used in 
portable as well as fixed applications. It incorporates an 
adjustable auxiliary program signal input and uses only 1U 
of 19” rack space. 
 
The unit is very versatile and ideal for use in applications 
where standard microphone cable is available and ease of 
setup is of paramount importance. 
 
The intercom line power supply is fully protected and can 
drive at least 20 beltpacks or 10 speaker stations, or a 
combination, operating at full power. 

For each channel separately, the intercom line impedance 
circuitry is installed. 
 
Fully electronic switching increases reliability and allows 
for remote Mic Mute facility. 
All microphones of the stations connected to the PS 280 
can be muted by pushing a single front panel button. 
 
An Aux input at the rear panel, allows injecting external 
audio signals of line level into the intercom audio line. 

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3.0 

UNPACKING

 

 
 

The shipping carton contains the parts listed below 

The PS 289 

Mains power cable 

Spare fuses 

User manual 

 
If any are missing, contact your dealer. 
 
With the PS 289 will be a small packet of spare fuses. 
Please keep them in a safe place. 
There is also one spare fuse included in the mains inlet. 

ASL has taken great care to ensure that this product 
reaches you in flawless condition. 
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. 
 

 
 

4.0 

MECHANICAL INSTALLATION

 

 
 

A vertical rack space of 1U (1.75”, 44mm) is required for 
the PS 289. It is not necessary to provide rear support by 
extra bracing or shelving. 
 
Adequate ventilation must be provided by allowing 
sufficient space around the sides and rear of the unit to 
ensure free circulation of air. Forced cooling is not 
required. 
 

The power unit is mounted on the bottom of the unit, and 
after a period of time it will feel hot to the touch on top 
and bottom. This is normal, and should be no cause for 
alarm 

Summary of Contents for PS 289

Page 1: ...RIPTION 4 3 0 UNPACKING 4 4 0 MECHANICAL INSTALLATION 4 5 0 MAINS POWER 5 6 0 FRONT PANEL CONTROLS 6 7 0 REAR PANEL CONTROLS 7 8 0 CABLING 8 9 0 PARTY LINE TECHNICAL CONCEPT 9 10 0 WARRANTY 9 11 0 DESIGN CRITERIA 9 12 0 TECHNICAL SPECIFICATIONS 10 User Manual PS 289 Issue 1 2007 ASL Intercom Utrecht The Netherlands ...

Page 2: ...2 User manual PS 289 Issue 1 2007 ASL Intercom Utrecht The Netherlands ...

Page 3: ...ower plug not the cord 11 Insert the plug properly Do not defeat the safety purpose of the polarized or grounding type plug A polarized AC line plug has two blades with one wider than the other This plug will fit into the power outlet only one way This is a safety feature If you are unable to insert the plug fully into the outlet try reversing the plug If the plug still fails to fit contact an ele...

Page 4: ...CKING The shipping carton contains the parts listed below The PS 289 Mains power cable Spare fuses User manual If any are missing contact your dealer With the PS 289 will be a small packet of spare fuses Please keep them in a safe place There is also one spare fuse included in the mains inlet ASL has taken great care to ensure that this product reaches you in flawless condition After unpacking the...

Page 5: ...d Those units that are supplied to the North American market will have an integral moulded 3 pin connector which is provided to satisfy required local standards 5 1 SAFETY EARTHING The green and yellow wire of the mains cord must always be connected to the electrical installation safety earth or ground It is essential for personal safety as well as for proper operation of the PS 289 and the other ...

Page 6: ...als given by the other Intercom system are also sent to the user stations connected to Channel A of the PS 289 If a Mic Mute is given by the PS 289 it is only send to its own channels and does not mute the microphones of the other Intercom System 5 SYSTEM LINK IN B This LED illuminates if another ASL Intercom System has been connected to the PS 289 through the System Link connector of Channel B Th...

Page 7: ...nals from the other system 19 AUX INPUT connector This XLR 3 type aux input connector is electronically balanced and accepts audio levels between 20dBu to 21dBu on line level Pin assignments 1 0V ground 2 signal 3 signal 20 GROUND LIFT switch With this switch the pin 1 of the AUX input XLR is lifted from ground when in Lift position 21 MAINS INLET DISCONNECT DEVICE IEC Mains connector For correct ...

Page 8: ...er connected and at one point the central earthing point in the intercom network only be connected to a clean safety earth See page 12 for 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 oth...

Page 9: ...ound and a copy of the original suppliers invoice THIS PRODUCT WAS DESIGNED DEVELOPED AND MANUFACTURED BY ASL INTERCOM BV UTRECHT THE NETHERLANDS Website www asl inter com Email info asl inter com Applications Environment of use ASL Pro Series equipment is designed for use as a wired communications system in theatres in Radio TV production facilities in factories and in utilities complexes such as...

Page 10: ...PUT input impedance 11 Kohms Nominal input level 20 dBu to 10 dBu Max input level 21 dBu DIMENSIONS AND WEIGHT width 19 483 mm height 1U 44 5 mm depth 150 mm weight 1 85 Kg GENERAL SYSTEM SPECIFICATIONS intercom line impedance 350 ohms 1kHz 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 3...

Page 11: ...User manual PS 289 Issue 1 2006 ASL Intercom Utrecht The Netherlands 11 ...

Page 12: ...12 User manual PS 289 Issue 1 2006 ASL Intercom Utrecht The Netherlands ...

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Page 14: ...14 User manual PS 289 Issue 1 2006 ASL Intercom Utrecht The Netherlands ...

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