User manual ASL INTERCOM PS 289

[. . . ] 8) Do not place the apparatus on an unstable cart, stand, tripod, bracket or table. The apparatus may fall, causing serious personal injury and damage to the apparatus. Never place the apparatus near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. Do not place the apparatus in an enclosure such as a cabinet without proper ventilation. [. . . ] Mains Fuse For all voltages : T 1250. User manual PS 289 / Issue 1 © 2006 ASL Intercom, Utrecht, The Netherlands 6. 0 FRONT PANEL CONTROLS AND CONNECTOR 23 45 6 7 8 9 1 1 POWER ON/OFF switch Mains power push button for switching the internal power supply ON and OFF. OVERLOAD LED This LED illuminates, when the internal circuit-breaker shuts off line power due to overload. A cause for overload can be a connection of too many user stations, a short-circuit in the interconnecting cables, or a thermal overload. The circuit-breaker resets automatically 3 seconds after the cause of the overload has been removed, and restores line power automatically. The LED will also come on for a few seconds every time you switch on mains power. POWER LED This LED illuminates if line power is supplied by the internal power supply. SYSTEM LINK IN A This LED illuminates if another ASL Intercom System has been connected to the PS 289 through the "System Link" connector of Channel A. The Line Impedance is now provided by the other Intercom system and the internal line impedance for Channel A is switched off. The Buzzer mute function on Channel A can now only be controlled by the connected system, while the Buzzer Mute on Channel B will still be controlled by the PS 289. The Mic Mute signals 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. 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. The Line Impedance is now provided by the other Intercom system and the internal line impedance for Channel B is switched off. The Buzzer mute function on Channel B can now only be controlled by the connected system, while the Buzzer Mute on Channel A will still be controlled by the PS 289. The Mic Mute signals given by the other Intercom system are also sent to the user stations connected to Channel B 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. 6 2 ALL MIC'S ON/OFF button With this pushbutton all microphones of the connected stations can be switched off. Each user station can activate its microphone again by pushing its TALK button. ALL BUZZERS ON/OFF button With this button all buzzers of the connected stations can be muted. AUX VOLUME control channel A This knob adjusts the level of the Aux input signal to intercom line A. AUX VOLUME control channel B This knob adjusts the level of the Aux input signal to intercom line B. 7 8 9 3 4 5 6 User manual PS 289 / Issue 1 © 2006 ASL Intercom, Utrecht, The Netherlands 7. 0 REAR PANEL CONTROLS AND CONNECTOR 17 A & B LINE connectors These XLR-3 type connectors are for connecting the remote-stations, via standard microphone cable. There are two connectors for channel A and two connectors for channel B. audio wire 18 SYSTEM LINK IN connector Input for the cable of an external party-line Intercom system. [. . . ] It develops a DC potential over the line impedance that will be sensed by each station and interpreted as a Call signal. 10. 0 GUARANTEE ASL Intercom warrants this unit to the original end-user purchaser against defects in workmanship and materials in its manufacture for a period of one year from the 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 its 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. [. . . ]