User manual ASL INTERCOM PS 279

[. . . ] PRO SERIES USER MANUAL FOR THE PS 279 DUAL CHANNEL MASTER STATION CONTENTS 1. 0 2. 0 3. 0 4. 0 5. 0 6. 0 7. 0 8. 0 9. 0 10. 0 11. 0 12. 0 13. 0 SAFETY INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 MECHANICAL INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 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 279 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 279. The Mic Mute signals given by the other Intercom system are also sent to the user stations connected to Channel A of the PS 279. If a Mic Mute is given by the PS 279, 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 279 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. - switch on the microphone of the required channel. - turn up the volume of the required channel. - adjust the listen level by turning the sidetone trimmer. The operating area is between fully clockwise and minimum level. Adjusting the sidetone does not affect the level of your voice as it is heard by other stations. TALK buttons These buttons allow you to talk to each channel separately or simultaneously. The large green LED is lit when the talk function is activated. Latched switching: When a TALK button is pressed shortly, the microphone of the chosen channel will be switched on and latches electronically. When pressed again, the microphone will switch off. Momentary switching: When holding a TALK button pressed while talking, the microphone will remain switched on until the button is released. Then the microphone will switch off automatically. 13 15 CALL A & B buttons These push buttons activate the CALL system. A momentary push will send a visual CALL signal to all stations connected to that intercom channel and the CALL LEDS will start flashing. When holding the buttons pressed for 2 seconds, the buzzer will be activated. After the CALL button is released the LEDS will continue to flash for further 2 seconds. [. . . ] power and audio to the intercom stations use the same cable. 12. 0 DESIGN CRITERIA 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 airports, railway stations and coach terminals. ASL equipment can be used outdoors in normal weather conditions. In conditions with excessive cold (<-10° C), heat (>50° C) or humidity (>85%), ASL equipment might not perform properly. ASL equipment is not designed to be used under water, or in situations where explosion safe equipment is specified by authorities. [. . . ]