User manual ASL INTERCOM PS 630

[. . . ] Fully electronic switching increases reliability and allows for : - 'soft' microphone ON switching, latched or momentary - remote Mic Mute facility. - automatic speaker attenuation (adjustable), when the microphone is activated. The PS 630 is a six channel speaker station designed for use in both portable and fixed intercom systems. It incorporates a loudspeaker and a gooseneck microphone and provides full duplex communications within an ASL intercom system. The PS 630 RM model has a small built-in electret microphone. [. . . ] It compensates the capacity of the interconnecting cables. It prevents the speaker from feeding back into the gooseneck microphone (unit feedback). 4. 0 FRONT PANEL CONTROLS & CONNECTOR continued 8 SPEAKER ATTENUATOR trimmer This trimmer allows you to dim the speaker automatically, when the gooseneck microphone is switched on. It prevents: - unit feedback if sidetone rejection is not sufficient. - system feedback or a 'hollow' sound when the gooseneck microphones of other speaker stations on the same channel are activated simultaneously. Adjustment procedure : - switch off TALK buttons. - inject an audio signal on the selected intercom channel. - activate microphone and adjust the desired amount of attenuation. The speaker attenuator has no effect when a headset is used. - on the left or right can. 10 HEADSET connector A XLR-4 type connector for the connection of a local headset when private conversation is desired. These must have a can impedance of 200 ohms (or greater), or each minimum 400 ohmd when in parallel. The headset microphone may be of the dynamic or electret type Pin assignments : 1. phones When connecting a headset, speaker and gooseneck microphone will be disabled automatically. The PS 630 can optionally be equiped with a XLR6 headset connector for binaural use. Jumpers on the front PCB board inside determine the destination of the listen signals on the headset. Each listen signal of the six channels can independantly be placed: - on the left or right can. 11 GOOSENECK MICROPHONE A high quality electret noise canceling microphone. A limiter prevents the mic pre-amp from clipping when speaking close in the microphone. The microphone is automatically disabled when a headset is used. 12 LOUDSPEAKER A high quality loudspeaker driven by a 1. 3 Watt amplifier. The speaker is automatically disabled when a headset is used. 9 BUZZER VOLUME trimmer This trimmer adjusts the volume of the internal buzzer, which is located behind the front panel. The buzzer is activated if you press the CALL button of the PS 630 or a CALL button of any other station (on the channel to which the PS 630 is connected), longer than 2 seconds and the buzzers are not muted (on the master station or power supply). 10 HEADSET connector A XLR-4 type connector for the connection of a local headset when private conversation is desired. These must have a can impedance of 200 ohms (or greater), or each minimum 400 ohm when in parallel. The headset microphone may be of the dynamic or electret type Pin assignments : 1. [. . . ] output level normal 14 V rms (200 ohms) binaural 8 V rms (400 ohms) max. output power normal 0. 5 W rms (each can) binaural 0. 16 W rms (each can) SPEAKER DRIVER AMP speaker impedance max. output current output impedance SIDETONE rejection BUZZER max. SPL DIMENSIONS AND WEIGHT width height depth weight 50 ohms 1. 3 W rms 3 mA rms > 150 Kohms 0 - 30dB adjustable 100 dBA 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. [. . . ]