User manual ASL INTERCOM PS 430

[. . . ] The unit is equiped with a limiter for the gooseneck microphone, allowing the user to speak close into the microphone without giving rise to overload and distortion. Private conversation may be carried out via the headset connector with a headset or telephone handset. When a headset is connected, both gooseneck microphone and speaker are disabled automatically. As an option, a XLR-6 headset connector can be fitted for binaural use of the headset. [. . . ] 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 430 can optionally be equiped with a XLR-6 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 four channels can independantly be placed: - on the left or right can. - on both cans. 2 7 3 CALL buttons These push buttons activate the call system, for each channel separately. A momentary push will send a call signal to all stations connected to the intercom channel and the call LEDS will start flashing. Press and hold the button for 2 seconds will activate the call buzzer, if not muted. After the CALL button is released the LEDS will continue to flash for further 2 seconds. SIDETONE LEVEL trimmers These trimmers (one for each channel) control the level of your own voice as you hear it in the speaker or headset. It prevents the speaker from feeding back into the gooseneck microphone. Adjustment procedure for all sidetone trimmers: - set trimmer in start position : fully clockwise. Adjusting the sidetone does not affect the level of your voice as it is heard by other stations. 9 4 5 4 User Manual PS 430 / Issue 1 © 1994 ASL Intercom, Utrecht, Holland. 4. 0 FRONT PANEL CONTROLS & CONNECTOR 10 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. 11 LOUDSPEAKER A high quality loudspeaker driven by a 1. 3 Watt amplifier. The speaker is automatically disabled when a headset is used. 5. 0 SIDE PANEL CONNECTORS 12 LINE connector for channel A & B 13 LINE connector for channel C & D These two XLR-5 connectors are for connecting the PS 430 to the intercom system. For linking the XLR-5 sockets to XLR-3 intercom line connectors, each PS 430 comes with two Y-cords, having a XLR-5 connector at one end and two XLR-3 connectors at the other end. On the Y-cords, the XLR-3 with the white ring corresponds with channel A or C. Pin assignments XLR-5 connectors : 1. audio wire channel #12 A+B A A B B #13 C+D C C D D 6. 0 INTERNAL CONTROLS - slide the plate to one side and take it out. The two trimmers are labeled : GOOSE for the gooseneck microphone HEADS for the headset microphone. Inside the unit there are two trimmers to adjust the mic gain of the gooseneck microphone and the headset microphone separately. They can be reached as follows : - remove the screws of the bottom plate. User Manual PS 430 / Issue 1 © 1994 ASL Intercom, Utrecht, Holland. 5 7. 0 CABLING For the PRO Series Intercom system the interconnecting cables are of the shielded two-conductor microphone cable type and the intercom line connectors are of the XLR-3 type. [. . . ] PREAMP gooseneck microphone type noise cancelling electret headset mic. impedance 200 ohms gain 40 dB - 70 dB (adjustable internally) presence filter +6 dB at 5 kHz frequency response 200 Hz - 13 kHz (-3 dB) V electret mic +9 V DC HEADPHONES DRIVER AMP max. 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. [. . . ]