User manual ASL INTERCOM PS 430

[. . . ] It incorporates a loudspeaker and a gooseneck microphone and provides full duplex communications within an ASL intercom system. The PS 430 RM model has a small built-in electret microphone. Each channel has a Volume (listen level) control, a Talk and Call button with LED indicators and a two-stage sidetone trimmer. A master volume controls the total speaker/headset volume. [. . . ] 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. MASTER VOLUME This knob adjusts the volume of the speaker or headset. 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. - switch off the microphone of all connected (speaker!) stations. - switch on the microphone of the PS 430. - adjust the listen level by turning the sidetone trimmers. 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. 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. One connector is for channels A and B, one for channel C and D. 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. [. . . ] 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. output current output impedance SIDETONE rejection BUZZER max. [. . . ]