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It is also possible to operate an MPX-6 from a graphics plate. Please refer to the Graphics Plate Operation Guide for additional instructions. Printed on recycled paper. IQ-MSD 12/94 MPX-6 Mixer/Multiplexer Operation Guide ©crown 1 The MPX-6 The MPX-6 is a 6x2 mixer/multiplexer with six mic/line inputs, two main line-level outputs and two switchable bus outputs. Under computer control, it can switch the inputs on or off, control their levels, route them to two main and two bus outputs. Multiple MPX-6s can be connected together to create larger systems. Because the MPX-6 is controlled by computer software, it can be located in out-of-the-way places. The computer software is designed for use by audio people—not computer hacks. 1.1 MPX-6 Features Software controls: The software features are controlled in the control block screen. □ Increase/decrease each input level in Vz dB steps over a 125 dB range. □ Independently switch each audio bus output on and off. □ Independently mute each input (mute = full attenuation). □ Turn any auxiliary device connected to the AUX port on or off. □ Force the DSPI (Data Signal Presence Indicator) to remain on. (A troubleshooting feature for Crown Bus loop communication.) Hardware controls: The hardware controls are located on the back panel of the unit. □ Individual three-position input level control for each input. The positions are for line, mic and phantom powered mic level signals. □ Individual preamp gain control for each input. (Can be used to equalize differing input levels.) Protection features: □ Automatic microprocessor reset if noise spikes, power dropouts or other disturbances are encountered. □ DSPI (Data Signal Presence Indicator) provides swift isolation of wiring problems, improper addresses and disconnected or off-line components. □ NiCad battery and built-in charger maintain all settings. When fully charged, the unit can be disconnected from power for 60+ days. Rev. 1 MPX Page 3 © crown MPX-6 Mixer/Multiplexer Operation Guide Digitally controlled analog circuitry: □ Digital control also permits precise calibration. The gain settings of the MPX-6 are accurate to ± 1.0 dB. Communication features: □ The MPX-6 can function as an IQ interface for one Crown Bus loop. 1.2 About this Operation Guide... This Operation Guide describes how to use IQ software to control an MPX-6 mixer/ multiplexer. This Operation Guide does not discuss the hardware installation or hardware controls. Please refer to the IQ Mixer/Multiplexer Hardware Installation Manual for those details. Nor does this Operation Guide discuss the general features of the IQ software. Please refer to the User’s Manual for your IQ software for that information. Please also consult the MPX-6 Application Notes for additional detail on how to use an MPX-6 in a variety of different applications. Page 4 MPX Rev. 1, MPX-6 Mixer/Multiplexer Operation Guide icromn 2 Operation The MPX-6 is controlled with the control block screen of the IQ software. To switch to the MPX-6 control block screen, press (TQ to access the Device menu then press (¥1. J ;T can also be used to select the MPX-6 control block screen from the Device menu followed by [Enters-1] to execute the selection. A mouse (0) can also be used. An MPX-6 control block screen is shown below: ¡Multiplexer 001 Zone i {Model< jLocation ¡Purpose HPX-6 I NORTH SHÖII ROOM !>!ГДЩ Pill ON Multiplexer 002 Zone I ¡Model MPX-6 Input fiux