Section 1
Introduction
8400
OPTIMOD-FM DIGITAL AUDIO PROCESSOR ...................................................................1-2
User-Friendly Interface........................................................................................................1-3
Absolute Control of Peak Modulation ..................................................................................1-3
Flexible Configuration..........................................................................................................1-4
Adaptability through Multiple Audio Processing Structures................................................1-4
Controllable..........................................................................................................................1-5
PRESETS IN OPTIMOD-FM.......................................................................................................1-6
Factory Presets.....................................................................................................................1-6
User Presets..........................................................................................................................1-6
INPUT/OUTPUT CONFIGURATION ...............................................................................................1-6
Digital AES/EBU Left/Right Input/Output............................................................................1-7
Analog Left/Right Input/Output ............................................................................................1-7
Stereo Analog Baseband Composite Output.........................................................................1-8
Subcarriers ...........................................................................................................................1-8
Remote Control Interface......................................................................................................1-8
Computer Interface...............................................................................................................1-9
LOCATION OF OPTIMOD-FM.................................................................................................1-10
Optimal Control of Peak Modulation Levels......................................................................1-10
Best Location for OPTIMOD-FM.......................................................................................1-11
STUDIO-TRANSMITTER LINK....................................................................................................1-13
Transmission from Studio to Transmitter...........................................................................1-13
Using the Orban 8100AST (or 8100A/ST) Studio Chassis with the 8400...........................1-16
STL and Exciter Overshoot.................................................................................................1-16
USING LOSSY DATA REDUCTION IN THE STUDIO .....................................................................1-17
ABOUT TRANSMISSION LEVELS AND METERING......................................................................1-17
Meters .................................................................................................................................1-17
Studio Line-up Levels and Headroom ................................................................................1-18
Transmission Levels............................................................................................................1-19
LINE-UP FACILITIES.................................................................................................................1-19
Metering of Levels ..............................................................................................................1-19
MONITORING ON LOUDSPEAKERS AND HEADPHONES ..............................................................1-20
EAS TEST ................................................................................................................................1-22
WARRANTY, FEEDBACK...........................................................................................................1-23
User Feedback Form ..........................................................................................................1-23
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