Table of Contents
Index.........................................................................................................................0-9
Section 1 Introduction
.........................................................................................................................................1-1
ABOUT THIS MANUAL.......................................................................................................1-1
THE OPTIMOD-FM 8300 DIGITAL AUDIO PROCESSOR .......................................................1-1
User-Friendly Interface............................................................................................1-2
Absolute Control of Peak Modulation...................................................................1-2
Flexible Configuration ............................................................................................1-3
Adaptability through Multiple Audio Processing Structures ...............................1-4
Controllable .............................................................................................................1-5
PRESETS IN OPTIMOD-FM ..............................................................................................1-5
Factory Presets .........................................................................................................1-5
User Presets..............................................................................................................1-6
INPUT/OUTPUT CONFIGURATION ........................................................................................1-6
Digital AES3 Left/Right Input/Output ....................................................................1-7
Analog Left/Right Input/Output.............................................................................1-7
Stereo Analog Baseband Composite Output ........................................................1-7
Subcarriers................................................................................................................1-8
Remote Control Interface .......................................................................................1-8
Computer Interface .................................................................................................1-9
RS-232 Serial Port ............................................................................................................. 1-9
RJ45 Ethernet Connector ................................................................................................. 1-9
LOCATION OF OPTIMOD-FM.........................................................................................1-10
Optimal Control of Peak Modulation Levels.......................................................1-10
Best Location for OPTIMOD-FM ...........................................................................1-11
If the transmitter is not accessible:................................................................................ 1-11
If the transmitter is accessible: ...................................................................................... 1-11
STUDIO-TRANSMITTER LINK.............................................................................................1-13
Transmission from Studio to Transmitter.............................................................1-13
Digital Links .................................................................................................................... 1-13
Composite Baseband Microwave STLs........................................................................... 1-14
Dual Microwave STLs...................................................................................................... 1-14
Analog Landline (PTT / Post Office Line)....................................................................... 1-16
Using the Orban 8100AST (or 8100A/ST) External AGC with the 8300 .............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
Fig. 1-1: Absolute Peak Level, VU and PPM Reading.................................................... 1-18
Transmission Levels................................................................................................1-19
LINE-UP FACILITIES .........................................................................................................1-19
Metering of Levels.................................................................................................1-19
Composite Output Level ................................................................................................ 1-19
Built-in Calibrated Line-up Tones.................................................................................. 1-20
Built-in Calibrated Bypass Test Mode............................................................................ 1-20
MONITORING ON LOUDSPEAKERS AND HEADPHONES..........................................................1-20
EAS TEST......................................................................................................................1-21