Instruction manual

— —
1
TABLE OF CONTENTS
Section I - INTRODUCTION
Model 708 Product Description ........................................................................................... 3
General - Features
Audio Pre-Processing Requirements................................................................................... 3
Pre-emphasized Transmission - Split-Spectrum Peak Control -
Internal Overmod Protection
Model 708 Technical Specifications..................................................................................... 4
Patent Notice ........................................................................................................................ 5
Block Diagram ...................................................................................................................... 6
Section II - Installation
Unpacking and Inspection ................................................................................................... 7
Mounting ...............................................................................................................................7
Rack Requirements - Heat Dissipation
AC (Mains) Power ................................................................................................................. 7
As Delivered - Voltage Selector - Power Cord
Radio Frequency Interference (RFI) .................................................................................... 8
Location - Ground Loops
Line Input and Input Range Selection ................................................................................. 8
Input Connections - Balanced Inputs - Unbalanced Inputs -
Input Gain Range - Gain Jumpers
Pre-Emphasis Selection ....................................................................................................... 9
Subcarrier Inputs.................................................................................................................10
Composite Output ..............................................................................................................11
Output Ground Loops
Section III - Setup and Operation
Panel Controls and Indicators ...........................................................................................12
(All Controls and Indicators Defined According to Function)
Normal Setup Procedure ....................................................................................................15
Input Gain Calibration - Pilot and Subcarrier Adjustments -
Output Pre-Check - Output Level Adjustment