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PREFACE
Packing Material
Security ( Keys and Locks)
Fig. 1-1:
Duplicate Registration Card
11
INTRODUCTION AND SYSTEM DESCRIPTION
a
1-1
Function Of OPTIMOD-TV
1-2
Comparison With OPTIMOD-FM Model 8100A
1-3
Comparison With OPTIMOD-TV Model 8180A
1-3
Split Configuration
1-3
Simplified System Description
1-3
Input Conditioning Filter
1-4
Dual-Band Compressor
1-4
Preemphasis and High Frequency Limiter
1-5
Loudness Controller
1-6 " Hilbert- Transform Clipper"
1-6
Frequency-Contoured Sidechain Overshoot
Corrector
1-7
Stereo Generator Interface Port And Line
Ampli fier/Deemphasis
1-7
VU Meter
1-7
BTSC Stereo And The 8182A
1-8
Summary
APPLICATIONS
2-1
Studio-Transmitter Links
2-2
Exciters
2-3
Additional Aural Subcarriers
2-3
Stereo
Eg
INSTALLATION
3-1
Registration Card
3-1
Unpacking And Initial Inspection
3-1
Physical Examination
3-1
Power Considerations
3-2
Fig. 3-1:
Power Cord Compatibility
3-2
Initialization Options
3-2
Output Preemphasis
3-3
Fig. 3-2: Output Preemphasis Jumper
3-3
Input Attenuator Pads
3-3
Fig. 3-3:
Input Attenuator Jumper
3-3
Defeating The 30Hz Highpass Filters
3-3
L/R or L+R/L-R Output Mode
3-4
Fig. 3-4: Card # 7 Output Format Jumper
3-4
Loudness Controller
3-4
Fig. 3-5: Card # 2 Power-Up
3-4
Fig. 3-6: Deemphasis Jumpers
3-4
Other Jumpers
3-4
Reassembly
4
3-5
Initial Electrical Checkout
3-5
Equipment Location
3-5
Difficult Environments
3-6
Mounting And Grounding
3-6
Input Signal Connections
3-7
Accessory Chassis Output Connections
3-7
Main Chassis Output Connections
3-7
Interfacing A BTSC Stereo Generator
3-8
Remote Gain Reduction Meter
INITIAL SETUP PROCEDURE
4-1
Dual-Chassis Alignment
4-4
Single-Chassis Alignment
4-5
Program Tests
4-6
Fig. 4-5: Recommended Initial Control Settings
OPERATING INSTRUCTIONS
5-1
Audio Quality and OPTIMOD-TV
5-2
Processing Philosophy
5-2
On Loudness
5-2
Functions Of The Setup Controls
5-3
Input Attenuators
5-3
Release Time
5-3
Clipping
5-3
High Frequency Limiting
5-3
Bass Coupling
5-3
Gate Threshold
5-4
Detailed Discussion of the Setup Controls
5-4
Bass Coupling Control
5-5
Clipping
5-5
Release Time And Amount Of Gain Reduction
5-6
High Frequency Limiting
5-7
Gate Threshold
5-7
On Excessive Commercial Loudness
5-7
Summary
5-9
CATALOG Of OPERATING OBJECTIVES AND
SOLUTIONS
5-9
Fig. 5-1: Initial Control Settings
5-9
To Control Relative Loudness
5-9
To Obtain More Consistent Levels
5-9
To Obtain More Brightness
5-9
To Obtain More Bass
5-10
To Obtain Less Bass
5-10
To Make " Air" Sound Most Like "Program"
5-10
To Obtain "Open" Sound
5-10
To Obtain A " Heavily-Processed" Sound
5-10
To Avoid "Noise Pump-Up"
5-10
To Achieve More Subtle Gain Riding On Wide-
Dynamic Range Material
5-10
To Avoid Excessive Sibilance
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