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OPTIMOD-FM 8100A/1
Orban OPTIMOD-FM 8100A/1 User Manual
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Operating
Manual
OPTIMOD-FM
MODEL
8100A/1
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Table of Contents
Table of Contents
9
Getting the Sound You Want
48
To Obtain more Loudness
48
To Obtain more Brightness
48
To Obtain more Bass
48
To Obtain Less Bass
48
To Make " Air" Sound most Like " Prcgram
48
To Obtain " Open" Sound
49
- to Obtain a " Heavily- Processed" Sound
49
- to Avoid " Noise Pump- up
49
To Achieve more Subtle Gain Riding on Wide-Dynamic Range Material
49
To Avoid Excessive Sibilance
49
System Performance Verification
51
Mono Performance Verification
51
Stereo Performance Verification
51
Main Channel
51
Pilot Frequency
53
Routine Maintenance
55
Routine Performance Verification
55
Stereo Generator Tests
56
38Khz Suppression
56
Audio Processing
56
Phase- Corrected Lowpass Filter/Preemphasis
63
High Frequency Limiter
63
FM Smart Clipper
64
Clipper with Dynamic Threshold
65
15Khz Phase- Corrected Lowpass Filter
65
Distortion- Cancelling Sidechain
65
Frequency- Contoured Sidechain Overshoot Compensator
66
19Khz Oscillator
67
19Khz Doubler
68
38Khz Filter and Phase Shifter
68
38Khz AGC Loop
68
38Khz Phase-Locked Loop
68
Stereo Modulator
69
Mode Switching Logic
70
Power Supplies
70
Appendix B: Circuit Description
73
30Hz Highpass Filter
73
Allpass Phase Scrambler and Preemphasis/Deemphasis
74
Dual- Band " Master/Bass" Compressor
74
Crossover and Bass Clipper
74
Compressor Control Circuitry
75
Gating Circuitry
76
Phase- Corrected Lowpass Filter/Preemphasis
78
Clipper with Dynamic Threshold
80
15Khz Phase- Corrected Lowpass Filter
81
Frequency- Contoured Sidechain Overshoot Compensator
82
Stereo Generator
112
Appendix C: User Access
120
Appendix F: Trouble Diagnosis
120
Cards Common to both Channels
120
Factory Assistance
125
Troubleshooting IC Opamps
126
Appendix D: Field Audit- Of- Performance
129
Shipping Instructions
129
Appendix G: Changing Preemphasis
133
Appendix H: Detailed Exciter Interface Instructions
133
Collins 310Z- 1(B)
133
Continental 510R-1 ( Collins 310Z-2)
133
Gates ( Harris) te - 1 and te
134
Rca Bte-15
134
Table of Contents for Appendix J
135
Appendix J: Schematics
135
And Parts Lists
135
Schematics with Parts Locators
135
Appendix E: Field Alignment Procedure
142
Card # 3/#4
142
Card 9
153
Card 5
155
Card#8/#9
155
Parts List
157
Vendor Codes
168
4
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Orban OPTIMOD-FM 8100A/1 Specifications
General
Brand
Orban
Model
OPTIMOD-FM 8100A/1
Category
Computer Hardware
Language
English
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