Crown FM500 Manuals

Manuals and User Guides for Crown FM500. We have 1 Crown FM500 manual available for free PDF download: User Manual

Crown FM500 User Manual

Crown FM500 User Manual (109 pages)

Broadcast Transmitter

Brand: Crown | Category: Transmitter | Size: 2.57 MB

Table of Contents

Important Notices
2
Table of Contents
3
Section 1-Getting Acquainted

7
- Your Transmitter
  8
- Applications and Options
  9
- Stand-Alone
  10
- Backup
  10
- Booster
  10
- Exciter
  10
- Translator
  11
- Satellator
  12
- Transmitter/Exciter Specifications
  13
- Receiver Specifications
  15
- Safety Considerations
  16
- Dangers
  16
- Warnings
  16
- Cautions
  16
Section 2-Installation

17
- Operating Environment
  18
- Remove PA Tray Spacers
  18
- Power Connections
  19
- Frequency (Channel) Selection
  21
- Modulation Compensator
  22
- RF Tuning Adjustments
  23
- Receiver Frequency Selection
  23
- RF Connections
  25
- Audio Input Connections
  26
- SCA Input Connections
  27
- Composite Input Connection
  27
- Audio Monitor Connections
  28
- Pre-Emphasis Selection
  28
- Processor Bypass Option
  28
- Program Input Fault Time-Out
  29
- Remote I/O Connector
  29
Section 3-Operation

31
- Initial Power-Up Procedures
  32
- Power Switches
  34
- DC Breaker
  34
- Power Switch
  34
- Carrier Switch
  34
- Front Panel Bar-Dot Displays
  35
- Audio Processor Input
  35
- Highband and Wideband Display
  35
- Modulation Display
  35
- Processing Control
  36
- Stereo-Mono Switch
  36
- Input Gain Switches
  36
- RF Output Control
  37
- Digital Multimeter
  37
- Fault Indicators
  38
Section 4-Principles of Operation

39
- Part Numbering
  40
- Audio Processor Circuit Board
  41
- Stereo Generator Circuit Board
  42
- RF Exciter Circuit Board
  44
- Metering Circuit Board
  46
- Motherboard
  47
- Display Circuit Board
  48
- Voltage Regulator Circuit Board
  49
- Power Regulator Circuit Boards
  50
- RF Driver
  50
- RF Amplifier
  51
- Chassis
  51
- RF Output Filter & Reflectometer
  52
- Receiver Circuit Board Option
  52
Section 5-Adjustments and Tests

55
- Audio Processor Adjustments
  56
- Pre-Emphasis Selection
  56
- Pre-Emphasis Fine Adjustment
  56
- Stereo Generator Adjustments
  57
- Separation
  57
- Composite Output
  57
- 19 Khz Level
  57
- 19 Khz Phase
  57
- Frequency Synthesizer Adjustments
  58
- Frequency (Channel) Selection
  58
- Modulation Compensator
  58
- Frequency Measurement and Adjustment
  58
- FSK Balance Control
  58
- Metering Board Adjustments
  59
- Power Calibrate
  59
- Power Set
  59
- SWR Calibrate
  59
- PA Current Limit
  59
- Motherboard Adjustments
  60
- Display Modulation Calibration
  60
- Voltage Regulator Adjustments
  60
- Bias Set (RF Power Amplifier)
  60
- Performance Verification
  61
- Audio Proof-Of-Performance Measurements
  61
- De-Emphasis Input Network
  61
- Carrier Frequency
  62
- Output Power
  62
- RF Bandwidth and RF Harmonics
  62
- Pilot Frequency
  62
- Audio Frequency Response
  63
- Audio Distortion
  63
- Modulation Percentage
  63
- FM and am Noise
  63
- Stereo Separation
  63
- Crosstalk
  63
- Main Channel into Sub
  64
- Sub Channel into Main
  64
- 38 Khz Subcarrier Suppression
  64
- Additional Checks
  64
Section 6-Reference Drawings

65
- Views
  66
- Board Layouts and Schematics
  68
Section 7-Service and Support

94
- 7.1 Service
  95
- 7.2 24-Hour Support
  95
- 7.3 Spare Parts
  95
- Factory Service Instructions
  98
Appendix

99
- Transmitter Output Efficiency
  99
Glossary

101
Index

106

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