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Crown FM150 Manuals
Manuals and User Guides for Crown FM150. We have
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Crown FM150 manual available for free PDF download: User Manual
Crown FM150 User Manual (110 pages)
Broadcast transmitter
Brand:
Crown
| Category:
Transmitter
| Size: 3.36 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
Exciter
10
Translator
11
Satellator
12
Nearcasting
12
Transmitter/Exciter Specifications
13
Receiver Specifications
16
Safety Considerations
16
Dangers
16
Warnings
16
Cautions
16
Section 2-Installation
17
Operating Environment
18
Power Connections
18
AC Line Voltage Setting
18
Fuses
20
Battery Power
21
Frequency (Channel) Selection
21
Modulation Compensator
23
Receiver Frequency Selection
24
RF Connections
28
Audio Input Connections
29
SCA Input Connections
30
Composite Input Connection
30
Audio Monitor Connections
31
Pre-Emphasis Selection
31
Program Input Fault Time-Out
32
Remote I/O Connector
32
Section 3-Operation
35
Initial Power-Up Procedures
36
Power Switches
38
DC Breaker
38
Power Switch
38
Carrier Switch
38
Front Panel Bar-Dot Displays
39
Audio Processor Input
39
Highband and Wideband Display
39
Modulation Display
39
Input Gain Switches
40
Processing Control
40
Stereo-Mono Switch
40
RF Output Control
41
Digital Multimeter
41
Fault Indicators
42
Section 4-Principals of Operation
43
Part Numbering
44
Stereo Generator Circuit
45
Stereo Generator Section
46
Rf Exciter Circuit
48
Metering Circuit Board
49
Motherboard
50
Display Circuit Board
52
Voltage Regulator Circuit Board
53
Power Regulator Circuit Board
54
RF Driver/Amplifier (FM30)
54
RF Driver (FM150/FM300)
55
RF Amplifier
55
Chassis
56
RF Output Filter & Reflectometer
56
Receiver Circuit Board Option
57
Section 5-Adjustments and Tests
59
Audio Processor Adjustments
60
Pre-Emphasis Selection
60
Pre-Emphasis Adjustment
60
Stereo Generator Adjustments
60
Separation
60
Composite Output
61
Using a Modulation Monitor
61
19Khz Level
61
19Khz Phase
61
Frequency Synthesizer Adjustments
61
Frequency (Channel) Selection
61
Modulation Compensator
62
Frequency Measurement and Adjustment
62
Metering Board Adjustments
62
Power Calibrate
62
Power Set
62
SWR Calibrate
63
PA Current Limit
63
Display Modulation Calibration
63
Voltage Regulator Adjustment
64
Bias Set (RF Power Amplifier)
64
Performance Verification
65
Audio Proof of Performance Measurements
65
De-Emphasis Input Network
65
Carrier Frequency
66
Output Power
66
RF Bandwidth and RF Harmonics
66
Pilot Frequency
66
Audio Frequency Response
66
Audio Distortion
67
Modulation Percentage
67
FM and am Noise
67
Stereo Separation
67
Crosstalk
67
Main Channel into Sub
67
Sub Channel into Main
67
38Khz Subcarrier Suppression
68
Additional Checks
68
Spare Parts
96
Factory Service Instructions
99
Transmitter Output Efficiency
100
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