Crown CM-150 manuals

Crown CM-150 User Manual (110 pages)

Brand: Crown | Category: Microphones | Size: 3.20 MB |

English

Table of contents

User's Manual

1

Important Notices

2

Contents

3

1-1 Getting Acquainted

7

1.1 Your Transmitter

8

1-3 Getting Acquainted

9

• RF Exciter

9

• Metering

9

• Low-Pass filter

9

1.2.1 Stand-Alone

10

1.2.2 Backup

10

1.2.3 Exciter

10

1.2.4 Translator

11

1.2.5 Satellator

12

1.2.6 Nearcasting

12

1-7 Getting Acquainted

13

1-9 Getting Acquainted

15

1.4 Receiver Specifications

16

1.5 Safety Considerations

16

Section 2—Installation

17

2.1 Operating Environment

18

2.2 Power Connections

18

2-3 Installation

19

2.2.3 Battery Power

21

= 88.10 MHz

22

= 107.90 MHz

22

2-7 Installation

23

(Continued on next page)

25

2-9 Installation

25

2-11 Installation

27

2.5 RF Connections

28

2.6 Audio Input Connections

29

2.7 SCA Input Connections

30

2.10 Pre-emphasis Selection

31

2.12 Remote I/O Connector

32

Pin Number Function

33

Section 3—Operation

35

Illustration 3–1 DC Breaker

36

3-3 Operation

37

3.2 Power Switches

38

3.3.1 Audio Processor Input

39

3.3.3 Modulation Display

39

3.4 Input Gain Switches

40

3.5 Processing Control

40

3.6 Stereo-Mono Switch

40

3.7 RF Output Control

41

3.8 Digital Multimeter

41

3.9 Fault Indicators

42

4-1 Principles of Operation

43

4.1 Part Numbering

44

4-3 Principles of Operation

45

4-5 Principles of Operation

47

4.3 RF Exciter Circuit

48

4.5 Metering Circuit

49

4.6 Motherboard

50

4-9 Principles of Operation

51

4.7 Display Circuit Board

52

4-11 Principles of Operation

53

4-13 Principles of Operation

55

4.13 Chassis

56

4-15 Principles of Operation

57

5-1 Adjustments and Tests

59

5.2.1 Separation

60

5.2.2 Composite Output

61

5.2.3 19–kHz Level

61

5.2.4 19–kHz Phase

61

5.4 Metering Adjustments

62

5.4.3 SWR Calibrate

63

5.4.4 PA Current Limit

63

5.10 Carrier Frequency

66

5.11 Output Power

66

5.13 Pilot Frequency

66

5.15 Audio Distortion

67

5.16 Modulation Percentage

67

5.17 FM and AM Noise

67

5.18 Stereo Separation

67

5.19 Crosstalk

67

5.21 Additional Checks

68

Section 6—Reference Drawings

69

6.1 Views

70

6-3 Adjustments and Tests

71

FM30/150/300 User’s Manual

74

Board Layouts and Schematics

74

201409F-SCH

75

Illustration 6-6 Motherboard

76

STEREO GENERATOR

77

AUDIO PROCESSOR

77

SCH, UNIVERSAL MOTHER BOARD

79

201497F-SCH

79

201497F-SCH A

79

FM POWER REGULATOR

86

200915F-SCH

86

PA OUTPUT

88

PA INPUT

88

FM RF AMPLIFIER

88

201551F-SCH

88

FM LOW PASS FILTER #2

90

103209-SCH

90

SCH, FM RF DRIVER

92

Q43310-4F

92

Input Feedthru (Top Side)

93

Service and Support 7-1

95

7.1 Service

96

7.2 24–Hour Support

96

7.3 Spare Parts

96

Factory Service Instructions

99

Appendix

100

Glossary

103

Symbols

107

S (continued)

110

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