Comtech EF Data CDM-550T manuali

Comtech ef data CDM-550T Manuale Utente (164 pagine)

Marchio: Comtech-ef-data | Categoria: Apparecchiature | Dimensione: 3.04 MB |

Inglese

Indice

Satellite Modem

1

CDM-550T

3

Table of Contents

5

Figures

13

Preface

15

Preface MN/CDM550T.IOM

16

Electrical Safety

17

Environmental

17

Installation

17

Warranty Policy

19

Limitations of Warranty

19

Exclusive Remedies

20

Chapter 1. INTRODUCTION

21

1.2.1 AUPC

22

1.2.2 Software

22

1.2.3 Verification

22

1.2.4 Data Interfaces

22

1.3 Options

23

1.4 Compatibility

23

1.5 Manual Release Notes

23

Introduction MN/CDM550T.IOM

24

Chapter 2. INSTALLATION

25

2.3 Configuration

26

2.4 Select Internal IF Loop

26

2.5 Connect External Cables

26

Chapter 3. FUNCTIONAL

27

DESCRIPTION

27

Receive Data

28

Chapter 4. PHYSICAL

29

5.1 Connector Overview

33

Vacuum Fluorescent Display

37

LED Indicators

37

6.2 Menu Trees

39

6.2.1 Opening Screen

40

6.2.3 SELECT: CONFIG

41

(CONFIG: TX, FEC)

43

6–10

46

6–14

50

(CONFIG: RX) CLK (Clocking)

52

6.2.3.4.1 (CONFIG: LOCAL)

56

6.2.3.4.2 (CONFIG: REMOTE)

56

6–22

58

SEL TX-AIS ALARM MASK:

60

ACTIVE MASKED(PRESS ENT)

60

SELECT IF IMPEDANCE:

60

50 OHMS 75 OHMS (ENTER)

60

6.2.4 SELECT: TEST

61

Figure 6-4. Loopback Modes

62

6–28

64

6.2.6.1 (MONIT:) ALARMS

66

TX TRAFFIC: NO CLOCK

67

DETECTED FROM INTERFACE

67

RX:EbNo=05.7dB dF=+11.7k

67

BER=3.4E-9 BUF=50 AGC=24

67

6–32

68

(MONIT: STATS) VIEW

69

(MONIT: STATS) CONFIGURE

70

6.2.6.4 (MONITOR) AUPC

71

6.2.7.1 (STORE/LD) STORE

71

6.2.7.2 (STORE/LD) LOAD

72

6–38

74

Chapter 7. FORWARD ERROR

75

CORRECTION OPTIONS

75

7.3 Sequential

76

Decoding

82

Sequential

83

1024 kbps

84

2048 kbps

85

Viterbi with

86

RS 220,200

86

Outer Code

86

Differential

89

Encoding

89

Chapter 8. OFFSET QPSK

91

OPERATION

91

MN/CDM550T.IOM

92

Chapter 9. RS-232 DATA

93

INTERFACE - ASYNCHRONOUS

93

9.4 Other Considerations

94

9.4.1 Baud Rate Accuracy

94

Chapter 10. CLOCKING MODES

95

10–2

96

10–4

98

Figure 10-2 . RX Clock Modes

99

10–6

100

Chapter 11. EDMAC CHANNEL

101

11.2 M&C Connection

102

11.3 Setup Summary

103

POWER CONTROL

105

12.2.1 Target Eb/No

106

12.2.2 Max Range

106

12.2.3 Alarm

106

12.2.4 Demod Unlock

107

12.3 Compensation Rate

107

12.4 Monitoring

107

Chapter 13. FLASH UPGRADING

109

14.1 MODULATOR

111

14.2 Demodulator

113

14.4 Data Interfaces

114

14.5 Miscellaneous

115

14.6 Async Overhead

115

14.7 Approvals

115

Chapter 15. REMOTE CONTROL

117

15.3 RS-232

118

15.4 Basic Protocol

118

15.5 Packet Structure

118

15.5.1 Start Of Packet

119

15.5.2 Address

119

15.5.3 Instruction Code

119

15.5.5 Message Arguments

120

15.5.6 End Of Packet

121

15.6.4 Remote Queries

136

15.6.5 Bulk Commands

139

A.1 Overview

141

Cable Drawings

144

MN/CDM550T.IOM

144

Appendix B. E

145

MEASUREMENT

145

Appendix C. ASYNC OVERHEAD

149

• • •

150

IMPORTANT

153

D.2 Menu Trees

154

D.2.2 SELECT: ODU

155

METRIC CONVERSIONS

163

Units of Length

163

Temperature Conversions

163

Units of Weight

163

480 • 333 • 2200 PHONE

164

• 333 • 2161 FAX

164

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