Comtech-ef-data SMS-458B User Manual Page 39
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SMS-458B Modem Protection Switch Revision 2
Operation MN/SMS458B.IOM
3–3
3.3 Keypad and LCD Display
The keypad and LCD display provide an interface for the local user to access the menus
that configure and operate the switch. The keypad includes:
• Numbers 0 through 9
• Decimal
• [ENT]
• [F1] and [F2]
• [NEXT]
• [PREV]
The last four keys specified control the hierarchical menu structure. Menus provide for
local setup, configuration, and operation. Each menu contains a portion of the switch
control or setup algorithm. Only a limited knowledge of the switch is required, as the
menus are self-prompting and all options are displayed.
The base levels of this tree-structured front panel menu are as follows:
• ID menu displayed at power-on
• SYSTEM and MODEM SETUP menu
• MODEM CONFIGURATION menu
• FAULT menu
• MODE menu
• STATUS display
- SMS-458B 1
- Customer Support 4
- Table of Contents 5
- Figures 10
- Related Documents 11
- Conventions and References 11
- Cautions and Warnings 11
- About this Manual 11
- Metric Conversion 12
- Trademarks 12
- ELECTRICAL SAFETY 13
- Installation 14
- Preface MN/SMS458B.IOM 15
- Warranty Policy 16
- Limitations of Warranty 16
- Exclusive Remedies 16
- Disclaimer 16
- Chapter 1. INTRODUCTION 17
- 1.2 Purpose and Function 18
- Introduction MN/SMS458B.IOM 19
- 1.3 Description 20
- 1.4 Major Assemblies 24
- 1.5 System Requirements 24
- 1.6 Specification 25
- Chapter 2. INSTALLATION 27
- Installation MN/SMS458B.IOM 28
- 2.3 External Connections 30
- 2.3.1 Data I/O 32
- 2.3.12 Ground 36
- Chapter 3. FRONT PANEL 37
- 3.2 LED Indicators 38
- 3.3 Keypad and LCD Display 39
- Operation MN/SMS458B.IOM 40
- Figure 3-2. Display Map 41
- 3.4 System and Modem Setup 43
- 3.4.2 System Setup 43
- 3.4.2.1 Time and Date Menu 44
- 3.4.2.7 Modem Addresses Menu 45
- 3.4.3 Modem Setup 46
- 3–11 47
- 3.4.3.4 Demodulator Delay 48
- 3.4.3.5 Modulator Delay 48
- 3.4.4 Modem Configuration 49
- 3.4.5 Operation Modes 51
- 3.4.5.1 Bypass Mode 51
- 3.4.5.2 Auto Mode 51
- 3.4.5.3 Local Mode 53
- 3.4.5.4 Remote Mode 54
- 3.4.6 Faults 54
- 3–19 55
- 3–21 57
- 3.4.6.3 M:N Faults 58
- 3.4.6.4 Battery Faults 59
- Chapter 4. THEORY OF 61
- 4.1.2.2 Remote Baud Rate 63
- 4.1.2.3 Remote Address 63
- 4.1.2.5 Battery 64
- 4.1.4.1 Scope 66
- 4.1.4.2 General 66
- 4.1.4.3 Command Structure 66
- 4.1.5.1 Controller Fault 70
- 4.1.5.2 M:N Fault 70
- 4.2 Interface Switches 71
- 4.2.1.1 General Description 71
- 4.2.1.3 Connector Pinout 73
- 4–15 75
- 4.3 Address Decoder/Driver 76
- 4.3.1 General 76
- 4.3.2 Specifications 77
- 4.4 IF Switch Driver 79
- 4.6 IF Switch 81
- 4.6.1 General 81
- 4.6.2 Specifications 81
- Figure 4-9. IF Switch 82
- 4.7 Online Telemetry 83
- 4.7.1 General 83
- 4.7.2 Specifications 83
- CONTROL BUS 84
- 4.8.1 General 85
- 4.8.2 Specifications 85
- 4.8 Power Supply 85
- Chapter 5. MAINTENANCE 87
- 5.1.4 M:N Faults 88
- 5.1.5 Battery Faults 89
- 5.2 Fault Isolation 89
- 5.2.1 Modulator Operation 89
- 5.2.2 Demodulator Operation 90
- 5.2.3 M:N Operation 91
- 5.2.4 Battery 92
- 5.3 Module Replacement 93
- 5.3.1 General 93
- 5.3.2 Power Supply 93
- Maintenance MN/SMS458B.IOM 94
- Appendix A. CABLING 97
- CONFIGURATIONS 97
- A.1.1 Equipment Inspection 98
- A.1.1.1 Included Parts 98
- G.703 Data Interface 100
- Interface 103
- Data Interface 104
- SDM-9000 PRIME 1-4 and Backup 106
- Appendix B. REMOTE 109
- OPERATION 109
- B.3 Start Character 110
- B.4 Device Address 110
- B.5 Command/Responses 111
- B.12.1 Configuration Status 115
- B.13 Operational Commands 117
- Load Modem Configurations 118
- Glossary 121
- Index MN/SMS458B.IOM 124
- METRIC CONVERSIONS 125
- Units of Length 125
- Temperature Conversions 125
- Units of Weight 125
- 480 • 333 • 2200 PHONE 126
- 480 • 333 • 2161 126
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