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RCS20 M:N Redundancy Switch Revision 15
Remote Operations MN-RCS20 and CD-RCS20
A–8
DIRECTLY-ADDRESSED EQUIPMENT
MULTI-DROP OVERRIDE ID
DMD15 Demodulator 21
DMD15 Modem 22
DVB3000/DVB3030/DM45 Video Modulator 23
RCS20 M: N Switch 24
RCS10 M: N Switch 25
RCS11 1:1 Switch 26
DMD2401/VHS-101/VME2401 Modem 27
Reserved for future equipment types 28-31
IMPORTANT
Multi-drop override IDs 01 or 02 can be used interchangeably to broadcast a message to a
DMD-3000/4000 Modem, DMD-4500/5000, or a DMD20 Modem. Comtech EF Data
recommends that the multi-drop override IDs be issued only during system configuration as a
bus test tool by experienced programmers, and that they not be included in run-time software. It
is also advantageous to consider the use of multiple bus systems where warranted by a
moderate to large equipment complement. Therefore, if an RCS20 switch is queried for its
equipment type identifier, it will return a "24."
A.1.6 Software Compatibility
The COMMSPEC, operating in conjunction within the RLLP shell, provides for full forward and backward
software compatibility independent of the software version in use. New features are appended to the end
of the DATA field without OPCODE changes. Older software simply discards the data as extraneous
information without functional impairment for backward compatibility.
If new device-resident or M&C software receives a message related to an old software version, new
information and processes are not damaged or affected by the omission of data.
The implementation of forward and backward software compatibility often, but not always, requires the
addition of new Opcodes. Each new function requires a new Opcode assignment if forward and backward
compatibility cannot be attained by other means.
When Radyne equipment is queried for bulk information (Query Mod, Query Demod, etc.) it responds by
sending back two blocks of data; a non-volatile section (parameters that can be modified by the user) and
a volatile section (status information). It also returns a count value that indicates how large the Non-
- M:N Redundancy Switch 1
- Blank Page 4
- Table of Contents 5
- Table of Contents - ii 6
- Table of Contents - iii 7
- Table of Contents - iv 8
- FIGURES 9
- Table of Contents - vi 10
- PREFACE 11
- Preface - ii 12
- Electrical Safety 13
- Related Documents 13
- Comtech EF Data Headquarters 13
- Warranty Policy 14
- Limitations of Warranty 14
- Exclusive Remedies 14
- Chapter 1. Introduction 15
- 1.3.2.1 Universal DDS20 18
- 1.3.3.1 70/140 IFS20 22
- Chapter 2. Installation 25
- 2.2.1 Test Data Sheet 26
- 2.3 Removal and Assembly 26
- 2.4 Installation Planning 26
- 2.4.1 Rack Information 26
- 2.4.3 Electrical 28
- 2.4.3.1 Grounding 28
- 2.4.3.2 Battery 29
- 2.4.3.3 Fuses 29
- 2.5 Connecting the RCS20 29
- 2.8 Storage 30
- 3.1 Overview 31
- 3.2 RCU20 Major Assemblies 31
- 3.2.2 Front Panel 31
- Chapter 4. User Interfaces 35
- 4.2.1 Modem Control Keys 36
- 4.2.1.1 MODEM MOD CONFIG 36
- 4.2.1.2 MODEM DEMOD CONFIG 36
- 4.2.1.3 MODEM INTFC CONFIG 36
- 4.2.5 Switch Status LEDs 38
- 4.2.6 Numeric Keypad 38
- 4.2.7 Soft Keys (S1 - S4) 38
- 4.3 Front Panel Screens 41
- 4.3.1.2 MODEM ADDRESSES 42
- Key Label Function 48
- Numeric Keypad 48
- 4.3.1.19 MOD FAULT DELAY 58
- 4.3.1.20 DEMOD FAULT DELAY 59
- 4.3.1.21 DEMOD AQU DELAY 60
- 4.3.2.13 SET DATE 75
- 4.3.2.14 SET TIME 76
- 4.3.2.22 CnC SWITCHING 82
- 4.3.3.3 EVENTS 89
- 4.3.3.4 NEXT EVENTS SCREEN 90
- 4.3.4 TEST Menu Tree 93
- 4.3.4.1 SWITCH SYSTEM TESTS 93
- 4.3.4.4 LAMP TEST 96
- 4.3.4.6 REMOTE PORT TEST 97
- 4.4 Remote Interface 97
- 4.5 Terminal Port Control 98
- 4.5.1 Terminal Interface 98
- 5.1 Overview 101
- 5.2.2 Chassis Ground 102
- 5.2.3 Expansion Slots 103
- 5.2.3.2.1 J1 106
- 5.2.3.2.2 J2 106
- 5.2.3.2.3 J3 107
- 5.2.3.2.5 J2 108
- 5.2.3.2.6 J3 108
- 5.2.3.2.4 J1 108
- Female Connectors 120
- G.703B DDO-B SYNC ST-B 121
- 5.4.2.4 J21 124
- BLANK PAGE 134
- Chapter 6. Maintenance and 135
- Troubleshooting 135
- 6.3 Active Major Alarms 136
- 6.4 Active Minor Alarms 137
- 7.1 General Specifications 139
- 7.2 IFS20 (70/140 MHz) 139
- 7.3 IFS20 (L-Band) 140
- 7.4 Terrestrial Interfaces 140
- 7.5 Options 141
- 7.6 Power and Environmental 141
- 7.8 Complementary Products 142
- A.1.1 Protocol Structure 143
- A.1.2 Protocol Wrapper 144
- A.1.5 Collision Avoidance 148
- A.1.8 RLLP Summary 152
- Configuration 168
- Appendix B. System Cabling 179
- B.2 RCS20 Interconnects 180
- Setup and Configuration 199
- 480 • 333 • 2200 PHONE 202
- • 333 • 2161 FAX 202
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