Comtech EF Data CDM-700 Especificaciones Pagina 24
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CRS-300 1:10 Redundancy Switch Revision 16
Introduction MN/CRS300.IOM
1–2
The CRS-300 1:10 Redundancy Switch (referred to throughout this manual as the Switch)
provides fully automatic protection of traffic circuits in the case of equipment failure. The user
can configure the CRS-300 to back up (replace) a Traffic modem when a Unit Fault and/or a
Tx/Rx traffic Fault occurs.
Intended for hub applications, the CRS-300 is compatible for use with the Comtech EF Data
Modems specified in Table 1-1. While the Switch is capable of controlling any of these specified
modems, note that it is important that only one type of modem may be connected within a given
Switch system; this is because the redundant modem must operate identically to the configured
traffic modem.
A key feature of the CRS-300 architecture is its ability to allow the redundant modem to ‘bridge’ a
traffic modem. The Switch automatically configures the redundant modem to match the bridged
modem’s configuration. The Switch also copies the bridged modem’s terrestrial transmit clock/data
and routes it to the redundant modem. When using the CRS-280/280L, it additionally routes the
bridged modem’s Rx IF. Because this live traffic is used at all times to verify performance, no
external test equipment is needed to determine the health of the redundant modem.
Construction features: The CRS-300 is modular in construction – all replaceable modules insert
into slots in the back panel. This includes the controller, Redundant Modem Interface (RMI),
Traffic Modem Interfaces (TMIs), and Power Supply Units (PSUs).
Because power consumption is below 30 watts for a fully populated Switch, no fan cooling is required.
Key Reliability Features: The CRS-300 incorporates the following key reliability features:
• Twin, independent, AC or DC power supplies.
• Traffic Modems with differing data types can all be supported by the Redundant Modem
– the exception to this is the CDM-Qx/QxL and, with some limitations, the CDM-625.
• Primary traffic paths are maintained, error-free, when power is removed.
• TMIs can be completely removed from the CRS-300, with cables still attached, and
traffic is not interrupted or affected.
• RMI and/or TMIs can be replaced without disturbing other traffic circuits.
Interfaces: The CRS-300 supports all of the modems’ available interface types, which include
EIA-530/-422, V.35, Sync EIA-232, ASI, Balanced or Unbalanced G.703, LVDS, Single-port
Ethernet Bridge Mode, and HSSI.
Ease of Connection: Connection to the traffic modems and the redundant modem is remarkably
easy – rack cabling is simplified and the number of potential failure points is reduced.
For the CDM-570/570L, CDM-600/600L, or CDM-625: When using the multi-protocol
interface, only a single cable – carrying all data signals, alarm information and the serial remote
control interface – is required for each modem.
If the G.703 interfaces are used: One additional cable is required.
For the CDM-Qx/QxL: These modems require an additional RS-485 multi-drop cable from the
Switch to all modems to provide remote control interface capability.
For EIA-232/-485 M&C User connections: A direct user-to-modem serial EIA-232/-485
communication connection is not permissible when connected to the CRS-300. The user must
instead connect to the DB-9 "Remote" connector on the CRS-230 System Controller (installed on
- CRS-300 1
- Table of Contents 5
- Figures 13
- PREFACE 17
- Preface MN/CRS300.IOM 18
- EN55024 - 1998 Compliance 19
- Safety Compliance 19
- EN 60950 19
- Low Voltage Directive (LVD) 19
- Warranty Policy 20
- Limitations of Warranty 20
- Exclusive Remedies 21
- Customer Support 22
- Online Customer Support 22
- Chapter 1. INTRODUCTION 23
- Introduction MN/CRS300.IOM 24
- 1.2 CRS-300 Compatibility 26
- 1.4.1 Front Panel 29
- 1.4.2 Rear Panel 30
- SLM-5650/5650A 33
- 1.6.5 Dimensional Envelopes 41
- Chapter 2. INSTALLATION 45
- Installation MN/CRS300.IOM 46
- Chapter 4 61
- CABLES AND CONNECTIONS 61
- 4.5.2 Carrier-in-Carrier 82
- (CnC) Data Connections 82
- Cable Connection Example 83
- Note 1 89
- Notes 2,3 89
- Emulation Mode 96
- MPORTANT 100
- Chapter 3. ETHERNET NETWORK 112
- CONFIGURATIONS 112
- Chapter 3. ETHERNET 127
- NETWORK CONFIGURATIONS 127
- IMPORTANT 133
- 4.11 IF Cable Connections 139
- 4.11 IF Cable Connections 140
- IMPOR TANT 145
- 5.2 Modem Configuration 146
- 5.2.1 Modem Power 146
- 5.2.2.1 Flash Updating 146
- Processor (NP) Interface 150
- Slot 1 Mod 152
- Slot 2 Demod 152
- Slot 3 Mod 152
- Slot 4 Demod 152
- Tables 5-2 throu 155
- Rev. F. and later versions; 158
- Rev. D and later versions 158
- CA and TA 161
- 5.5 Switch Configuration 162
- 5.5.1 Switch Power 162
- 5.5.2 Flash Updating 163
- 5.5.2.1.1 Flash Update Help 165
- 5.5.3.4 Set Holdoff Period 167
- 5.5.3.5 Set Alarm Masking 168
- User Clock/Data Interface: 174
- IDR ESC Interface connector 174
- TMI User Data Interface: 174
- ASI connectors 174
- Unbalanced G.703 connectors 176
- Quad E1 connectors 179
- Chapter 7. FRONT PANEL 181
- OPERATION 181
- 7.1.4 Opening Screen 185
- 7.2 CRS-300 Menu Structure 186
- 7.4.1 CONFIG: MANUAL 188
- 7.4.3 CONFIG: OPTIONS 189
- 7.4.4 CONFIG: REMOTE 191
- 7.5.1 INFO: S/N 193
- 7.5.2 INFO: ID 193
- 7.5.3 INFO: SETUP 193
- 7.5.4 INFO: IF-SWITCH 193
- 7.6 SELECT: MONITOR 194
- 7.6.1 MONITOR: STATUS 194
- 7.6.2 MONITOR: SW-ALARM 195
- 7.6.5 MONITOR: IO 198
- 7.7.1 STORE/LD: STORE 199
- 7.7.2 STORE/LD: LOAD 199
- 7.8 SELECT: UTILITY 200
- 7.8.3 UTILITY: SWITCH-ID 200
- 7.8.4 UTILITY: TEST 201
- 7.8.5 UTILITY: RELAY 201
- Appendix A. CABLE DRAWINGS 203
- A.3 Control Cables 207
- USED WITH CRS-300 Æ … 218
- Chp. 4 FIG USED FOR (TYPE) 218
- Chapter 4.7 230
- CDM-700 Modem Connections 230
- A.4.14 IF Cable, BNC 50Ω 232
- A.4.16 Multi-drop CnC 234
- Appendix B. ADDRESSING 239
- SCHEME INFORMATION 239
- B.2 Switch Addresses 240
- 1:1 internal 243
- Slave mode is available 243
- 1.6.2 or later 243
- B.3.1 Setting Up Modems 249
- B.4 M&C Applications 250
- Appendix C. REMOTE CONTROL 251
- C.3 EIA-232 252
- C.4 Basic Protocol 252
- C.5 Packet Structure 253
- C.5.1 Start of Packet 253
- C.5.2 Target Address 253
- C.5.3 Address Delimiter 254
- C.5.4 Instruction Code 254
- C.5.7 End of Packet 256
- 480 • 333 • 2200 PHONE 266
- • 333 • 2161 FAX 266
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