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Manuals and User Guides for Comtech EF Data CRS-280. We have
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Comtech EF Data CRS-280 manual available for free PDF download: Installation And Operation Manual
Comtech EF Data CRS-280 Installation And Operation Manual (70 pages)
70/140 MHz IF Switch for 1:N Redundancy, L-Band IF Switch for 1:N Redundancy
Brand:
Comtech EF Data
| Category:
Switch
| Size: 3.78 MB
Table of Contents
Revision History
2
Table of Contents
3
Preface
7
About this Manual
7
Related Documents
7
Conventions and References
8
Patents and Trademarks
8
Warnings, Cautions, and Notes
8
Recommended Standard Designations
9
Metric Conversion
9
Electrical Safety
9
Electrical Safety Notice
9
Electrical Safety Compliance
9
Fuses
10
Environmental
10
Installation
10
Telecommunications Terminal Equipment Directive
11
Federal Communications Commission (FCC)
11
International Symbols
11
EMC (Electromagnetic Compatibility)
11
EN55022 - 1997 Compliance
11
EN55024 - 1998 Compliance
11
Product Support
12
Comtech EF Data Headquarters
12
Warranty Policy
13
Limitations of Warranty
13
Exclusive Remedies
14
Chapter 1. Introduction
15
Overview
15
Figure 1-1. CRS-280 70/140 Mhz if Switch for 1:N Redundancy
15
Figure 1-2. CRS-280L L-Band if Switch for 1:N Redundancy
15
Table 1-1. if Switch Compatibility Table
16
Compatibility
17
Figure 1-3. 1:10 Redundancy W/Crs-280L - System-Level Block Diagram
17
Physical Description
18
Front Panel
18
Figure 1-4. CRS-280 Front Panel
18
Figure 1-5. CRS-280L Front Panel (1:10 Configuration Shown)
18
Rear Panel
19
Figure 1-6. CRS-280 Rear Panel
19
Figure 1-7. CRS-280L Rear Panel
19
Dimensional Envelope
20
Figure 1-8. CRS-280 (70/140 Mhz) if Switch Dimensional Envelope
20
Figure 1-9. CRS-280L (L-Band) if Switch Dimensional Envelope
21
Summary of Specifications
22
CRS-280L Typical Insertion Loss Graphs
24
Figure 1-10. Graph 1 - Downlink Input to Rx Output
24
Figure 1-11. Graph 2 - Downlink Input to Backup Rx Output
25
Figure 1-12. Graph 3 - Backup Input to Selected Uplink Output
26
Figure 1-13. Graph 4 - Tx Input to Associated Uplink Output
27
Chapter 2. Installation
29
Unpacking and Inspection
29
Mounting
30
Chapter 3. Connector Pinouts
31
Connector Overview
31
CRS-280 Connector Overview
32
Figure 3-1. CRS-280 Connectors
32
Table 3-1. CRS-280 External Connectors (Front and Rear Panel)
33
CRS-280L Connector Overview
34
Figure 3-2. CRS-280L Connectors
34
Table 3-2. CRS-280L External Connectors (Front and Rear Panel)
35
Front Panel Connectors
36
Rear Panel Control Connectors
36
J1 CRS Control Interface Connector, DB-25F
36
CRS-280L Switch Control Interface Connectors
37
J1 CRS Control Interface Connector, DB-25F
37
J2 SMS Control Interface Connector, DB-15M
37
Power / Ground Connections
38
Alternating Current (AC) Power Connectors
38
Direct Current (DC) Power Connectors (Optional)
38
Ground Connector
39
Chapter 4. Cables and Connections
42
Control Cable Connections
42
SMS-7000 1:8 Modem Protection Switch Control Cable Connection
43
CRS-400 1:8 Redundancy Switch Control Cable Connection
43
CRS-300 1:N Redundancy Switch Control Cable Connection
43
CRS-500 M:N Redundancy System Control Cable Connection
44
Figure 4-1. SMS-7000 to CRS-280L Control Cable Connection
45
Figure 4-2. CRS-400 to CRS-280L Control Cable Connection
46
Figure 4-3. CRS-300 to CRS-280 Control Cable Connection
47
Figure 4-4. CRS-300 to CRS-280L Control Cable Connection
48
Figure 4-5. CRS-500 to CRS-280 Control Cable Connection
49
Figure 4-6. CRS-500 to CRS-280L Control Cable Connection
50
Cable Connections
51
CRS-280 if Cable Connections
51
CRS-280L L-Band if Cable Connections
51
L-Band if Cable Characteristics
51
L-Band Switch-To-Modem Cabling Requirements
51
L-Band Uplink/Downlink Cable Connections
52
Chapter 5. Redundancy System Configuration / Operation
53
Overview
53
CRS-280L Input Power Cord Connections
53
1:N Redundancy System Power-Up Sequence
54
CRS-280L Operations with the CRS-500 M:N Redundancy System
54
Appendix A. Cable Drawings
55
Introduction
55
Control Interface Cables
56
SMS-7000 Control Cable
57
Figure A-1. CRS-280L SMS-7000 Data Switch Unit (DSU) Control Cable (CEFD P/N CA/5343-1
57
CRS-400/CRS-300 Control Cable
58
Figure A-2. CRS-280L CRS-400, CRS-300 Control Cable (CEFD P/N CA/WR0066
58
CRS-500 Control Cable
59
Figure A-3. CRS-280/280L CRS-500 Data Switch Unit (DSU) Control Cable (CEFD P/N CA-0021666
59
IF Interface Cable, Type 'N' 50Ω
60
Figure A-4. Type 'N' 50Ω if Coax Cable (CEFD P/N CA/RF10453-X
60
Appendix B. Crs-280L Power Supply Module Replacement
61
Introduction
61
Figure B-1. CRS-280L Rear Panel (Shown with PL/10207-1 AC Modules
62
Power Supply Module Removal Procedure
63
Power Supply Module Installation Procedure
65
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