Comtech EF Data CRS-170A User manual

IMPORTANT NOTE: The information contained in this document supersedes all previously published
information regarding this product. Product specifications are subject to change without prior notice.
Part Number MN/CRS170A.IOM / CD-CRS170A Revision 14
CRS-
170A
L-Band 1:1 Redundancy Switch
Installation and Operation Manual
Accessory Product for use only with Comtech EF Data CDM-625A, CDM-
625,
H64/H32/H16/H8 Heights Remote Gateways, CDM-850, CDM-840, CDM-
760,
CDM-750, CDM-570AL, CDM-570L, CDM-710GL, CDM-710, CDM-
700,
CDM-600L (CLM-9600L), and SDM-300L3 Modems
(Modem Firmware and Hardware Requirements Apply)

Copyright © Comtech EF Data, 2017. All rights reserved. Printed in the USA.
ComtechEFData,2114 West 7th Street, Tempe, Arizona 85281 USA, 480.333.2200, FAX: [phone]
Part Number MN/CRS170A.IOM / CD-CRS170A
Revision 14
CRS-
170A
L-Band 1:1 Redundancy Switch
Installation and Operation Manual
Accessory Product for use only with Comtech EF Data CDM-625A, CDM-625,
H64/H32/H16/H8 Heights Remote Gateways, CDM-850, CDM-840, CDM-760,
CDM-750, CDM-570AL,CDM-570L, CDM-710GL, CDM-710, CDM-700,
CDM-600L (CLM-9600L), and SDM-300L3 Modems
(Modem Firmware and Hardware Requirements Apply)

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iii
TABLE OF CONTENTS
TABLE OF CONTENTS ........................................................................................................... III
TABLES .................................................................................................................................VIII
FIGURES................................................................................................................................VIII
PREFACE...............................................................................................................................XIII
About this Manual ...................................................................................................................................xiii
Related Documents................................................................................................................................xiii
Conventions and References...................................................................................................................xiv
Patents and Trademarks.........................................................................................................................xiv
Warnings, Cautions and Notes ..............................................................................................................xiv
Examples of Multi-Hazard Notices.......................................................................................................xiv
Recommended Standard Designations..................................................................................................xiv
Safety and Compliance.............................................................................................................................xv
Electrical Safety and Compliance...........................................................................................................xv
Electrical Installation..............................................................................................................................xv
Operating Environment ..........................................................................................................................xv
Equipment Connection...........................................................................................................................xv
European Union Radio Equipment and Telecommunications Terminal Equipment (R&TTE) Directive
(1999/5/EC) and EN 301 489-1.............................................................................................................xvi
European Union Electromagnetic Compatibility (EMC) Directive (2004/108/EC).........................xvi
European Union Low Voltage Directive (LVD) (2006/95/EC).......................................................xvii
European Union RoHS Directive (2002/95/EC)..............................................................................xvii
European Union Telecommunications Terminal Equipment Directive (91/263/EEC)....................xvii
CE Mark...........................................................................................................................................xvii
Product Support......................................................................................................................................xvii
Comtech EF Data Headquarters..........................................................................................................xviii
Warranty Policy.....................................................................................................................................xviii
Limitations of Warranty ......................................................................................................................xviii
Exclusive Remedies...............................................................................................................................xix
CHAPTER 1. INTRODUCTION ........................................................................................ 1–1
1.1 Overview.....................................................................................................................................1–1
1.2 Physical Features .......................................................................................................................1–3
1.2.1 Modem Side Features..............................................................................................................1–3

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1.2.2 Top and Antenna Side Features...............................................................................................1–4
1.3 Functional Description ..............................................................................................................1–5
1.3.1 Switch / Modem Operation......................................................................................................1–5
1.3.2 1:1 IP Redundancy Data Switching.........................................................................................1–7
1.3.2.1 Managed Switch Mode for CDM-625A or CDM-625, Heights Remote Gateway,
Advanced VSAT CDM-850 or CDM-840, CDM-760, CDM-750, CDM-710GL, CDM-710, or
CDM-700 ........................................................................................................................................1–7
1.3.2.2 Router Mode For CDM-625A or CDM-625 WITH Optional IP Packet Processor ......1–10
1.3.2.3 Managed Switch or Router Modes for CDM-570L/AL WITH Optional IP Module or
Packet Processor.............................................................................................................................1–12
1.3.3 CRS-170A Operation with CDM-600L (CLM-9600L) and SDM-300L3 Modems .............1–15
1.3.3.1 Operation with CDM-600L (CLM-9600L) Modems and CRS-150 Switch.................1–15
1.3.3.2 Operation with SDM-300L3 Modems and SMS-301 Switch.......................................1–17
1.4 Summary of Specifications......................................................................................................1–18
CHAPTER 2. INSTALLATION.......................................................................................... 2–1
2.1 Unpack and Inspect the Shipment............................................................................................2–1
2.2 Mount the Unit...........................................................................................................................2–2
CHAPTER 3. SWITCH CONNECTORS AND PINOUTS .................................................. 3–1
3.1 Cabling Connection Types........................................................................................................3–1
3.1.1 Coaxial Cable Connections .....................................................................................................3–1
3.1.1.1 Type ‘BNC’ ....................................................................................................................3–2
3.1.1.2 Type ‘TNC’.....................................................................................................................3–2
3.1.1.3 Type ‘N’..........................................................................................................................3–2
3.1.1.4 Type ‘F’ ..........................................................................................................................3–2
3.1.1.5 Type ‘SMA’ (Subminiature Version ‘A’).......................................................................3–2
3.1.2 D-Subminiature Cable Connections........................................................................................3–3
3.1.3 RJ-45, RJ-48 Cable Connections.............................................................................................3–3
3.2 CRS-170A User Connectors......................................................................................................3–4
3.2.1 Modem Side Connectors .........................................................................................................3–4
3.2.1.1 IF Connectors (50ΩType ‘N’) .......................................................................................3–4
3.2.1.2 J3 | Control Connector (Top) – Modem ‘A’ (DB-9F).....................................................3–5
3.2.1.3 J4 | Control Connector (Bottom) – Modem ‘B’ (DB-9F)...............................................3–5
3.2.2 Antenna Side Connectors ........................................................................................................3–6
3.2.2.1 RF Connectors (50ΩType ‘N’)......................................................................................3–6
3.2.2.2 Ground Stud....................................................................................................................3–6
CHAPTER 4. MODEM AND SWITCH CONFIGURATION................................................ 4–1
4.1 Overview.....................................................................................................................................4–1
4.2 Configure the CDM-625A or CDM-625 for 1:1 Redundancy................................................4–3

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4.2.1 CDM-625A or CDM-625 Remote User M&C Ethernet Interface..........................................4–3
4.2.1.1 For CDM-625A or CDM-625s without the Optional IP Packet Processor.....................4–3
4.2.1.2 For CDM-625A or CDM-625s Equipped With the Optional IP Packet Processor.........4–4
4.2.2 Configure CDM-625A or CDM-625 Carrier-in-Carrier® for Redundancy Operation...........4–4
4.3 Heights Remote Gateways in 1:1 Redundancy........................................................................4–5
4.4 Advanced VSAT CDM-850 or CDM-840 Operation in 1:1 Redundancy.............................4–7
4.5 CDM-760 or CDM-750 Operation in 1:1 Redundancy ..........................................................4–9
4.6 Configure the CDM-570Ls or CDM-570ALs for 1:1 Redundancy .....................................4–11
4.6.1 CDM-570L or CDM-570AL Non-IP Redundancy Configuration........................................4–12
4.6.2 IP Redundancy Configuration...............................................................................................4–13
4.7 Configure the CDM-710GLs, CDM-710s, or CDM-700s for 1:1 Redundancy..................4–15
4.7.1 Non-IP Redundancy Configuration.......................................................................................4–16
4.7.2 IP Redundancy Configuration...............................................................................................4–16
4.8 CDM-600L (CLM-9600L) Operation in 1:1 Redundancy ...................................................4–17
4.9 SDM-300L3 Operation in 1:1 Redundancy...........................................................................4–17
4.10 CRS-170A DIP Switch Settings ..............................................................................................4–19
CHAPTER 5. CABLES AND CONNECTIONS ................................................................. 5–1
5.1 Overview.....................................................................................................................................5–1
5.2 Common CRS-170A 1:1 Redundancy Control / IF Interface Cabling Kits.........................5–3
5.3 Cabling to the CDM-625A or CDM-625..................................................................................5–5
5.3.1 CRS-170ACDM-625A or CDM-625 Control and IF Interface Connections Using Cabling
Kit KT-0000160 ...................................................................................................................................5–5
5.3.1.1 Modem-to-Switch Control Interface Connection ...........................................................5–6
5.3.1.2 Modem-to-Switch IF Interface Connection....................................................................5–7
5.3.1.2.1 Modem-to-Switch L-Band (Rx/Tx) IF Interface Connection...................................5–7
5.3.1.2.2 Modem-to-Switch L-Band Tx / 70/140 MHz Rx IF Interface Connection..............5–8
5.3.2 Modem-to-User Data Interface Connections and Examples ...................................................5–9
5.3.2.1 Modem-to-User Non-IP Data Interface Connections and Examples..............................5–9
5.3.2.1.1 EIA-422/232 Interface Example.............................................................................5–10
5.3.2.1.2 HSSI Interface Example.........................................................................................5–10
5.3.2.1.3 Quad E1 Interface Example....................................................................................5–11
5.3.2.1.4 G.703 Balanced Interface Example........................................................................5–12
5.3.2.1.5 G.703 Unbalanced Interface Example....................................................................5–12
5.3.2.1.6 ASI Interface Example ...........................................................................................5–13
5.3.2.1.7 Overhead Interface Example ..................................................................................5–13
5.3.2.1.8 Engineering Service Channel (ESC) Interface Example........................................5–14
5.3.2.2 Modem-to-User IP (10/100 Ethernet) Interface Examples...........................................5–15
5.3.2.2.1 Data Interface Connections Using IP Sub-Mux .....................................................5–15

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5.3.2.2.2 Managed Switch Mode (with/without the Optional IP Packet Processor) .............5–15
5.3.2.2.3 Router Mode (Requires Optional IP Packet Processor)..........................................5–18
5.3.2.3 PMSI Interface Example...............................................................................................5–20
5.4 Cabling to the Heights Remote Gateway (HRG)..................................................................5–21
5.4.1 CRS-170A HRG Control and IF Interface Connections Using Cabling Kit KT-0000160.......
...............................................................................................................................................5–21
5.4.1.1 Unit-to-Switch Control Interface Connection...............................................................5–22
5.4.1.2 Unit-to-Switch IF Interface Connection .......................................................................5–23
5.4.2 Unit-to-User Data Interface Connections and Examples.......................................................5–24
5.4.2.1 HRG Managed Switch Mode (Ethernet Bridge Mode) ................................................5–24
5.4.2.2 HRG Router Mode........................................................................................................5–26
5.5 Cabling to the Advanced VSAT CDM-850............................................................................5–27
5.5.1 CRS-170A CDM-850 Control and IF Interface Connections Using Cabling Kit
KT-0000160 .......................................................................................................................................5–27
5.5.1.1 Unit-to-Switch Control Interface Connection...............................................................5–28
5.5.1.2 Unit-to-Switch IF Interface Connection .......................................................................5–29
5.5.2 Unit-to-User Data Interface Connections and Examples.......................................................5–30
5.5.2.1 CDM-850 Managed Switch Mode (Ethernet Bridge Mode).........................................5–30
5.5.2.2 CDM-850 Router Mode................................................................................................5–32
5.6 Cabling to the Advanced VSAT CDM-840............................................................................5–33
5.6.1 CRS-170A CDM-840 Control and IF Interface Connections Using Cabling Kit
KT-0000160 .......................................................................................................................................5–33
5.6.1.1 Unit-to-Switch Control Interface Connection...............................................................5–34
5.6.1.2 Unit-to-Switch IF Interface Connection .......................................................................5–35
5.6.2.1 RJ-45 Gigabit Ethernet Data Interface Example...........................................................5–36
5.7 CDM-840 Block Diagram – G.703 Unbalanced E1 Data Interface Cabling to the CDM-760
or CDM-750...........................................................................................................................................5–38
5.7.1 CRS-170A CDM-760 or CDM-750 Control and IF Interface Connections Using Cabling
Kit KT-0000160 .................................................................................................................................5–38
5.7.1.1 Modem-to-Switch Control Interface Connection .........................................................5–39
5.7.1.2 Modem-to-Switch IF Interface Connection..................................................................5–40
5.7.2 Modem-to-User Data Interface Connections and Examples .................................................5–41
5.8 Cabling to the CDM-570AL or CDM-570L...........................................................................5–45
5.8.1 CRS-170ACDM-570AL or CDM-570L Interface Connections Using 1:1 Redundancy Kit
KT/10860-1 ........................................................................................................................................5–45
5.8.1.1 Modem-to-Switch Control Interface Connection .........................................................5–46
5.8.1.2 Modem-to-Switch IF Interface Connection..................................................................5–47
5.8.1.3 Modem-to-User Data Interface Connections and Examples.........................................5–48
5.8.1.3.1 Modem-to-User Non-IP Data Interface Connections and Examples......................5–48
5.8.1.3.1.1 EIA-422/232 Interface Example.....................................................................5–49
5.8.1.3.1.2 G.703 Balanced Interface Example.................................................................5–49
5.8.1.3.1.3 G.703 Unbalanced Interface Example ............................................................5–50
5.8.1.3.1.4 Modem-to-User IP (10/100 Ethernet) Interface Example...............................5–51
5.9 Cabling to the CDM-710GL....................................................................................................5–53

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5.9.1 CRS-170A CDM-710GL Control and IF Interface Connections Using Cabling Kit
KT/12551............................................................................................................................................5–53
5.9.1.1 Modem-to-Switch Control Interface Connection .........................................................5–54
5.9.1.2 Modem-to-Switch IF Interface Connection..................................................................5–55
5.9.2 Modem-to-User Data Interface Kit and Connection Examples.............................................5–56
5.9.2.1 Modem-to-User Non-IP Data Interface Kit and Connection Examples .......................5–56
5.9.2.1.1 Single G.703 E3/T3/STS-1 75ΩData Interface (CDI-10-1) Kit KT/12583...........5–57
5.9.2.1.2 HSSI Data Interface (CDI-60) Kit KT/12586.........................................................5–58
5.9.2.2 Gigabit Ethernet Interface (CDI-70) Example..............................................................5–59
5.10 Cabling to the CDM-710 .........................................................................................................5–61
5.10.1 CRS-170A CDM-710 Control and IF Interface Connections Using Cabling Kit
KT/12551 ...........................................................................................................................................5–61
5.10.1.1 Modem-to-Switch Control Interface Connection.....................................................5–62
5.10.1.2 Modem-to-Switch IF Interface Connection..............................................................5–63
5.10.2 Modem-to-User Data Interface Kit and Connection Examples ........................................5–64
5.10.2.1 Modem-to-User Non-IP Data Interface Kit and Connection Examples...................5–64
5.10.2.1.1 ASI 75ΩData Interface (CDI-40) Kit KT/12579.................................................5–65
5.10.2.1.2 HSSI Data Interface (CDI-60) Interface Kit KT/12578.......................................5–66
5.10.2.2 Gigabit Ethernet Data Interface (CDI-70) Example.................................................5–67
5.11 Cabling to the CDM-700 .........................................................................................................5–69
5.11.1 CRS-170A CDM-700 Connections Using Control and IF Interface Cabling Kit
KT/12551 ...........................................................................................................................................5–69
5.11.1.1 Modem-to-Switch Control Interface Connection.....................................................5–70
5.11.1.2 Modem-to-Switch IF Interface Connection..............................................................5–71
5.11.2 Modem-to-User Data Interface Kit and Connection Examples ........................................5–72
5.11.2.1 Modem-to-User Non-IP Data Interface Kit and Connection Examples...................5–72
5.11.2.1.1 Dual G.703 E3/T3/STS-1 75ΩData Interface (CDI-10) Kit KT/12582 and HSSI
Data Interface (CDI-60) Kit KT/12586 .....................................................................................5–73
5.11.2.1.2 155MB Copper Data Interface (CDI-50) Kit KT/12583......................................5–74
5.11.2.1.3 OC-3 Data Interface (CDI-50) Kits KT/12585 (Single-Mode) or KT/12584 (Multi-
Mode) ..............................................................................................................................5–75
5.11.2.2 Gigabit Ethernet Data Interface (CDI-70) Example.................................................5–76
5.12 Cabling the CDM-600L (CLM-9600L)..................................................................................5–77
5.13 Cabling the SDM-300L3..........................................................................................................5–79
APPENDIX A. CABLE DRAWINGS...................................................................................A-1
A.1 Overview.....................................................................................................................................A-1
A.2 Control Interface Cables...........................................................................................................A-2
A.2.1 Switch-to-Modem, Universal Control Cable (DB-9MDB-9M)......................................A-3
A.2.2 Switch-to-Modem, Adapter Control Cable, RoHS (DB-9MDB-15F) ............................A-4
A.2.3 Switch-to-Modem, Optional ‘Y’ Splitter Adapter Control Cable ((2X) DB-9MDB-15F)A-
5
A.2.4 Switch-to-Modem, Optional Control Cable, Non-muting (DB-9MDB-15F)..................A-6

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A.2.5 Modem-to-Switch (CRS-170A and CRS-150), Data / Control ‘Y’ Cable
(DB-25MDB-25M, DB-9M) ............................................................................................................A-7
A.2.6 Modem-to-Switch (CRS-170A and SMS-301), Control Cable (DB-9MDB-15M) ........A-8
A.3 IF / Data Interface Cables.........................................................................................................A-9
A.3.1 Switch-to-Modem / Modem-to-User, L-Band Coaxial Cable, RoHS, Type ‘N’ 50Ω......A-11
A.3.2 Switch-to-Modem / Modem-to-User, 70/140 MHz Coaxial Cable, RoHS, Type ‘BNC’ 75Ω.
...........................................................................................................................................A-12
A.3.3 Modem-to-User, Splitter Cable (DB-25F(2X) DB-25M) .............................................A-13
A.3.4 Modem-to-User, CDM-625A, CDM-625 Data ‘Y’ Splitter Cable (DB-9F(2X) DB-9M)....
...........................................................................................................................................A-14
A.3.5 Modem-to-User, Quad E1 ‘Y’ Splitter Adapter Cable (DB-9M(2X) DB-15F)............A-15
A.3.6 Modem-to-User, Quad E1 ‘Y’ Splitter Adapter Cable (DB-9M (2X) RJ-48F) ............A-16
A.3.7 Modem-to-User, Quad E1 ‘Y’ Splitter Adapter Cable Kit (KT-0000122).......................A-17
A.3.8 Modem-to-User, Overhead User Data ‘Y’ Splitter Cable (HD-44F(2X) HD-44M).....A-18
A.3.9 Modem-to-Modem CDM-625A, CDM-625 CnC®Plus Shielded Multi-drop Cable
(DB-9MDB-9M).............................................................................................................................A-19
A.3.10 Modem-to-User, RoHS Optical Gigabit Ethernet Cable Assemblies, Single-Mode OR Multi-
Mode ((2X) Type ‘LC’(4X) Type ‘LC’) ........................................................................................A-20
A.3.11 Modem-to-User, G.703 Balanced User Data ‘Y’ Splitter Cable (DB-15M(2X) DB-15M)..
...........................................................................................................................................A-21
A.3.12 Modem-to-User, HSSI User Data ‘Y’ Splitter Cable (HD-50M(2X) HD-50F)............A-22
A.3.13 Modem-to-User, RoHS OC-3 Cable Assemblies, Single-Mode OR Multi-Mode (Type
‘SC/UPC’(2X) Type ‘SC/UPC’) ...................................................................................................A-23
TABLES
Table 1-1. CRS-170A Compatibility Summary........................................................................................1–2
Table 3-1. Modem Side Type ‘Type ‘N’ Connectors...............................................................................3–4
Table 3-2. J3 | Control A Modem Connector Pinouts...............................................................................3–5
Table 3-3. J4 | Control B Modem Connector Pinouts...............................................................................3–5
Table 3-4. J7 | Rx and J8 | Tx ‘Type ‘N’ Connectors ...............................................................................3–6
Table 4-1. CRS-170A “Mode” DIP Switches – Product Compatibility Settings ...................................4–20
Table 4-2. CRS-170A “Switch Control” DIP Switches – Functional Settings.......................................4–20
FIGURES
Figure 1-1. CRS-170A L-Band 1:1 Redundancy Switch Module ............................................................1–1
Figure 1-2. CRS-170A – Modem Side Connectors ..................................................................................1–3
Figure 1-3. CRS-170A – Top and Antenna Side Features........................................................................1–4
Figure 1-4. 1:1 IP Redundancy Managed Switch Mode for CDM-625A or CDM-625, Heights Remote
Gateway, Advanced VSAT CDM-850 or CDM-840, CDM-760, CDM-750, CDM-710GL, CDM-
710, or CDM-700.............................................................................................................................1–8
Figure 1-5. 1:1 IP Redundancy Managed Switch Mode – Switchover for CDM-625A or CDM-625,
Heights Remote Gateway, Advanced VSAT CDM-850 or CDM-840, CDM-760, CDM-750,
CDM-710GL, CDM-710, or CDM-700...........................................................................................1–9
Figure 1-6. CDM-625A or CDM-625 1:1 IP Redundancy Router Mode – ‘A’ Online..........................1–10

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Figure 1-7. CDM-625A or CDM-625 1:1 IP Redundancy Router Mode Switchover (‘B’ Online).......1–11
Figure 1-8. CDM-570L/AL 1:1 IP Redundancy Router Mode – ‘A’ Online .........................................1–13
Figure 1-9. CDM-570L/AL 1:1 IP Redundancy Router Mode Switchover – ‘B’ Online.......................1–14
Figure 1-10. CRS-150 1:1 Redundancy Switch......................................................................................1–15
Figure 1-11. Comtech EF Data SMS-301 1:1 Redundancy Switch........................................................1–17
Figure 2-1. Optional KT/11708 Switch Mounting Kit..............................................................................2–2
Figure 3-1. Coaxial Connector Examples.................................................................................................3–1
Figure 3-2. D-Subminiature Connector Examples....................................................................................3–3
Figure 3-3. CRS-170A – Modem Side Connectors ..................................................................................3–4
Figure 3-4. CRS-170A – Antenna Side Connectors and Ground Stud (Rev. A and Later Versions).......3–6
Figure 4-1. Heights Remote Gateway HTTP Interface ‘Utility’ Page Example (Page Banner, VFP NOT
SHOWN)..........................................................................................................................................4–5
Figure 4–2. Heights Remote Gateway ‘Utility | Utility’ Page “Redundancy” Section:
Online/Offline Examples...............................................................................................................4–6
Figure 4-3. Advanced VSAT CDM-850 or CDM-840 HTTP Interface ‘Utility | Utility’ Page Example
(Page Banner, VFP NOT SHOWN).................................................................................................4–7
Figure 4-4. CDM-570L or CDM-570AL Configuration Interface Examples.........................................4–11
Figure 4-5. CDM-570L or CDM-570AL CLI 1:1 Redundancy Configuration Screen ..........................4–14
Figure 4-6. CRS-170A Antenna Side Controls.......................................................................................4–19
Figure 5-1. CDM-625A or CDM-625 Modem-to-Switch Control Connections ......................................5–6
Figure 5-2. CDM-625A or CDM-625 Modem-to-Switch L-Band IF Connections..................................5–7
Figure 5-3. CDM-625A or CDM-625 Modem-to-Switch L-Band Tx / 70/140 MHz Rx IF Connections .....
..........................................................................................................................................................5–8
Figure 5-4. CDM-625A or CDM-625 Block Diagram – UserModemSwitchTraffic....................5–9
Figure 5-5. CDM-625A or CDM-625 EIA-422/232 1:1 Example .........................................................5–10
Figure 5-6. CDM-625A or CDM-625 HSSI 1:1 Example......................................................................5–10
Figure 5-7. CDM-625A or CDM-625 Quad E1 1:1 Example ................................................................5–11
Figure 5-8. CDM-625A or CDM-625 G.703 Balanced 1:1 Example.....................................................5–12
Figure 5-9. CDM-625A or CDM-625 G.703 Unbalanced 1:1 Example
.................................................5–12
Figure 5-10. CDM-625A or CDM-625 ASI 1:1 Example......................................................................5–13
Figure 5-11. CDM-625A or CDM-625 Overhead 1:1 Example.............................................................5–13
Figure 5-12. CDM-625A or CDM-625 ESC 1:1 Example.....................................................................5–14
Figure 5-13. CDM-625A or CDM-625 Block Diagram – 10/100 Ethernet 1:1 Managed Switch Mode .......
........................................................................................................................................................5–16
Figure 5-14. CDM-625A or CDM-625 10/100 Ethernet 1:1 Cabling Example – Managed Switch Mode
(with/without Dedicated Management Port)..................................................................................5–17
Figure 5-15. CDM-625A or CDM-625 10/100 Ethernet 1:1 Example – Router Mode Block Diagram ........
........................................................................................................................................................5–18
Figure 5-16. CDM-625A or CDM-625 10/100 Ethernet 1:1 Cabling Example – Router Mode............5–19
Figure 5-17. CDM-625A or CDM-625 PMSI 1:1 Example...................................................................5–20
Figure 5-18. HRG Unit-to-Switch Control Connections ........................................................................5–22
Figure 5-19. HRG Unit-to-Switch L-Band IF Connections (H64 Shown).............................................5–23
Figure 5-20. HRG Block Diagram – Gigabit Ethernet 1:1 Managed Switch Mode...............................5–24
Figure 5-21. HRG Gigabit Ethernet 1:1 Cabling Example (H64 Shown) – Managed Switch Mode.....5–25
Figure 5-22. HRG Gigabit Ethernet 1:1 Cabling Example – Router Mode............................................5–26
Figure 5-23. CDM-850 Unit-to-Switch Control Connections ................................................................5–28
Figure 5-24. CDM-850 Unit-to-Switch L-Band IF Connections............................................................5–29
Figure 5-25. CDM-850 Block Diagram –Gigabit Ethernet 1:1 Managed Switch Mode........................5–30
Figure 5-26. CDM-850 Gigabit Ethernet 1:1 Cabling Example – Managed Switch Mode....................5–31
Figure 5-27. CDM-850 Gigabit Ethernet 1:1 Cabling Example – Router Mode....................................5–32

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Figure 5-28. CDM-840 Unit-to-Switch Control Connections ................................................................5–34
Figure 5-29. CDM-840 Unit-to-Switch L-Band IF Connections............................................................5–35
Figure 5-30. CDM-840 Block Diagram – Gigabit Ethernet 1:1 Operation ............................................5–36
Figure 5-31. CDM-840 Unbalanced G.703 E3/T375Ω Interface Kit – KT/12542.................................5–37
Figure 5-32. CDM-760 or CDM-750 Modem-to-Switch Control Connections .....................................5–39
Figure 5-33. CDM-760 or CDM-750 Modem-to-Switch L-Band IF Connections.................................5–40
Figure 5-34. CDM-760 or CDM-750 RJ-45 Gigabit Ethernet 1:1 Example ..........................................5–41
Figure 5-35. CDM-760 or CDM-750 Optical Gigabit Ethernet 1:1 Example........................................5–42
Figure 5-36. CDM-760 or CDM-750 Block Diagram – UserModemSwitchTraffic ..................5–43
Figure 5-37. CDM-760 or CDM-750 G.703 E3/T3 PIIC Interface Kit KT/12542.................................5–44
Figure 5-38. CDM-570AL or CDM-570L Modem-to-Switch Control Connections..............................5–46
Figure 5-39. CDM-570AL or CDM-570L Modem-to-Switch L-Band Connections..............................5–47
Figure 5-40. CDM-570L or CDM-570AL or CDM-570L Block Diagram –
UserModemSwitchTraffic..................................................................................................5–48
Figure 5-41. CDM-570L or CDM-570AL or CDM-570L EIA-422/232 1:1 Example ..........................5–49
Figure 5-42. CDM-570AL or CDM-570L G.703 Balanced 1:1 Example..............................................5–49
Figure 5-43. CDM-570AL or CDM-570L G.703 Unbalanced 1:1 Example..........................................5–50
Figure 5-44. CDM-570AL or CDM-570L IP (10/100 Ethernet) 1:1 Example.......................................5–51
Figure 5-45. CDM-710GL Modem-to-Switch Control Connections......................................................5–54
Figure 5-46. CDM-710GL Modem-to-Switch L-Band IF Connections.................................................5–55
Figure 5-47. CDM-710GL Block Diagram – UserModemSwitchTraffic...................................5–56
Figure 5-48. CDM-710GL CDI-10-1 Single G.703 E3/T3/STS-1 1:1 Example....................................5–57
Figure 5-49. CDM-710GL CDI-60 HSSI 1:1 Example..........................................................................5–58
Figure 5-50. CDM-710GL CDI-70 Gigabit Ethernet 1:1 Example........................................................5–59
Figure 5-51. CDM-710 Modem-to-Switch Control Connections...........................................................5–62
Figure 5-52. CDM-710 Modem-to-Switch L-Band IF Connections.......................................................5–63
Figure 5-53. CDM-710 Block Diagram – UserModemSwitchTraffic........................................5–64
Figure 5-54. CDM-710 CDI-40 ASI 1:1 Example..................................................................................5–65
Figure 5-55. CDM-710 CDI-60 HSSI 1:1 Example ...............................................................................5–66
Figure 5-56. CDM-710 CDI-70 Gigabit Ethernet 1:1 Example .............................................................5–67
Figure 5-57. CDM-700 Modem-to-Switch Control Connections...........................................................5–70
Figure 5-58. CDM-700 Modem-to-Switch L-Band IF Connections.......................................................5–71
Figure 5-59. CDM-700 Block Diagram – UserModemSwitchTraffic........................................5–72
Figure 5-60. CDM-700 CDI-10 G.703 E3/T3/STS-1, CDI-60 HSSI 1:1 Example................................5–73
Figure 5-61. CDM-700 CDI-50 155MB Copper 1:1 Example...............................................................5–74
Figure 5-62. CDM-700 CDI-50 OC-3 1:1 Example (Single-Mode shown) ...........................................5–75
Figure 5-63. CDM-700 CDI-70 Gigabit Ethernet 1:1 Example .............................................................5–76
Figure 5-64. CDM-600L (CLM-9600L) Block Diagram – Cable Connections.....................................5–77
Figure 5-65. SDM-300L3 Block Diagram – Cable Connections............................................................5–79
Figure A-1. Universal Control Cable (CA/WR9378-4)...........................................................................A-3
Figure A-2. Adapter Control Cable (CA/WR12135-1).............................................................................A-4
Figure A-3. Optional ‘Y’ Splitter Adapter Control Cable (CA/WR13011-4) ..........................................A-5
Figure A-4. Optional Control Cable (CA-0000187).................................................................................A-6
Figure A-5. Data / Control ‘Y’ Cable (CA/WR10456-4).........................................................................A-7
Figure A-6. Control Cable (CA/WR10163-1) ..........................................................................................A-8
Figure A-7. Tx/Rx 50Ω Type ‘N’ Coaxial Cable (CA/RF10453-4).......................................................A-11
Figure A-8. Tx/Rx/User Data 75Ω Type ‘BNC’ Coaxial Cable (CA/BNC75OHM).............................A-12
Figure A-9. 1:1 User Data Splitter Cable (CA/RB10461-1)...................................................................A-13
Figure A-10. 1:1 User Data ‘Y’ Splitter Cable (CA-0000071)...............................................................A-14
Figure A-11. Quad E1 User Data ‘Y’ Splitter Adapter Cable (CA-0000163)........................................A-15

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Figure A-12. Quad E1 User Data ‘Y’ Splitter Adapter Cable (CA-0000164)........................................A-16
Figure A-13. Quad E1 User Data ‘Y’ Splitter Adapter Cable Kit (KT-0000122)..................................A-17
Figure A-14. Overhead User Data ‘Y’ Splitter Cable (CA-0000070) ....................................................A-18
Figure A-15. CDM-625A, CDM-625 CnC® Plus Shielded Multi-drop Cable (CA-0000276)..............A-19
Figure A-16. Optical Gigabit Ethernet User Data Cable Assembly .......................................................A-20
Figure A-17. G.703 Balanced User Data ‘Y’ Splitter Cable (CA/WR10522-1).....................................A-21
Figure A-18. HSSI User Data ‘Y’ Splitter Cable (PP/SC3523)..............................................................A-22
Figure A-19. OC-3 User Data Cable Assembly......................................................................................A-23

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PREFACE
About this Manual
This manual provides installation and operation information for the Comtech EF Data CRS-170A L-Band 1:1
Redundancy Switch. This document is intended for anyone who installs or operates the CRS-170A in a 1:1
redundant system.
Related Documents
• CDM-625A Advanced Satellite Modem Installation and Operation Manual
(CEFD P/N MN-CDM625A)
• CDM-625 Advanced Satellite Modem Installation and Operation Manual
(CEFD P/N MN-CDM625)
• Heights Networking Platform Spoke (Remote) Site Products Installation and Operation Manual
(including H64, H32, H16, or H8 Heights Remote Gateway)
(CEFD P/N MN-HEIGHTS-SPOKE)
• CDM-850 Remote Router Installation and Operation Manual
(CEFD P/N MN-CDM850)
• CDM-840 Remote Router Installation and Operation Manual
(CEFD P/N MN-CDM840)
• CDM-760 Advanced High-Speed Trunking Modem Installation and Operation Manual
(CEFD P/N MN-CDM760)
• CDM-750 Advanced High-Speed Trunking Modem Installation and Operation Manual
(CEFD P/N MN-CDM750)
• CDM-570A/CDM-570AL/CDMR-570AL Satellite Modem Installation and Operation Manual (CEFD
P/N MN-CDM570A)
• CDM-570/CDM-570L/CDMR-570L Satellite Modem Installation and Operation Manual
(CEFD P/N MN/CDM570L.IOM)
• CDM-710G/710GL High-Speed Satellite Modem Installation and Operation Manual (CEFD P/N MN-
CDM710G)
• CDM-710 Broadcast Satellite Modem Installation and Operation Manual
(CEFD P/N MN/CDM710.IOM)
• CDM-700 High-Speed Satellite Modem Installation and Operation Manual
(CEFD P/N MN/CDM700.IOM)
• CDM-600L Satellite Modem Installation and Operation Manual
(CEFD P/N MN/CDM600L.IOM)
• CLM-9600L Open Network Satellite Modem Installation and Operation Manual
(CEFD P/N MN/CLM9600L.IOM)

CRS-170A L-Band 1:1 Redundancy Switch MN/CRS170A.IOM
Preface Revision 14
xiv
• SDM-300L3 Satellite Modem Installation and Operation Manual
(CEFD P/N MN/SDM300L3.IOM)
• CRS-150 1:1 Redundancy Switch Installation and Operation Manual
(CEFD P/N MN/CRS150.IOM)
• SMS-301 Redundancy Switch Installation and Operation Manual
(CEFD P/N MN/SMS301.IOM)
Conventions and References
Patents and Trademarks
See all of Comtech EF Data's Patents and Patents Pending at http://patents.comtechefdata.com.
Comtech EF Data acknowledges that all trademarks are the property of the trademark owners.
Warnings, Cautions and Notes
A WARNING INFORMS YOU ABOUT A POSSIBLE HAZARD THAT MAY CAUSE DEATH
OR SERIOUS INJURY.
A CAUTION informs you about a possible hazard that MAY CAUSE INJURY or
PROPERTY DAMAGE.
A NOTE gives you important information about a task or the equipment.
A REFERENCE directs you to additional information about a task or the equipment.
Examples of Multi-Hazard Notices
Recommended Standard Designations
The Electronic Industries Association (EIA) designations supersede the Recommended Standard (RS)
designations. References to the old designations may be shown when depicting actual text (e.g., RS-232)
displayed on Switch or the individual modem Web Server pages, serial remote interfaces, Telnet Command
Line Interfaces (CLIs), or unit rear panels. All other references in the manual refer to EIA designations.

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Preface Revision 14
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CAUTION: You should carefully review the following information.
Safety and Compliance
Electrical Safety and Compliance
The unit complies with the EN 60950 Safety of Information Technology Equipment (Including Electrical
Business Machines) safety standard.
The equipment is rated for operation at ±12 volts DC. It has a maximum power consumption of 4.5
Watts, and draws a maximum of 250 mA at +12 volts DC and 120 mA at -12 volts DC. The power supply
current is, in all circumstances, supplied by either a single Comtech EF Data modem, or a pair of these
modems.
CAUTION: IF THE UNIT IS OPERATED IN A VEHICLE OR MOVABLE INSTALLATION, MAKE
SURE THE UNIT IS STABLE. OTHERWISE, EN 60950 SAFETY IS NOT GUARANTEED.
Electrical Installation
CAUTION: CONNECT THE UNIT TO A POWER SYSTEM THAT HAS SEPARATE GROUND,
LINE AND NEUTRAL CONDUCTORS. DO NOT CONNECT THE UNIT WITHOUT A DIRECT
CONNECTION TO GROUND.
Operating Environment
CAUTION: DO NOT OPERATE THE UNIT IN ANY OF THESE EXTREME OPERATING
CONDITIONS:
•
AMBIENT TEMPERATURES LESS THAN 0° C (32° F) OR MORE THAN 50° C (122° F).
• PRECIPITATION, CONDENSATION, OR HUMID ATMOSPHERES OF MORE THAN
95% RELATIVE HUMIDITY.
• UNPRESSURIZED ALTITUDES OF MORE THAN 2000 METRES (6561.7 FEET).
• EXCESSIVE DUST.
• FLAMMABLE GASES.
•
CORROSIVE OR EXPLOSIVE ATMOSPHERES.
Equipment Connection
THE CRS-170A IS DESIGNED FOR OPERATION ONLY WITH THE COMTECH EF DATA
PRODUCTS IDENTIFIED IN THIS PREFACE UNDER ‘RELATED DOCUMENTS’. THESE
PRODUCTS SUPPLY DC OPERATING CURRENT (ELECTRONICALLY FUSED AND
PROTECTED) AND CONTROL SIGNALS FOR THE CORRECT FUNCTIONING OF THIS
SWITCH. CONNECTION TO OTHER MANUFACTURERS’ EQUIPMENT COULD RESULT
IN DAMAGE TO THE SWITCH. THE CRS-170A IS NOT COMPATIBLE WITH OTHER
COMTECH EF DATA MODEMS OR PRODUCTS NOT FEATURED IN THIS MANUAL.

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Preface Revision 14
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South Korean Electromagnetic Compatibility
Unofficial translation:
Class A: EMC Registration is done on this equipment for business use only (Class A). Product seller and
user should notice that this equipment is not for household use.
European Union Radio Equipment and Telecommunications Terminal
Equipment (R&TTE) Directive (1999/5/EC) and EN 301 489-1
Independent testing verifies that the unit complies with the European Union R&TTE Directive, its
reference to EN 301 489-1 (Electromagnetic compatibility and Radio spectrum Matters [ERM];
ElectroMagnetic Compatibility [EMC] standard for radio equipment and services, Part 1: Common
technical requirements), and the Declarations of Conformity for the applicable directives, standards, and
practices that follow:
European Union Electromagnetic Compatibility (EMC) Directive
(2004/108/EC)
• Emissions: EN 55022 Class A – Limits and Methods of Measurement of Radio Interference
Characteristics of Information Technology Equipment.
• Immunity: EN 55024 – Information Technology Equipment: Immunity Characteristics, Limits,
and Methods of Measurement.
• EN 61000-3-2 – Harmonic Currents Emission
• EN 61000-3-3 – Voltage Fluctuations and Flicker.
• Federal Communications Commission Federal Code of Regulation FCC Part 15, Subpart B.
CAUTION: TO ENSURE THAT THE UNIT COMPLIES WITH THESE STANDARDS, OBEY
THESE INSTRUCTIONS:
• Use coaxial cable that is of good quality for connections to the L-Band Type ‘N’ Rx (receive)
female connector.
• Use Type 'D' connectors that have back-shells with continuous metallic shielding.
• Type ‘D’ cabling must have a continuous outer shield (either foil or braid, or both). The
shield must be bonded to the back-shell.
• Operate the Switch and modems with their covers on at all times.

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European Union Low Voltage Directive (LVD) (2006/95/EC)
Symbol Description
<HAR> Type of power cord required for use in the European Community.
CAUTION: Double-pole/Neutral Fusing
ACHTUNG: Zweipolige bzw. Neutralleiter-Sicherung
International Symbols
Symbol Definition Symbol Definition
Alternating Current
Protective Earth
Fuse Chassis Ground
For additional symbols, see the ‘Warnings, Cautions and Notes’listed elsewhere in this
Preface.
European Union RoHS Directive (2002/95/EC)
This unit satisfies (with exemptions) the requirements specified in the European Union Directive
on the Restriction of Hazardous Substances in Electrical and Electronic Equipment (EU RoHS,
Directive 2002/95/EC).
European Union Telecommunications Terminal Equipment Directive
(91/263/EEC)
In accordance with the European Union Telecommunications Terminal Equipment Directive
91/263/EEC, the unit should not be directly connected to the Public Telecommunications
Network.
CE Mark
Comtech EF Data declares that the unit meets the necessary requirements for the CE Mark.
Product Support
For all product support, please call:
+1.240.243.1880
+1.866.472.3963 (toll free USA)
!

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Preface Revision 14
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Comtech EF Data Headquarters
http://www.comtechefdata.com
Comtech EF Data Corp.
2114 West 7th Street
Tempe, Arizona USA 85281
+1.480.333.2200
Warranty Policy
Comtech EF Data products are warranted against defects in material and workmanship for a
specific period from the date of shipment, and this period varies by product. In most cases, the
warranty period is two years. During the warranty period, Comtech EF Data will, at its option,
repair or replace products that prove to be defective. Repairs are warranted for the remainder
of the original warranty or a 90 day extended warranty, whichever is longer. Contact Comtech
EF Data for the warranty period specific to the product purchased.
For equipment under warranty, the owner is responsible for freight to Comtech EF Data and all
related customs, taxes, tariffs, insurance, etc. Comtech EF Data is responsible for the freight
charges only for return of the equipment from the factory to the owner. Comtech EF Data will
return the equipment by the same method (i.e., Air, Express, Surface) as the equipment was sent
to Comtech EF Data.
All equipment returned for warranty repair must have a valid RMA number issued prior to
return and be marked clearly on the return packaging. Comtech EF Data strongly recommends
all equipment be returned in its original packaging.
Comtech EF Data Corporation’s obligations under this warranty are limited to repair or
replacement of failed parts, and the return shipment to the buyer of the repaired or replaced
parts.
Limitations of Warranty
The warranty does not apply to any part of a product that has been installed, altered, repaired,
or misused in any way that, in the opinion of Comtech EF Data Corporation, would affect the
reliability or detracts from the performance of any part of the product, or is damaged as the
result of use in a way or with equipment that had not been previously approved by Comtech EF
Data Corporation.