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CRS-280L
Installation And Operation Manual
70 pgs3.99 Mb0
User Manual
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Comtech EF Data CRS-280L User Manual

S
L
CR
L-Band IF Switch for 1:N Redundancy
Installation and Operation Manual
280
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/CRS280L.IOM Revision 1
Comtech EF Data Documentation Update
OriginalManualPart Number/Rev:

Errata A

MN/CRS280L.IOMRev1
ErrataNumber/ PLMDocumentID:
PLMCONumber: C‐0027990
Comments: Theupdatedinformationwillbeincorporatedintothenextformalrevision
Change:
ER-CRS280L-EA1
ofthemanual.
NOTES:
1. CDM-625 and CDM-625A switch configurations are identical.
2. Throughout the manual, replace "CDM-625" with "CDM-625/A".
ER-CRS280L-EA1 Rev - This document is not subject to revision/update! PLM CO C-0027990 Page 1 of 2
Thispageisintentionallyblank.
ER-CRS280L-EA1 Rev - This document is not subject to revision/update! PLM CO C-0027990 Page 2 of 2
S
L
CR
280
L-Band IF Switch for 1:N Redundancy
Installation and Operation Manual
Part Number MN/CRS280L.IOM
Revision 1
December 17, 2009
Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, 480.333.2200, FAX: 480.333.2161
Copyright © 2009 Comtech EF Data. All rights reserved. Printed in the USA.
This page is intentionally blank.

Table of Contents

TABLE OF CONTENTS ................................................................................................. III
TABLES ......................................................................................................................... VI
FIGURES ....................................................................................................................... VI
PREFACE ..................................................................................................................... VII
About this Manual ...................................................................................................................... vii
Reporting Comments or Suggestions Concerning this Manual ................................................ vii
Related Documents ..................................................................................................................... vii
Conventions and References ..................................................................................................... viii
Cautions and Warnings ............................................................................................................ viii
Metric Conversion ................................................................................................................... viii
Recommended Standard Designations .................................................................................... viii
Telecommunications Terminal Equipment Directive ............................................................. viii
Federal Communications Commission (FCC) ........................................................................ viii
Electrical Safety ........................................................................................................................... ix
Fuses .......................................................................................................................................... ix
Environmental ............................................................................................................................ ix
Installation.................................................................................................................................. ix
International Symbols ................................................................................................................. x
EMC (Electromagnetic Compatibility) ....................................................................................... x
EN55022 - 1997 Compliance ...................................................................................................... x
EN55024 - 1998 Compliance ...................................................................................................... x
Warranty Policy ........................................................................................................................... xi
Limitations of Warranty ............................................................................................................. xi
Exclusive Remedies .................................................................................................................. xii
Customer Support ...................................................................................................................... xiii
Online Customer Support ........................................................................................................ xiii
CHAPTER 1. INTRODUCTION ................................................................................ 1–1
1.1 Overview ........................................................................................................................ 1–1
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CRS-280L L-Band IF Switch for 1:N Redundancy Revision 1 Table of Contents MN/CRS280L.IOM
1.1.1Compatibility .............................................................................................................. 1–2
1.2 Physical Description...................................................................................................... 1–3
1.2.1Front Panel .................................................................................................................. 1–3
1.2.2Rear Panel ................................................................................................................... 1–3
1.2.3Dimensional Envelope ................................................................................................ 1–4
1.3 Summary of Specifications ........................................................................................... 1–5
1.3.1Typical Insertion Loss Graphs .................................................................................... 1–6
CHAPTER 2. INSTALLATION ................................................................................. 2–1
2.1 Unpacking and Inspection ............................................................................................ 2–1
2.2 Mounting ........................................................................................................................ 2–2
CHAPTER 3. CONNECTOR PINOUTS ................................................................... 3–1
3.1 Connector Overview ..................................................................................................... 3–1
3.2 Front Panel Connectors ................................................................................................ 3–3
3.2.1 Front Panel IF Connectors – Receive IF and Transmit IF, 50Ω Type ‘N’ ............... 3–3
3.3 Rear Panel Control Connectors ................................................................................... 3–4
3.3.1Switch Control Interface Connectors .......................................................................... 3–4
3.3.1.1 J1 CRS Control Interface Connector, DB-25F ................................................... 3–4
3.3.1.2 J2 SMS Control Interface Connector, DB-15M ................................................. 3–4
3.3.2Power / Ground Connections ...................................................................................... 3–5
3.3.2.1 Alternating Current (AC) Power Connectors ..................................................... 3–5
3.3.2.2 Direct Current (DC) Power Connectors (optional) ............................................. 3–5
3.3.2.3 Ground Connector ............................................................................................... 3–5
CHAPTER 4. CABLES AND CONNECTIONS ........................................................ 4–1
4.1 Overview ........................................................................................................................ 4–1
4.2 CRS-280L Control Cable Connections ....................................................................... 4–2
4.2.1SMS-7000 1:8 Modem Protection Switch Control Cable Connection ....................... 4–2
4.2.2CRS-400 1:8 Redundancy Switch Control Cable Connection ................................... 4–3
4.2.3CRS-300 1:N Redundancy Switch Control Cable Connection ................................... 4–3
4.2.4CRS-500 M:N Redundancy System Control Cable Connection ................................ 4–3
4.3 CRS-280L L-Band IF Cable Connections .................................................................. 4–8
4.3.1L-Band IF Cable Characteristics ................................................................................. 4–8
4.3.2L-Band Switch-to-Modem Cabling Requirements ..................................................... 4–8
4.3.3L-Band Uplink/Downlink Cable Connections ............................................................ 4–9
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CRS-280L L-Band IF Switch for 1:N Redundancy Revision 1 Table of Contents MN/CRS280L.IOM
CHAPTER 5. REDUNDANCY SYSTEM CONFIGURATION / OPERATION ........... 5–1
5.1 Overview ........................................................................................................................ 5–1
5.2 CRS-280L Input Power Cord Connections ................................................................ 5–1
5.3 1:N Redundancy System Power-up Sequence ............................................................ 5–2
5.3.1CRS-280L operations with the CRS-500 M:N Redundancy System ......................... 5–2
APPENDIX A.CABLE DRAWINGS ......................................................................... A-1
A.1 Introduction ................................................................................................................... A-1
A.2 Control Interface Cables .............................................................................................. A-1
A.2.1 SMS-7000 Control Cable ........................................................................................ A-2
A.2.2 CRS-400/CRS-300 Control Cable .......................................................................... A-3
A.2.3 CRS-500 Control Cable .......................................................................................... A-4
A.3 IF Interface Cable, Type ‘N’ 50Ω ................................................................................ A-5
APPENDIX B.CRS-280L POWER SUPPLY MODULE REPLACEMENT .............. B–1
B.1 Introduction ................................................................................................................... B–1
B.2 Power Supply Module Removal Procedure ................................................................ B–2
B.3 Power Supply Module Installation Procedure ........................................................... B–4
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CRS-280L L-Band IF Switch for 1:N Redundancy Revision 1 Table of Contents MN/CRS280L.IOM
Tables
Table 3-1. CRS-280L External Connectors (Front and Rear Panel) .......................................... 3–2
Figures
Figure 1-1. CRS-280L L-Band IF Switch for 1:N Redundancy ................................................. 1–1
Figure 1-2. 1:10 Redundancy w/CRS-280L – System-level Block Diagram ............................. 1–2
Figure 1-3. CRS-280L Front Panel (1:10 Configuration shown) ............................................... 1–3
Figure 1-4. CRS-280L Rear Panel .............................................................................................. 1–3
Figure 1-5. CRS-280L Dimensional Envelope ........................................................................... 1–4
Figure 1-6. Graph 1 – Downlink Input to Rx Output ................................................................. 1–6
Figure 1-7. Graph 2 – Downlink Input to Backup Rx Output .................................................... 1–7
Figure 1-8. Graph 3 – Backup Input to Selected Uplink Output ................................................ 1–8
Figure 1-9. Graph 4 – Tx Input to Associated Uplink Output .................................................... 1–9
Figure 2-1. Typical CRS-280L/CRS-300/CRS-350 Rack Mounting Configuration ......................... 2–3
Figure 2-2. Typical CRS-280L/CRS-500/CRS-350 Rack Mounting Configuration ......................... 2–4
Figure 3-1. CRS-280L Connectors ............................................................................................. 3–1
Figure 4-1. SMS-7000 to CRS-280L Control Cable Connection ............................................... 4–4
Figure 4-2. CRS-400 to CRS-280L Control Cable Connection ................................................. 4–5
Figure 4-3. CRS-300 to CRS-280L Control Cable Connection ................................................. 4–6
Figure 4-4. CRS-500 to CRS-280L Control Cable Connection ................................................. 4–7
Figure A-1. CRS-280L Æ SMS-7000 Data Switch Unit (DSU) Control Cable (CEFD P/N CA/5343-1)
............................................................................................................................................. A-2
Figure A-2. CRS-280L Æ CRS-400, CRS-300 Control Cable (CEFD P/N CA/WR0066) ....... A-3
Figure A-3. CRS-280L Æ CRS-500 Data Switch Unit (DSU) Control Cable (CEFD P/N CA-0000405)
............................................................................................................................................. A-4
Figure A-4. Type ‘N’ 50Ω IF Coax Cable (CEFD P/N CA/RF10453-x) ................................... A-5
Figure B-1. CRS-280L Rear Panel (shown with PL/10207-1 AC Modules) ............................. B–1
vi

PREFACE

About this Manual

This manual provides installation and operation information for the Comtech EF Data CRS-280L L-Band IF Switch, designed for use as a companion product in Comtech 1:N Redundancy Systems . This is a technical document intended for earth station engineers, technicians, and operators responsible for the operation and maintenance of the CRS-280L.
Revision 1 denotes a complete rewrite of this Installation and Operation Manual (CEFD P/N MN/CRS280L.IOM). It is intended replace the previous versions of this document in its entirety. All content has been reorganized and updated to conform to current Comtech EF Data Technical Publications Standards and Practices.

Reporting Comments or Suggestions Concerning this Manual

Comments and suggestions regarding the content and design of this manual will be appreciated. To submit comments, please contact the Comtech EF Data Technical Publications Department:
TechnicalPublications@comtechefdata.com.

Related Documents

• Comtech EF Data CRS-300 1:10 Redundancy Switch Installation and Operation Manual
• Comtech EF Data CRS-500 M:N Redundancy System Installation and Operation Manual
• Comtech EF Data SMS-7000 1:8 Modem Protection Switch Installation and Operation Manual
(legacy product, no longer in production)
• Comtech EF Data CRS-400 1:8 Redundancy Switch Installation and Operation Manual (legacy product, no longer in production)
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CRS-280L L-Band IF Switch for 1:N Redundancy Revision 1 Preface MN/CRS280L.IOM

Conventions and References

Cautions and Warnings

WARNING indicates a potentia lly hazardous situation that, if not avoided, coul d
WARNING
CAUTION
IMPORTANT
result in death or serious injury.
CAUTION indicates a hazardous situation that, if not avoided, may result in minor or moderate injury. CAUTION may also be used to indicate other unsafe practices or risks of property damage.
IMPORTANT or NOTE indicates information cri tical fo r proper equipmen t func tion.

Metric Conversion

Metric conversion information is located on the inside back cover of this manual. This information is provided to assist the operator in cross-referencing non-metric to metric conversions.

Recommended Standard Designations

Recommended Standard (RS) Designations have been superseded by the new designation of the Electronic Industries Association (EIA). References to the old designations are shown only when depicting actual text displayed on the screen of the unit (RS-232, RS-485, etc.). All other references in the manual will be shown with the EIA designations.

Telecommunications Terminal Equipment Directive

In accordance with the Telecommunications Terminal Equipment Directive 91/263/EEC, this equipment should not be directly connected to the Public Telecommunications Network.

Federal Communications Commission (FCC)

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate radio frequency energy. If not installed and used in accordance with the instruction manual, it may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference; in which case, users are required to correct the interference at their own expense.
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CRS-280L L-Band IF Switch for 1:N Redundancy Revision 1 Preface MN/CRS280L.IOM
The user should carefully review the following information:
IMPORTANT

Electrical Safety

The CRS-280L has been shown to comply with the following safety standard:
• EN60950: Safety of Information Technology Equipment, including electrical business
machines
The equipment is rated for operation over the range 90-264 volts AC per each power supply. Each has a maximum power consumption of 25 Watts and draws a maximu m of 0.75 Amps rms max @ 90 Volts AC, and 0.35 Amps rms max @ 230 Volts AC.
Optionally, the equipment is rated for operation over the range of 36-72 volts DC per each supply. Each has a maximum power consumption of 25 Watts and draws a maximum of 6.25 Amps.

Fuses

CAUTION
The AC-powered CRS-280L is outfitted with two power supplies, each containing two fuses – one each for line and neutral connections. These are contained within the body of each IEC power inlet connector, behind a small plastic flap.
The optionally DC-powered CRS-280L is outfitted with two power supplies. Each power supply contains one fuse installed into a fuse holder.

Environmental

The CRS-280L must not be operated in an environment where the unit is exposed to extremes of temperature outside the ambient range 0 to 50°C, precipitation, condensation, or humid atmospheres above 95% RH, altitudes (non-pressurized) greater than 2000 meters, excessive dust or vibration, flammable gases, corrosive or explosive atmospheres.
Operation in vehicles or other transportable installations that are equipped to provide a stable environment is permitted. If such vehicles do not provide a stable environment, safety of the equipment to EN60950 may not be guaranteed.
FOR CONTINUED OPERATOR SAFETY, ALWAYS REPLACE THE FUSES WITH THE CORRECT TYPE AND RATING.
• For 230 volt AC operation, use T2.5A, 20mm fuses.
• For 115 volt AC operation, use T5.0A fuses, slow blow, P/N 5ASB-IEC.
• For 48 volt DC operation, use T6.25A 3AG fuses.

Installation

The installation and connection to the line supply must be made in compliance to local or national wiring codes and regulations.
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CRS-280L L-Band IF Switch for 1:N Redundancy Revision 1 Preface MN/CRS280L.IOM
The CRS-280L is designed for connection to a power system that has separate ground, line and neutral conductors. The equipment is not designed for connection to a power system that has no direct connection to ground.
The CRS-280L is shipped with line inlet cables suitable for use in the country of operation. If it is necessary to replace these cables, ensure the replacement has an equivalent specification. Examples of acceptable ratings for the cable include HAR, BASEC and HOXXX-X. Examples of acceptable connector ratings include VDE, NF-USE, UL, CSA, OVE, CEBEC, NEMKO, DEMKO, BS1636A, BSI, SETI, IMQ, KEMA-KEUR and SEV.

International Symbols

International Symbols
Symbol Definition Symbol Definition
~
Alternating Current
Fuse

EMC (Electromagnetic Compatibility)

This is a Class A product. In a domestic environment, it may cause radio interference that requires the user to take adequate protection measures.

EN55022 - 1997 Compliance

This equipment meets the radio disturbance characteristic specifications for information technology equipment as defined in EN55022-1997.

EN55024 - 1998 Compliance

This equipment meets the EMC/immunity characteris tics for the limits and m ethods of measurem ent for information technology equipment per EN55024-1998.
To ensure that the CRS-280L continues to comply with these standards,
IMPORTANT
observe the following instructions:
Protective Earth
Chassis Ground
• Connections to the transmit and receive IF ports (‘N’ type female connectors) should be made using a good quality coaxial cable; for example, RG213/U.
• The 'D' type connector attached to the rear panel must have a back-shell that provides continuous metallic shielding. Cable with a continuous outer shield (either foil or braid, or both) must be used, and the shield must be bonded to the back-shell.
• The equipment must be operated with both AC module panels assembled firmly to the rear of the chassis at all times. If it becomes necessary to remove either AC module, the user should ensure that the cover is correctly re-fitted before normal operation commences.
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CRS-280L L-Band IF Switch for 1:N Redundancy Revision 1 Preface MN/CRS280L.IOM

Warrant y 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.
The warranty does not apply to any product or parts thereof where the serial number or the serial number of any of its parts has been altered, defaced, or removed.
The warranty does not cover damage or loss incurred in transportation of the product. The warranty does not cover replacement or repair necessitated by loss or damage from
any cause beyond the control of Comtech EF Data Corporation, such as lightning or other natural and weather related events or wartime environments.
The warranty does not cover any labor involved in the removal and or reinstallation of warranted equipment or parts on site, or any labor required to diagnose the necessity for repair or replacement.
The warranty excludes any responsibility by Comtech EF Data Corporation for incidental or consequential damages arising from the use of the equipment or products, or for any
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CRS-280L L-Band IF Switch for 1:N Redundancy Revision 1 Preface MN/CRS280L.IOM
inability to use them either separate from or in combination with any other equipment or products.
A fixed charge established for each product will be imposed for all equipment returned for warranty repair where Comtech EF Data Corporation cannot identify the cause of the reported failure.

Exclusive Remedies

Comtech EF Data Corporation’s warranty, as stated is in lieu of all other warranties, expressed, implied, or statutory, including those of merchantability and fitness for a particular purpose. The buyer shall pass on to any purchaser, lessee, or other user of Comtech EF Data Corporation’s products, the aforementioned warranty, and shall indemnify and hold harmless Comtech EF Data Corporation from any claims or liability of such purchaser, lessee, or user based upon allegations that the buyer, its agents, or employees have made additional warranties or representations as to product preference or use.
The remedies provided herein are the buyer’s sole and exclusive remedies. Comtech EF Data shall not be liable for any direct, indirect, special, incidental, or consequential damages, whether based on contract, tort, or any other legal theory.
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CRS-280L L-Band IF Switch for 1:N Redundancy Revision 1 Preface MN/CRS280L.IOM

Customer Support

Refer to p. xi in this Preface for information regarding this product’s Warranty Policy.
Contact the Comtech EF Data Customer Support Department for:
• Product support or training;
• Reporting comments or suggestions concerning manuals;
• Information on upgrading or returning a product.
A Customer Support representative may be reached at:
Comtech EF Data Attention: Customer Support Department 2114 West 7th Street Tempe, Arizona 85281 USA
480.333.2200 (Main Comtech EF Data number)
480.333.4357 (Customer Support Desk)
480.333.2161 FAX
To return a Comtech EF Data product (in-warranty and out-of-warranty) for repair or replacement:
• Contact the Comtech EF Data Custo mer Support Department. Be prepared to supply
the Customer Support representative with the model number, serial number, and a description of the problem.
• Request a Return Material Authorizatio n (RMA) number from the Comtech EF Data
Customer Support representative.
• Pack the product in its original shipp ing carton/packaging to ensure th at the product is
not damaged during shipping.
• Ship the product back to Comtech EF Data. (Shipping charges should be prepaid.)

Online Customer Support

An RMA number request can be requested electronically by contacting the Customer Support Department through the online support page at
• Click on the “Service” hyperlink, then read the “Return Material Authorization”
section for detailed instructions on our return procedures.
• Click on the “RMA Requ est Form” hyperlink, then fill out the form co mpletely before
sending.
• Send e-mail to the Customer Support Department at service@comtechefdata.com.
www.comtechefdata.com/support.asp:
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CRS-280L L-Band IF Switch for 1:N Redundancy Revision 1 Preface MN/CRS280L.IOM
Notes:
xiv

1.1 Overview

Chapter 1. INTRODUCTION

Figure 1-1. CRS-280L L-Band IF Switch for 1:N Redundancy
The CRS-280L L-Band IF Switch (Figure 1-1)
is designed to support redundancy systems featuring one Redundant (backup) Modem and up to 10 Traffic Modems (prime channels). Operation of the CRS-280L is controlled by the switching system to which it is connected . The CRS-280L is designed for use with the following Comtech EF Data products:
Modem Remarks Max 1:N Redundancy
CDM-570L Used with CRS-300 or CRS-500 1:10 CDM-600L CLM-9600L CDM-625 SLM-5650A SDM-300L3** SDM-2020D**
(L-Band)
** Indicates a Comtech EF Data legacy product that is no longer in production
Used with CRS-300 or CRS-500 w/CRS-350 (ESC only) 1:10
Used with SMS-7000** 1:8 Used with CRS-400 (HSSI)** 1:10
The CRS-280L replaces the following Comtech EF Data active or legacy products:
• IFU for SMS-7000 L-Band applications.
• CRS-280 IF switch for L-Band applications (CRS-300/CRS-500)
The CRS-280L features redundant power supplies with status LEDs on the front panel. It may be configured for 4 to 10 channel applications (SMS-7000 supports 8 channels max). Each channel
1–1
CRS-280L L-Band IF Switch for 1:N Redundancy Revision 1 Introduction MN/CRS280L.IOM
has a transmit section with TX input / uplink output and a receive section with Rx output / downlink input.
Figure 1-2 d system.
Test
Out
Backup
Modulator
Test
In
Rx1 Rx2 Rx3 Rx4 Rx5 Rx6 Rx7 Rx8 Rx9 Rx10
Splitter Splitter Splitter Splitter Splitter Splitte r Splitte r Splitter Splitter Splitter
epicts the system level block diagram for a CRS-280L-equipped 1:10 redundancy
Uplink Outputs
Tx2Tx1 Tx3 Tx4 Tx5 Tx6 Tx7 Tx8 Tx9 Tx10
A
B CRS
SMS
Prime Modulators
Downlink Inputs
Redundant
Power
Control
Interface
& Drivers
Backup
Demodulator
Figure 1-2. 1:10 Redundancy w/CRS-280L – System-level Block Diagram

1.1.1 Compatibility

1. The Comtech EF Data CRS-280L L-Band IF Switch is designed specifically as an accessory product for Comtech EF Data equipment. It is
CAUTION
operate with any other manufacturer's equipment.
2. The CRS-280L is not designed to convey DC power to external equipment such as LNBs or BUCs. Do (Type ‘N’) ports of the switch. In addition, the CRS-280L is not designed to
pass to 10 MHz reference or FSK signaling.
Prime Demodulators
not designed to
not apply DC power to the L-Band input and output
1–2
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