Comtech EF Data CRS-120 User Manual
CRS-120
1:1 Redundancy Switch
Installation and Operation Manual
IMPORTANT NOTE: The information contained in this document supercedes all previously published information
regarding this product. Product specifications are subject to change without prior notice.
Part Number MN/CRS120.IOM Revision 3
CRS-120
1:1 Redundancy Switch
Installation and Operation Manual
Comtech EF Data is an ISO 9001
Revision 3
Registered Company.
Copyright © Comtech EF Data, 2004. All rights reserved. Printed in the USA.
Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, 480.333.2200, FAX: 480.333.2161.
Part Number MN/CRS120.IOM
November 28, 2005
Customer Support
Contact the Comtech EF Data Customer Support Department for:
• Product support or training
• Information on upgrading or returning a product
• Reporting comments or suggestions concerning manuals
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
or, E-Mail can be sent to the Customer Support Department at:
service@comtechefdata.com
Contact us via the web at www.comtechefdata.com
1. To return a Comtech EF Data product (in-warranty and out-of-warranty) for
repair or replacement:
2. Request a Return Material Authorization (RMA) number from the Comtech EF
Data Customer Support Department.
3. Be prepared to supply the Customer Support representative with the model
number, serial number, and a description of the problem.
4. To ensure that the product is not damaged during shipping, pack the product in
its original shipping carton/packaging.
5. Ship the product back to Comtech EF Data. (Shipping charges should be
prepaid.)
For more information regarding the warranty policies, see Warranty Policy, p. xi.
.
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Table of Contents
CHAPTER 1. INTRODUCTION .................................................................................. 1–1
1.1 Introduction....................................................................................................................................1–1
1.2 Description ....................................................................................................................................1–2
1.3 Front Panel.................................................................................................................................... 1–5
1.4 Rear Panel ....................................................................................................................................1–5
1.5 Side Panel - Right Side ................................................................................................................. 1–6
CHAPTER 2. INSTALLATION.................................................................................... 2–1
2.1 Unpacking ..................................................................................................................................... 2–1
2.2 Mounting........................................................................................................................................2–1
2.2.1 CRS-120 Optional Mounting Panel..................................................................................... 2–2
2.2.2 CRS-120L Optional Mounting Panel................................................................................... 2–3
2.3 Connect External Cables ..............................................................................................................2–4
2.2.1 CRS-120 Wiring Connections ............................................................................................. 2–4
2.2.2 CRS-120L Wiring Connections ........................................................................................... 2–5
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CHAPTER 3. CONNECTOR PINOUTS ...................................................................... 3–1
3.1 External Modem Connections ....................................................................................................... 3–1
3.1.1 Alarm Interface Pin Assignment J1A, J1B ..........................................................................3–2
3.1.2 Online Status Connector Pin Assignments, J2 ...................................................................3–2
3.1.3 CRS-120 Only. TX-IF Connectors, J3, J4, J5, J6A, J6B ....................................................3–3
3.1.4 CRS-120L Only. SMA Connectors J3, J4, J5, J6A, J6B .................................................... 3–3
3.1.5 Standby TX IF Out Switch................................................................................................... 3–3
CHAPTER 4. OPERATION......................................................................................... 4–1
4.1 Introduction....................................................................................................................................4–1
4.2 1:1 Operation.................................................................................................................................4–2
4.3 1:1 Remote Control Operation ......................................................................................................4–3
CHAPTER 5. SUMMARY OF SPECIFICATIONS....................................................... 5–1
5.1 Summary of Specifications............................................................................................................ 5–1
5.1.1 CRS-120 Summary of Specifications ................................................................................. 5–2
5.1.2 CRS-120L Summary of Specifications ............................................................................... 5–3
5.2 1:1 Latching Operation..................................................................................................................5–4
5.3 Tx Online Status Contacts ............................................................................................................5–5
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Figures
Figure 1-1. 1:1 Redundancy Switch........................................................................................................................................ 1–1
Figure 1-2. Block Diagram ...................................................................................................................................................... 1–3
Figure 1-3. Dimensional Envelope of CRS-120 PL/10979-1................................................................................................... 1–6
Figure 1-4. Dimenional Envelope of CRS-120L...................................................................................................................... 1–7
Figure 2-1. CRS-120 Optional Mounting Panel....................................................................................................................... 2–2
Figure 2-2. CRS-120L Optional Mounting Panel..................................................................................................................... 2–3
Figure 2-3. CRS-120 Typical Installation ................................................................................................................................ 2–4
Figure 2-4. CRS-120L Typical Installation .............................................................................................................................. 2–5
Figure 4-1. Typical View of Modulator Front Panel................................................................................................................. 4–1
Tables
Table 3-1. CRS-120 Connectors and Pin Assignments.......................................................................................................... 3–1
Table 3-2. CRS-120L Connectors and Pin Assignments........................................................................................................ 3–1
Table 5-1. CRS-120 Summary of Specifications..................................................................................................................... 5–2
Table 5-2. CRS-120L Summary of Specifications................................................................................................................... 5–3
Table 5-3. 1:1 Latching Operation........................................................................................................................................... 5–4
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About this Manual
This manual provides installation and operation information for the Comtech EF Data
CRS-120/-120L 1:1 Redundancy Switch. This is a technical document intended for earth
station engineers, technicians, and operators responsible for the operation and
maintenance of the 1:1 Redundancy Switch.
Conventions and References
Cautions and Warnings
CAUTION indicates a hazardous situation that, if not avoided, may result in
minor or moderate injury. CAUTION may also be used to indicate other
CAUTION
WARN ING
unsafe practices or risks of property damage.
WARNING indicates a potentially hazardous situation that, if not avoided,
could result in death or serious injury.
Indicates information critical for proper equipment function.
IMPORTANT
Overview to Changes made to Revision 2
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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 English to Metric
conversions.
Trademarks
Other product names mentioned in this manual may be trademarks or registered
trademarks of their respective companies and are hereby acknowledged.
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 Customer
Support Department.
Safety Notices
IMPORTANT INFORMATION –
PLEASE READ BEFORE INSTALLATION AND USE
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Electrical Safety
The 1:1 redundancy switch has been shown to comply with the following safety standard:
EN 60950: Safety of Information Technology Equipment, including electrical
business machines
The equipment is rated for operation at +12 volts DC. It has a maximum
power consumption of 1.2 watts, and draws a maximum of 100 mA at
+12 volts DC. A single modulator is capable of supplying the entire
current.
The User should observe the following instructions:
Equipment Connection
The 1:1 redundancy switch is designed for operation ONLY with Comtech CDM-500,
CDM-550 or CDM-550T Modems. These Modems supply DC operating current
(electronically fused and protected) and control signals for the correct functioning of this
unit. Connection to other manufacturer’s equipment could result in damage to the unit.
Environmental
The 1:1 redundancy switch must not be operated in an environment where the unit is
exposed to extremes of temperature outside the ambient range 0 to 50°C (32 to 122°F),
precipitation, condensation, or humid atmospheres above 95% RH, altitudes
(un-pressurised) greater than 2000 metres, excessive dust or vibration, flammable gases,
corrosive or explosive atmospheres.
Operation in vehicles or other transportable installations which 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
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.
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EMC (Electromagnetic Compatibility)
The 1:1 redundancy switch has been demonstrated, by independent testing, to comply
with the following standards:
Emissions: EN 55022 Class B - Limits and methods of measurement of radio
interference characteristics of Information Technology Equipment.
FCC Part 15 Class B
Immunity: EN 50082 Part 1 - Generic immunity standard, Part 1: Domestic,
commercial and light industrial environment.
In order that the 1:1 redundancy switch continues to comply with these standards,
observe the following instructions:
• Connections to the transmit and receive IF ports (BNC female connectors) should
be made using a good quality coaxial cable - for example RG58/U (50 Ω) or
RG59/U (75 Ω).
• All 'D' type connectors attached to the unit must have back-shells which provide
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 its cover on at all times. If it becomes
necessary to remove the cover, the User should ensure that the cover is correctly
re-fitted before normal operation commences.
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Warranty Policy
This Comtech EF Data product is warranted against defects in material and workmanship
for a period of two years from the date of shipment. During the warranty period, Comtech
EF Data will, at its option, repair or replace products that prove to be defective.
For equipment under warranty, the customer is responsible for freight to Comtech EF
Data and all related custom, taxes, tariffs, insurance, etc. Comtech EF Data is responsible
for the freight charges only for return of the equipment from the factory to the customer.
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.
Limitations of Warranty
The foregoing warranty shall not apply to defects resulting from improper installation or
maintenance, abuse, unauthorized modification, or operation outside of environmental
specifications for the product, or, for damages that occur due to improper repackaging of
equipment for return to Comtech EF Data.
No other warranty is expressed or implied. Comtech EF Data specifically disclaims the
implied warranties of merchantability and fitness for particular purpose.
Exclusive Remedies
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.
Disclaimer
Comtech EF Data has reviewed this manual thoroughly in order that it will be an easy-touse guide to your equipment. All statements, technical information, and
recommendations in this manual and in any guides or related documents are believed
reliable, but the accuracy and completeness thereof are not guaranteed or warranted, and
they are not intended to be, nor should they be understood to be, representations or
warranties concerning the products described. Further, Comtech EF Data reserves the
right to make changes in the specifications of the products described in this manual at any
time without notice and without obligation to notify any person of such changes.
If you have any questions regarding your equipment or the information in this manual,
please contact the Comtech EF Data Customer Support Department.
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Notes:
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