Comtech EF Data CRS-170 User manual

Part Number MN/CRS170.IOM Revision 1
CRS
-
170
1:1 Redundanc
y
Switch
Accessory Product for use only with
Comtech EF Data CDM-600L and SDM-300L3 Modems
(Modem Firmware and Hardware Requirements Apply)

CRS-170
1:1 Redundancy Switch
Accessory Product for use only with
Comtech EF Data CDM-600L and SDM-300L3 Modems
(Modem Firmware and Hardware Requirements Apply)
Part Number MN/CRS170.IOM
Revision 1
October 4, 2004
Comtech EF Data is an ISO 9001
Registered Company.

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
Contact Customer Support using any of the following methods:
Email:
[email protected]
Mail: Comtech EF Data
Customer Support Department
2114 West 7th Street
Tempe, Arizona 85281 USA
Internet: www.comtechefdata.com
Phone: [phone] (Main Comtech EF Data
Number)
480. 333.4357 (Customer Support Desk)
Fax: [phone]
To return a Comtech EF Data product (in-warranty and out-of-warranty) for repair or
replacement:
1. Request a Return Material Authorization (RMA) number from the Comtech EF Data
Customer Support Department.
2. Be prepared to supply the Customer Support representative with the model number,
serial number, and a description of the problem.
3. To ensure that the product is not damaged during shipping, pack the product in its
original shipping carton/packaging.
4. Ship the product back to Comtech EF Data. (Shipping charges should be prepaid.)
For more information regarding the warranty policies, see Warranty Policy, p. 13.

7
Table of Contents
CHAPTER 1. INTRODUCTION .................................................................................. 15
CHAPTER 2. INSTALLATION.................................................................................... 16
2.1 Unpacking......................................................................................................................16
2.2 Mounting ........................................................................................................................20
2.3 Cabling with CDM-600L and CRS-150 .........................................................................21
2.4 Cabling with SDM-300L3 and SMS-301 .......................................................................22
CHAPTER 3. FUNCTIONAL DESCRIPTION ............................................................... 23
3.1 Operation with CDM-600L and CRS-150 .....................................................................24
3.2 Operation with SDM-300L3 and SMS-301 ...................................................................25
CHAPTER 4. CONNECTOR PINOUTS ...................................................................... 27
4.1 Modem Side Connectors ..............................................................................................27
4.1.1 Modem A Control Connector .....................................................................................28
4.1.2 Modem B Control Connector .....................................................................................29
4.1.3 Modem Side Type N Connector................................................................................30
4.2 Antenna Side Connectors ............................................................................................31
CHAPTER 5. SUMMARY OF SPECIFICATIONS....................................................... 33

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Figures
Figure 1. Rack Mounting Kits.....................................................................................................20
Figure 2. Connection Diagram, CDM-600L and CRS-150.........................................................21
Figure 3. Connection Diagram, SDM-300L3 and SMS-301.......................................................22
Figure 4. Modem Side of Module...............................................................................................27
Figure 5. Antenna Side Connectors and Ground Lug................................................................31
Tables
Table 1. CRS-170 Application Summary ...................................................................................17
Table 2. J3A - Modem A Control Connector Pin Assignments ..................................................28
Table 3. J3B - Modem B Control Connector Pin Assignments ..................................................29
Table 4. Modem Side Type N Connectors.................................................................................30

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ABOUT THIS MANUAL
This manual provides installation and operation information for the Comtech EF Data
CRS-170 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 CRS-170 1:1 Redundancy Switch.
RELATED DOCUMENTS
Comtech EF Data CDM-600 Satellite Modem Installation and Operation Manual
Comtech EF Data SDM-300L3 Satellite Modem Installation and Operation Manual
CONVENTIONS AND REFERENCES
CAUTIONS AND WARNINGS
IMPORTANT
Indicates information critical for proper equipment function.
WARNING
Indicates a potentially hazardous situation that, if not avoided, could result in
death or serious injury.
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 are equivalent to the Electronic Industries
Association (EIA). Comtech EF Data will reference RS designator throughout the
manual.
TRADEMARKS
All product names mentioned in this manual may be trademarks or registered trademarks
of their respective companies and are hereby acknowledged.

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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.
EMC COMPLIANCE
This is a Class B product. In a domestic environment, it may cause radio interference that
requires the user to take adequate protection measures.
EN55022 COMPLIANCE
This equipment meets the radio disturbance characteristic specifications for information
technology equipment as defined in EN55022.
EN50082-1 COMPLIANCE
This equipment meets the electromagnetic compatibility/generic immunity standard as
defined in EN50082-1.
In order that the CRS-170 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 (50Ω) or RG59/U
(75Ω).
 All 'D' type connectors attached to the unit must have back-shells that 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.
FEDERAL COMMUNICATIONS COMMISSION (FCC)
This equipment has been tested and found to comply with the limits for a Class B 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.

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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.
Note: To ensure compliance, properly shielded cables for DATA I/O shall be used. More
specifically, these cables shall be shielded from end to end, ensuring a continuous shield.
SAFETY COMPLIANCE
EN 60950
Applicable testing is routinely performed as a condition of manufacturing on all units to
ensure compliance with safety requirements of EN60950.
The equipment is rated for operation at +12 volts DC and -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 CDM-600 modem, or a pair of these
modems.
This equipment meets the Safety of Information Technology Equipment specification as
defined in EN60950.
EQUIPMENT CONNECTION
The CRS-170 is designed for operation ONLY with Comtech EF Data 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. The CRS-170 is not compatible with other
Comtech EF Data modems.

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ENVIRONMENTAL
The CRS-170 must not be operated in an environment where the unit is exposed to
extremes of temperature outside the ambient range 0 to 500C (32 to 1220F), precipitation,
condensation, or humid atmospheres above 95% RH, altitudes (un-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
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.
LOW VOLTAGE DIRECTIVE (LVD)
The following information is applicable for the European Low Voltage Directive
(EN60950):
<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.
Note: For additional symbols, refer to “Cautions” listed earlier in this preface.