Comtech EF Data Radyne STS11 User manual

MN-STS11-11LRevision 0
STS11/STS11L
Solid-State Transfer Switch
Installation and Operation 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-STS11-11
Revision 0

Copyright © Comtech EF Data, 2011. All rights reserved. Printed in the USA.
Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, 480.333.2200, FAX: [phone]

iii
Table of Contents
CHAPTER 1. INTRODUCTION .............................................................................................1–1
1.1 Overview......................................................................................................................................1–1
CHAPTER 2. INSTALLATION ..............................................................................................2–1
2.1 Installation Requirements..........................................................................................................2–1
2.2 Unpacking....................................................................................................................................2–2
2.3 Test Data Sheet............................................................................................................................2–2
2.4 System Connections ....................................................................................................................2–2
2.5 Connecting to DM240-PIIC Digital Modulators......................................................................2–2
CHAPTER 3. OPERATION ....................................................................................................3-1
3.1 Solid-State Transfer Switch Operation......................................................................................3-1
3.2 Operating Procedures..................................................................................................................3-2
3.3 Solid-State Transfer Switch Backup Operation........................................................................3-2
CHAPTER 4. MAINTENANCE AND TROUBLESHOOTING.................................................4-1
4.1 Basic Troubleshooting and Maintenance...................................................................................4-1
4.2 Basic User Checks........................................................................................................................4-1
4.2.1 Checking the Cabling and Connectors...................................................................................4-1
CHAPTER 5. TECHNICAL SPECIFICATIONS......................................................................5-1
5.1 Introduction..................................................................................................................................5-1
5.2 General Specifications .................................................................................................................5-1
5.3 Power and Environmental...........................................................................................................5-1
5.4 Physical .........................................................................................................................................5-1

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xix
PREFACE
About this Manual
This manual provides installation and operation information for the Comtech EF Data Radyne
STS11/STS11L Solid-State Transfer Switch. This document is intended for persons responsible
for the operation and maintenance of the unit.
Conventions and References
Cautions and Warnings
WARNING indicates a potentially hazardous situation that, if not avoided, could
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.
IMPOR TANT or NOTE
indicates information critical for proper equipment function,
or a s tatement that is as s oc iated with the tas k being performed.
Trademarks
Product names mentioned in this manual may be trademarks or registered trademarks of their
respective companies and are hereby acknowledged.

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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.
Installation
The installation and connection to the line supply must be made in compliance to local or national
wiring codes and regulations.
The unit is designed for connection to a power system that has separate ground, line and neutral
conductors. The equipment is not designed for connection to power system that has no direct
connection to ground.
International Symbols
Symbol Definition Symbol Definition
~ Alternating Current
Protective Earth
Fuse Chassis Ground
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.
RoHS Compliancy
This unit satisfies (with exemptions) the requirements specified in the European Union Directive on
the Restriction of Hazardous Substances, Directive 2002/95/EC, (EU RoHS).

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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.
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.

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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 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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Customer Support
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 Customer 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 Authorization (RMA) number from the Comtech EF Data
Customer Support representative.
•Pack the product in its original shipping carton/packaging to ensure that 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 www.comtechefdata.com/support.asp:
•Click on “Return Material Authorization” for detailed instructions on our return
procedures.
•Click on the “RMA Request Form” hyperlink, then fill out the form completely before
sending.
•Send e-mail to the Customer Support Department at [e-mail].
For information regarding this product’s warranty policy, refer to the Warranty Policy, p. xxiii.

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Notes:

1–1
Chapter 1. INTRODUCTION
1.1 Overview
The STS11 (70/140 MHz) and STS11L (L-Band) Solid-State Transfer Switches (Figures
1-1 and 1-2) provide simple backup redundancy protection for the DM240-PIIC
Modulators. Their straightforward design and easy access to connectors and LEDs allow
for ease of use.
Figure 1-1. STS11 Solid-State Transfer Switch
Figure 1-2. STS11L L-Band Solid-State Transfer Switch

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2–1
Chapter 2. INSTALLATION
This section provides unpacking and installation instructions, and a description of
external connections and backward alarm information.
2.1 Installation Requirements
The STS11 and STS11L Solid-State Transfer Switches are designed for installation in
any convenient location (with the included brackets). They stand one rack unit (1RU)
high (1.75 inches/4.45 cm) vertically, 4.4 inches (11.18 cm) wide, and 3.4 inches (8.63
cm) deep.
There are no user-serviceable parts or configuration settings
located inside any Solid-State Transfer Switch Chassis.
There is a potential shock hazard internally at the power
supply module. DO NOT open the Solid-State Transfer
Switch Chassis under any circumstances.
Before initially applying power to the unit, it is a good idea to
disconnect the transmit output from the operating ground
station equipment. This is especially true if the current Solid-
State Transfer Switch configuration settings are unknown,
where incorrect settings could disrupt existing
communications traffic.

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2.2 Unpacking
The STS11/STS11L Solid-State Transfer Switch was carefully packaged to avoid damage
and should arrive complete with the following items for proper installation:
•STS11 or STS11L Solid-State Transfer Switch Unit
•STS11 or STS11L Test Data Sheet
•Interconnect Cables and Materials as Required
•Mounting Brackets
•Installation and Operation Manual
2.3 Test Data Sheet
Each STS11/STS11L Solid-State Transfer Switch is shipped with a Test Data Sheet.
This report contains information on the results of the Switch quality control testing. The
report also includes information pertaining to the system settings that were made at the
factory. Radyne Inc. recommends that the user save this report for future reference.
2.4 System Connections
For initial Solid-State Transfer Switch setup and configuration, perform the following
procedure:
1) Interconnect the units as shown in the figures below.
2) Proceed to Section 4, User Interface for information on the Solid-State Transfer
Switch controls and indicators.
2.5 Connecting to DM240-PIIC Digital Modulators
Figure 2-1 illustrates the cable connections between the STS11 and two DM240-PIIC
units. Refer to Table 2-1 for cable part numbers.

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Figure 2-1. STS11 Solid-State Transfer Switch to DM240 Connections
DM240 Prime
DM240 Backup

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Figure 2-2. STS11L Solid-State Transfer Switch to DM240 Connections
Table 2-1. Interconnection Cable Part Numbers
Cable Quantity Name Part Number
A 3 Control Cable (DB-9 Straight Cable) CA/3677-1
B 2 IF Cable (75-Ohm BNC) CA/3598-36
C 2 L-Band Cable (50-Ohm SMA) CA/LMR200SMA3FT

3-1
Chapter 3. OPERATION
3.1 Solid-State Transfer Switch Operation
A block diagram of the signal flow is shown in Figure 3-1 (70/140 MHz) and
Figure 3-2 (L-Band) below.
Figure 3-1. STS11 Functional Block Diagram
DM240
(Prime)
DM240
(Backup)

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Figure 3-2. STS11L Functional Block Diagram
3.2 Operating Procedures
The Solid-State Transfer Switch is designed to require minimal operator
intervention and control during normal operation. After initial setup, the unit
should operate in a relatively ‘transparent’ manner, providing trouble-free backup
of the online modulators
3.3 Solid-State Transfer Switch Backup Operation
Each modulator monitors the fault status of the other modulators through the
switch. An additional connector has been added to the standard DM240 to
provide a wiring port to the external IF switch. Each modulator is capable of
powering the IF switch through a current limited, diode or’ed power signal.
Either of the DM240s is also capable of commanding the switch to the prime or
backup state, as well as monitoring in which state it is. In normal operation, the
M&C in the backup modulator monitors the prime for faults. If one is detected,
it will automatically cause the IF switch to place the backup on-line. The switch
DM240
(Prime)
DM240
(Backup)

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is non-revertive. That is, once a switch occurs, it requires a manual command
(either through the M&C or from the front panel) to return the prime unit on-line.
This will be the default operation, but the switching software is capable of
implementing revertive switching as well. Either modulator will be capable of
changing the state of the IF switch (assuming it is not faulted). This can be done
remotely or from the front panel. Remote control will occur through the standard
Ethernet M&C interface implementing SNMP. The switch connectors are listed
in Tables 3-1 and 3-2.
Table 3-1. STS11 Connectors
Connector
ID Nomenclature Description
J1 Prime Mod Control 9-Pin D-Sub Control Connector From Prime Modulator
J2 Backup Mod Control 9-Pin D-Sub Control Connector From Backup Modulator
J3 Switch Status
Output 9-Pin D-Sub Switch Status Form-C Relay Outputs
J4 Prime Mod Input 75 Ohm, BNC From Prime Modulator
J5 Backup Mod Input 75 Ohm, BNC From Backup Modulator
J6 On-Line Output 75 Ohm Output of On-Line Modulator to Uplink Chain.
J7 Off-Line Output 75 Ohm Output of Monitor Port of Off-Line Modulator
Table 3-2. STS11L Connectors
Connector
ID Nomenclature Description
J1 Prime Mod Control 9-Pin D-Sub Control Connector From Prime Modulator
J2 Backup Mod Control 9-Pin D-Sub Control Connector From Backup Modulator
J3 Switch Status
Output 9-Pin D-Sub Switch Status Form-C Relay Outputs
J7 Prime Mod Input 50 Ohm, SMA From Prime Modulator
J5 Backup Mod Input 50 Ohm, SMA From Backup Modulator
J6 On-Line Output 50 Ohm, SMA Output of On-Line Modulator to Uplink Chain.
J4 Off-Line Output 50 Ohm, SMA Output of Monitor Port of Off-Line Modulator
Each modulator has a 9-Pin D-Sub Connector for the switch. A 1:1 cable is
connected from each modulator to the switch. The pinout for the control
connector is listed in Table 3-3.

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Table 3-3. Switch Control Pinout
Pin No. Signal Name Direction Description
5 Signal Ground Input Modulator GND
9 Backup Select Output One modulator is designated as Backup. This line
is tied low on the Backup Mod Control connector.
1 +DC Input +12V DC Power
2 nPrime_Sel Input Forces On-Line Output to Prime
7 nBackup_Sel Input Forces On-Line Output to Backup
8 Fault-In Input Fault Output From Modulator
4 Fault-Out Output Connects to Fault-In Monitor on Modulator
3 Switch-State Output
Switch State Monitor.
Logic '1' = Prime Online
6 NC --- ---
An additional 9-Pin D-Sub Connector is supplied for switch monitoring. The I/O
on this connector comes from a Form-C relay. The pinouts for the monitor
connector is listed in Table 3-4.
Table 3-4. Switch Monitor Pinout
Pin No. Signal Name Description
4 Signal Ground Switch GND
1 Relay 1 NO
Relay Normally Open Contact
(Closed When the Backup Modulator is On-Line)
3 Relay 1 NC
Relay Normally Closed Contact
(Closed When the Prime Modulator is Online)
2 Relay 1 C Relay Common Contact
7 Relay 2 NO Relay Normally Open Contact
9 Relay 2 NC Relay Normally Closed Contact
8 Relay 2 C Relay Common Contact
5 NC ---
6 NC ---