Comtech EF Data SMS-451 User Manual
SMS-451
Satellite Switch
Model A, E, and T
Installation and Operation Manual
Part Number MN/SMS451. IOM Revision 0
This document supersedes the following documents:
SMS-451A, MN/SMS451A.IOM, Rev. 1 dated 4 August 1995
IMPORTANT
SMS-451E, MN/SMS451E.IOM, Rev. 1 dated 4 June 2001
SMS-451T, MN/SMS451T.IOM, Rev. 1 dated 24 August 1995
SMS-451
Comtech EF Data is an ISO 9001
Registered Company.
Satellite Switch
Model A, E, and T
Installation and Operation Manual
Part Number MN/SMS451.IOM
Revision 0
May 1, 2003
Customer Support
Contact the Comtech EF Data Customer Support Department for:
• Product support
• Information on returning/upgrading a product
• Product training
• Reporting comments or suggestions concerning manuals
An Comtech EF Data 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)
480.333.2161 (Main FAX Number)
480.333.2540 (Marketing FAX Number)
or, E-Mail can be sent to the Customer Support Department at:
service@comtechefdata.com
or, contact Customer Support Department at the web site:
www.comtechefdata.com
To return an 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. Be prepared to supply the Customer
Support representative with the model number, serial number, and a description
of the problem.
2. To ensure that the product is not damaged during shipping, pack the product in
its original shipping carton/packaging.
3. Ship the product back to Comtech EF Data. (Shipping charges should be
prepaid.)
For more information regarding the warranty policies, refer to the disclaimer page located
behind the title page.
ii
Table of Contents
CHAPTER 1. INTRODUCTION.................................................................................. 1–1
1.1 Description....................................................................................................................................................1–1
1.1.1 SMS-451A Description ..........................................................................................................................1–1
1.1.2 SMS-451E Description...........................................................................................................................1–5
1.1.3 SMS-451T Description...........................................................................................................................1–8
1.2 Specifications ..............................................................................................................................................1–10
1.2.1 SMS-451A Specifications.....................................................................................................................1–10
1.2.2 SMS-451E Specifications.....................................................................................................................1–11
1.2.3 SMS-451T Specifications.....................................................................................................................1–12
CHAPTER 2. INSTALLATION................................................................................... 2–1
2.1 Unpacking ..................................................................................................................................................... 2–1
2.2 System Installation....................................................................................................................................... 2–2
2.2.1 SMS-451A Installation ...........................................................................................................................2–2
2.2.2 SMS-451E Installation............................................................................................................................2–4
2.2.3 SMS-451T Installation............................................................................................................................2–5
2.3 External Connections................................................................................................................................... 2–6
2.3.1 SMS-451A External Connections...........................................................................................................2–6
2.3.1.1 Remote Interface (J5) ......................................................................................................................2–7
2.3.1.2 Modem Fault A and B (J8, J9) ........................................................................................................2–8
2.3.1.3 Receive IF Connectors (J19, J20, J21) ............................................................................................2–8
2.3.1.4 Transmit IF Connectors (J11, J13, J18)...........................................................................................2–8
2.3.1.5 Receive Data (J10, J12, J15) ...........................................................................................................2–9
2.3.1.6 Transmit Data (J1, J3, J6)................................................................................................................2–9
2.3.1.7 Transmit Clock (J2, J4, J7).............................................................................................................. 2–9
2.3.1.8 AC Power (J34, J24) .......................................................................................................................2–9
2.3.1.9 Ground (J25, J26)............................................................................................................................2–9
2.3.2 SMS-451E External Connections .........................................................................................................2–10
2.3.2.1 ECL Baseband DATA I/O (A, Common, and B).......................................................................... 2–11
2.3.2.2 Remote Connector.........................................................................................................................2–13
2.3.2.3 Demodulator Inputs (B, RX IF, and A).........................................................................................2–14
2.3.2.4 Modulator IF Ouputs (B TX IF, and B) ........................................................................................2–14
2.3.2.5 Power Connections........................................................................................................................ 2–14
2.3.2.6 Ground (ERDE).............................................................................................................................2–14
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2.3.3 SMS-45T External Connections ...........................................................................................................2–15
2.3.3.1 ESC "A" Connector Pin Assignments (J16 and J26) ....................................................................2–16
2.3.3.2 ESC "B" Connector Pin Assignments (J17 and 27) ......................................................................2–17
2.3.3.3 ESC "COMMON" Connector Pin Assignemnt (J18 and J28).......................................................2–18
2.3.3.4 Remote Interface OUT (J5 and J25)..............................................................................................2–19
2.3.3.5 AC Power (J2 and J24)..................................................................................................................2–19
2.3.3.6 Ground (J3) ...................................................................................................................................2–19
CHAPTER 3. OPERATION........................................................................................ 3–1
3.1 Overview .......................................................................................................................................................3–1
3.2 SMS-451A/E Front Panel ............................................................................................................................3–2
3.2.1 SMS-451A/E Front Panel Indicators ......................................................................................................3–2
3.2.2 SMS-451A/E Front Panel Switches........................................................................................................3–2
3.3 SMS-451A/E Local Control.........................................................................................................................3–3
3.3.1 SMS-451A/E Modulator Operation........................................................................................................ 3–3
3.3.2 SMS-4512A/E Demodulator Operation..................................................................................................3–4
3.4 SMS-451A/E Remote Operation.................................................................................................................3–4
3.5 SMS-451T Front Panel ................................................................................................................................3–5
3.5.1 SMS-451T ESC "1"................................................................................................................................3–5
APPENDIX A B-141-1 BREAKOUT PANEL .............................................................A–1
A.1 Overview .....................................................................................................................................................A–1
A.2 External Connections................................................................................................................................. A–3
A.2.1 ESC-1 Interface J1 ................................................................................................................................ A–3
A.2.2 8 kbps RS-422 Interface (P2)................................................................................................................ A–5
A.2.3 Alarm Outputs (TB1)............................................................................................................................A–5
A.2.4 Backward Alarm (TB2) .........................................................................................................................A-6
A.2.5 ADPCM Audio Connector (TB3)......................................................................................................... A–6
INDEX .......................................................................................................................... I–1
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Figures
Figure 1-1. SMS-451A ............................................................................................................................................ 1–1
Figure 1-2. SMS-451A System Block Diagram.......................................................................................................1–3
Figure 1-3. SMS-451A Switch Block Diagram........................................................................................................1–4
Figure 1-4. SMS-451E ............................................................................................................................................1–5
Figure 1-5. SMS-451E System Block Diagram .......................................................................................................1–6
Figure 1-6. SMS-451 Block Diagram with SDM-2020 Modulator and Demodulator with a HSSI Interface .......1–7
Figure 1-7. SMS-451T .............................................................................................................................................1–8
Figure 1-8. SMS-451T System Block Diagram .......................................................................................................1–9
Figure 2-1. Interconnect Diagram with EB-450 Buffers..........................................................................................2–2
Figure 2-2. SMS-451A Rear Panel View .................................................................................................................2–6
Figure 2-3. SMS-451E Rear Panel View................................................................................................................2–10
Figure 2-4. SMS-451T Front Panel View ..............................................................................................................2–15
Figure 3-1. SMS-451A Front Panel View................................................................................................................3–2
Figure 3-1A. SMS-451E Front Panel View............................................................................................................. 3-2
Figure 3-2. SMS-451T Front Panel View ................................................................................................................3–5
Figure A-1. B-141-1 Interface Breakout Panel .......................................................................................................A–1
Figure A-2. B-141-1 Interface Breakout Panel Schematic Diagram....................................................................... A–4
Tables
Table 1-1. SMS-451A Specifications.....................................................................................................................1–10
Table 1-2. SMS-451E Specifications .....................................................................................................................1–11
Table 1-3. SMS-451T Specifications .....................................................................................................................1–12
Table 2-1. SMS-451A Rear Panel Connectors......................................................................................................... 2–6
Table 2-2. SMS-451E Rear Panel Connectors .......................................................................................................2–10
Table 2-3. SMS-451T Rear Panel Connectors .......................................................................................................2–15
Table A-1. B-141-1 Breakout Panel Connectors.....................................................................................................A–2
v
About this Manual
This manual describes the installation and operation information for the Comtech EF
Data:
• SMS-451A 1:1 Satellite Modem Switch
• SMS-451E 1:1 ECL Modem Protection Switch
• SMS-451T 1:1 ESC ESC Protection Switch
This is a technical document intended for earth station engineers, and operators
responsible for the operation and maintenance of the switch.
Conventions Used in this Manual
Preface
Cautions, Warning, and Important Notes
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
IMPORTANT
unsafe practices or risks of property damage.
WARNING indicates a potentially hazardous situation that, if not avoided,
could result in death or serious injury.
IMPORTANT indicates a statement that is associated with the task
being performed.
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Metric Conversion
Metric conversion information is located on the inside back cover of this manual. This
information will assist the operator in cross-referencing English to Metric conversion.
Trademarks
Product names mentioned in this manual may be trademarks or registered trademarks of
their respective companies and are hereby acknowledged.
Related Documents
The following documents are referenced in this manual:
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ELECTRICAL SAFETY
The SMS-451 Satellite 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 over the range 85 to 264 volts AC. It has a maximum
power consumption of 60 watts.
FUSES
The SMS-451 Satellite Switch is fitted with two fuses, one each for line and neutral connections.
These are contained within the body of the IEC power connector, behind a small plastic flap.
• For 230 volt AC operation, use T0.75A, 20mm fuses.
• For 115 volt AC operation, use T1.25A fuses, 20mm fuses.
IMPORTANT
Environmental
The SMS-451 Satellite 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 (unpressurized) 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.
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Installation
The installation and connection to the line supply must be made in compliance to local or
national wiring codes and regulations.
The SMS-451 Satellite Switch 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.
The SMS-451 Satellite Switch is shipped with a line inlet cable suitable for use in the
country of operation. If it is necessary to replace this cable, 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, NFUSE, UL, CSA, OVE, CEBEC, NEMKO, DEMKO, BS1636A, BSI, SETI, IMQ,
KEMA-KEUR and SEV.
International Symbols:
Symbol Definition Symbol Definition
~
Alternating Current
Fuse
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.
Protective Earth
Chassis Ground
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Preface MN/SMS451.IOM
EMC (Electromagnetic Compatibility)
In accordance with European Directive 89/336/EEC, the SMS-451 Satellite Switch has
been shown, 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.
(Also tested to FCC Part 15 Class B)
Immunity: EN 50082 Part 1 - Generic immunity standard, Part 1: Domestic,
commercial and light industrial environment.
Additionally, the SDM-2020D has been shown to comply with the following standards:
EN 61000-3-2 Harmonic Currents Emission
EN 61000-3-3 Voltage Fluctuations and Flicker
EN 61000-4-2 ESD Immunity
EN 61000-4-4 EFT Burst Immunity
EN 61000-4-5 Surge Immunity
EN 61000-4-6 RF Conducted Immunity
EN 61000-4-8 Power frequency Magnetic Field Immunity
EN 61000-4-9 Pulse Magnetic Field Immunity
EN 61000-4-11 Voltage Dips, Interruptions, and Variations Immunity
EN 61000-4-13 Immunity to Harmonics
In order that the Modem continues to comply with these standards,
observe the following instructions:
IMPORTANT
• Connections to the transmit and receive IF ports (Type N and Type F, 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 rear panel 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.
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Preface MN/SMS451.IOM
Warranty Policy
This Comtech EF Data product is warranted against defects in material and workmanship
for a period of one year 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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xii
Chapter 1. INTRODUCTION
A
A
This manual describes the SMS-451 Satellite Switch (Model A, E, or T), referred to in
this document as “the switch.”
1.1 Description
The following descriptions are referenced to the applicable switch.
1.1.1 SMS-451A Description
SMS-451A
SATELLITE MODEM SWITCH
M ODULATOR
MANUAL ON-LI NE FAULT
ABB
A
UTO
DEM ODULATOR
MANUAL ON-LI NE FAULT
A
UTO
B
ABB
AA
S W I T C H S T A T U S
RE M O T E L O C A L P W R 1
R E M
B
L O C
P W R 2
Figure 1-1. SMS-451A
The SMS-451A 1:1 Satellite Modem Switch (Figure 1-1 ) is a fully-automated 1:1
satellite modem (protection) switch for the following Comtech EF Data modems:
• SDM-450
• SDM-9000 with the G.703 interface.
The switch provides redundancy for one prime modem with one backup modem.
1–1
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Introduction MN/SMS451.IOM
The switch contains:
• Circuitry for the data
• IF switching
• Remote and local status reporting
• Remote and local control
A 50
Ω system consists of the following assemblies:
Switch Top Assembly
1:1 Switch Modem PCB
Chassis Assembly
Front Panel Assembly
Power Supply
Cable Assembly (75Ω)
Cable Assembly (75Ω)
Cable Assembly, DC Power
AS/1781-1
AS/1760-1
AS/1780
AS/1090
PS/AC40W03P02
CA/1798B
CA/1799B
CA/1772B
A 75
Ω system consists of the following assemblies:
Switch Top Assembly
1:1 Switch Modem PCB
Chassis Assembly
Front Panel Assembly
Power Supply
Cable Assembly (50Ω)
Cable Assembly (75Ω)
Cable Assembly (75Ω)
Cable Assembly, DC Power
AS/1781-2
AS/1760-2
AS/1780
AS/1090
PS/AC40W03P02
CA/1800B
CA/1799B
CA/1798B
CA/1772B
Additional versions of the SMS-451 also support the SDM-2020 Modulator and
demodulator:
• SDM-2020 with G.703 Interface
• SDM-2020 with ASI Interface
IMPORTANT
The 70/140 MHZ and L-Band versions of the SMS-451 are available to
support the SDM-2020 Demodulator. The TX IF of the SMS-451 is
alaways 70/140 MHz.
1–2
SMS-451 Sateliite Switch Revision 0
A
A
XDTA
XDTA
A
A
X
X
R
A
R
R
XDTARX
X
XDTA
A
X
R
Introduction MN/SMS451.IOM
The system block diagram (Figure 1-2) shows how the switch provides the interface
between the prime modem, the terminal, and the customer equipment.
B-141-1
BREAKOUT PANEL
TX DA T
RX IF
TX CL OCK J4
CA/2674
REMOTE
CA/037-8
INTERFACE
J28
SMS451T
J3
J20
REMOTE INTERF ACE
J5
J25
J26
ESC 2
CA/0737- 4
J27
ESC 2
B
J1
J19
J7
J2
CA/0813-8J6
75 OHM - BNC
50 OHM - BNC
CP2J21
CA/0813-8
J12
J11
J14 TX
EXT
CLK
ESC
TER
SMS-451A
SDM-450
RX RF
J9 J10 J12 J11
J10J5J13 J8
R
RX
CLKTXCLK
ESC-450
FRAMING
SWITCH
T
FAULT
TX RF
TWI NA
CABLES
TER
CA/2590
LM J4
FAULT
J14
CP1
*
J9R
UNIT
75 OHM - BNC
50 OHM - BNC
CA/0813-8
CA/0737-4
CA/0813-8
CP2
J12
J14
EXT
CLK
J11
ESC
TX
TER
SDM-450
RX RF
J9 J10 J12 J11
J10 J5 J13 J8
R
CLK
ESC-450
FRAMING
UNIT
TX RF
SWITCH
FAULT
TWI NAX
CABLES
T
TER
LM J4
CP1
75 OHM - BNC
50 OHM - BNC
J14
*
J9R
B
T
CLK
Figure 1-2. System Block Diagram
J9 J8
CA/2590
FAULT
B
CA/0813-8
CA/0813-8
75 OHM - BNC
50 OHM - BNC
J15
J10
J18
J11
J12
RX DA TA
J13
TX IF
1–3
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Introduction MN/SMS451.IOM
A block diagram of the switch is shown in Figure 1-3.
TX IF A
TX IF
COM
TX DATA
COM
TX IF A
TX DATA A
TX DATA B
TX CLOCK
COM
RX IF A
RX IF B
RX DATA A
RX DATA B
REMOTE
ALARMS
MOD FAULT
DMD FAULT
COM FAULT
FAULT
RELAYS
CONTROL
FRONT PANEL
LOGIC
Figure 1-3. SMS-451A Switch Block Diagram
TX CLOCK A
TX CLOCK B
RX IF COM
RX DATA COM
1–4
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Introduction MN/SMS451.IOM
1.1.2 SMS-451E Description
SMS-451E ECL MODEM
PROTECTION SWITCH
The SMS-451E 1:1 ECL Modem Protection Switch (Figure 1-4) is a fully automated 1:1
ECL protection switch for the Comtech EF Data SDM-9000 satellite modem.
IMPORTANT
The switch is used to protect SDM-9000 modems using an ECL, Positive Emitter
Coupled Logic (PECL), or MIL-STD-188 terrestrial interface. The switch provides
redundancy for one prime modem with one backup modem.
The switch contains circuitry for:
• Data and IF switching
• Remote and local status reporting
• Remote and local control
The switch can be supplied with any of the following baseband interfaces:
• ECL
• PECL (positive level ECL)
• MIL-STD-188
The switch top assembly has the following configurations:
MODULATOR
MANUAL
ON-LINE FAULT
A
AUTO
A
B
B
MANUAL
A
A
B
DEMODULATOR
ON-LINE FAULT
AUTO
B
SWITCH ST ATUS
REM O T E
A
A
B
B
L O C A L P W R 1
R E M
L O C
Figure 1-4. SMS-451E
ECL/HSSI connection also is available for the SDM-2020 Modems.
Operation Input Frequency Interface
Modem
(Dependent)
Mod/Demod
(Independent)
AC 75Ω
AC 50Ω
DC 50Ω
DC 75Ω
70 ECL
140 PECL
188
P W R 2
1–5
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