Comtech EF Data SMS-7000 User Manual

SMS-7000
p
Modem Protection Switch
Installation and O
Part Number MN/SMS7000.IOM Revision 3
eration Manual

Errata A

Comtech EF Data Documentation Update
Subject:
Date: Document:
Part Number: Collating Instructions:
Comments:
The following changes provide updated information for Figure2-2. This information will be incorporated into the next revision.
Changes to Table 3-4 (Interface Configuration Jumper Settings)
October 5, 2001 SMS-7000 Modem Protection Switch Installation and Operation Manual, Revision 3, September 30, 1999 MN/SMS7000.EA3 Attach this page to page 2-11
Change Specifics:
See following page…….
Filename: T_ERRATA
1
10-32x ½ Socket Head Screw (4)
Latch Striker Plate FP/5154
Fiber Washers (2)
Left Hinge Mounting Plate FP/5152-2
Black Latch Knobs LATCH04 (2)
1/4-20x1/4 Socket Head Shoulder Screw (2)
Hinge Base FP/5151
#10 Flat Washers (4)
IFU
DSU
Hinge Latch Panel FP/5153
Fiber Washers (2)
Latch Striker Plate FP/5154
Filename: T_ERRATA
Remove the Po wer Supplies to install from the inside:
#10 Flat Washer s(4)
(4) 10-32x ½ So cket Head scre ws
Right Hinge Mounting Plate FP/5152-1
Figure 0-1. Back Mount (Hinge) Installation
2
1/4-20x1/4 Socket Head Shoulder Screw (2)
Comtech EFData Documentation Update
Subject: Date:
Document: Part Number:
Collating Instructions:
Comments:
The following changes provide updated information to Table 3-4.
Backup Mod #n Backup Demod #n Backup #n Switching Mode Independent
Prime Mod #n Prime Mod #1, 2, 3, 4 Priority Prime Mod #5, 6 Priority Prime Mod #7, 8 Priority Low Prime #5, 6, 7, 8 Multiplexer No Prime Mod #1 through 7 Delay None D&I #1, 2, 3, 4 Unbalanced Prime Mod # 8 Delay Prime Demod #n Prime Demod #1, 2, 3, 4 Priority Prime Demod #5, 6 Priority Prime Demod #7, 8 Priority Low Insert Data Input #5, 6, 7, 8 Prime Demod # 1 through 5 Delay None
Prime Mod #n Prime Demod #n Prime Mod #1, 2, 3, 4 Priority Prime Mod #5, 6 Priority Prime Mod #7, 8 Priority Low Insert Data Input #1, 2, 3, 4 Normal Prime Mod #1 through 5 Delay None D&I #5, 6, 7, 8 Prime Mod #6, 7 Delay Prime Mod # 8 Delay
Operation Mode Time Current Parity Even
Date Current Remote Type EIA-485 (2­Remote Baud Rate 9600 bit/s Mode Control Baud Rate 9600 bit/s

Errata B

Changes to Table 3-4 (Initial Defaults) October 5, 2001
SMS-7000 Modem protection Switch Installation and Operation Manual, Rev. 3, dated September 30, 1999 MN/SMS7000.EB3 Attach this page to page 3-33
Table 3-4. Initial Defaults
Configuration Backup #n (n = 1 or 2)
Off Off
Configuration Independent Prime #n (n = 1 through 8)
Off Low Low
None Off Low Low
Configuration Dependent Prime #n (n = 1 through 8)
Off Off Low Low
None None
Configuration Operation Mode
Manual
Utility System
Backup #1 Multiplexer Backup #2 Mulitiplexer No
Prime Demod #6, 7 Delay Prime Demod #8 Delay Prime #1, 2, 3, 4 Multiplexer
External Clock #1, 2, 3, 4 Unbalanced Insert Data Input #1, 2, 3, 4 Normal D&I #5, 6, 7, 8 External Clock #5, 6, 7, 8
Prime #1, 2, 3, 4 Multiplexer Prime #5, 6, 7, 8 Multiplexer No D&I #1, 2, 3, 4 Unbalanced External Clock #1, 2, 3, 4 Unbalanced
External Clock #5, 6, 7, 8 Insert Data Input #5, 6, 7, 8
No
None None No
Unbalanced Unbalanced Normal
No
Unbalanced Unbalanced Normal
Wire)
Filename: T_ERRATA
1

Errata C

Comtech EFData Documentation Update
Subject:
Date: Document:
Part Number: Collating Instructions:
Related Documents
The following documents are referenced in this manual:
Department of Defense (DOD) MIL-STD-188-114A, “Electrical Characteristics of Digital Interface Circuits”
M-2000 Multiplexer Installation and Operation Manual
Comtech EF Data CRS-280L 1:N Redundancy Switch Installation and Operation Manual
Changes to Related Documents
October 13, 2003 SMS-7000 Modem protection Switch Installation and Operation Manual, Rev. 3, dated September 30, 1999 MN/SMS7000.EC3 Attach this page to page viii
Filename: T_ERRATA 1
Comtech EFData is an ISO 9001
Registered Company.
SMS-7000
Modem Protection Switch
Installation and Operation Manual
Part Number MN/SMS7000.IOM
Revision 3
September 30, 1999
Copyright © Comtech EFData, 2000. All rights reserved. Printed in the USA.
Comtech EFData, 2114 West 7th Street, Tempe, Arizona 85281 USA, (480) 333-2200, FAX: (480) 333-2161.

Customer Support

Contact the Comtech EFData 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 EFData Attention: Customer Support Department 2114 West 7th Street Tempe, Arizona 85281 USA
(480) 333-2200 (Main Comtech EFData 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 EFData product (in-warranty and out-of-warranty) for repair or replacement:
2. Request a Return Material Authorization (RMA) number from the Comtech EFData 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 EFData. (Shipping charges should be prepaid.)
For more information regarding the warranty policies, see Warranty Policy, p. xii.
.
ii Rev. 3

Table of Contents

Customer Support ...................................................................................................................................................... ii
Overview of Changes to Previous Edition ............................................................................................................. viii
Overview of Changes to Previous Edition ............................................................................................................. viii
About this Manual................................................................................................................................................... viii
EMC Compliance ........................................................................................................................................................x
Warranty Policy........................................................................................................................................................ xii
CHAPTER 1. INTRODUCTION.......................................................................................................... 1–1
1.1
Overview......................................................................................................................................................1–2
1.1.1 Compatibility ...........................................................................................................................................1–2
1.1.2 Data Formats............................................................................................................................................1–4
1.1.3 Options.....................................................................................................................................................1–5
1.1.4 Protection Switch.....................................................................................................................................1–6
1.2 Description ..................................................................................................................................................1–6
1.2.1 Switch Controller Unit (SCU)..................................................................................................................1–8
1.2.2 Data Switch Unit (DSU) ..........................................................................................................................1–9
1.2.3 IF Switch Unit (IFU)..............................................................................................................................1–11
1.3 Specifications ............................................................................................................................................1–12
CHAPTER 2. INSTALLATION ...........................................................................................................2–1
2.1
Unpacking ...................................................................................................................................................2–1
2.2 Equipment Inspection ................................................................................................................................2–2
2.2.1 Included Parts...........................................................................................................................................2–2
2.2.2 Back Mount (Hinged) Hardware Kit........................................................................................................2–3
2.2.3 Top Mount Hardware Kit.........................................................................................................................2–4
2.2.4 Cables.......................................................................................................................................................2–5
2.2.5 Tools Required.........................................................................................................................................2–6
Rev. 3 iii
Preface SMS-7000 Modem Protection Switch
2.3 Mounting .....................................................................................................................................................2–7
2.3.1 Description...............................................................................................................................................2–7
2.3.1.1 Top Mount.......................................................................................................................................2–7
2.3.1.2 Back Mount .....................................................................................................................................2–7
2.3.2 Installation................................................................................................................................................2–8
2.3.2.1 Switch Control Unit.........................................................................................................................2–8
2.3.2.2 Top Mount Installation....................................................................................................................2–8
2.3.2.3 Back Mount Installation ................................................................................................................2–10
2.4 Cable Installation......................................................................................................................................2–13
2.4.1 Interconnecting the Switch Components................................................................................................2–13
2.4.1.1 SCU (J4) to DSU (J11) Interface...................................................................................................2–15
2.4.1.2 Remote Connection .......................................................................................................................2–15
2.4.1.3 DSU (J12) to IFU (J1)...................................................................................................................2–16
2.4.1.4 DSU J9 (BU1) Modem Connector to Backup Modem..................................................................2–16
2.4.1.5 DSU JI CH to Prime Modem.........................................................................................................2–16
2.4.1.6 IFU Connections (CP17 through CP36)........................................................................................2–17
2.5 Configuration Setup .................................................................................................................................2–17
2.5.1 Configure Rack Setup............................................................................................................................2–17
2.5.2 Trouble Shoot Configuration .................................................................................................................2–19
2.6 DSU Data Connections (J1 through J10)................................................................................................2–20
2.6.1 SCU Rear Panel .....................................................................................................................................2–22
2.6.1.1 User Remote (J1)...........................................................................................................................2–22
2.6.1.2 Modem Remote (J2)......................................................................................................................2–23
2.6.1.3 Switch Faults (J3)..........................................................................................................................2–23
2.6.1.4 Prime Mod (Online) Status (J6) ....................................................................................................2–24
2.6.1.5 Prime Mod (Online) Status (J5) ....................................................................................................2–25
2.6.2 DSU Terrestrial Data Interfaces.............................................................................................................2–26
2.6.2.1 EIA-422/8 kbit/s Terrestrial Data (J6)...........................................................................................2–27
2.6.2.2 V.35/EIA-232-C Terrestrial Data (J1)...........................................................................................2–29
2.6.2.3 Engineering Service Channel Data (J4).........................................................................................2–30
2.6.2.4 Alarms (J2)....................................................................................................................................2–31
2.6.2.5 ADPCM Audio Data (J5)..............................................................................................................2–32
2.6.2.6 Balanced G.703/Drop & Insert Data (J3) ......................................................................................2–33
2.6.2.7 Unbalanced Data Ports ..................................................................................................................2–34
2.6.3 IFU Uplink and Downlink IF (CP1 through CP16) ...............................................................................2–35
CHAPTER 3. OPERATION ................................................................................................................3–1
3.1
Configuration..............................................................................................................................................3–1
3.1.1 Backup Modems ......................................................................................................................................3–2
3.1.2 Prime Modems .........................................................................................................................................3–2
3.2 Front Panel..................................................................................................................................................3–2
3.2.1 LED Indicators.........................................................................................................................................3–3
3.2.2 Front Panel Controls ................................................................................................................................3–4
3.3 Menu System...............................................................................................................................................3–5
3.4 Front Panel Menu.......................................................................................................................................3–7
3.4.1 Configuration Backup 1 and 2 Menu.......................................................................................................3–9
3.4.2 Configuration Independent Prime 1 through 8 Menu.............................................................................3–11
iv Rev. 3
SMS-7000 Modem Protection Switch Preface
3.4.3 Configuration Dependent Prime 1 through 8 Menu...............................................................................3–15
3.4.4 Configuration Load/Verify Menu ..........................................................................................................3–17
3.4.5 Configuration Operation Mode Menu....................................................................................................3–19
3.4.6 System Status Switching Menu..............................................................................................................3–21
3.4.7 System Status Configuration Menu........................................................................................................3–23
3.4.8 Faults/Alarms Menu...............................................................................................................................3–25
3.4.9 Stored Faults/Alarms Menu ...................................................................................................................3–27
3.4.10 Utility System Menu..........................................................................................................................3–29
3.5 Setup and Configuration..........................................................................................................................3–30
3.5.1 Utility Setup...........................................................................................................................................3–30
3.5.2 Configuration .........................................................................................................................................3–30
3.5.2.1 Backup...........................................................................................................................................3–30
3.5.2.2 Prime .............................................................................................................................................3–31
3.5.2.3 Load/Verify ...................................................................................................................................3–31
3.5.2.4 Operation Mode.............................................................................................................................3–32
3.6 Faults .........................................................................................................................................................3–32
3.7 Revision Status..........................................................................................................................................3–32
3.8 Initial Defaults ..........................................................................................................................................3–33
CHAPTER 4. THEORY OF OPERATION.......................................................................................... 4–1
4.1
Interfaces.....................................................................................................................................................4–1
4.1.1 Configuration ...........................................................................................................................................4–1
4.1.2 Terrestrial Data ........................................................................................................................................4–3
4.1.3 IF Uplink/Downlink.................................................................................................................................4–3
4.1.4 Monitors...................................................................................................................................................4–4
4.1.5 Modem Interfaces.....................................................................................................................................4–5
4.2 Switching Modes.........................................................................................................................................4–6
4.2.1 Manual Mode...........................................................................................................................................4–6
4.2.2 Auto Mode ...............................................................................................................................................4–6
CHAPTER 5. MAINTENANCE...........................................................................................................5–1
5.1
Periodic Maintenance.................................................................................................................................5–1
5.2 Software Revisions......................................................................................................................................5–1
5.3 Fault Action.................................................................................................................................................5–2
5.3.1 Modem.....................................................................................................................................................5–2
5.3.2 Switch ......................................................................................................................................................5–3
APPENDIX A. REMOTE CONTROL OPERATION............................................................................. A–1
A.1
General .......................................................................................................................................................A–1
A.2 Message Structure .....................................................................................................................................A–3
A.2.1 Start Characters...................................................................................................................................A–4
Rev. 3 v
Preface SMS-7000 Modem Protection Switch
A.2.2 Command/Response ...........................................................................................................................A–4
A.2.3 End Character .....................................................................................................................................A–5
A.3 Configuration Commands/Responses......................................................................................................A–6
A.3.1 Backup Modem...................................................................................................................................A–6
A.3.2 Prime Modem .....................................................................................................................................A–7
A.3.3 Switch ................................................................................................................................................. A–8
A.3.4 Breakout..............................................................................................................................................A–9
A.3.5 System ................................................................................................................................................A–9
A.3.6 Mode.................................................................................................................................................A–10
A.4 Status Commands/Responses .................................................................................................................A–11
A.5 Stored Faults ............................................................................................................................................A–20
A.6 About Switch............................................................................................................................................A–21
APPENDIX B. M-2000 MULTIPLEXER UTILIZATION ...................................................................... B–1
B.1
Installation .................................................................................................................................................B–1
B.2 Operation ...................................................................................................................................................B–3
Figures
Figure 1-1. SMS-7000 ..............................................................................................................................................1–1
Figure 1-2. Block diagram........................................................................................................................................1–7
Figure 1-3. SCU front panel .....................................................................................................................................1–8
Figure 1-4. SCU rear panel.......................................................................................................................................1–8
Figure 1-5. DSU/IFU terrestrial side ........................................................................................................................1–9
Figure 1-6. DSU/IFU modem side..........................................................................................................................1–10
Figure 2-1. Top mount installation...........................................................................................................................2–9
Figure 2-2. Back mount (hinge) installation...........................................................................................................2–11
Figure 2-3. Hinge mount, side view .......................................................................................................................2–12
Figure 2-4. Hinge mount, top view.........................................................................................................................2–12
Figure 2-5. Typical switch installation ...................................................................................................................2–14
Figure 2-6. SCU rear panel.....................................................................................................................................2–22
Figure 2-7. DSU/IFU terrestrial side ......................................................................................................................2–26
Figure 3-1. SMS-7000 front panel view...................................................................................................................3–1
Figure 3-2. Main menu.............................................................................................................................................3–7
Figure 3-3. Configuration backup 1 and 2 menu ......................................................................................................3–8
Figure 3-4. Configuration independent prime 1 through 8 menu ...........................................................................3–10
Figure 3-5. Configuration dependent prime 1 through 8 menu ..............................................................................3–14
Figure 3-6. Configuration load/verify menu...........................................................................................................3–16
Figure 3-7. Configuration operation mode menu ...................................................................................................3–18
Figure 3-8. System status switching menu .............................................................................................................3–20
Figure 3-9. System status configuration menu .......................................................................................................3–22
Figure 3-10. Faults/alarms menu ............................................................................................................................3–24
Figure 3-11. Stored faults/alarms menu..................................................................................................................3–26
Figure 3-12. Utility system menu ...........................................................................................................................3–28
Figure 4-1. IF switch block diagram.........................................................................................................................4–2
Figure B-1. Terrestrial data interconnections ...........................................................................................................b–2
vi Rev. 3
SMS-7000 Modem Protection Switch Preface
Tables
Table 1-1. SMS-7000 modem hardware compatibility.............................................................................................1–3
Table 1-2. Data formats ............................................................................................................................................1–4
Table 1-3. Options ....................................................................................................................................................1–5
Table 1-4. Protection switch.....................................................................................................................................1–6
Table 1-5. SMS-7000 specifications.......................................................................................................................1–12
Table 2-1. 50-pin cable...........................................................................................................................................2–16
Table 2-2. Trouble shooting ...................................................................................................................................2–19
Table 2-3. DSU data connections (J1 through J10) ................................................................................................2–20
Table 2-4. User remote EIA-485/EIA-232 connector (J1) .....................................................................................2–22
Table 2-5. Modem remote EIA-485 connector (J2)................................................................................................2–23
Table 2-6. Switch faults connector (J3)..................................................................................................................2–23
Table 2-7. Prime mod online connector (J6) ..........................................................................................................2–24
Table 2-8. Prime demod online connector (J5).......................................................................................................2–25
Table 2-9. EIA-422 terrestrial data connectors (J6)................................................................................................2–27
Table 2-10. V.35/EIA-232 terrestrial data connectors (J1).....................................................................................2–29
Table 2-11. Engineering service channel data connectors (J4)...............................................................................2–30
Table 2-12. Alarms (J2) connectors........................................................................................................................2–31
Table 2-13. ADPCM audio data (J5) connectors....................................................................................................2–32
Table 2-14. Balanced G.703/drop & insert data connectors (J3)............................................................................2–33
Table 2-15. Unbalanced data connectors................................................................................................................2–34
Table 2-16. IFU uplink/IF downlink data connectors.............................................................................................2–35
Table 3-1. LED indicators ........................................................................................................................................3–3
Table 3-2. Front panel keypad..................................................................................................................................3–4
Table 3-3. Revision status.......................................................................................................................................3–32
Table 3-4. Initial defaults........................................................................................................................................3–33
Table 4-1. DSM interfaces........................................................................................................................................4–3
Table 4-2. SCU chassis connectors...........................................................................................................................4–4
Table 4-3. SCU rear panel connectors......................................................................................................................4–5
Table 5-1. Switch fault analysis................................................................................................................................5–3
Table A-1. SMS-7000 remote control: SMS-658/SMS-758 comparison table ........................................................a–2
Table B-1. SMS-7000/M-2000 50-pin to 37-pin interface cable pinouts .................................................................b–3
Rev. 3 vii
Preface SMS-7000 Modem Protection Switch

Overview of Changes to Previous Edition

This revision supersedes part number MN/SMS7000 Rev. 2 dated October 3, 1997.
A summary of the changes made for Rev. 2 includes:
Chapter 1 Updated Compatibility and Data Formats paragraph and specified that
the SDM-300 modem must be the 50-pin configuration. Added Options paragraph. Revised Figure 1-2 to include cable part numbers. Updated specifications paragraph to the current specification. Relocated mounting information to Chapter 2.
Chapter 2 Added Equipment Inspection paragraphs to reflect mounting kits and
required tooling. Added cable information. Revised mounting instructions by including description and installation information. Added trouble shooting information for installation procedures.
Chapter 3 Updated software menu from version 2.1.7 to 2.1.8.
Added revision emulation and initial default paragraphs.
Appendix A Updated to software version 2.1.8.
General Deleted Mounting appendix.
Reidentified Multiplexer section as Appendix B.

About this Manual

This manual provides installation and operation information for the Comtech EFData SMS-7000 Modem Protection Switch. This is a technical document intended for earth station engineers, technicians, and operators responsible for the operation and maintenance of the SMS-7000.

Related Documents

The following documents are referenced in this manual:
Department of Defense (DOD) MIL-STD-188-114A, “Electrical Characteristics of Digital Interface Circuits”
M-2000 Multiplexer Installation and Operation Manual
viii Rev. 3
SMS-7000 Modem Protection Switch Preface

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
unsafe practices or risks of property damage.
WARNING indicates a potentially hazardous situation that, if not avoided, could result in death or serious injury.
WARN ING
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.
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, RS­485, etc.). All other references in the manual will be shown with the EIA designations (EIA-232, EIA-485, etc.) only.
Military Standards
References to “MIL-STD-188” apply to the 114A series (i.e., MIL-STD-188-114A), which provides electrical and functional characteristics of the unbalanced and balanced voltage digital interface circuits applicable to both long haul and tactical communications. Specifically, these references apply to the MIL-STD-188-114A electrical characteristics for a balanced voltage digital interface circuit, Type 1 generator, for the full range of data rates. For more information, refer to the Department of Defense (DOD) MIL-STD-188-114A, “Electrical Characteristics of Digital Interface Circuits.”
Trademarks
Other product names mentioned in this manual may be trademarks or registered trademarks of their respective companies and are hereby acknowledged.
Rev. 3 ix
Preface SMS-7000 Modem Protection Switch

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 EFData Customer Support Department.

EMC Compliance

EN55022 Compliance

This equipment meets EN55022.
This is a Class A product. In a domestic environment it may cause radio interference in which the user may be required to take adequate measures.

Federal Communications Commission (FCC)

Note: All cables shall be shielded.
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 and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
x Rev. 3
SMS-7000 Modem Protection Switch Preface

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.
!
International Symbols:
Symbol Definition Symbol Definition
ACHTUNG: Zweipolige bzw. Neutralleiter-Sicherung.
Alternating Current.
Protective Earth
Fuse.
Chassis Ground.
Notes:
1. For additional symbols, refer to “Cautions” listed earlier in this preface.
2. Applicable testing is routinely performed as a condition of manufacturing on all units to ensure compliance with requirements of EN60950 for Safety.
Rev. 3 xi
Preface SMS-7000 Modem Protection Switch

Warranty Policy

This Comtech EFData 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 EFData 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 EFData and all related custom, taxes, tariffs, insurance, etc. Comtech EFData is responsible for the freight charges only for return of the equipment from the factory to the customer. Comtech EFData will return the equipment by the same method (i.e., Air, Express, Surface) as the equipment was sent to Comtech EFData.

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 EFData.
No other warranty is expressed or implied. Comtech EFData 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 EFData 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 EFData 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 EFData 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 EFData Customer Support Department.
xii Rev. 3
Chapter 1.
INTRODUCTION
1
This chapter provides an overview, description, and specifications for the SMS-7000 satellite modem protection switch. The SMS-7000 is hereinafter referred to in this manual as “the switch”, and includes the following components (refer to Figure 1-1):
IFU Intermediate Frequency Switch Unit
DSU Data Switch Unit
SCU Switch Control Unit
Figure 1-1. SMS-7000
Rev. 3 1–1
Introduction SMS-7000 Modem Protection Switch
1.1 Overview
The switch is specifically designed to perform automatic redundancy switching for any combination of up to two backup and eight prime Comtech EFData satellite modems. Up to eight separate uplinks and downlinks can be accessed by the user at any time.
Each switch channel has a built-in breakout panel that is automatically configured to support overhead, non-overhead, and programmable data-type modems. Configuration and control of the switch and attached modems may be performed from a terminal or PC connected to the switch remote port (refer to Appendix A); or directly from the switch front panel (refer to Chapter 3).
The switch is compatible with the M-2000 multiplexer (refer to Appendix C for more information).
The switch is tested and certified to CE-Mark requirements.
1.1.1 Compatibility
The switch is designed to operate with the following Comtech EFData modems:
SDM-100 SDM-300A (see Note)
SDM-308-4 SDM-6000
SDM-308-5 SDM-8000
SDM-309B SLM-3650 (see Note)
SDM-650B SLM-6650
SDM-300 (see Note) SLM-8650
Note:
Use the 50-pin D connector configuration with the switch.
1–2 Rev. 3
SMS-7000 Modem Protection Switch Introduction
For modem compatibility, refer to Table 1-1.
Table 1-1. SMS-7000 Modem Hardware Compatibility
Rack Setup Backup Comments
SDM-308-4 SDM-6000
SDM-308-5 SDM-6000 SDM-309B SDM-6000 SDM-308-4 SDM-8000
SDM-308-5 SDM-8000 SDM-309B SDM-8000 SDM-650B SDM-100A SDM-100A SDM-300/-300A SDM-308-4 SDM-300/-300A
SDM-308-5 SDM-300/-300A SDM-309 SDM-300/-300A SDM-650B SDM-300/-300A SDM-6000 SDM-300/-300A SLM-3650 None Only compatible with SLM-3650, incorporating the 50-pin Data
SLM-6650 None Only compatible with SLM-6650. SLM-8650 None Only compatible with SLM-8650.
Either SDM-6000 must be configured as Modem Type 1 to be compatible
with SDM-308-4 (M1200P).
Note:
SDM-6000 must be configured as Modem Type 4 to be
compatible with SDM-308-4 (old IDR interface). (See Note 1)
Either SDM-6000 must be configured as Modem Type 3 to be compatible
with SDM-308-5. (See Note 1)
Either SDM-6000 must be configured as Modem Type 2 to be compatible
with SDM-309 (M1200P). (See Note 1)
Either SDM-8000 must be configured as Modem Type 1 to be compatible
with SDM-308-4.(M1200P).
Note:
SDM-8000 must be configured as Modem Type 4 to be compatible with SDM-308-4 (old IDR interface) or Type 5 to be compatible with SDM-308-4 (M1200/RS). (See Note 1)
Either SDM-8000 must be configured as Modem Type 3 to be compatible
with SDM-308-5. (See Note 1)
Either SDM-8000 must be configured as Modem Type 2 to be compatible
with SDM-309 (M1200P). (See Note 1)
Either SDM-100A must have sequential decoder option, and be configured
as Modem Type 1 to be compatible with SDM-650B. (See Note 1)
Either SDM-300/300A, incorporating the 50-pin Data Interface connector
must be configured to emulate an SDM-100A (Ver: 15.7.1).
Either SDM-300/300A, incorporating the 50-pin Data Interface connector
must be configured to emulate an SDM-308-4 (Ver: 4.03, 6.05, or
7.03).
Either SDM-300/300A, incorporating the 50-pin Data Interface connector
must be configured to emulate an SDM-308-5 (Ver: 6.08).
Either SDM-300/300A, incorporating the 50-pin Data Interface connector
must be configured to emulate an SDM-309 (Ver: 6.04).
Either SDM-300/300A, incorporating the 50-pin Data Interface connector
must be configured to emulate an SDM-650B (Ver; 4.12A or 4.16)
Either SDM-300/300A, incorporating the 50-pin Data Interface connector
must be configured to emulate an SDM-6000 (Ver: 5.1.1)
Interface connector.
Notes
:
1. Modem control feature supported by latest code release for SDM-100, SDM-6000, and SDM-8000.
2. Backup modems are always compatible with primes of like models when they are comparably equipped.
3. Consult Comtech EFData Customer Support for combinations not shown in Table 1-1.
4. Compatibility differences between modems exist due to the fact that the specific capabilities of modems vary. For example, the SDM-8000 has a larger set of framing structure parameters than the SDM-300, etc.
Rev. 3 1–3
Introduction SMS-7000 Modem Protection Switch
1.1.2 Data Formats
Table 1-2 lists the data formats that the switch will support.
Table 1-2. Data Formats
Data Type Connector
V.35 Data 25-pin D EIA-422/MIL-STD-188 Data IDR 8K Data Channel 37-pin D G.703 Balanced 15-pin D G.703 Unbalanced Coax BNC EIA-232 Data 25-pin D ADPCM Audio Data or 64K Data Overhead 9-pin D Engineering Data Channel ASYNC Overhead 25-pin D Alarms 25-pin D
Under the following conditions, the switch is designed to operate with prime modems configured with different overhead data types, such as, IDR, IBS, D&I, ASYNC, or NONE; and/or with different terrestrial data types, such as, EIA-422, V.35, or G.703:
Modems must be one of the following models:
!
SDM-6000
!
SDM-8000
!
SLM-6650
!
SLM-8650
Backup modems must have an AS/2876 interface relay board option installed, in order for the backup modem to switch between IDR, IBS, and Custom mode.
Backup modems’ switching mode must be dependent when there is a mixture of prime modem types. Example: Prime 1 is IDR, and Prime 2 is IBS, EIA-422.
Backup modems must be comparably equipped to the prime modems assigned. (Example: Backup #1 is an SDM-8000 configured with a relay card and a sequential decoder. It can backup prime modems (SDM-8000) that are configured as prime #1 IDR and prime #2 configured for Custom sequential. Backup # 2 can also be an SDM-300 backing up a set of prime SDM-300 modems. The backup modems can be directed to a specific set of modems.)
1–4 Rev. 3
SMS-7000 Modem Protection Switch Introduction
1.1.3 Options
Table 1-3 lists the options that are applicable to the switch.
Table 1-3. Options
Input Power Mounting Kit IF Switch Switch Type Switch Quantity Option
AC Top KT/5275 No IF Switch Universal 1 None DC Back KT/5274
75Ω Attached 50Ω Attached 75Ω Unattached 50Ω Unattached
2 3 4 5 6 7 8
Rev. 3 1–5
Introduction SMS-7000 Modem Protection Switch
1.1.4 Protection Switch
Refer to Table 1-4 for part numbers of various switch component.
Table 1-4. Protection Switch

Part Number Description

PL/4800 Chassis Controller PL/4801-1 PL/4801-2 PL/4802 Switch, Data PL/4803 Power Supply, AC PL/4831 Power Supply, DC CA/5343 Cable Assembly, 15-Pin, EMI CA/5361-1 Cable Assembly, Switch to Controller, 6 ft. (182.88 cm)
1.2 Description
The switch (Figure 1-1) is composed of three units:
Switch Control Unit (SCU)
and configuration.
Data Switch Unit (DSU)
data configuration and backup modem data switching.
IF Switch (IFU)
switching.
IF Switch, 75 IF Switch, 50
— User interface for switch and modem control
— As commanded by the SCU, performs terrestrial
— As commanded by the SCU, performs backup modem IF
This 3-chassis arrangement gives the user control of the switch from the one unit (1U) rack mounted SCU front panel. The DSU and IFU, which contain all terrestrial and link interfaces, are mounted inside the rack to minimize rack and external interface cabling. These units will accommodate the particulars of external interface requirements. They can be separated or joined together and mounted either in the rear or on the top of the rack.
1–6 Rev. 3
SMS-7000 Modem Protection Switch Introduction
The switch functional block diagram (Figure 1-2) displays the functional partitioning and interconnection between the three chassis.
Two cables interconnect the three units. The SCU and DSU are connected via a cable that transfers power, faults, and switch control between the two chassis. Power, modem faults, and switch faults originate from the DSU, while switch control commands are initiated by the SCU. The IFU is connected to the DSU in the same manner.
CONTROL UNIT
REMOTE CONTROL
EIA-485/232
UP/DOWN LINK
16 COAX
IF SWITC H U NIT
COAX
SWITCH
SLAVE
CONTROLLER
FRONT PANEL
CONTROLLER
CA/5361
FAULT AND
STATUS RELAYS
DB9 SWITCH FAULTS
x2 DB2 5 ONLINE STATUS
DB9 EIA-485 MODEM REMOTE
16 COAX PRIMARY MODEM IF RX/TX
4 COAX BACKUP MODEM IF RX/TX
TERRESTRIAL
DATA, x8
PRIME POWER IN
PRIME POWER IN
BALANCED DATA
DB25
EIA-422
DB15
G.703 V.3 5
DB25
EIA-232-C
DB25
UNBALANCED DATA 5 COAX
D&I G.703 EXTERNAL CLOCK
AUXILIARY DATA
ADPCM
DB9
ESC
DB25
ALARMS
DB25
CA/0755
LOW VOLTAGE
POWER
LOW VO LTAGE
POWER
BOP
x8
DATA SWITCH UNIT
Figure 1-2. Block Diagram
IBS/IDR
EIA-485
FAULTS
SLAVE
CONTROLLER
DATA SWITCH
M:N x8
x8 DB5 0 PRIMARY MODEM DATA RX/TX
x2 DB5 0 BACKUP MODEM DATA RX/TX
Rev. 3 1–7
Introduction SMS-7000 Modem Protection Switch

1.2.1 Switch Controller Unit (SCU)

The SCU is a one unit (1U), 19-inch (48.26 cm) rack-mounted chassis that provides the configuration and automatic switching control functions. Rear panel connectors on this chassis provide all user remote control and status interfaces and rack internal control interfaces. The front panel provides local control of the switch.
The SCU front panel (Figure 1-3) provides the user with visual fault and status indicators. The back-lit display and keypad provide the local user control interface. The front panel is a typical Comtech EFData modem front panel status and control interface. The switch front panel supports all functions of the remote port. The user may configure both the switch and associated modems as well as query status and faults.
Note:
The modem control feature is only available with certain modems. Refer to the
compatibility chart (Table 1-3) for specific applications.
Figure 1-3. SCU Front Panel
The SCU rear panel (Figure 1-4) accommodates the user serial command interface for remote configuration and status. These interfaces are also shown in the block diagram (Figure 1-2).
PRIME MOD
J6 J6
STATUS
PRIME MOD
STATUS
DATA SWITCH
INTER FACE
J4
J3
SWITCH FAULTS
MODEM
J2 J1
REMOTE
USER
REMOTE
Figure 1-4. SCU Rear Panel
Prime modulator and demodulator status and switch faults are provided on dedicated I/O connectors. Status and fault conditions are indicated at these connectors by opening and closing relay contacts, which may be used to directly trigger external alarms and indicators. The modem remote port is the control interface to all modems attached to the switch. The Data Switch Interface, which carries control and fault information between the switch chassis and SCU, is also provided.
1–8 Rev. 3
SMS-7000 Modem Protection Switch Introduction

1.2.2 Data Switch Unit (DSU)

The DSU performs terrestrial data switch and breakout panel functions. Enclosed in a shallow 4.5-inch (11.4 cm) deep chassis, the DSU is designed to mount within the rack in several ways. This will accommodate particular rack configurations and user terrestrial cable routing.
The DSU (Figure 1-5) may be equipped with up to eight data switch modules—one per prime modem as required. The modules may be removed and replaced on site, or they can be added later for configuration expansion. In addition to performing prime and backup data switch functions, each module incorporates a configurable breakout panel that steers the desired terrestrial data interfaces to a single modem I/O data connector.
VR .S 32 53
2
VR .S 32 53
2
VR .S 32 53
2
VR .S 32 53
2
VR .S 32 53
2
VR .S 32 53
Figure 1-5. DSU/IFU Terrestrial Side
VR .S 32 53
2
2
VR .S 32 53
2
Rev. 3 1–9
Introduction SMS-7000 Modem Protection Switch
The bottom of the DSU encloses two redundant, online-replaceable, low-voltage, power supply modules. The power supply modules service all three chassis and are individually replaceable with no interruption of service.
All terrestrial data connections are located on the data switch module face of the DSU (Figure 1-5). The breakout panel on the face of each data switch module supports a variety of standard data and alarm interfaces. These interfaces support IBS, IDR, D&I, or custom formats.
Ten modem data cable interfaces are located on the opposite face of the DSU (Figure 1-6); one for each of the eight prime and two backup satellite modems. Connectors J11 and J12 provide the interfaces for the SCU and IFU. The line cord receptacles for the redundant power supply modules are located at the upper corners of the unit The spring­loaded mechanical slide, associated with each supply, must be slid aside to insert the AC line cord. Unless the power cord is disconnected, this slide performs two functions retaining the power cord and preventing the removal of the module.
Figure 1-6. DSU/IFU Modem Side
1–10 Rev. 3
Loading...
+ 118 hidden pages