Microwave Radio Communications SCM4000 Technical Reference Manual

SCM4000

Single Carrier Modem

Manual Part No. 400509-1

Rev. A February 2006

Technical Reference
Manual

Notices

About This Manual

Part number 400509-1

Revision A - February 2006

The information in the manual applies to the Microwave Radio
Communications (MRC) SCM4000 Single Carrier Modem.

Copyright

Proprietary Material

The information and design contained within this manual was
originated by and is the property of Microwave Radio
Communications. Microwave Radio Communications reserves
all patent proprietary design, manufacturing, reproduction use,
and sales rights thereto, and to any articles disclosed therein,
except to the extent rights are expressly granted to others. The
foregoing does not apply to vendor proprietary parts.

To allow for the introduction of design improvements,

specifications are subject to change without notice.

The information in this book may be reproduced by the

purchaser to the extent needed for their organization. No part of
this material may be modified in any way, or published for resale,
without the express written authorization of Microwave Radio
Communications.

© 2006 Microwave Radio Communications

Microwave Radio Communications

101 Billerica Avenue - Bldg. 6

North Billerica, MA 01862-1256 USA

TEL: [phone]

FAX: [phone]

Printed in U.S.A.

Quality Certification

Microwave Radio Communications is certified to ISO 9001:2000.

Authorized EU representative: Vislink PLC.

Notices iSCM4000 Technical Reference Manual

Conventions

Symbols Used

Pay special attention to information marked in one of the
following ways:

WARNING

CAUTION

Note

Notes provide additional information to assist you
in using and maintaining the equipment.

Follow WARNINGS closely to prevent
personal injury or death.

Follow CAUTIONS to prevent damage to
the equipment.

On-Line Viewing

Text displayed as blue contains a hypertext link. Click on the

hypertext to jump to that destination. Click on the

blue destination to return.

The following symbols are used on the equipment:

Symbol Meaning

WARNING: General Warning. Risk of Danger

WARNING: Risk of Electric Shock

CAUTION: Electrostatic Discharge. Possible
Damage to Equipment

Fuse - Identifies fuses or their location.

OR

Frame or Chassis Ground - Identifies the frame or
chassis terminal.

Viewing this manual on-line
requires Adobe Acrobat,
version 4.0 or above.

Click on this icon to download your
FREE copy of Adobe Acrobat
Reader.

Earth Ground - Identifies the earth Ground Terminal

Protective Earth Ground - Identifies any terminal
which is intended for connection to an external
conductor for protection against electric shock in
case of a fault, or the terminal on a protective earth
electrode.

Notices iiSCM4000 Technical Reference Manual

Warranty Information

Products Manufactured by MRC:

a. Products manufactured by MRC are warranted against
defects in material and workmanship for a period of two (2) years
from date of delivery, as evidenced by MRC's packing slip or
other transportation receipt (unless otherwise noted).

b. MRC's sole responsibility under this warranty will be to either
repair or replace, at its option, any component which fails during
the applicable warranty period because of a defect in material or
workmanship, provided Buyer has promptly reported same to
MRC in writing. All replaced products and parts will become
MRC's property.

c. MRC will honor the warranty at the repair facility designated
by MRC. It is Buyer's responsibility to return, at its expense, the
allegedly defective product to MRC. Buyer must obtain a Return
Material Authorization (RMA) number and shipping instructions
from MRC prior to returning any product under warranty.
Transportation charges for the return of the product to Buyer will
be paid by MRC within the United States. For all other locations,
the warranty excludes all costs of shipping, customs clearance,
and other related charges. If MRC determines that the product is
not defective within the terms of this warranty, Buyer will pay
MRC all costs of handling, transportation, and repairs at the then
prevailing repair rates.

d. All the above warranties are contingent upon proper use of
the product. These warranties will not apply (1) if adjustment,
repair, or product or parts replacement is required because of
accident, unusual physical, electrical or electromagnetic stress,
neglect, misuse, failure of electric power, environmental controls,
transportation, failure to maintain properly or otherwise in
accordance with MRC specifications, or abuses other than

ordinary use; (2) if the product has been modified by Buyer or
has been repaired or altered outside MRC's repair facility, unless
MRC specifically authorizes such repairs or alterations in each
instance; or (3) where MRC serial numbers, warranty data, or
quality assurance decals have been removed or altered.

e. No person, including any dealer, agent or representative of
MRC is authorized to assume for MRC any other liability on its
behalf except as set forth herein. If any payment is due MRC for
services performed hereunder, it will be subject to the same
payment terms as the original purchase.

Products Manufactured By Others:

For products not manufactured by MRC, the original
manufacturer's or licensor's warranty will be assigned to Buyer to
the extent permitted by the manufacturer or licensor and is in lieu
of any other warranty, expressed or implied. For warranty
information on a specific product, a written request should be
made to MRC.

All Products:

THE FOREGOING WARRANTIES AND REMEDIES ARE
EXCLUSIVE AND ARE IN LIEU OF ALL OTHER EXPRESS OR
IMPLIED WARRANTIES, OBLIGATIONS, AND LIABILITIES ON
THE PART OF MRC. EXCEPT FOR THE EXPRESS
WARRANTIES STATED HEREIN, MRC DISCLAIMS ALL
WARRANTIES ON PRODUCTS FURNISHED HEREUNDER,
INCLUDING, WITHOUT LIMITATION, ALL IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. MRC WILL HAVE NO
RESPONSIBILITY FOR ANY PARTICULAR APPLICATION
MADE OF ANY EQUIPMENT.

Any description of equipment, whether in writing or made orally
by MRC or its agents, specification sheets, models, bulletins,

Notices iiiSCM4000 Technical Reference Manual

drawings, or similar materials used in connection with Buyer's
order are for the sole purpose of identifying the equipment and
will not be construed as an express warranty. Any suggestions
by MRC or its agents regarding use, application, or suitability of
the equipment will not be construed as an express warranty. No
warranties may be implied from any course of dealing or usage
of trade. Buyer agrees that the exclusion of all warranties, other
than those expressly provided herein, is reasonable.

Notices ivSCM4000 Technical Reference Manual

Contents

Notices - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - i

About This Manual - - - - - - - - - - - - - - - - - - - - - - - - i
Copyright - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - i
Proprietary Material - - - - - - - - - - - - - - - - - - - - - - - i
Quality Certification - - - - - - - - - - - - - - - - - - - - - - - i

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - i

Conventions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ii

On-Line Viewing - - - - - - - - - - - - - - - - - - - - - - - - - - ii
Symbols Used- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ii
Warranty Information - - - - - - - - - - - - - - - - - - - - - - - - - iii

Products Manufactured by MRC: - - - - - - - - - - - - - - iii

Products Manufactured By Others:- - - - - - - - - - - - - iii

All Products: - - - - - - - - - - - - - - - - - - - - - - - - - - - - iii

Introduction - - - - - - - - - - - - - - - - - - - - - - - - - 1-1

Chapter Overview - - - - - - - - - - - - - - - - - - - - - - - - - 1-1
How to Use This Manual - - - - - - - - - - - - - - - - - - - - 1-1
What This Manual Covers - - - - - - - - - - - - - - - - - - - 1-1
How They’re Organized - - - - - - - - - - - - - - - - - - - - - 1-1
For Whom It’s Written - - - - - - - - - - - - - - - - - - - - - - 1-2
Related Documents - - - - - - - - - - - - - - - - - - - - - - - - 1-2
Ordering Documentation - - - - - - - - - - - - - - - - - - - - 1-2
Calling for Service - - - - - - - - - - - - - - - - - - - - - - - - - 1-3
Supported Repairs - - - - - - - - - - - - - - - - - - - - - - - - 1-3
Tell Us What You Think! - - - - - - - - - - - - - - - - - - - - 1-3

Product Description- - - - - - - - - - - - - - - - - - - 2-1

Chapter Overview - - - - - - - - - - - - - - - - - - - - - - - - - 2-1
System Description - - - - - - - - - - - - - - - - - - - - - - - - 2-1

Configuration Options - - - - - - - - - - - - - - - - - - - - 2-2

Configuration Descriptions - - - - - - - - - - - - - - - - 2-2

Power Options - - - - - - - - - - - - - - - - - - - - - - - - - 2-5

Mounting and Deployment Options - - - - - - - - - - 2-5

System Integration - - - - - - - - - - - - - - - - - - - - - - 2-5

SCM4000 Configurations - - - - - - - - - - - - - - - - - - - - 2-5

SCM4000 Modulator - - - - - - - - - - - - - - - - - - - - - 2-6
SCM4000 Demodulator - - - - - - - - - - - - - - - - - - - 2-6
SCM4000 Modulator/Demodulator - - - - - - - - - - - 2-7
SCM4000 Modulator/Encoder- - - - - - - - - - - - - - - 2-7
SCM4000 Demodulator/Decoder - - - - - - - - - - - - 2-8

For More Information - - - - - - - - - - - - - - - - - - - - - - - 2-8

Routine Operation - - - - - - - - - - - - - - - - - - - - 3-1

Chapter Overview - - - - - - - - - - - - - - - - - - - - - - - - - 3-1
Overview of Controls, Indicators and Connectors - - - 3-1

SCM4000 Controls and Indicators- - - - - - - - - - - - 3-1
SCM4000 Modulator Connectors - - - - - - - - - - - - 3-3
SCM4000 Demodulator Connectors - - - - - - - - - - 3-4
SCM4000 Modulator/Demodulator Connectors - - 3-6
SCM4000 Modulator/Encoder Connectors - - - - - - 3-7
SCM4000 Demodulator/Decoder Connectors- - - - 3-9

Preparing for Operation - - - - - - - - - - - - - - - - - - - - 3-10

Fixed or Mobile Installation- - - - - - - - - - - - - - - - 3-11
Powering the SCM4000 - - - - - - - - - - - - - - - - - - 3-11

Using the SCM4000 Screens - - - - - - - - - - - - - - - - 3-11

Overview - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-12
Menu Configurations - - - - - - - - - - - - - - - - - - - - 3-16
Main Screen - - - - - - - - - - - - - - - - - - - - - - - - - - 3-17
Cursors - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-17
Preset Selection - - - - - - - - - - - - - - - - - - - - - - - 3-18

Accessing the Menus- - - - - - - - - - - - - - - - - - - - 3-19
SCM4000 Monitor/Change Operations - - - - - - - - - - 3-19
SCM4000 Modulator Menu Operations- - - - - - - - - - 3-20

Monitor/Change Symbol Rate - - - - - - - - - - - - - - 3-21

Monitor/Change Modulation Type - - - - - - - - - - - 3-23

Contents-1SCM4000 Technical Reference Manual

Monitor/Change ASI Enable - - - - - - - - - - - - - 3-25
Monitor/Change ASI Bit Rate - - - - - - - - - - - - - - 3-27
Monitor/Change DS3/E3 Enable - - - - - - - - - - - 3-29
Monitor/Change DS3/E3 Line Standard Setting - 3-31
Monitor/Change DS3/E3 Line Equalizer Setting- 3-33
Monitor DS3/E3 Bit Rate - - - - - - - - - - - - - - - - - 3-36
Monitor/Change Ethernet Enable - - - - - - - - - - - 3-37
Monitor/Change Ethernet Bit Rate - - - - - - - - - - 3-40
Monitor/Change Ethernet LIU Bit Rate - - - - - - - 3-42
Monitor/Change RS232/RS485 Serial Enable - - 3-44
Monitor/Change RS232/RS485 Baud Rate - - - - 3-46
Monitor RS232/RS485 Bit Rate - - - - - - - - - - - - 3-49
Monitor/Change SMPTE Enable - - - - - - - - - - - 3-50
Monitor/Change SMPTE Mode - - - - - - - - - - - - 3-52
Monitor SMPTE Bit Rate - - - - - - - - - - - - - - - - - 3-54
Monitor/Change T1/E1 Enable- - - - - - - - - - - - - 3-56
Monitor/Change T1/E1 Line Standard- - - - - - - - 3-58
Monitor/Change T1/E1 Termination - - - - - - - - - 3-60
Monitor/Change T1/E1 Line Coding State - - - - - 3-62
Monitor/Change T1/E1 Receiver Gain - - - - - - - 3-65
Monitor T1/E1 Bit Rate - - - - - - - - - - - - - - - - - - 3-67
Monitor/Change IF Level - - - - - - - - - - - - - - - - - 3-68
Monitor/Change Spectrum Inverter State - - - - - 3-70
Monitor/Change CW Tone State - - - - - - - - - - - 3-72
Monitor/Change PRBS State - - - - - - - - - - - - - - 3-74

SCM4000 Demodulator Menu Operations - - - - - - - 3-76

Monitor/Change Symbol Rate Settings - - - - - - - 3-77
Monitor/Change Modulation Type Settings - - - - 3-79
Monitor Signal-to-Noise Ratio - - - - - - - - - - - - - 3-80
Monitor EVM - - - - - - - - - - - - - - - - - - - - - - - - - 3-82
Monitor/Change ASI Bit Rate Settings - - - - - - - 3-83
Monitor/Change DS3/E3 Line Standard Setting - 3-86
Monitor/Change DS3/E3 Line Equalizer Setting- 3-88
Monitor DS3/E3 Bit Rate - - - - - - - - - - - - - - - - - 3-90

Monitor/Change Ethernet Bit Rate- - - - - - - - - - - 3-92

Monitor/Change Ethernet LIU Rate - - - - - - - - - - 3-94

Monitor/Change RS232/RS485 Baud Rate - - - - 3-97

Monitor RS232/RS485 Bit Rate - - - - - - - - - - - - 3-99

Monitor SMPTE Bit Rate - - - - - - - - - - - - - - - - 3-100

Monitor/Change T1/E1 Line Standard - - - - - - - 3-102

Monitor/Change T1/E1 Line Coding - - - - - - - - 3-104

Monitor/Change T1/E1 Line Build Out - - - - - - - 3-106

Monitor T1/E1 Bit Rate- - - - - - - - - - - - - - - - - - 3-108

Monitor/Change Line Equalizer- - - - - - - - - - - - 3-110

Monitor/Change PRBS State - - - - - - - - - - - - - 3-112

Monitor PRBS Bit Error Rate - - - - - - - - - - - - - 3-114

Reset PRBS - - - - - - - - - - - - - - - - - - - - - - - - - 3-116
SCM4000 Modulator/Demodulator Menu Operations 3-117
SCM4000 Modulator/Encoder Menu Operations - - 3-118

MPEG Encoder Menu Options - - - - - - - - - - - - 3-118

Monitor/Change Color Bars Settings - - - - - - - - 3-118

Monitor/Change Chroma Settings - - - - - - - - - - 3-120

Monitor/Change BISS Settings - - - - - - - - - - - - 3-122

Monitor/Change Delay Setting - - - - - - - - - - - - 3-123

Monitor/Change Bit Rate Settings - - - - - - - - - - 3-125

Monitor/Change Video Setting - - - - - - - - - - - - 3-127

Monitor/Change Audio A Settings - - - - - - - - - - 3-128

Monitor/Change Audio B Settings - - - - - - - - - - 3-131

Monitor Network Name - - - - - - - - - - - - - - - - - 3-133

Monitor Service Name - - - - - - - - - - - - - - - - - - 3-134
SCM4000 MPEG Demodulator/Decoder Menu Operations 3-

135

MPEG Decoder Menu Options - - - - - - - - - - - - 3-136

Monitor/Change Color Bars Settings - - - - - - - - 3-136

Monitor/Change Audio Output Settings - - - - - - 3-138

Monitor/Change Generator Lock Settings - - - - 3-139

Monitor/Change NTSC Pedestal Settings - - - - 3-141

Monitor/Change BISS Settings - - - - - - - - - - - - 3-143

Contents-2SCM4000 Technical Reference Manual

Monitor Audio A Status - - - - - - - - - - - - - - - - - 3-145
Monitor Audio B Status - - - - - - - - - - - - - - - - - 3-146
Monitor Video Status - - - - - - - - - - - - - - - - - - 3-148
Monitor Packet Errors - - - - - - - - - - - - - - - - - - 3-149
Monitor Service Name - - - - - - - - - - - - - - - - - 3-151

SCM4000 System Menu Operations - - - - - - - - - - 3-152

Monitor/Change Active Preset - - - - - - - - - - - - 3-153
Save Preset Settings - - - - - - - - - - - - - - - - - - 3-154
Recall Preset Settings- - - - - - - - - - - - - - - - - - 3-155
Monitor Active Errors - - - - - - - - - - - - - - - - - - 3-156
Monitor/Clear Error Log- - - - - - - - - - - - - - - - - 3-157
Monitor System Information - - - - - - - - - - - - - - 3-158
Perform System Reset - - - - - - - - - - - - - - - - - 3-160

Troubleshooting - - - - - - - - - - - - - - - - - - - - - 4-1

Chapter Overview - - - - - - - - - - - - - - - - - - - - - - - - - 4-1
Status LEDs - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-1
Error Codes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-2
Operational Problems - - - - - - - - - - - - - - - - - - - - - 4-11
Link Setup Guide- - - - - - - - - - - - - - - - - - - - - - - - - 4-15

Installation- - - - - - - - - - - - - - - - - - - - - - - - - - 5-1

Chapter Overview - - - - - - - - - - - - - - - - - - - - - - - - - 5-1
Unpacking - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-1
Initial Inspection - - - - - - - - - - - - - - - - - - - - - - - - - - 5-1
Damage in Shipment - - - - - - - - - - - - - - - - - - - - - - - 5-1
Installing the SCM4000 - - - - - - - - - - - - - - - - - - - - - 5-2

Equipment Rack - - - - - - - - - - - - - - - - - - - - - - - - 5-2
Mounting the SCM4000 - - - - - - - - - - - - - - - - - - 5-2
Ventilation - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-3
Moisture - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-3
Cabling - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-3

Power Connections - - - - - - - - - - - - - - - - - - - - - - - - 5-4

Power Requirements - - - - - - - - - - - - - - - - - - - - 5-4
Power Supply and Distribution - - - - - - - - - - - - - - 5-4
Panel Power Connections - - - - - - - - - - - - - - - - - 5-5

Additional Powering Notes - - - - - - - - - - - - - - - - - 5-5
Grounding - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-5
Audio Connections - - - - - - - - - - - - - - - - - - - - - - - - - 5-6

Panel Connections - - - - - - - - - - - - - - - - - - - - - - 5-6

Audio Inputs and Outputs- - - - - - - - - - - - - - - - - - 5-8

Audio Configurations - - - - - - - - - - - - - - - - - - - - - 5-8
Signal Connections - - - - - - - - - - - - - - - - - - - - - - - - 5-8

Front Panel RS-232 Connector - - - - - - - - - - - - - 5-18

SCM4000 Rear Panel Connectors - - - - - - - - - - 5-18
Cable Assemblies - - - - - - - - - - - - - - - - - - - - - - - - 5-22
Powering Up - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-26

Checks before power-up - - - - - - - - - - - - - - - - - 5-26

Initial power-up - - - - - - - - - - - - - - - - - - - - - - - - 5-26
Product Modifications - - - - - - - - - - - - - - - - - - - - - - 5-26

Repair - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-1

Chapter Overview - - - - - - - - - - - - - - - - - - - - - - - - - 6-1
Supported Repairs - - - - - - - - - - - - - - - - - - - - - - - - - 6-1
Calling for Service - - - - - - - - - - - - - - - - - - - - - - - - - 6-1

Replacement Parts - - - - - - - - - - - - - - - - - - - 7-1

Chapter Overview - - - - - - - - - - - - - - - - - - - - - - - - - 7-1
External Cables - - - - - - - - - - - - - - - - - - - - - - - - - - - 7-1
Power Fuses - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7-1

Theory of Operation - - - - - - - - - - - - - - - - - - 8-1

Chapter Overview - - - - - - - - - - - - - - - - - - - - - - - - - 8-1
System Architecture - - - - - - - - - - - - - - - - - - - - - - - - 8-1
Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8-2

Description - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8-2

Interfaces - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8-2

Data Mux - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8-2

SCM4000 Modulator/Demodulator Modem Configuration

8-3

SCM4000 Modulator Description - - - - - - - - - - - - 8-3

SCM4000 Demodulator Description - - - - - - - - - - 8-4

SCM4000 Modulator/Encoder- - - - - - - - - - - - - - - 8-4

Contents-3SCM4000 Technical Reference Manual

SCM4000 Demodulator/Decoder - - - - - - - - - - - - 8-5

Glossary - - - - - - - - - - - - - - - - - - - - - - - - - - - A-1
Preset Settings Worksheets- - - - - - - - - - - - - B-1

Appendix Overview - - - - - - - - - - - - - - - - - - - - - - - - B-1

Symbol Rate Calculations - - - - - - - - - - - - - - C-1

Appendix Overview - - - - - - - - - - - - - - - - - - - - - - - - C-1
Bit Rates and Symbol Rates - - - - - - - - - - - - - - - - - - C-1

This page intentionally left blank.

Contents-4SCM4000 Technical Reference Manual

1

Introduction

Your SCM4000 will consist of one of the following configurations:

• SCM4000 Modulator

1.1 Chapter Overview

This chapter will introduce you to the Technical Reference
Manual: what it covers, how it’s organized, and for whom it’s
written.

1.2 How to Use This Manual

This manual was prepared to be viewed on a Windows-based
PC. A pdf file for this manual is provided on the CD ROM
delivered with each SCM4000. The CD ROM contains pdf files
for the Operator’s Guide, the Technical Reference Manual, and
the Quick Reference Cards. Hardcopies of the Operator’s
Guide, the Technical Reference Manual, and the Quick
Reference Cards are also delivered with each SCM4000.

Viewing of this manual on-line requires Adobe Acrobat, Version

4.0 or above. Click on the following icon to download your FREE
copy of Adobe Acrobat Reader.

• SCM4000 Demodulator

• SCM4000 Modulator/Demodulator

• SCM4000 Modulator/Encoder

• SCM4000 Demodulator/Decoder.

This manual provides coverage for each of these various
configurations.

Your SCM4000 can be rack-mounted in a standard 19-inch (48.3
cm) rack for fixed site or mobile operations and can be ordered
to operate on either AC or DC power.

1.4 How They’re Organized

The manuals for the SCM4000 are organized as follows:

Chapter

Introduction ✔ ✔

Operator’s

Guide

Technical

Reference

Manual

When viewing this manual on-line, text displayed as blue contains a
hypertext link. Click on the blue hypertext link to jump to that
destination. If the destination link is also blue, click on the blue

destination link to return.

1.3 What This Manual Covers

This manual describes how to operate and maintain the
SCM4000 Single Carrier Modem.

Product Description ✔ ✔

Routine Operation ✔ ✔

Troubleshooting ✔ ✔

Installation ✔

Introduction 1-1SCM4000 Operator’s Guide

Repair ✔

• SCM4000 Single Carrier Modem MPEG Encoder Option

Quick Reference Card (part no. 400510-3)

Replacement Parts ✔

Theory of Operation ✔

Appendix A - Glossary ✔ ✔

Appendix B - Preset
Settings Worksheet

Appendix C - SCM4000
Symbol Rate
Calculations

Note

The Technical Reference Manual contains
everything in the Operator’s Guide, plus additional
technical content.

✔

✔

1.5 For Whom It’s Written

This manual is intended for use by qualified installers and
service personnel. Users of this manual should already be
familiar with basic concepts of radio, video, and audio.

• SCM4000 Single Carrier Modem MPEG Decoder Option

Quick Reference Card (part no. 400510-4)

1.7 Ordering Documentation

Any of the above manuals may be ordered by contacting MRC
Customer Service:

Business Hours: Monday - Thursday

8:00 AM - 7:00 PM Eastern Time (US)

(0800 - 1900 hrs US ET)

Friday

8:00 AM - 5:00 PM Eastern Time (US)

(0800 - 1700 hrs US ET)

Telephone: [phone]

978-671-5700

Fax: [phone]

When contacting Customer Service, please have the following
information available:

1.6 Related Documents

• SCM4000 Single Carrier Modem Operator’s Guide

(part no. 400508-1)

• SCM4000 Single Carrier Modem Modulator Option Quick
Reference Card (part no. 400510-1)

• SCM4000 Single Carrier Modem Demodulator Option
Quick Reference Card (part no. 400510-2)

• Model number and serial number of the unit. This is
located on a label on the bottom of each unit.

• Approximate purchase date.

• Firmware revisions, which appear on the SCM4000
alphanumeric display System Menus > System Info
menu screen.

Introduction 1-2SCM4000 Operator’s Guide

1.8 Calling for Service

1.9 Supported Repairs

MRC Technical Support is available 24 hours a day, 7 days a
week. During regular business hours you can reach our expert
staff directly. After hours, your call will be forwarded to the on-call
Technical Support specialist.

Business Hours: Monday

8:00 AM - 5:00PM Eastern Time (US)

(0800 - 1700 hrs US ET)

Tuesday - Friday

8:00 AM - 7:00PM Eastern Time (US)

(0800 - 1900 hrs US ET)

Telephone: [phone]

978-671-5700

Fax: [phone]

Email: [e-mail]

When contacting Technical Support, please have the following
information available:

• Model number and serial number of the unit. This is
located on a label on the bottom of each unit.

• Approximate purchase date.

• Firmware revisions, which appear on the SCM4000
alphanumeric display System Menus > System Info
menu screen.

The SCM4000 Single Carrier Modem is designed to be compact,
rugged, and reliable.

The SCM4000 requires specialized test equipment and software
to calibrate amplitude and frequency characteristics after repair.

There are NO supported field repairs to the SCM4000 Single
Carrier Modem.

Return the entire unit for factory repair.

If you attempt field repair, you risk damaging your
equipment. If your equipment is under warranty, you may also

affect your warranty coverage.

1.10 Tell Us What You Think!

We’d appreciate any comments or suggestions you have about
this manual. The more feedback we get, the better the manuals
get!

If you’re viewing this manual electronically, it’s easy - just click on
the following link to send us an E-mail.

Feedback

Or, you can E-mail our Technical Support team at:

[e-mail].

Be sure to tell us what product you’re writing about, and which
manual - the Operator’s Guide, the Quick Reference Card, or the
Technical Reference Manual.

Introduction 1-3SCM4000 Operator’s Guide

This page intentionally left blank.

Introduction 1-4SCM4000 Operator’s Guide

2

Product Description

2.1 Chapter Overview

This chapter provides an overall description of the SCM4000
Single Carrier Modem (SCM), its components, and its
capabilities.

Here are the topics covered:

Topic Page

2.2 System Description

The SCM4000 (Figure 2-1) is a highly reliable, flexible, and
compact microwave Single Carrier Modem ideal for fixed or
mobile installations.

Figure 2-1: SCM4000

System Description

Configuration Options

Configuration Descriptions

Power Options 2-5

Mounting and Deployment
Options

System Integration 2-5

SCM4000 Configurations

SCM4000 Modulator

SCM4000 Demodulator

SCM4000 Modulator/
Demodulator

SCM4000 Modulator/Encoder 2-7

SCM4000 Demodulator/Decoder 2-8

For More Information

2-1

2-2

2-2

2-5

2-5

2-6

2-6

2-7

2-8

The SCM4000 is used for transmitting and/or receiving digital
signals and compressed video signals through microwave radio
communications links and provides maximum flexibility to
support multiple configuration requirements with user-friendly
Preset selections.

The SCM4000 is ideal for microwave fixed links for Studio to
Transmitter Links (STL), Transmitter to Studio Links (TSL), Inter­City Relay (ICR) service, Electronic News Gathering (ENG),
network distribution, satellite, and backhaul operations.

The SCM4000 is a versatile QAM modem designed to translate
between RS232/RS485, SMPTE310M, ASI, E3/DS3, T1/E1, and
10/100BaseT signals and 70 MHz IF.

The SCM4000 contains an RS232 interface to provide interface
connection for factory test purposes. A rear panel-mounted
connector is also provided to monitor summary alarms.

Product Description 2-1SCM4000 Operator’s Guide/Tech Ref Manual

Key features of the SCM4000 are as follows:

2.2.2 Configuration Descriptions

• The SCM4000 can be configured as a Modulator,
Demodulator, or both a Modulator and a Demodulator.

• Allows simplex or duplex operation depending upon the
SCM4000 configuration.

• Available with an optional MPEG Encoder or Decoder.

• Provides user control for functional parameters via front
panel controls and alphanumeric display.

• Modulation options include QPSK, 16 QAM, 32 QAM, and
64 QAM.

• Channel types accepted by the SCM4000 include DVB/
ASI, DS3/E3, T1/E1, RS232/RS485, 10/100 Ethernet,
and SMPTE310M.

2.2.1 Configuration Options

The SCM4000 is currently available in the following
configurations:

• SCM4000 Modulator

• SCM4000 Demodulator

• SCM4000 Modulator/Demodulator

• SCM4000 Modulator/Encoder

• SCM4000 Demodulator/Decoder

Consult your Sales Representative or contact the factory for the
latest information.

General The front panel of the SCM4000 (Figure 2-2 on page 2-

3) contains a POWER LED, an ALERT LED, an ALARM LED,

an alphanumeric display, and six function keys. The front panel
also contains an RS232 connector, located behind an access
cover, to provide interface connections to a Windows-based PC.

The rear panel of the SCM4000 contains the I/O connectors, the
input power connector, the power switch, and a fuse.

Controls, indicators, and connectors contained on all
configurations of the SCM4000 are identified and described in
the “Routine Operation” Chapter on page 3-1.

Modulator and Demodulator Configurations The base
Modulator and Demodulator configurations of the SCM4000
each contain one set of I/O connectors. See Figure 2-3 on

page 2-3 and Figure 2-4 on page 2-3.

Modulator/Demodulator Configuration The Modulator/
Demodulator configuration rear panel contains two sets of I/O
connectors. See Figure 2-5 on page 2-4.

Modulator/Encoder Configuration The Modulator/Encoder
configuration contains one set of I/O connectors, a VIDEO input
connector and two AUDIO connectors. See Figure 2-6 on

page 2-4.

Demodulator/Decoder Configuration The Demodulator/
Decoder configuration also contains one set of I/O connectors, a
VIDEO output connector and two AUDIO connectors. See

Figure 2-7 on page 2-4.

Product Description 2-2SCM4000 Operator’s Guide/Tech Ref Manual

Figure 2-2: SCM4000 Front Panel View

Figure 2-3: Modulator Rear Panel View

IF IN

POWER IN

IF OUT

T1/E1
10/100

1

2

1
ASI

DS3/E3

2
ASI

DS3/E3

3
ASI

SMPTE

RS232/485

SUM ALARM

AC Power
Option

DC Power
Option

Figure 2-4: Demodulator Rear Panel Rear View

IF IN

POWER IN

AC Power
Option

DC Power
Option

POWER IN

IF OUT

POWER IN

FUSE

FUSE

T1/E1
10/100

1

2

1
ASI

DS3/E3

2
ASI

DS3/E3

SMPTE

3
ASI

RS232/485

SUM ALARM

Product Description 2-3SCM4000 Operator’s Guide/Tech Ref Manual

Figure 2-5: Modulator/Demodulator Rear View

IF IN

POWER IN

IF OUT

T1/E1
10/100

1

2

1
ASI

DS3/E3

DS3/E3

2
ASI

3
ASI

SMPTE

RS232/485

SUM ALARM

T1/E1
10/100

1

2

DS3/E3

1
ASI

2
ASI

DS3/E3

SMPTE

3
ASI

RS232/485

SUM ALARM

AC Power
Option

DC Power
Option

Figure 2-6: Modulator/Encoder Rear View

IF IN

POWER IN

AC Power
Option

DC Power
Option

Figure 2-7: Demodulator/Decoder Rear View

IF IN

POWER IN

POWER IN

IF OUT

POWER IN

IF OUT

FUSE

1

2

FUSE

T1/E1
10/100

DS3/E3

AUDIO A

1
ASI

2
ASI

DS3/E3

VIDEO

3
ASI

SMPTE

Modulator
Section

RS232/485

SUM ALARM

Modulator
Section

AUDIO B

DS3/E3DS3/E3

VIDEO

2
ASI

3
ASI

SMPTE

AUDIO A AUDIO B

T1/E1
10/100

1

2

1
ASI

Demodulator
Section

Encoder
Section

RS232/485

SUM ALARM

AC Power
Option

DC Power
Option

POWER IN

FUSE

Decoder
Section

Demodulator
Section

Product Description 2-4SCM4000 Operator’s Guide/Tech Ref Manual

2.2.3 Power Options

The flexible architecture of the SCM4000 allows a number of
options for the power source. The SCM4000 configurations can
be ordered to operate on the following optional AC and DC
power sources:

• 120/240 VAC, 50/60 Hz

• +24 to +48 VDC

• -24 to -48 VDC

Fuse ratings for the optional AC and DC power sources are
shown in Table 2-1.

For more details on installation of the SCM4000 in various
applications, see the “Installation” Chapter on page 5-1 (part of
the SCM4000 Technical Reference Manual only).

2.2.5 System Integration

System Operation For the field operator, the SCM4000 has up
to nine Presets that can be selected from the front panel. Each
Preset controls key parameters such as modulation and audio
and video settings.

2.3 SCM4000 Configurations

Table 2-1: Fuse Ratings

Operating Voltage Fuse Rating

240 VAC, 50/60 Hz 1.0A, 250V AGC, Fast Blow

120 VAC, 50/60 Hz 2.0A, 250V AGC, Fast Blow

48 VDC 4.0A, 125V AGX, Fast Blow

24 VDC 7.5A, 32V AGC, Fast Blow

Refer to the “Installation” Chapter on page 5-1 (part of the
SCM4000 Technical Reference Manual only) for additional
installation information.

2.2.4 Mounting and Deployment Options

The SCM4000 may be used in either fixed or mobile
applications. For fixed or mobile installation applications, the
SCM4000 is usually mounted in a standard 19-inch (48.3 cm)
rack.

Typical SCM4000 Configuration Block Diagrams are provided in
the following paragraphs.

For details on connections between the SCM4000 and
transmitter or receiver components, refer to the “Installation”

Chapter on page 5-1 (part of the SCM4000 Technical Reference

Manual only).

Product Description 2-5SCM4000 Operator’s Guide/Tech Ref Manual

2.3.1 SCM4000 Modulator

2.3.2 SCM4000 Demodulator

The SCM4000 Modulator block diagram is shown in Figure 2-8.

Figure 2-8: SCM4000 Modulator Block Diagram

AC/DC

POWER

IF

OUT

POWER SUPPLY

E1/T1

10/100

E1/T1

10/100

POWER IMB

RS232/

485

MICROPROCESSOR

SCM

MODULATOR

STATUS

1

ASI

SUM

ALARM

MODULATOR
CORE BOARD

DS3/E3

INTERFACE BOARD

DISTRIBUTION COMMAND AND

CONTROL AND FRONT PANEL

DISPLAY KEYPAD

DS3/E3

IF

OUT

2

ASI

ASI

SMPTE

3

CONTROL
(RS232)

The SCM4000 Demodulator block diagram is shown in Figure 2-

9.

Figure 2-9: SCM4000 Demodulator Block Diagram

AC/DC

POWER

E1/T1

IF IN

10/100

POWER SUPPLY

E1/T1
10/100

POWER IMB

MICROPROCESSOR

RS232/

485

SCM

DEMODULATOR

STATUS

SUM

ALARM

INTERFACE BOARD

DEMODULATOR
CORE BOARD

DISTRIBUTION COMMAND AND

CONTROL AND FRONT PANEL

DISPLAY

1

ASI

DS3/E3

ASI

DS3/E3

IF IN

KEYPAD

2

ASI

SMPTE

3

CONTROL
(RS232)

Product Description 2-6SCM4000 Operator’s Guide/Tech Ref Manual

2.3.3 SCM4000 Modulator/Demodulator

2.3.4 SCM4000 Modulator/Encoder

The SCM4000 Modulator/Demodulator block diagram is shown
in Figure 2-10.

Figure 2-10: SCM4000 Modulator/Demodulator

2

SUM

ALARM

IMB

1

ASI

DS3/

E3

CONTROL
(RS232)

ASI

DS3/

3

ASI

E3

SMPTE

AC/DC

POWER

POWER SUPPLY

OUT

2

1

ASI

ASI

E1/T1

IF

IF IN

E1/T1

10/100

10/100

POWER

MICROPROCESSOR

MODULATOR

IMB

SCM

STATUS

RS232/
485

INTERFACE BOARD

MODULATOR
CORE BOARD

DS3/

SUM

E3

ALARM

IF OUT

DISTRIBUTION COMMAND AND

CONTROL AND FRONT PANEL

DISPLAY KEYPAD

DS3/

3

ASI

SMPTE

E3

E1/T1

10/100

E1/T1

10/100

INTERFACE BOARD

DEMODULATOR

IF IN

CORE BOARD

RS232/

485

SCM

DEMODULATOR

STATUS

POWER

The SCM4000 Modulator/Encoder block diagram is shown in

Figure 2-11.

Figure 2-11: SCM4000 Modulator/Encoder

AC/DC

POWER

POWER SUPPLY

OUT

E1/T1

IF

10/100

E1/T1

10/100 RS232/

485

INTERFACE BOARD

IMB

POWER

MODULATOR
CORE BOARD

MICROPROCESSOR

SCM

MODULATOR

STATUS

13

ASI

SUM

DS3/E3

ALARM

IF OUT

DISTRIBUTION COMMAND AND

CONTROL AND FRONT PANEL

DISPLAY KEYPAD

ASI

SMPTE AUDIOINAUDIO

VIDEO

IN

VIDEO TS

ASI OUT

MPEG ENCODER

IMB/

POWER

ENCODER

STATUS

IN

CONTROL
(RS232)

Product Description 2-7SCM4000 Operator’s Guide/Tech Ref Manual

2.3.5 SCM4000 Demodulator/Decoder

2.4 For More Information

The SCM4000 Demodulator/Decoder block diagram is shown in

Figure 2-12.

Figure 2-12: SCM4000 Demodulator/Decoder

AC/DC

POWER

POWER SUPPLY

IF IN

E1/T1

E1/T1

10/100

10/100 RS232/

POWER

MICROPROCESSOR

DEMODULATOR

485

INTERFACE BOARD

IMB

SCM

STATUS

1

ASI

SUM

DS3/

ALARM

DEMODULATOR
CORE BOARD

DISTRIBUTION COMMAND AND

CONTROL AND FRONT PANEL

DISPLAY KEYPAD

3

ASI

SMPTE AUDIO

E3

IF IN

VIDEO

ASI IN
(TRANSPORT
STREAM)

OUT

MPEG DECODER

OUT

IMB/

POWER

DECODER

STATUS

AUDIO

OUT

Additional detailed technical information about the SCM4000 is
contained in the SCM4000 Technical Reference Manual only.
Specific topics contained in the Technical Reference Manual are
listed below:

Topic Chapter

Connections to other
equipment

Installation See ”Installation” on page 5-1

Supported Repairs See ”Repair” on page 6-1

Repair Parts See ”Replacement Parts” on page 7-1

Block Diagram See ”Theory of Operation” on page 8-

See ”Installation” on page 5-1

1

CONTROL
(RS232)

Product Description 2-8SCM4000 Operator’s Guide/Tech Ref Manual

3

Routine Operation

Topic Page

3.1 Chapter Overview

This chapter provides basic information that will enable you to
operate your SCM4000 Single Carrier Modem. Here are the
topics covered:

Topic Page

Overview of Controls, Indicators and
Connectors

Preparing for Operation 3-10

Using the SCM4000 Screens 3-11

SCM4000 Monitor/Change Operations 3-19

SCM4000 Modulator Menu Operations 3-20

SCM4000 Demodulator Menu Operations 3-76

SCM4000 Modulator/Demodulator Menu
Operations

SCM4000 Modulator/Encoder Menu
Operations

SCM4000 MPEG Demodulator/Decoder
Menu Operations

SCM4000 System Menu Operations 3-152

3-1

3-117

3-118

3-135

SCM4000 Controls and Indicators 3-1

SCM4000 Modulator Connectors 3-3

SCM4000 Demodulator Connectors 3-4

SCM4000 Modulator/Demodulator
Connectors

SCM4000 Modulator/Encoder
Connectors

SCM4000 Demodulator/Decoder
Connectors

3-6

3-7

3-9

3.2.1 SCM4000 Controls and Indicators

Controls and indicators contained on the SCM4000 are identified
and described below. Topics covered are as follows:

Topic Page

Rear Panel Power Switch and Fuse 3-1

POWER LED 3-2

ALERT LED 3-2

ALARM LED 3-2

Alphanumeric Display 3-2

Function Keys 3-2

3.2 Overview of Controls, Indicators and Connectors

This section describes controls, indicators, and connectors used
on all configurations of the SCM4000. Here are the topics
covered.

Routine Operation 3-1SCM4000 Operator’s Guide/Tech Ref Manual

Controls and indicators contained on all configurations of the
SCM4000 are identical and are identified in Figure 3-1 on

page 3-2. Each of the controls and indicators are described in

more detail in the following paragraphs.

Rear Panel Power Switch and Fuse The power switch is used

to control application of AC or DC power to the SCM4000,

depending on the input power option ordered with your unit. The
power switch assembly also contains the input power fuse and
the AC/DC power connector.

POWER LED The green POWER LED is illuminated when

power is applied to the unit and the power switch is set to on

( I ) during normal operation.

ALERT LED The amber ALERT LED will illuminate when

system errors are present that do not cause the system to lose
service.

ALARM LED The red ALARM LED will illuminate when system

Figure 3-1: SCM4000 Controls, Indicators, and Connectors

errors are present that cause the system to lose service.

Alphanumeric Display The alphanumeric display provides the

user interface to enable local control of the state of the SCM4000
and to provide full monitoring capability for the system.

Function Keys The function keys provide user inputs to control

the menu system that appears on the alphanumeric display. The
function keys consist of four directional arrow keys, a SEL
(Select) key, and an ESC (Escape) key that are used to navigate
through the SCM4000 menus and to modify and monitor the
state of the SCM4000 system.

POWER
LED

Power
Switch

POWER IN

Fuse (Located
Under Safety
Cover)

IF IN

Rear View (AC Power Option)

ALERT
LED

ALARM
LED

Front View

Alphanumeric
Display

Rear View (DC Power Option)

Power
Switch

Function
Keys

Fuse

FUSE

POWER IN

Routine Operation 3-2SCM4000 Operator’s Guide/Tech Ref Manual Routine Operation 3-2SCM4000 Operator’s Guide/Tech Ref Manual

The function keys must be pressed and released to step through
individual menu selections, options, and settings. Each press
and release of a key moves the cursor only one step through the
menu selections, options, or settings. It may be necessary to
repeatedly press and release the key to reach or select the
required individual menu selection, option, or setting.

Please note that pressing and holding a key will not
automatically scroll through the menu selections, options, or
settings.

3.2.2 SCM4000 Modulator Connectors

Connectors contained on the Modulator configuration of the
SCM4000 are identified in Figure 3-2 on page 3-4 and are
described below. Connectors covered are as follows:

Topic Page

Modulator DB-9 Front Panel RS232
Connector

Modulator AC/DC Power Connector 3-3

Modulator BNC IF OUT Connector 3-3

Modulator RJ-45 T1/E1 10/100
Connectors

Modulator BNC 1 and 2 Connectors 3-3

Modulator BNC 3 Connector 3-3

Modulator DB-9 Rear Panel RS232/
485 Connector

Modulator DB-9 SUM ALARM
Connector

3-3

3-3

3-3

3-3

only).

Modulator DB-9 Front Panel RS232 Connector The RS232

DB-9 male connector is used for factory test and is located
behind an access cover.

Modulator AC/DC Power Connector The AC/DC power

connector provides connection to the removable external AC/DC
power cable. The power connector is part of the power switch
assembly.

Modulator BNC IF OUT Connector The IF OUT 75 ohm BNC

female connector provides the 70 MHz IF output signal.

Modulator RJ-45 T1/E1 10/100 Connectors The RJ-45 10/100

BaseT connectors provide T1/E1 or Ethernet connections.

Modulator BNC 1 and 2 Connectors The 1 ASI DS3/E3 and 2

ASI DS3/E3 75 ohm BNC female connectors provide ASI or

DS3/E3 inputs.

Modulator BNC 3 Connector The 3 ASI SMPTE 75 ohm BNC

female connector provides ASI or SMPTE310 inputs.

Modulator DB-9 Rear Panel RS232/485 Connector The

RS232/485 DB-9 female connector provides connections for
either RS232 or RS485 operation.

Modulator DB-9 SUM ALARM Connector The SUM ALARM

DB-9 female connector provides summary alarm data for
common faults and events.

See ”Installation” chapter on page 5-1 for connector pin

assignments (part of the SCM4000 Technical Reference Manual

Routine Operation 3-3SCM4000 Operator’s Guide/Tech Ref Manual

Figure 3-2: SCM4000 Modulator Connectors

RS232 Connector
(Behind Access
Cover)

AC Power

FRONT VIEW

Connector (AC
Option)

T1/E1
10/100

1

2

DS3/E3

REAR VIEW

POWER IN

DC Power Connector
(DC Option)

POWER IN

FUSE

IF IN

IF OUT
Connector

T1/E1 10/100
Connectors

IF OUT

3.2.3 SCM4000 Demodulator Connectors

Connectors contained on the Demodulator configuration of the
SCM4000 are identified in Figure 3-3 on page 3-5 and are
described below. Connectors covered are as follows:

Topic Page

Demodulator DB-9 Front Panel
RS232 Connector

Demodulator AC/DC Power
Connector

Demodulator BNC IF IN Connector 3-5

Demodulator RJ-45 T1/E1 10/100
Connectors

3-4

3-5

3-5

1
ASI

RS232/485
Connector

2
ASI

DS3/E3

3
ASI

SMPTE

RS232/485

SUM ALARM

Summary Alarm
Connector

ASI DS3/E3

Connectors

ASI SMPTE
Connector

(2 Each)

Demodulator BNC 1 and 2

3-5

Connectors

Demodulator BNC 3 Connector 3-5

Demodulator DB-9 Rear Panel

3-5

RS232/485 Connector

Demodulator DB-9 SUM ALARM

3-5

Connector

See ”Installation” chapter on page 5-1 for connector pin

assignments (part of the SCM4000 Technical Reference Manual
only).

Demodulator DB-9 Front Panel RS232 Connector The

RS232 DB-9 male connector is used for factory test and is

Routine Operation 3-4SCM4000 Operator’s Guide/Tech Ref Manual Routine Operation 3-4SCM4000 Operator’s Guide/Tech Ref Manual

located behind an access cover.

Demodulator AC/DC Power Connector The AC/DC power

connector provides connection to the removable external AC/DC
power cable. The power connector is part of the power switch
assembly.

Demodulator BNC 1 and 2 Connectors The 1 ASI DS3/E3

and 2 ASI DS3/E3 75 ohm BNC female connectors provide ASI
or DS3/E3 outputs.

Demodulator BNC 3 Connector The 3 ASI SMPTE 75 ohm

BNC female connector provides ASI or SMPTE310 outputs.

Demodulator BNC IF IN Connector The IF IN 75 ohm BNC

female connector provides the input connection for 70 MHz IF to
the unit.

Demodulator RJ-45 T1/E1 10/100 Connectors The RJ-45 10/

100 BaseT connectors provide T1/E1 or Ethernet connections.

Figure 3-3: SCM4000 Demodulator Connectors

RS232 Connector
(Behind Access
Cover)

AC Power
Connector
Option)

(AC

POWER IN

IF IN

FRONT VIEW

IF IN
Connector

IF OUT

Demodulator DB-9 Rear Panel RS232/485 Connector The

RS232/485 DB-9 female connector provides connections for
either RS232 or RS485 operation.

Demodulator DB-9 SUM ALARM Connector The SUM

ALARM DB-9 female connector provides summary alarm data

for common faults and events.

T1/E1 10/100
Connectors

1

2

T1/E1
10/100

1
ASI

DS3/E3

ASI SMPTE
Connector

2
ASI

DS3/E3

SMPTE

3
ASI

SUM ALARM

RS232/485
Connector

RS232/485

DC Power Connector
(DC Option)

POWER IN

FUSE

REAR VIEW

Routine Operation 3-5SCM4000 Operator’s Guide/Tech Ref Manual Routine Operation 3-5SCM4000 Operator’s Guide/Tech Ref Manual

ASI DS3/E3
Connectors

Summary Alarm
Connector

3.2.4 SCM4000 Modulator/Demodulator

test and is located behind an access cover.

Connectors

Connectors contained on the Modulator/Demodulator
configuration of the SCM4000 are identified in Figure 3-4 on

page 3-7 and are described below. Connectors covered are as

follows:

Topic Page

Modulator/Demodulator DB-9 Front
Panel RS232 Connector

Modulator/Demodulator AC/DC
Power Connector

Modulator/Demodulator BNC IF IN
Connector

Modulator/Demodulator BNC IF
OUT Connector

Modulator/Demodulator RJ-45 T1/
E1 10/100 Connectors

Modulator/Demodulator BNC 1 and
2 Connectors

Modulator/Demodulator BNC 3
Connectors

Modulator/Demodulator DB-9 Rear
Panel RS232/485 Connectors

Modulator/Demodulator DB-9 SUM
ALARM Connectors

See ”Installation” chapter on page 5-1 for connector pin

assignments (part of the SCM4000 Technical Reference Manual
only).

3-6

3-6

3-6

3-6

3-6

3-6

3-6

3-6

3-6

Modulator/Demodulator AC/DC Power Connector The AC/

DC power connector provides connection to the removable
external AC/DC power cable. The power connector is part of the
power switch assembly.

Modulator/Demodulator BNC IF IN Connector The IF IN 75

ohm BNC female connector provides the input connection for 70
MHz IF to the unit.

Modulator/Demodulator BNC IF OUT Connector The IF OUT

75 ohm BNC female connector provides the 70 MHz IF output
signal.

Modulator/Demodulator RJ-45 T1/E1 10/100 Connectors

The RJ-45 10/100 BaseT connectors provide T1/E1 or Ethernet
connections.

Modulator/Demodulator BNC 1 and 2 Connectors The 1 ASI

DS3/E3 and 2 ASI DS3/E3 75 ohm BNC female connectors

provide ASI or DS3/E3 inputs (Modulator) or outputs
(Demodulator).

Modulator/Demodulator BNC 3 Connectors The 3 ASI

SMPTE 75 ohm BNC female connectors provide ASI or

SMPTE310 inputs (Modulator) or outputs (Demodulator).

Modulator/Demodulator DB-9 Rear Panel RS232/485
Connectors The RS232/485 DB-9 female connectors provide

connections for either RS232 or RS485 operation.

Modulator/Demodulator DB-9 SUM ALARM Connectors The

SUM ALARM DB-9 female connectors provide summary alarm
data for common faults and events.

Modulator/Demodulator DB-9 Front Panel RS232
Connector The RS232 DB-9 male connector is used for factory

Routine Operation 3-6SCM4000 Operator’s Guide/Tech Ref Manual

Figure 3-4: SCM4000 Modulator/Demodulator Connectors

RS232 Connector
(Behind Access
Cover)

AC Power
Connector (AC
Option)

IF IN
Connector

POWER IN

IF OUT
Connector

IF IN

FRONT VIEW

IF OUT

T1/E1
10/100

1

2

T1/E1 10/100
Connectors

1
ASI

DS3/E3

DC Power Connector
(DC Option)

ASI DS3/E3

Connectors

FUSE

MODULATOR

(2 Each)

SECTION

POWER IN

REAR VIEW

3.2.5 SCM4000 Modulator/Encoder Connectors

Connectors contained on the Modulator/Encoder configuration of
the SCM4000 are identified in Figure 3-5 on page 3-8 and are
described below. Connectors covered are as follows:

Topic Page

Modulator/Encoder DB-9 Front
Panel RS232 Connector

Modulator/Encoder AC/DC Power
Connector

Modulator/Encoder BNC IF OUT
Connector

3-8

3-8

3-8

2
ASI

DS3/E3

RS232/485
Connector

3
ASI

SMPTE

RS232/485

SUM ALARM

ASI SMPTE
Connector

Modulator/Encoder RJ-45 T1/E1 10/
100 Connectors

Modulator/Encoder BNC 1
Connector

Modulator/Encoder BNC 3
Connector

Modulator/Encoder DB-9 Rear
Panel RS232/485 Connector

Modulator/Encoder DB-9 SUM
ALARM Connector

Modulator/Encoder BNC VIDEO
Connector

T1/E1 10/100
Connectors

T1/E1
10/100

1

2

Summary Alarm
Connector

1
ASI

DS3/E3

2
ASI

DS3/E3

ASI DS3/E3

Connectors

(2 Each)

ASI SMPTE
Connector

3
ASI

SMPTE

SUM ALARM

DEMODULATOR
SECTION

RS232/485
Connector

RS232/485

Summary Alarm
Connector

3-8

3-9

3-9

3-9

3-9

3-9

Routine Operation 3-7SCM4000 Operator’s Guide/Tech Ref Manual Routine Operation 3-7SCM4000 Operator’s Guide/Tech Ref Manual

Modulator/Encoder DB-9 AUDIO A

3-9

and B Connectors

See ”Installation” chapter on page 5-1 for connector pin

assignments (part of the SCM4000 Technical Reference Manual
only).

Modulator/Encoder DB-9 Front Panel RS232 Connector The

RS232 DB-9 male connector is used for factory test and is
located behind an access cover.

Figure 3-5: SCM4000 Modulator/Encoder Connectors

RS232 Connector
(Behind Access
Cover)

AC Power
Connector
Option)

(AC

IF OUT
Connector

FRONT VIEW

T1/E1 10/100
Connectors

Modulator/Encoder AC/DC Power Connector The AC/DC

power connector provides connection to the removable external
AC/DC power cable. The power connector is part of the power
switch assembly.

Modulator/Encoder BNC IF OUT Connector The IF OUT 75

ohm BNC female connector provides the 70 MHz IF output
signal.

Modulator/Encoder RJ-45 T1/E1 10/100 Connectors The RJ-

45 10/100 BaseT connectors provide T1/E1 or Ethernet
connections.

ASI SMPTE
Connector

RS232/485
Connector

VIDEO
Connector

POWER IN

DC Power Connector
(DC Option)

FUSE

POWER IN

IF IN

IF OUT

T1/E1
10/100

1

2

1
ASI

DS3/E3

2
ASI

DS3/E3

SMPTE

3
ASI

RS232/485

SUM ALARM

AUDIO A AUDIO B

VIDEO

ASI DS3/E3
Connector

MODULATOR
SECTION

Summary Alarm
Connector

AUDIO

Connectors

(2 Each)

ENCODER
SECTION

REAR VIEW

Routine Operation 3-8SCM4000 Operator’s Guide/Tech Ref Manual Routine Operation 3-8SCM4000 Operator’s Guide/Tech Ref Manual