Microwave Radio Communications STATXU044T1AK User Manual

STRATA TX

System

Manual Part No. 400504-1

Rev. A March 2005

Analog + Digital
Portable 3.4 to 13.25 GHz
Microwave Transmitter

Operator’s Guide

Notices

About This Manual

Part number 400504-1

Revision A - March 2005

The information in the manual applies to the Microwave Radio
Communications (MRC) STRATA TX System.

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.

© 2005 Microwave Radio Communications

Microwave Radio Communications

101 Billerica Avenue - Bldg. 6

North Billerica, MA 01862-1256USA

TEL: [phone]

FAX: [phone]

Printed in U.S.A.

Quality Certification

Microwave Radio Communications is certified to ISO 9001:2000.

Regulatory Status

This product is certified to conform to CENELEC standards EN
55020, EN 55013, EN 50082-1, and EN 60950 and carries the
CE mark.

Authorized EU representative: Vislink PLC.

Notices iSTRATA TX Operator’s Guide

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

WARNING: Electrostatic Discharge. Possible
Damage to Equipment

Fuse - Identifies fuses or their location.

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

Earth Ground - Identifies the earth Ground Terminal

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requires Adobe Acrobat,
version 4.0 or above.

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Notices iiSTRATA TX Operator’s Guide

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.

Warranty Information

Product 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 maintained 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 iiiSTRATA TX Operator’s Guide

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 ivSTRATA TX Operator’s Guide

Contents

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

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

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

Product Manufactured by MRC: - - - - - - - - - - - - - - - iii

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

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

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

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

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

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

System Options - - - - - - - - - - - - - - - - - - - - - - - - 2-2

Single Unit Systems - - - - - - - - - - - - - - - - - - - - - 2-3

Multi-Unit Systems - - - - - - - - - - - - - - - - - - - - - - 2-3

Remote Control Options - - - - - - - - - - - - - - - - - - 2-3

Antenna and Power Options - - - - - - - - - - - - - - - 2-3

Mounting and Deployment Options - - - - - - - - - - - 2-5
System Integration - - - - - - - - - - - - - - - - - - - - - - 2-5

System Components - - - - - - - - - - - - - - - - - - - - - - - 2-7

STRATA TXU - - - - - - - - - - - - - - - - - - - - - - - - - - 2-7
STRATA TCU - - - - - - - - - - - - - - - - - - - - - - - - - - 2-7
STRATA ACU - - - - - - - - - - - - - - - - - - - - - - - - - - 2-8

STRATA Remote Control Panels - - - - - - - - - - - - 2-8
TXU and TCU Configurations - - - - - - - - - - - - - - - - - 2-9
Typical System Configurations - - - - - - - - - - - - - - - 2-12
For More Information - - - - - - - - - - - - - - - - - - - - - - 2-12

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

Chapter Overview - - - - - - - - - - - - - - - - - - - - - - - - - 3-1
Overview of Controls, Indicators, and Connectors - - - 3-2

TXU Controls, Indicators, and Connectors - - - - - - 3-2

TCU Controls, Indicators, and Connectors - - - - - - 3-5

ACU Controls, Indicators, and Connectors- - - - - - 3-8

STRATA Standard Remote Control Panel Controls, Indi-

cators, and Connectors - - - - - - - - - - - - - - - - - - - - - - - - 3-9

STRATA Aircraft Remote Control Panel Controls, Indica-

tors, and Connectors - - - - - - - - - - - - - - - - - - - - - - - - - - 3-9

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

Mobile Installation - - - - - - - - - - - - - - - - - - - - - - 3-10

Portable Deployment - - - - - - - - - - - - - - - - - - - - 3-10

Powering the STRATA TX System - - - - - - - - - - 3-12

Single TCU Power Up and Power Down - - - - - - 3-13

Single TXU Power up and Power Down- - - - - - - 3-14

TXU and TCU Power Up and Power Down - Co-Located

3-15

TXU and TCU Power Up and Power Down - Separate Lo-

cations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-17

Using the STRATA TX Screens - - - - - - - - - - - - - - - 3-19
TXU and/or TCU Monitoring Operations - - - - - - - - - 3-20

Here are the tasks described:

Contents-1STRATA TX Operator’s Guide

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-20
Using the Monitor Screens in MPEG Output Mode 3-20
Using the Monitor Screens in Ext IF Input Mode 3-22
Using the Monitor Screens in COFDM - IF Mode 3-23
Using the Monitor Screens in COFDM ASI In Mode 3-24
Using the Monitor Screens in Analog - IF Mode - 3-25
Using the Monitor Screens in DVB-S Mode- - - - 3-26

TXU and/or TCU Control Operations - - - - - - - - - - - 3-27

Changing a Preset - - - - - - - - - - - - - - - - - - - - - 3-29
Setting a Channel - - - - - - - - - - - - - - - - - - - - - - 3-30
Setting Power Output - - - - - - - - - - - - - - - - - - - 3-31
Controlling TCU to TXU DC Power on Coax - - - 3-32

Front Panel vs. STRATA TX Configurator Settings - 3-34

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

Chapter Overview - - - - - - - - - - - - - - - - - - - - - - - - - 4-1
Status LED - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-1
Messages on Display- - - - - - - - - - - - - - - - - - - - - - - 4-1
Error Codes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-3

Primary Error Code- - - - - - - - - - - - - - - - - - - - - - 4-3
Error Status - - - - - - - - - - - - - - - - - - - - - - - - - - 4-8
Unit ID - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-8

Operational Problems - - - - - - - - - - - - - - - - - - - - - - 4-8

Channels & Frequencies - - - - - - - - - - - - - - - A-1

Appendix Overview - - - - - - - - - - - - - - - - - - - - - - - - A-1
Initial Factory Presets - - - - - - - - - - - - - - - - - - - - - - A-1

3.4 to 3.8 GHz Channel Plan - - - - - - - - - - - - - - - A-1

4.4 to 5.0 GHz Channel Plan - - - - - - - - - - - - - - - A-2

6.4 to 7.1 GHz Channel Plan - - - - - - - - - - - - - - - A-2

6.9 to 7.5 GHz Channel Plan - - - - - - - - - - - - - - - A-3

7.4 to 8.0 GHz Channel Plan - - - - - - - - - - - - - - - A-3

7.8 to 8.5 GHz Channel Plan - - - - - - - - - - - - - - - A-4

8.2 to 8.9 GHz Channel Plan - - - - - - - - - - - - - - - A-4

10.0 to 10.7 GHz Channel Plan - - - - - - - - - - - - - A-5

10.5 to 11.2 GHz Channel Plan - - - - - - - - - - - - - A-5

10.8 to 11.5 GHz Channel Plan - - - - - - - - - - - - - A-6

12.7 to 13.25 GHz Channel Plan- - - - - - - - - - - - - A-6

Glossary - - - - - - - - - - - - - - - - - - - - - - - - - - - B-1

Contents-2STRATA TX Operator’s Guide

1

Introduction

1.1 Chapter Overview

1.3 How It’s Organized

The manuals for the STRATA TX System are organized as
follows:

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

1.2 What This Manual Covers

This manual describes how to operate the STRATA TX
Transmitter System.

For information on Installation, Repair, Replacement Parts, and
Theory of Operation, refer to the STRATA TX Technical
Reference Manual.

This manual also covers various configurations of the STRATA
TX System. Your STRATA TX System will consist of one of the
following configurations:

• A Standalone Transmitter Control Unit (TCU)

• A Standalone Transmitter Unit (TXU)

• A TCU and TXU.

Your TX System may be mounted on a tripod or may be mounted
in a vehicle or in an aircraft. Your TX System may also include an
optional MRC AC to DC Converter Unit (ACU).

If your system is mounted in a vehicle or in an aircraft, it may
include an optional MRC Remote Control Panel or Aircraft
Remote Control Panel. This manual provides coverage for all of
these various configurations.

Chapter

Introduction

Product Description

Routine Operation

Advanced Operation

Installation

Troubleshooting

Repair

Replacement Parts

Theory of Operation

Appendix A - Channels
& Frequencies

Appendix B - Glossary

Appendix C ­Configurator Reference

Operator’s

Guide

Technical

Reference

Manual

Introduction 1-1STRATA TX Operator’s Guide

Note

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

Tuesday - Friday

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

(0800 - 1900 hrs US ET)

Telephone: [phone]

1.4 For Whom It’s Written

This manual is intended for use by personnel assigned to
operate the STRATA TX System. Users of this manual should
already be familiar with basic concepts of radio, video, and
audio.

1.5 Related Documents

• STRATA TX System Technical Reference Manual

(part no. 400505-1)

• STRATA TX System Quick Reference Card

(part no. 400506-1)

• STRATA Aircraft Remote Control Panel Operator’s Guide

(part no. 400490)

• STRATA Remote Control Panel Operator’s Guide
(part no. 400489)

1.6 Ordering Documentation

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

978-671-5700

Fax: [phone]

When contacting Customer Service, 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 revision, which appears on the TXU or TCU
alphanumeric display at startup.

or

• Firmware revision(s) displayed on the Main page of the
STRATA TX Configurator, when the STRATA TX
Configurator is connected to the TXU or TCU.

1.7 Calling for Service

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 - 5:00 PM Eastern Time (US)

(0800 - 1700 hrs US ET)

Business Hours: Monday

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

(0800 - 1700 hrs US ET)

Introduction 1-2STRATA TX Operator’s Guide

Tuesday - Friday

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

(0800 - 1900 hrs US ET)

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

affect your warranty coverage.

Telephone: [phone]

978-671-5700

Fax: [phone]

E-mail: [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 revision, which appears on the TXU or TCU
alphanumeric display at startup.

1.8 Supported Repairs

The STRATA TX System, including the TXU, TCU, and optional
ACU, is designed to be compact, rugged and reliable.

1.9 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 link below 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.

The TXU and TCU require specialized test equipment to
calibrate amplitude and frequency characteristics after repair. In
addition, sealing the TXU, TCU, or optional ACU enclosures
after repair requires exacting techniques and special fixtures to
ensure weather resistance of the units.

Therefore, there are NO supported field repairs to either the
TXU, TCU, or ACU.

Return the entire unit for factory repair.

Introduction 1-3STRATA TX Operator’s Guide

This page intentionally left blank.

Introduction 1-4STRATA TX Operator’s Guide

2

Product Description

2.1 Chapter Overview

This chapter provides an overall description of the STRATA TX
System, its components, and its capabilities.

Here are the topics covered:

2.2 System Description

The STRATA TX System is a highly reliable, flexible, and
compact portable microwave transmitter system ideal for tripod,
airborne, or mobile installations. A typical STRATA TX System is
composed of the Transmitter Unit (TXU) and the Transmitter
Control Unit (TCU), as shown in Figure 2-1 on page 2-2. This
modular architecture allows you the maximum flexibility in
configuration, siting, and operation.

The STRATA TX System key features are:

Topic Page

System Description 2-1

System Options 2-2

Single Unit Systems 2-3

Multi-Unit Systems 2-3

Remote Control Options 2-3

Antenna and Power Options 2-3

Mounting and Deployment Options 2-5

System Integration 2-5

System Components 2-7

STRATA TXU 2-7

STRATA TCU 2-7

STRATA ACU 2-8

STRATA Remote Control Panels 2-8

TXU and TCU Configurations 2-9

Typical System Configurations 2-12

For More Information 2-12

• Analog, Digital, or Analog/Digital Switchable

• MPEG Encoding (4:2:0, 4:2:2)

• COFDM Modulation with Selectable Guard Band Interval

• Digital Modulation for QPSK, 16 QAM, and 64 QAM

• NTSC or PAL Modulation with Audio (4 mono or 2 stereo)

• Tripod, Half Rack, or Full Rack Mounts

• Front Panel Local Control

• Remote Control

• Bands from 3.4 to 13.25 GHz

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

Figure 2-1: STRATA TX System Block Diagram

1.84 MHz OOK Tone

y NTSC
y PAL
y SDI
y ASI
y IF

IN

RS-232

Telemetry

TCU TXU

DC Power and/or IF

+28 VDC

The STRATA TX System TXU and the TCU may be operated in
stand-alone configurations depending upon specific video
applications.

2.2.1 System Options

The STRATA TX System can be ordered configured for 1 of 11
specific RF bands as follows:

• 3.4 to 3.9 GHz

• 4.4 to 5.0 GHz

• 6.4 to 7.1 GHz

• 6.9 to 7.5 GHz

• 7.4 to 8.1 GHz

• 7.8 to 8.5 GHz

• 8.2 to 8.9 GHz

Telemetry

RF Out

RS-232

+28 VDC

• 10.0 to 10.7 GHz

• 10.5 to 11.2 GHz

• 10.8 to 11.5 GHz

• 12.7 to 13.25 GHz

MRC is constantly working to expand and upgrade the
capabilities of the STRATA TX System. Consult your Sales
Representative or contact the factory for the latest band
availability.

The STRATA TX System (typically) consists of the following
components:

TXU The Transmitter Unit (TXU) can be equipped with either an
FM Modulator or COFDM/MPEG module, but not both. A High
Power Unit (HPU) is also contained within the TXU housing to
increase RF power output.

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

TCU The Transmitter Control Unit (TCU) can be equipped with
either an FM Modulator or COFDM/MPEG module, or both.

where the transmitter needs to be placed in another
location.

ACU The optional AC to DC Power Converter (ACU) provides
+28 VDC power from an AC power source to power one or more
units in a system.

Remote Control Panels Optional Remote Control Panels are
available to allow remote control of the STRATA TX System from
an instrument panel during airborne or mobile operations.

2.2.2 Single Unit Systems

The TXU or TCU may be used independently in single-unit
applications as follows:

• The TXU may be used as a stand-alone transmitter
accepting an IF input.

• The TXU may be used as a stand-alone transmitter
featuring FMT modulation or MPEG and COFDM.

• The TCU may be used as a stand-alone unit used for
FMT modulation or MPEG and COFDM, or both FMT
modulation and MPEG and COFDM.

2.2.3 Multi-Unit Systems

The TXU and TCU can be configured as part of an integrated
system as follows:

• The TCU may contain the FMT modulator and MPEG/
COFDM module supplying an IF signal to a TXU
containing only the RF transmitter.

• The TXU may contain the RF modulator or MPEG/
COFDM module supplying an RF signal directly to the
transmitter antenna.

2.2.4 Remote Control Options

For portable mobile or airborne operations, the STRATA TX
System may be controlled by one of two models of Remote
Control Panels. The Remote Control Panels are mounted in
mobile racks or aircraft instrument panels and are connected via
an RS-232 cable between the Remote Control Panel and the
STRATA TX System.

2.2.5 Antenna and Power Options

The flexible architecture of the STRATA TX System allows a
number of options for both the transmit antenna and the power.

Antenna Options The STRATA TX System is fully compatible
with the MRC family of transmit antennas, including:

• OmniPole omnidirectional

• Megahorn compact horn

• SectorScan flat panel

• MicroScan parabolic

• Ellipse parabolic

Contact your Sales Representative to explore the wide array of
antenna choices available.

CAUTION

To prevent damage to your STRATA TX
System, MRC recommends using a +28
VDC power supply. Do not exceed +36
VDC input power or damage will occur.

• The TCU can be separated from the TXU in applications

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

Power Options The STRATA TX System configurations
operate on +28 VDC power, supplied externally. This DC power
can be supplied by the optional STRATA ACU, or from another
DC power source. Contact your Sales Representative for the
latest details.

Note

A TCU and TXU are defined as being “co-located”
when the TXU and TCU are physically separated
by not greater than 6 feet.

supply must be greater than +24 VDC.

Refer to the “Installation” Chapter on page 6-1 (part of the
STRATA TX Technical Reference Manual only) for additional
information.

For those applications that use a TCU in a standalone mode, i.e.,
to generate ASI or DVB-S signals, DC power from the TCU to
the TXU or from the TXU to the TCU cannot be used.

Figure 2-3: Powering the TXU from the TCU

If the TXU and TCU are co-located, power must be supplied to
each unit through their individual power connectors from the
same power source. See Figure 2-2. Do not use DC on coax to
power the TXU or TCU when the units are co-located.

Figure 2-2: Powering the TXU and TCU Independently

STRATA

TXU

DC Power (+28 V)

If your installation calls for separating the TXU and TCU, the
TXU is powered by DC supplied by the TCU or the TCU is
powered by DC supplied by the TXU. The DC power is
superimposed on the coaxial cable connected between the units.
See Figure 2-3 and Figure 2-4.

STRATA

TCU

Branched
Power Cable

STRATA

Coax

TXU

Up to 600 ft.

(180 m)

DC Power (+28 V)

Figure 2-4: Powering the TCU from the TXU

Coax

STRATA

TXU

Up to 600 ft.

(180 m)

DC Power (+28 V )

STRATA

TCU

Power
Cable

STRATA

TCU

The DC input voltage to the unit co-located with the DC power

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

DC power superimposed on the coaxial cable between a TCU
and a TXU can be supplied from either the TCU or TXU,
depending upon the location of the DC power supply. Coaxial
cable length/voltage limitations exist when powering from either
the TXU or TCU. These limitations are based on cable size, DC
voltage input, cable resistance, and cable length. A maximum
length of 600 feet (180 meters) between the TXU and TCU is
supported. Contact MRC Technical Support for more information
on cable requirements.

DC power required for a STRATA TX System depends upon the
TX System configuration, i.e., if the TXU or TCU are operated in
a standalone mode, if the TXU and TCU are co-located, or if the
TXU and TCU are mounted in separate locations. See Figure 2-

5 on page 2-6 for the various STRATA TX System configurations

available.

For TX Systems that use DC power sources other than a
STRATA ACU, contact MRC Technical Support for additional
power information.

2.2.6 Mounting and Deployment Options

The STRATA TX offers a number of options for either mobile or
portable applications.

For more details on installation of the STRATA TX in various
applications, see the “Installation” Chapter on page 6-1 (part of
the STRATA TX Technical Reference Manual only).

Mobile Installation For mobile applications such as in a vehicle
or in an aircraft, the STRATA TX System is usually mounted in an
MRC fixed mounting bracket and is installed in a bulkhead or
compartment. The cabling is permanently installed and power
comes from aircraft or vehicle power.

Portable Deployment In portable applications, the STRATA TX

System will be moved from place to place and set up each time.
The TXU and TCU will usually be mounted in a MRC universal
mounting bracket. The bracket is attached to a tripod using a
mounting plate and quick release.

The cabling between the TXU and TCU is typically left in place
and the power, antenna, and audio/video connections are
removed at the end of each deployment.

2.2.7 System Integration

System Communication When the TXU and TCU are
connected, they automatically communicate via signals
superimposed on the coaxial cable between the two units. This
allows them to share information on installed hardware, preset
configurations, current status, and alarms.

System Operation Once the TXU and TCU are connected and
communicating, the units work seamlessly together. System
settings can be selected and modified from the front panel of
either unit, regardless of which unit holds the hardware being
configured.

System Configuration The STRATA TX System offers two
levels of system configuration, designed to match the needs of
different personnel.

For the field operator, the STRATA TX System has up to 9
Presets that can be selected from the front panel. Each Preset
controls key parameters such as modulation, frequency, and
audio and video settings. Additional settings that are front panel­controlled include band, channel, offset, and filtering.

For the advanced operator and technical staff, the STRATA TX
Configurator software allows complete control of all parameters
in the STRATA TX System. The STRATA TX Configurator
software runs on a Windows-based PC and connects to either
the TXU or the TCU via an RS-232 serial interface cable.

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

Interfacing a PC to either the TXU or TCU in a connected system
gives you complete control of both units. You can read the
current settings, program new settings, or return the units to their
factory default settings. The STRATA TX Configurator software

Figure 2-5: STRATA TX System Options

automatically detects what hardware is installed in the system
and assigns the appropriate configuration to the correct
hardware, regardless of which unit holds the hardware being
configured.

NTSC or PAL Video
with 4 Audio Channels
Available

SDI, ASI, NTSC, or PAL
Video + Audio

Analog Video or
Digital Video + Audio

NTSC or PAL Video
with 4 Audio Channels
Available

70 MHz IF Input Only

SDI, ASI, NTSC, or PAL
+ Digitial/Analog Audio

TCU

COFDM / MPEG

& FMT

Monitor

TCU

COFDM / MPEG

Monitor

TCU

FMT Only

TXU

RF/IF Only

TXU

FMT Option

TXU

COFDM / MPEG
Option

TXU

RF/IF Only

TXU

RF/IF Only

TXU

RF/IF Only

3.4 to 13.25 GHz

RF Output

RXU

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

2.3 System Components

This section will provide more details about each the
components of a STRATA TX System:

•STRATA TXU

• STRATA TCU

•STRATA ACU

• STRATA Remote Control Panels

For details on connections between the STRATA TX System
components, refer to the “Installation” chapter (part of the
STRATA TX Technical Reference Manual only).

2.3.1 STRATA TXU

The TXU (Figure 2-6) always contains an IF/RF module that
accepts either a 70 MHz COFDM, FMT IF, or external 70 MHz
input signal and up-converts these signals to the required RF
band. The RF frequency synthesizer circuit included in the IF/RF
unit, in conjunction with the command and control power supply
module, provides the means to channelize RF video and audio
signals in the TX System RF band.

The TXU, with either an analog (FMT) or digital (MPEG/COFDM)
module, is integrated in the same housing as the HPU
components. This provides the ability to incorporate high RF
power output (12 watts of saturated RF power) into a single
analog or digital transmitter assembly.

Figure 2-6: STRATA TXU

Standard U.S. FCC band plans, as well as customer-created
channel plans, may be customized using the STRATA TX
Configurator software.

As noted previously, the TXU may also include either an MPEG/
CODFM or FMT module (but not both), in which case the TXU
serves as a stand-alone digital or analog video microwave
transmission system.

2.3.2 STRATA TCU

The TCU (Figure 2-7 on page 2-8) may contain either analog or
digital or both analog and digital video modulation modules.
Where an application might initially employ only analog video
transmission but expects to migrate to dual, switchable, analog
and digital operation, the TCU may be upgraded to add the
MPEG/COFDM module to add this capability.

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

Figure 2-7: STRATA TCU

OUTPUT

< >

DC

Figure 2-8: AC to DC Converter

< >

DC

OUTPUT

Where only digital or analog video transmission is desired, the
MPEG/COFDM or FMT modules may be installed in a TXU,
thereby eliminating the need for a TCU. The STRATA TX design
does not permit splitting digital and analog video modulator
modules between a TXU and a TCU.

A TCU may also consist of a stand-alone configuration whereby
either or both MPEG/COFDM and FMT modules may be used
independent of the TXU. This configuration permits use of a TCU
equipped with analog and/or digital video modulation modules
for a variety of signal input and output configurations, including a
digital option using NTSC or PAL composite video input and ASI
(digital) signal output.

2.3.3 STRATA ACU

For fixed or portable deployment applications, the STRATA TX
System may be powered by the optional AC to DC Converter
(ACU). Figure 2-8.

The ACU installs as part of an integrated stack for either tripod or
fixed applications. The ACU may also be used to power the TXU
or TCU only when a TXU and TCU are not co-located. In this
case, the TXU would receive DC power from the TCU or the
TCU would receive DC power from the TXU superimposed on
the coaxial cable connected between the units.

In standalone TXU or TCU operations, the optional ACU may be
used to supply DC power directly to the applicable unit. In the
case where a TXU and a TCU are co-located, it is recommended
that both the TXU and TCU be powered directly from the ACU in
lieu of supplying DC power from the TCU to the TXU or from the
TXU to the TCU via the coaxial cable connected between the
units.

2.3.4 STRATA Remote Control Panels

For mobile or airborne operations, two Remote Control Panel
models are currently available. Contact your Sales
Representative for the latest information.

Both Remote Control Panel models provide simplified transmit

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

operations by allowing the operator or pilot to select either
analog or digital pre-configured Presets, Channels, and Offsets,
depending upon the required operating mode.

Standard Remote Control Panel The standard STRATA
Remote Control Panel (Figure 2-9) provides instrument panel
remote control of the STRATA TX System for mobile operations
and features 9 selectable Presets.

For additional information, refer to the STRATA Remote Control
Panel Operator’s Guide (part no. 400489).

Figure 2-9: Standard Remote Control Panel

For additional information, refer to the STRATA Aircraft Remote
Control Panel Operator’s Guide (part no. 400490).

Figure 2-10: Aircraft Remote Control Panel

2.4 TXU and TCU Configurations

TXU Different configurations of the TXU are available,
depending upon if your TX System contains a standalone TXU or
if your TX System contains both a TXU and TCU. The different
configurations are described below.

Aircraft Remote Control Panel The STRATA Aircraft Remote
Control Panel (Figure 2-10) is a simplified version of the
standard STRATA Remote Control Panel. This panel provides
instrument panel remote control of the STRATA TX System for
airborne operations. This model features only two Presets for
ease of operation.

The unit is designed to fit a standard aircraft instrument panel
and provides user-friendly controls, combined with well placed
and easy to read LED displays and color indicators.

Product Description 2-9STRATA TX Operator’s Guide/Tech Ref Manual

If your TXU is equipped with either an analog (FMT) module or a
digital (MPEG/COFDM) module and was ordered to operate in a
standalone mode without a TCU, the front panel will contain an

AUDIO connector. See Figure 2-11 on page 2-10.

Figure 2-11: Standalone TXU Configuration

Figure 2-12: TXU - TXU with TCU Configuration

DO NOT
EXCEED
36 VOLTS DC

AUDIO

Connector

SIGNAL INPUT

Connector

Front View

PWR/RS-485

Connector

If your TXU was ordered to operate with a TCU, it will not contain
either analog or digital modules and will therefore not contain an

AUDIO connector. The AUDIO connector is replaced by a DC
ON COAX switch. See Figure 2-12.

The DC ON COAX switch allows manual control of DC power to
the TXU from the TCU or from the TCU to the TXU via DC power
superimposed on the coaxial cable connected between the two
units.

The rear of the TXU is identical on both configurations of the
TXU, as shown in Figure 2-12.

DC ON COAX
Switch

SIGNAL INPUT

Connector

DC
ON COAX

OFF ON

Front View

Rear View

DO NOT
EXCEED
36 VOLTS DC

PWR/RS-485

Connector

RF Output

Connector

RS-232

Connector

Product Description 2-10STRATA TX Operator’s Guide/Tech Ref Manual

TCU Several different configurations of the TCU also exist as
the result of technical updates. Configuration differences are
described below.

DC power to a TXU.

Figure 2-14: TCU - Newer Configuration

TCU - Older Configuration If your TCU is an older
configuration, the controls and connectors contained on the TCU
are similar to those shown in Figure 2-13. Older configurations
do not contain the front panel DC ON COAX override switch to
provide manual control of DC power to a TXU.

Figure 2-13: TCU - Older Configuration

TX

RS-232
Connector

POWER

Connector

SIGNAL OUT

Connector

TCU

Front View

Monitor (MON)

Connector

XMIT

AUDIO

Connector

RS-232
Connector

POWER

Connector

SIGNAL OUT

Connector

TX

TCU

Front View

Monitor (MON)

Connector

Rear View

XMIT

DC ON COAX
Switch

AUDIO

Connector

SIGNAL IN

Connector

Rear View

SIGNAL IN

Connector

TCU - Newer Configuration If your TCU is the newer
configuration, the controls and connectors contained on the TCU
are similar to those shown in Figure 2-14. A DC ON COAX
switch is located on the front panel to provide manual control of

Product Description 2-11STRATA TX Operator’s Guide/Tech Ref Manual

2.5 Typical System Configurations

2.6 For More Information

Typical STRATA TX System configurations are shown in Figure

2-15.

Figure 2-15: STRATA TX System Configurations

Additional detailed technical information about the STRATA TX
System is contained in the STRATA TX Technical Reference
Manual. Specific topics contained in the Technical Reference
Manual are listed below:

Topic Chapter

Installation See Chapter 6, “Installation”

Connections to other
equipment

Changing settings using
the Configurator software

Block Diagram See Chapter 9, “Theory of

Supported Repairs See Chapter 7, “Repair”

Repair Parts See Chapter 8, “Replacement

See Chapter 6, “Installation”

See Chapter 5, “Advanced

Operation”

Operation”

Parts”

Product Description 2-12STRATA TX Operator’s Guide/Tech Ref Manual

3

Routine Operation

3.1 Chapter Overview

This chapter provides basic information that will enable you to
operate your STRATA TX System.

Here are the topics covered:

Topic Page

Overview of Controls, Indicators, and
Connectors

TCU Controls, Indicators, and
Connectors

TCU Controls, Indicators, and
Connectors

ACU Controls, Indicators, and
Connectors

STRATA Standard Remote Control
Panel Controls, Indicators, and
Connectors

STRATA Aircraft Remote Control Panel
Controls, Indicators, and Connectors

Preparing for Operation 3-10

Mobile Installation 3-10

Portable Deployment 3-10

Powering the STRATA TX System 3-12

Single TCU Power Up and Power Down 3-13

3-2

3-5

3-5

3-8

3-9

3-9

Using the STRATA TX Screens 3-19

TXU and/or TCU Monitoring Operations 3-20

Using the Monitor Screens in MPEG
Output Mode

Using the Monitor Screens in Ext IF
Input Mode

Using the Monitor Screens in COFDM ­IF Mode

Using the Monitor Screens in COFDM
ASI In Mode

Using the Monitor Screens in Analog ­IF Mode

Using the Monitor Screens in DVB-S
Mode

TXU and/or TCU Control Operations 3-27

Changing a Preset 3-29

Setting a Channel 3-30

Setting Power Output 3-31

Controlling TCU to TXU DC Power on
Coax

Front Panel vs. STRATA TX Configurator
Settings

3-20

3-22

3-23

3-24

3-25

3-26

3-32

3-34

Information on settings made with the STRATA TX Configurator
software can be found in the “Advanced Operation” Chapter on

page 5-1 (part of the STRATA TX System Technical Reference

Manual only).

Single TXU Power up and Power Down 3-14

TXU and TCU Power Up and Power
Down - Co-Located

TXU and TCU Power Up and Power
Down - Separate Locations

3-15

3-17

For a summary of settings that can be made with the TXU and
TCU front panel control switches and which settings are made
using the STRATA TX Configurator, see Section 3.7 on page 3-

34.

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

3.2 Overview of Controls, Indicators,
and Connectors

Figure 3-1: TXU Controls, Indicators, and Connectors - Front
View

This section describes the controls, indicators, and connectors
used on the STRATA TX System.

3.2.1 TXU Controls, Indicators, and Connectors

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

Topic Page

TXU Front Panel DC ON COAX
Switch

TXU SIGNAL INPUT Connector 3-3

TXU AUDIO Connector 3-3

TXU Alphanumeric Display 3-3

TXU XMIT LED 3-3

TXU Status LED 3-4

TXU PWR/RS-485 Connector 3-4

TXU PWR Switch 3-4

TXU Control Switch 3-4

TXU RF Output Connector 3-5

TXU RS-232 Connector 3-5

Each of these controls, indicators, and connectors are described
in more detail in the following paragraphs.

Controls, indicators, and connectors contained on the TXU front
panel are shown in Figure 3-1. Connectors contained on the
TXU rear panel are shown in Figure 3-2 on page 3-3. For
configuration differences in the TXU, see “TXU and TCU

Configurations” on page 2-9.

3-2

XMIT

DC
ON COAX

OFF ON

DC ON COAX
Switch or AUDIO
Connector

SIGNAL
INPUT
Connector

LED

Alpha-

numeric
Display

Status
LED

DO NOT
EXCEED
36 VOLTS DC

Control
Switch

PWR/RS-485

Connector

Power
Switch

The TXU is configured using Windows PC-based STRATA TX
Configurator software. For details, see the “Advanced Operation”

Chapter on page 5-1 (part of the STRATA TX System Technical

Reference Manual only).

TXU Front Panel DC ON COAX Switch DC ON COAX

switches are not contained on all configurations of the TXU. For
configuration differences, see Section 2.4 on page 2-9.

If your STRATA TX System contains both a TXU and a TCU, the
System allows you to power the TXU using DC power supplied
from the TCU or allows you to power the TCU using DC power
from the TXU. This DC power is superimposed on the coaxial
cable between the TCU and the TXU. This DC power option is
used when the TCU and the TXU must be deployed in two
separate locations.

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

Figure 3-2: TXU Controls, Indicators, and Connectors - Rear
View

•The 75 Ohm Coax option on the Command Screen.

RF Output
Connector

RS-232

Connector

When the TCU and TXU are co-located, MRC recommends both
units be powered from the same DC power source.

If your STRATA TX System does not contain a TCU, the DC ON
COAX switch will not be present and an AUDIO connector will
be mounted in place of the switch.

If your STRATA TX System contains both a TXU and a TCU, the
System gives you several ways to control DC power on the
coaxial cable from the TCU to the TXU, depending on the
configurations of your TCU and TXU:

•The DC ON COAX switch on the front panel of the TCU
(See Figure 3-3 on page 3-6) and the DC ON COAX
switch on the front panel of the TXU (Figure 3-1 on

page 3-2).

Both control methods must be enabled for DC power to be
operational if your TCU and TXU configurations both contain the
DC ON COAX switches. If the DC ON COAX switch is not
present on your TCU, DC power can only be applied using the

75 Ohm Coax option on the command screen. The TXU DC ON
COAX switch must be set to ON in either situation.

TXU SIGNAL INPUT Connector The BNC INPUT connector

provides the IF or video input to the TXU.

TXU AUDIO Connector AUDIO connectors are not contained

on all configurations of the TXU. For configuration differences,
see Section 2.4 on page 2-9.

If your TXU contains an AUDIO connector, all audio inputs are
applied to the front panel mounted 10-pin connector.

TXU Alphanumeric Display The TXU contains a two-line by

12-character alphanumeric display. The display works in
conjunction with the Control Switch to allow you to monitor
system status and to control system settings.

TXU XMIT LED When the TXU Control Switch is pressed for

one second, the transmitter changes from the standby mode to
the transmit mode or changes from the transmit mode to the
standby mode. When the transmitter is in the transmit mode, the
XMIT LED illuminates blue. When the transmitter is in the
standby mode, the XMIT LED is off.

If your STRATA TX System contains both a TXU and a TCU,
pressing the Control switch on either the TXU or TCU will
change the transmitter to the transmit mode or to the standby
mode. The XMIT LED on both units will be on or off, depending

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