UBS Axcera HU5000AD 5000-Watt UHF Digital Transmitter User Manual Title Page vol 1

UBS-Axcera 5000-Watt UHF Digital Transmitter Title Page vol 1

Compiled Users Manual Volume 1

Instruction Manual
Innovator HX Series
Digital UHF
Solid State
Transmitter
Volume 1
System and Exciter/Control
AXCERA, LLC
103 FREEDOM DRIVE • P.O. BOX 525 • LAWRENCE, PA 15055-0525 USA
(724) 873-8100 • FAX (724) 873-8105
www.axcera.com • service@axcera.com
Innovator HX Series Digital Table of Contents
UHF Transmitter
Volume 1, Rev. 0 i November 01, 2007
TABLE OF CONTENTS
CHAPTER 1 INTRODUCTION
SECTION PAGE
1.1 Manual Overview...................................................................................1-1
1.2 Assembly Designators............................................................................1-1
1.3 Safety..................................................................................................1-1
1.4 Contact Information...............................................................................1-2
1.5 Material Return Procedure ......................................................................1-2
1.6 Limited One-Year Warranty for Axcera Products........................................1-3
CHAPTER 2 SYSTEM DESCRIPTION AND REMOTE CONTROL CONNECTIONS
2.0 System Overview ..................................................................................2-1
2.1 HX Exciter Description............................................................................2-1
2.1.1 Pre Filter Sample..........................................................................2-2
2.1.2 Post Filter Sample ........................................................................2-2
2.2 UHF Amplifier Cabinet Assembly .............................................................2-2
2.3 RF Output Assemblies............................................................................2-2
2.4 Exciter Amplifier Chassis Assembly..........................................................2-4
2.4.1 Control & Monitoring/Power Supply Module.....................................2-4
2.4.2 Exciter Power Amplifier Module......................................................2-5
2.5 Control and Status.................................................................................2-6
2.5.1 Front Panel LCD Display Screens....................................................2-6
2.6 System Operation..................................................................................2-6
2.6.1 Principles of Operation..................................................................2-6
2.7 Maintenance .........................................................................................2-7
2.8 Customer Remote Connections......................................................... 2-8
CHAPTER 3 SITE CONSIDERATIONS, INSTALLATION AND SETUP PROCEDURES
3.1 Site Considerations................................................................................3-1
3.2 Unpacking the Control/Exciter and Amplifier Cabinets................................3-4
3.3 Installing of the Cabinets........................................................................3-5
3.3.1 Exciter/Control Cabinet.................................................................3-6
3.3.2 Placement and Assembling of the UHF Amplifier Cabinets.................3-6
3.3.3 Blower Connections to TB1............................................................3-6
3.4 AC Input...............................................................................................3-6
3.4.1 Main AC Connection to the Control/Exciter Cabinet ..........................3-7
3.4.2 Main AC Connections to each of the Amplifier Cabinets.....................3-7
3.5 Setup and Operation..............................................................................3-7
3.5.1 Input Connections........................................................................3-7
3.6 Initial Turn On.......................................................................................3-9
3.6.1 Driver Amplifier Front Panel LED Indicators.....................................3-9
3.6.1.1 Upconverter Module LEDs on Front Panel...............................3-9
3.6.1.2 Controller Module LEDs on Front Panel ..................................3-9
3.6.1.3 Power Amplifier Module LEDs on Front Panel..........................3-9
3.6.2 Front Panel Screens for the Driver Amplifier Chassis Assembly........3-10
3.6.3 Front Panel Touch Screens for the UHF Transmitter .......................3-18
3.6.4 Operation Procedure...................................................................3-23
Innovator HX Series Digital Table of Contents
UHF Transmitter
Volume 1, Rev. 0 ii November 01, 2007
TABLE OF CONTENTS (continued)
SECTION PAGE
CHAPTER 4 CIRCUIT DESCRIPTIONS
4.1 (R1) Control/Exciter Cabinet Assembly ....................................................4-1
4.1.1 Dual Peak Detector Board .............................................................4-1
4.1.2 Serial Loop-Thru Board .................................................................4-1
4.2 Driver/Amplifier Chassis Assembly ..........................................................4-2
4.2.1 Control Monitoring/Power Supply Module........................................4-2
4.2.1.1 Power Protection Board........................................................4-2
4.2.1.1.1 +12 VDC Circuits ......................................................4-2
4.2.1.1.2 -12 VDC Circuits .......................................................4-3
4.2.1.2 Control Board .....................................................................4-3
4.2.1.2.1 Schematic Page 1 .....................................................4-3
4.2.1.2.2 Schematic Page 2 .....................................................4-4
4.2.1.2.3 Schematic Page 3 .....................................................4-4
4.2.1.2.4 Schematic Page 4 .....................................................4-4
4.2.1.2.5 Schematic Page 5 .....................................................4-5
4.2.1.3 Switch Board ......................................................................4-5
4.2.1.4 Switching Power Supply Assembly ........................................4-6
4.2.2 Driver Power Amplifier Assembly Module ........................................4-6
4.2.2.1 1 Watt UHF Module Assembly...............................................4-6
4.2.2.2 1 Watt UHF Amplifier Board..................................................4-6
4.2.2.3 UHF Module Assembly .........................................................4-7
4.2.2.4 Coupler Board Assembly ......................................................4-7
4.2.2.5 Amplifier Control Board........................................................4-7
4.2.2.5.1 Schematic Page 1 .....................................................4-7
4.2.2.5.2 Schematic Page 2 .....................................................4-8
4.2.2.5.3 Current Monitoring Sections of the Board.....................4-8
4.2.2.5.4 Schematic Page 3 Digital & Reflected Power Detectors ..4-9
CHAPTER 5 DETAILED ALIGNMENT PROCEDURES
5.1 System Preparation ...............................................................................5-1
5.2 Module Replacement..............................................................................5-1
5.3 Initial Test Setup...................................................................................5-1
5.4 Setting Up the Output Power of the Transmitter........................................5-2
5.4.1 Setting Up of AGC 1 .....................................................................5-2
5.4.2 Setting Up of AGC 2 .....................................................................5-3
5.4.3 Setting Up of Overdrive Threshold..................................................5-3
5.4.4 Setting Up Axciter Relay Sample Values..........................................5-3
5.4.5 Upconverter Downconverter Adjustment.........................................5-4
5.5. System Calibration of Forward and Reflected Powers using the HX Driver...5-4
5.5.1 Forward Power Calibration.............................................................5-4
5.5.2 Reflected Power Calibration...........................................................5-4
Innovator HX Series Digital Table of Contents
UHF Transmitter
Volume 1, Rev. 0 iii November 01, 2007
TABLE OF CONTENTS (continued)
APPENDICES
APPENDIX A SYSTEM SPECIFICATIONS
APPENDIX B SYSTEM DRAWINGS AND PARTS LISTS
APPENDIX C CONTROL CABINET DRAWINGS AND PARTS LISTS
APPENDIX D UHF DRIVER/AMPLIFIER ASSEMBLY
DRAWINGS AND PARTS LISTS
Innovator HX Series Digital Table of Contents
UHF Transmitter
Volume 1, Rev. 0 iv November 01, 2007
LIST OF FIGURES
FIGURE PAGE
1-1 Brady Marker Identification Drawing.................................................1-1
2-1 Driver/Amplifier Chassis Assembly Front View ...................................2-3
2-2 Driver/Amplifier Chassis Assembly Rear View ....................................2-8
3-1 1 kW Minimum Ventilation Configuration...........................................3-4
3-2 Typical Front View 15 kW................................................................3-5
3-3 Typical Front View UHF Amplifier Cabinet..........................................3-6
3-4 TB1 Fan Control Connections...........................................................3-6
3-5 AC Input Connections to Control/Exciter Cabinet................................3-7
3-6 AC Input Connections to Amplifier Cabinet ........................................3-7
3-7 Rear View HX Series Digital Driver/Amplifier .....................................3-8
3-8 Control/Exciter Cabinet Screen ......................................................3-18
3-9 Amplifier Cabinet and Transmitter Configuration Screen ...................3-19
3-10 Amplifier Cabinet Screen w/System Error List..................................3-20
3-11 Control Cabinet Screen w/System Error List....................................3-21
3-12 Serial Port Configuration Screen.....................................................3-22
5-1 Axciter Upconverter Main Screen......................................................5-3
Innovator HX Series Digital Table of Contents
UHF Transmitter
Volume 1, Rev. 0 v November 01, 2007
LIST OF TABLES
TABLE PAGE
2-1 HX Series Trays and Assemblies.......................................................2-3
2-2 Controller/Power Supply Front Panel Display .....................................2-4
2-3 Controller/Power Supply Front Panel Status Indicators .......................2-4
2-4 Controller/Power Supply Front Panel Control Adjustments...................2-5
2-5 Power Amplifier Front Panel Status Indicators....................................2-5
2-6 Power Amplifier Front Panel Control Adjustments...............................2-6
2-7 Power Amplifier Front Panel Samples................................................2-6
2-8 HX Series Chassis Customer Remote Connections ..................... 2-8
3-1 HX Series Transmitter AC Input and Current Requirements.................3-1
3-2 Rear Chassis Connections for HX Series Digital Transmitter ................3-8
HX Series Driver/Amplifier Controller Menu Screens .......................................3-10
3-3 Menu 01 Splash Screen #1............................................................3-10
3-4 Menu 02 Splash Screen #2............................................................3-10
3-5 Menu 10 Main Screen ................................................................3-10
3-6 Menu 11 Error List Access Screen................................................3-11
3-7 Menu 12 Transmitter Device Data Access Screen...........................3-11
3-8 Menu 13 Transmitter Configuration Access Screen.........................3-11
3-9 Menu 20 Error List Display Screen...............................................3-12
3-10 Menu 30 Transmitter Device Details Screen..................................3-12
3-11 Menu 30-1 System Details Screens..............................................3-12
3-12 Transmitter Device Parameters Detail Screens..............................3-13
3-13 Menu 40 Authorized Personnel Screen .........................................3-14
3-14 Menu 40-1 Transmitter Set Up: Power Control Screen ...................3-15
3-15 Menu 40-3 Transmitter Set Up: Model Select Screen .....................3-15
3-15 Menu 40-3 Transmitter Set Up: Model Select Screen .....................3-15
3-16 Menu 40-4 Transmitter Set Up: Upconverter Channel Select Screen 3-15
3-17 Menu 40-5 Transmitter Set Up: Serial Address Screen ...................3-16
3-18 Menu 40-5 Transmitter Set Up: System Forward Power Cal. Screen...3-16
3-19 Menu 40-9 Transmitter Set Up: System Rfltd. Power Cal. Screen ......3-16
3-20 Menu 40-13 Transmitter Set Up: Min Fw Pwr Fault Threshold Screen.3-16
3-21 Menu 40-14 Transmitter Set Up: Max Refl Power Flt Threshold Scrn 3-17
3-22 Menu 40-18 Transmitter Set Up: Inner Loop Gain Control Screen....3-17
3-23 Menu 40-19 Transmitter Set Up: Amplifier Module Control Screen...3-17
3-24 Menu 40-19 Transmitter Set Up: Remote Command Control Screen 3-17
4-1 DIP Switch Settings for SW2 located on Exciter Control Board.............4-4
4-2 Module OK LED Red and Blinking Interpretation.................................4-7
Innovator™ HX Series Digital Chapter 1, Introduction
UHF Transmitter
Volume 1, Rev. 0 1-1
Chapter 1
Introduction
The InnovatorTM HX Series Digital UHF
Transmitter is comprised of two cabinet
types, the exciter/control cabinet and
the UHF amplifier cabinet. The
InnovatorTM HX Series Transmitter
includes one or more UHF Amplifier
cabinets depending on the power
configuration ordered.
1.1 Manual Overview
This instruction manual is divided into
two volumes. Volume 1 contains
information on the System and Control
Cabinet and Volume 2 contains
information on the UHF Amplifier
Cabinet.
Volume 1 contains five chapters and
supporting appendices. Chapter 1,
Introduction, contains information on
safety, return procedures, and
warranties. Chapter 2 contains the
system and assembly descriptions.
Chapter 3 describes the installation and
set up procedures and the operation of
the overall transmitter. Chapter 4
contains the detailed circuit descriptions
of the boards and subassemblies that are
contained in the transmitter. Chapter 5
describes the alignment of the overall
transmitter. Appendix A contains the
system specifications. Appendix B
contains the system drawings and parts
list. Appendix C contains the Control
Cabinet interconnects, schematics,
assembly drawings and parts lists.
Appendix D contains the driver/amplifier
chassis assembly interconnects,
schematics, assembly drawings and parts
lists.
1.2 Assembly Designators
Axcera has assigned assembly numbers,
Ax designations, where x=1,2,3…etc, to
all assemblies, modules, and boards in
the system. These designations are
referenced in the text of this manual and
shown on the block diagrams and
interconnect drawings provided in the
appendices. The Block Diagrams,
Interconnects, Schematics, Assembly
Drawings and Parts Lists are arranged in
increasing numerical order in the
appendices. Section titles in the text for
assembly or module descriptions or
alignment procedures contain the
associated part number(s) and the
relevant appendix that contains the
drawings for that item.
The cables that connect between the
boards within a tray or assembly and
that connect between the trays, racks
and cabinets are labeled using Brady
markers. Figure 1-1 is an example of a
Brady marked cable. There may be as
few as two or as many as four Markers
on any one cable. These Brady markers
are read starting farthest from the
connector. If there are four Brady
Markers, this marker is the transmitter
number such as transmitter 1 or
Transmitter 2. The next or the farthest
Brady Marker is the rack or cabinet
number on an interconnect cable or the
board number within a tray. The next
number on an interconnect cable is the
Tray location or number. The Brady
marker closest to the connector is the
Jack or Connector number on an
interconnect cable or the jack or
connector number on the board within a
tray.
Figure 1-1 Brady Marker Identification
Drawing
1.3 Safety
It is important that any user of this
equipment read all of the instructions,
especially the safety information in this
chapter, before operating the
transmitter.
Innovator™ HX Series Digital Chapter 1, Introduction
UHF Transmitter
Volume 1, Rev. 0 1-2
Products manufactured by Axcera are
designed to be easy to use and repair
while providing protection from electrical
and mechanical hazards. Listed
throughout the manual are notes,
cautions, and warnings concerning
possible safety hazards that may be
encountered while operating or servicing
the product. Please review these
warnings and familiarize yourself with the
operation and servicing procedures
before working on the product.
Read All Instructions – All of the
operating and safety instructions should
be read and understood before operating
this equipment.
Retain Manuals – The manuals for the
equipment should be retained at the site
in which the equipment is operating for
future reference. We provide two sets of
manuals for this purpose; one set can be
left at the office while one set can be
kept at the site.
Heed all Notes, Warnings, and
Cautions – All of the notes, warnings,
and cautions listed in this safety section
and throughout the manual must be
followed.
Follow Instructions – All of the
operating and use instructions for the
product should be followed.
Cleaning – Unplug or otherwise
disconnect all power from the equipment
before cleaning. Do not use liquid or
aerosol cleaners. Use a damp cloth for
cleaning.
Servicing – Do not attempt to service
this product yourself until becoming
familiar with the equipment. If in doubt,
refer all servicing questions to qualified
Axcera service personnel.
Replacement Parts – When
replacement parts are needed, be sure
that the parts have the same functional
and performance characteristics as the
original part. Unauthorized substitutions
may result in fire, electric shock, or other
hazards. Please contact the Axcera
Technical Service Department if you have
any questions regarding service or
replacement parts.
1.4 Contact Information
The Axcera Field Service Department can
be contacted by phone at 1-724-873-
8100 or by fax at 1-724-873-8105.
Before calling Axcera, please be prepared
to supply the Axcera technician with
answers to the following questions. This
will save time and help ensure the most
direct resolution to the problem.
1. What are the Customers’ Name and
call letters?
2. What are the model number and
type of transmitter?
3. Is the transmitter digital or analog?
4. How long has the transmitter been
on the air? (Approximately, when
was the transmitter installed?)
5. What are the symptoms being
exhibited by the transmitter? Include
the current control/power supply
LCD and touch screen readings. Also
the status of LEDs on the front
panels of the modules. If possible,
include the control/power supply LCD
and touch screen readings before the
problem occurred.
1.5 Material Return Procedure
To insure the efficient handling of
equipment or components that have
been returned for repair, Axcera
requests that each returned item be
accompanied by a Return Material
Authorization Number (RMA#). An
RMA# can be obtained from any Axcera
Service Engineer by contacting the
Axcera Technical Service Department at
1-724-873-8100 or by fax at 1-724-
873-8105. This procedure applies to all
items sent to the Technical Service
Department regardless of whether the
item was originally manufactured by
Axcera.
Innovator™ HX Series Digital Chapter 1, Introduction
UHF Transmitter
Volume 1, Rev. 0 1-3
When equipment is sent to the field on
loan, an RMA# is included with the unit.
The RMA# is intended to be used when
the unit is returned to Axcera. In
addition, all shipping material should be
retained for the return of the unit to
Axcera. Replacement assemblies are
also sent with an RMA# to allow for the
proper routing of the exchanged
hardware. Failure to close out this type of
RMA# will normally result in the customer
being invoiced for the value of the loaner
item or the exchange assembly.
When shipping an item to Axcera, please
include the RMA# on the packing list and
on the Axcera-provided shipping
container. The packing slip should also
include contact information and a brief
description of why the unit is being
returned.
Please forward all RMA items to:
Axcera
Customer Service Department
103 Freedom Drive
P.O. Box 525
Lawrence, PA 15055-0525 USA
For more information, concerning this
procedure, call the Axcera Customer
Service Department.
Axcera can also be contacted through e-
mail at service@axcera.com and on the
Web at www.axcera.com.
1.6 Limited One-Year Warranty
for Axcera Products
Axcera warrants each new product that
it has manufactured and sold against
defects in material and workmanship
under normal use and service for a
period of one (1) year from the date of
shipment from Axcera's plant, when
operated in accordance with Axcera's
operating instructions. This warranty
shall not apply to tubes, fuses,
batteries, or bulbs.
Warranties are valid only when and if
(a) Axcera receives prompt written
notice of breach within the period of
warranty, (b) the defective product is
properly packed and returned by the
buyer (transportation and insurance
prepaid), and (c) Axcera determines, in
its sole judgment, that the product is
defective and not subject to any misuse,
neglect, improper installation,
negligence, accident, or (unless
authorized in writing by Axcera) repair
or alteration. Axcera's exclusive liability
for any personal and/or property
damage (including direct, consequential,
or incidental) caused by the breach of
any or all warranties, shall be limited to
the following: (a) repairing or replacing
(in Axcera's sole discretion) any
defective parts free of charge (F.O.B.
Axcera’s plant) and/or (b) crediting (in
Axcera's sole discretion) all or a portion
of the purchase price to the buyer.
Equipment furnished by Axcera, but not
bearing its trade name, shall bear no
warranties other than the special hours-
of-use or other warranties extended by
or enforceable against the manufacturer
at the time of delivery to the buyer.
NO WARRANTIES, WHETHER
STATUTORY, EXPRESSED, OR
IMPLIED, AND NO WARRANTIES OF
MERCHANTABILITY, FITNESS FOR
ANY PARTICULAR PURPOSE, OR
FREEDOM FROM INFRINGEMENT,
OR THE LIKE, OTHER THAN AS
SPECIFIED IN PATENT LIABILITY
ARTICLES, AND IN THIS ARTICLE,
SHALL APPLY TO THE EQUIPMENT
FURNISHED HEREUNDER.
Innovator™ HX Series Digital Chapter 1, Introduction
UHF Transmitter
Volume 1, Rev. 0 1-4
F WARNING!!!
× HIGH VOLTAGE Ø
DO NOT ATTEMPT TO REPAIR OR TROUBLESHOOT THIS EQUIPMENT UNLESS
YOU ARE FAMILIAR WITH ITS OPERATION AND EXPERIENCED IN
SERVICING HIGH VOLTAGE EQUIPMENT. LETHAL VOLTAGES ARE PRESENT
WHEN POWER IS APPLIED TO THIS SYSTEM. IF POSSIBLE, TURN OFF
POWER BEFORE MAKING ADJUSTMENTS TO THE SYSTEM.
« RADIO FREQUENCY RADIATION HAZARD «
MICROWAVE, RF AMPLIFIERS AND TUBES GENERATE HAZARDOUS RF
RADIATION THAT CAN CAUSE SEVERE INJURY INCLUDING CATARACTS,
WHICH CAN RESULT IN BLINDNESS. SOME CARDIAC PACEMAKERS MAY BE
AFFECTED BY THE RF ENERGY EMITTED BY RF AND MICROWAVE
AMPLIFIERS. NEVER OPERATE THE TRANSMITTER SYSTEM WITHOUT A
PROPERLY MATCHED RF ENERGY ABSORBING LOAD ATTACHED. KEEP
PERSONNEL AWAY FROM OPEN WAVEGUIDES AND ANTENNAS. NEVER
LOOK INTO AN OPEN WAVEGUIDE OR ANTENNA. MONITOR ALL PARTS OF
THE RF SYSTEM FOR RADIATION LEAKAGE AT REGULAR INTERVALS.
Innovator™ HX Series Digital Chapter 1, Introduction
UHF Transmitter
Volume 1, Rev. 0 1-5
EMERGENCY FIRST AID INSTRUCTIONS
Personnel engaged in the installation, operation, or maintenance of this equipment are urged to become
familiar with the following rules both in theory and practice. It is the duty of all operating personnel to be
prepared to give adequate Emergency First Aid and thereby prevent avoidable loss of life.
RESCUE BREATHING
1. Find out if the person is
breathing.
You must find out if the person
has stopped breathing. If you
think he is not breathing, place
him flat on his back. Put your ear
close to his mouth and look at his
chest. If he is breathing you can
feel the air on your cheek. You
can see his chest move up and
down. If you do not feel the air
or see the chest move, he is not
breathing.
2. If he is not breathing, open
the airway by tilting his head
backwards.
Lift up his neck with one hand
and push down on his forehead
with the other. This opens the
airway. Sometimes doing this will
let the person breathe again by
himself.
3. If he is still not breathing,
begin rescue breathing.
-Keep his head tilted backward.
Pinch nose shut.
-Put your mouth tightly over his
mouth.
-Blow into his mouth once every
five seconds
-DO NOT STOP rescue breathing
until help arrives.
LOOSEN CLOTHING - KEEP
WARM
Do this when the victim is
breathing by himself or help is
available. Keep him as quiet as
possible and from becoming
chilled. Otherwise treat him for
shock.
BURNS
SKIN REDDENED: Apply ice cold water to burned
area to prevent burn from going deeper into skin
tissue. Cover area with a clean sheet or cloth to
keep away air. Consult a physician.
SKIN BLISTERED OR FLESH CHARRED: Apply
ice cold water to burned area to prevent burn from
going deeper into skin tissue.
Cover area with clean sheet or cloth to keep away
air. Treat victim for shock and take to hospital.
EXTENSIVE BURN - SKIN BROKEN: Cover area
with clean sheet or cloth to keep away air. Treat
victim for shock and take to hospital.
Innovator™ HX Series Digital Chapter 1, Introduction
UHF Transmitter
Volume 1, Rev. 0 1-6
dBm, dBw, dBmV, dBµV, & VOLTAGE
EXPRESSED IN WATTS
50 Ohm System
WATTS PREFIX dBm dBw dBmV dBµV VOLTAGE
1,000,000,000,000 1 TERAWATT +150
+120
100,000,000,000 100 GIGAWATTS +140
+110
10,000,000,000 10 GIGAWATTS +130
+100
1,000,000,000 1 GIGAWATT +120
+ 99
100,000,000 100 MEGAWATTS +110
+ 80
10,000,000 10 MEGAWATTS +100
+ 70
1,000,000 1 MEGAWATT + 90 + 60
100,000
100 KILOWATTS + 80 + 50
10,000 10 KILOWATTS + 70 + 40
1,000 1 KILOWATT + 60 + 30
100 1 HECTROWATT + 50 + 20
50 + 47 + 17
20 + 43 + 13
10 1 DECAWATT + 40 + 10
1 1 WATT + 30 0 + 77 +137 7.07V
0.1 1 DECIWATT + 20 - 10 + 67 +127 2.24V
0.01 1 CENTIWATT + 10 - 20 + 57 +117 0.707V
0.001 1 MILLIWATT 0 - 30 + 47 +107 224mV
0.0001 100 MICROWATTS - 10 - 40
0.00001
10 MICROWATTS - 20 - 50
0.000001 1 MICROWATT - 30 - 60
0.0000001 100 NANOWATTS - 40 - 70
0.00000001 10 NANOWATTS - 50 - 80
0.000000001 1 NANOWATT - 60 - 90
0.0000000001 100 PICOWATTS - 70 -100
0.00000000001 10 PICOWATTS - 80 -110
0.000000000001 1 PICOWATT - 90 -120
TEMPERATURE CONVERSION
°F = 32 + [(9/5) °C]
°C = [(5/9) (°F - 32)]
Innovator™ HX Series Digital Chapter 1, Introduction
UHF Transmitter
Volume 1, Rev. 0 1-7
USEFUL CONVERSION FACTORS
TO CONVERT FROM TO MULTIPLY BY
mile (US statute) kilometer (km) 1.609347
inch (in) millimeter (mm) 25.4
inch (in) centimeter (cm) 2.54
inch (in) meter (m) 0.0254
foot (ft) meter (m) 0.3048
yard (yd) meter (m) 0.9144
mile per hour (mph) kilometer per hour(km/hr) 1.60934
mile per hour (mph) meter per second (m/s) 0.44704
pound (lb) kilogram (kg) 0.4535924
gallon (gal) liter 3.7854118
U.S. liquid
(One U.S. gallon equals 0.8327 Canadian gallon)
fluid ounce (fl oz) milliliters (ml) 29.57353
British Thermal Unit watt (W) 0.2930711
per hour (Btu/hr)
horsepower (hp) watt (W) 746
NOMENCLATURE OF FREQUENCY BANDS
FREQUENCY RANGE DESIGNATION
3 to 30 kHz VLF - Very Low Frequency
30 to 300 kHz LF - Low Frequency
300 to 3000 kHz MF - Medium Frequency
3 to 30 MHz HF - High Frequency
30 to 300 MHz VHF - Very High Frequency
300 to 3000 MHz UHF - Ultrahigh Frequency
3 to 30 GHz SHF - Superhigh Frequency
30 to 300 GHz EHF - Extremely High Frequency
LETTER DESIGNATIONS FOR UPPER FREQUENCY BANDS
LETTER FREQ. BAND
L 1000 - 2000 MHz
S 2000 - 4000 MHz
C 4000 - 8000 MHz
X 8000 - 12000 MHz
Ku 12 - 18 GHz
K 18 - 27 GHz
Ka 27 - 40 GHz
V 40 - 75 GHz
W 75 - 110 GHz
Innovator™ HX Series Digital Chapter 1, Introduction
UHF Transmitter
Volume 1, Rev. 0 1-8
RETURN LOSS VS. VSWR
1.001 1.01 1.1 2.0
VSWR
0
-
10
-
20
-
30
-
40
-
50
-
60
-
70
R
E
T
U
R
N
L
O
S
S
dB
Innovator™ HX Series Digital Chapter 1, Introduction
UHF Transmitter
Volume 1, Rev. 0 1-9
ABBREVIATIONS/ACRONYMS
AC Alternating Current
AFC Automatic Frequency Control
ALC Automatic Level Control
AM Amplitude modulation
AGC Automatic Gain Control
ATSC Advanced Television Systems
Committee
AWG American wire gauge
BER Bit Error Rate
BW Bandwidth
DC Direct Current
D/A Digital to analog
DTV Digital Television
dB Decibel
dBm Decibel referenced to 1 milliwatt
dBmV Decibel referenced to 1 millivolt
dBw Decibel referenced to 1 watt
FEC Forward Error Correction
FM Frequency modulation
Hz Hertz
ICPM Incidental Carrier Phase Modulation
I/P Input
IF Intermediate Frequency
LED Light emitting diode
LSB Lower Sideband
MPEG Motion Pictures Expert Group
O/P Output
PLL Phase Locked Loop
PCB Printed circuit board
QAM Quadrature Amplitude Modulation
SMPTE Society of Motion Picture and
Television Engineers
VSB Vestigial Side Band
Innovator™ HX Series Digital Chapter 2, System Description
UHF Transmitter and Remote Control Connections
Volume 1, Rev. 0 2-1
Chapter 2
System Description and Remote Control Connections
2.0 System Overview
Each Innovator HX Series UHF
transmitter system consists of an
Exciter/Driver System Control Cabinet
and one or more RF Power Amplifier
(PA) Cabinets each of which has a
maximum power output of 5 kW DTV.
Volume 1, this volume, contains
information on the system and the
exciter/control cabinet. The information
and drawings on the UHF Power
Amplifier Cabinet are contained in
Volume 2.
The Exciter/Driver System Control
Cabinet contains a computer with a
touch screen, keyboard and mouse and
a UPS power supply. Also part of the
exciter/driver cabinet are an HX Series
Driver/Amplifier Assembly and an
Axciter Modulator. An external Dual
Peak Detector Board generates a
forward and a reflected power sample
for metering purposes in the
driver/amplifier assembly. A Serial
Loop-Thru board is part of the cabinet
assembly and provides system serial
interface connection to both the Axciter
and the Driver/Amplifier Assembly. A
relay is also part of the cabinet
assembly and is used to switch the pre-
filer and post-filter samples to the
Axciter Modulator for use by the
Adaptive Digital Equalization.
NOTE: Refer to the separate Axciter
Modulator Instruction Manual for detailed
information on the Axciter Modulator
Tray and the Upconverter and
Downconverter Modules mounted in the
exciter/driver chassis assembly.
2.1 HX Exciter
The HX Exciter with Axciter accepts the
SMPTE-310 encoded digital video and
performs all processing necessary to
create an ATSC compatible RF output.
The exciter is equipped with a high-speed
digital signal processing system that
monitors not only the incoming digital
video signal but also the amplified RF
signal before it is filtered and after it is
filtered. The Axciter monitors the output of
the RF amplifier cabinet or combiner, which
is the pre filter sample (non-linear
distortion), and the after filter sample
(linear distortion), from the output of the
DTV Filter. The Axciter automatically
computes pre-correction information that is
used to produce the highest quality over-
the-air 8VSB signal output possible. This
system is called Adaptive Digital
Equalization.
The Exciter consists of the (A22) Axciter
Modulator, the Axciter Upconverter module
and the Axciter Downconverter module
mounted in the Driver/Amplifier Assembly,
the (A3) Driver/Amplifier Assembly and the
(A4) Dual Peak Detector Board.
The output of the (A22) Axciter Modulator,
at J40 the IF output jack (-12 dBm, .06
mW), connects to J15 the Modulated IF
input jack on the (A3) Driver/Amplifier
Assembly. The modulated IF connects to
the Upconverter Module which produces a
RF on channel frequency signal at J23 the
Upconverter RF output jack on the rear of
the driver/amplifier chassis assembly. The
gain of the upconverter is adjustable and
dependent on the number of UHF amplifier
cabinets in the system. The output of the
upconverter may be padded by a 6 dB
attenuator for 3 cabinets or a 10dB
attenuator for 1 or 2 cabinets. The RF is
jumper cabled to J24 the IPA input jack on
the driver/amplifier chassis assembly. The
RF input (≈+6 dBm, 4 mW 1 amp cab, or
≈+9 dBm, 8 mW 2 Amp Cab, or ≈+10.8
dBm, 12 mW 3 amp cab) is connected to
the IPA assembly, which amplifies the RF
that is connected to J25 the IPA RF output
jack of the driver/amplifier assembly. The
RF (≈+27 dBm, 0.5 W 1 amp cab, or ≈+30
dBm, 1 W 2 amp cab, or (≈+31.8 dBm, 1.5
Innovator™ HX Series Digital Chapter 2, System Description
UHF Transmitter and Remote Control Connections
Volume 1, Rev. 0 2-2
W 3 amp cab) is cabled to the RF
Amplifier Cabinet or to a 2 way or 3 way
splitter in multi-amplifier configurations.
2.1.1 Pre-Filter Sample (Non-Linear
Distortion)
A forward power sample, pre-filtering, of
the output of the UHF amplifier cabinet or
the combiner is provided from the pre-
filter coupler. The sample connects to
J1, on the A47 relay. The relay is
controlled by the Axciter Modulator
through J7.
The selected output of the relay, either
the Pre or Post filter sample, connects to
the rear of (A3) the driver/amplifier
chassis assembly at the SMA Jack J41
that is connected to the downconverter
module for use in the adaptive
equalization process.
2.1.2 Post-Filter Sample (Linear
Distortion)
A forward power sample, after filtering,
of the output of the transmitter is
provided from the DTV mask filter. The
sample connects to J2, on the A47 relay.
The relay is controlled by the Axciter
Modulator through J7.
The selected output of the relay, either
the Pre or Post filter sample, connects to
the rear of (A3) the driver/amplifier
chassis assembly at the SMA Jack J41
that is connected to the downconverter
module for use in the adaptive
equalization process in the Axciter.
2.2 UHF Amplifier Cabinet Assembly
The PA cabinets are typically made up of
a eight RF amplifier assemblies, using
seven 2 way splitters, an 8 way
combiner, a Top Power Supply Assembly
#1, a Bottom Power Supply Assembly
#2, two Transformers, two SCR
Controllers, a 480 or 208 VAC Power
Distribution Panel that also distributes
the 110 VAC.
The RF input, (+27 dBm, 500 mW), from
the Exciter or the two way or three way
splitter connects to the Amplifier Cabinet at
the (A14) 2 Way Splitter in an eight
amplifier assembly cabinet. Each output of
the 2 Way Splitter is split by another 2
Way Splitter, creating four outputs. Each
of these outputs is split again by another
Two Way Splitter creating eight total
outputs, each (+18 dBm, 63 mW) that
connect to the eight Power Amplifier
Assemblies. Each PA Assembly has
approximately +40.5 dB of gain and
generates a RF output of (+58.5 dBm, 700
W). These eight RF outputs are combined
in an 8 Way Combiner to produce an RF
Output of (+67.2 dBm, 5.2 kW) DTV.
In an amplifier cabinet with six amplifier
assemblies, the input connects to a 2 way
splitter. Each output of the 2 Way Splitter
is split by a 3 Way Splitter, creating six
outputs. Each of these outputs (+18 dBm,
63 mW) connect to the six Power Amplifier
Assemblies. Each PA Assembly has
approximately +40.5 dB of gain and
generates a RF output of (+58.5 dBm, 700
W). These six RF outputs are combined in
a 6 Way Combiner to produce an RF
Output of (+65.7 dBm, 3.7 kW) DTV.
In an amplifier cabinet with three amplifier
assemblies, the input connects to a 3 way
splitter. Each output of the 3 Way Splitter
(+18 dBm, 63 mW) connect to the three
Power Amplifier Assemblies. Each PA
Assembly has approximately +40.5 dB of
gain and generates a RF output of (+58.5
dBm, 700 W). These three RF outputs are
combined in a 3 Way Combiner to produce
an RF Output of (+62.6 dBm, 1.8 kW) DTV.
NOTE: Detailed information and drawings
on the UHF Power Amplifier Cabinet are
contained in Volume 2 of this Manual.
2.3 RF Output Assemblies
The RF outputs from the individual
amplifier cabinets connect, in 5kW and
higher power transmitters, to the (A40) RF
combiner assembly. In Transmitters below
Innovator™ HX Series Digital Chapter 2, System Description
UHF Transmitter and Remote Control Connections
Volume 1, Rev. 0 2-3
5 kW, the output of the amplifier cabinet
connects directly to the (A41) coupler
assembly and then to J1, the RF input
jack on the (A42) DTV mask filter
assembly. In 5kW and higher
transmitters, the combined output of the
(A40) combiner, at a 3-1/8” connector,
is cabled through (A41) a coupler
assembly to J1 the RF input jack on the
(A42) DTV mask filter assembly. In all
power level transmitters, the (A41)
coupler supplies a forward pre-filter
sample that is cabled to the Axciter
relay mounted in the exciter control
cabinet.
The (A42) DTV mask filter supplies
forward and reflected power samples
that are cabled to the Exciter Control
Cabinet. The forward sample connects to
J1 on the (A4) dual peak detector board
and then to the system controller mounted
in the HX exciter/driver assembly where it
is used for monitoring and control
purposes.
The reflected sample from the DTV mask
filter connects to the J2 on the (A4) dual
peak detector board and then to the
system controller mounted in the HX
exciter/driver assembly where it is used for
monitoring and control purposes.
The RF output of the (A42) DTV mask filter
is the UHF on channel RF output of the
transmitter that connects to the antenna
for your system.
Figure 2-1: Driver/Amplifier Front View
Table 2-1: HX Series Trays and Assemblies
ASSEMBLY DESIGNATOR
TRAY/ASSEMBLY NAME PART NUMBER
Exciter Amplifier Chassis
Assembly, HX Series 1305801 (110 VAC) Or
1305555 (220 VAC)
A11 Backplane Board, Axciter 1307307
A1 Downconverter Module, Axciter 1306852
A5 Upconverter Module, Axciter 1306850
A4 Control/Power Supply Module 1301936 (110 VAC) Or
1303229 (220 VAC)
A6 Power Amplifier Driver Module 1306019
A4
A6
A5
A1
Innovator™ HX Series Digital Chapter 2, System Description
UHF Transmitter and Remote Control Connections
Volume 1, Rev. 0 2-4
2.4 Exciter Amplifier Chassis
Assembly, HX Series, {(1305801,
110 VAC) or (1305555, 220 VAC);
Appendix D}
The Digital HX Series exciter driver
assembly is made up of the modules and
assemblies as shown in Figure 2-1 and
listed in Table 2-1.
The chassis assembly provides the
spaces into which the individual modules
slide, using tracks mounted on the top
and bottom of the assembly. The chassis
assembly is factory set for operation
using 110 or 220 VAC as directed by the
customer. In this system the modules
include, (A4) a System Controller/Power
Supply. The System Control Module
plugs directly into a backplane board
mounted at the rear of the chassis
assembly. The backplane board
(1307307) provides module to module
interconnection as well as interconnection
to remote command and control
connectors at TB30 and TB31 on the rear
of the assembly.
NOTE: Information and drawings on the
Axciter, the Upconverter Module and the
Downconverter Module are found in the
separate Axciter Manual.
2.4.1 (A4) Control/Power Supply
Module Assembly (110 VAC,
1301936 or 220 VAC, 1303229;
Appendix D)
The (A4) Control & Monitoring/Power
Supply Assembly is configured at the
factory for operation at 110 VAC or 220
VAC. The assembly made up of a Control
Board (1302021), a Power Protection
Board (1302837), a Switch Board (1527-
1406), and a LCD Display. The Assembly
also contains a switching power supply
that provides ±12 VDC to the rest of the
modules in the chassis and +32 VDC to
the Power Amplifier module.
The Assembly provides all transmitter
control and monitoring functions. The
Front panel LCD display, 20 char x 4
lines, allows monitoring of system
parameters, including forward and
reflected power, transistor currents,
module temperatures and power supply
voltages. The LCD screens are detailed
in Chapter 3.
Table 2-2. Controller/Power Supply Display
DISPLAY FUNCTION
LCD A 4 x 20 display providing a four-line readout of the internal
functions, external inputs, and status. See Chapter 3,
Controller/Power Supply Display Screens, for a listing of displays.
Table 2-3. Controller/Power Supply Status Indicator
LED FUNCTION
OPERATE
(green)
When lit it indicates that the transmitter is in the Operate Mode. If
transmitter is Muted the Operate LED will stay lit, the exciter/driver
will remain in Operate, until the input signal is returned.
FAULT
(red or green)
Red indicates that a problem has occurred in the transmitter. The
transmitter will be Muted or placed in Standby until the problem is
corrected.
DC OK
( red or green ) Green indicates that the switchable fuse protected DC outputs that
connect to the modules in the transmitter are OK.
Innovator™ HX Series Digital Chapter 2, System Description
UHF Transmitter and Remote Control Connections
Volume 1, Rev. 0 2-5
Table 2-4. Controller/Power Supply Control Adjustments
POTENTIOMETERS
DESCRIPTION
DISPLAY CONTRAST Adjusts the contrast of the display for desired viewing of screen.
2.4.2 (A6) Exciter Power Amplifier
Module, UHF (1306019; Appendix D)
The (A6) Power Amplifier Module
Assembly is made up of (A5) an Amplifier
Control Board (1304774), (A4) a Coupler
Board Assembly (1227-1316), (A1) 1
Watt UHF Module Assembly (1302891),
and a RF Module Pallet Assembly, 250
Watts (1300116).
The Power Amplifier Module contains
Broadband LDMOS amplifiers that cover
the section of the UHF band that your
channel is contained. The RF output of
the Axciter Upconverter is passed
through the attenuator, (+6 to +10.8
dBm), and enters the module at J24.
The DTV RF connects to J3 on the (A1) 1
Watt UHF Amplifier Module that contains
a 1 Watt UHF Amplifier Board (1302761).
The module has approximately 17 dB of
gain. The RF output of the module (+27
dBm) at J4 connects to the RF input jack
on (A3) the RF module pallet, Philips
(1300116) that is made from the RF
module pallet w/o transistors (1152336).
The RF module pallet, Philips has
approximately 12 dB of gain. The
amplified RF output (+39 dBm) is cabled
to J1 on (A4) the Coupler Board
Assembly (1227-1316) that supplies a
forward power sample to the (A5)
Amplifier Control Board (1304774).
AGC Voltage, control and monitoring
lines from the Amplifier Control Board
are routed through the floating blind-
mate connector to the Control &
Monitoring/Power Supply module.
Table 2-5. Power Amplifier Status Indicator
LED FUNCTION
ENABLED
(Green)
When lit Green, it indicates that the PA is in the Operate Mode. If a
Mute occurs, the PA will remain Enabled, until the input signal is
returned.
DC OK
(Green) When lit Green, it indicates that the fuse protected DC inputs to the
PA module are OK.
TEMP
(Green) When lit Green, it indicates that the temperature of the heatsink
assembly in the module is below 78°C.
MOD OK
(Green) When lit Green, it indicates that the PA Module is operating and has
no faults.
MOD OK
(Red)
If the Module OK LED is Red and blinking a fault is present.
1 Blink indicates Amplifier Current Fault.
2 Blinks indicate Temperature Fault.
3 Blinks indicate +32V Power Supply Over Voltage Fault.
4 Blinks indicate +32V Power Supply Under Voltage Fault.
5 Blinks indicate Reflected Power Fault.
6 Blinks indicate +12V or –12V Power Supply Fault.
Innovator™ HX Series Digital Chapter 2, System Description
UHF Transmitter and Remote Control Connections
Volume 1, Rev. 0 2-6
Table 2-6. Power Amplifier Control Adjustments
POTENTIOMETERS
DESCRIPTION
AVERAGE CAL Adjusts the gain of the Average Power monitoring circuit
FORWARD CAL Adjusts the gain of the Forward Power monitoring circuit
REFLECTED CAL Adjusts the gain of the Reflected Power monitoring circuit
Table 2-7. Power Amplifier Samples
DISPLAY FUNCTION
FORWARD SAMPLE RF sample of the amplified DTV RF signal being sent out the module
on J25. (˜ - 10 dBm)
NOTE: The sample levels will vary depending on the output power level.
2.5 Control and Status
The control and status readings of the
driver/amplifier chassis assembly are
found by operating the front panel
display screen on the front of the
assembly. Detailed explanation on the
screens information is found in Chapter
3 of this Volume.
2.5.1 Front Panel Display Screens
A 4 x 20 display located on the front of
the Control & Monitoring/Power Supply
Module is used in the HX Series
driver/amplifier for control of the
operation and display of the operating
parameters of the transmitter. The LCD
menu screens are detailed in Chapter 3
of this Volume.
2.6 System Operation
When the transmitter is in operate, as set
by the menu screen on the touch screen,
the following occurs. The +32 VDC stage
of the Power Supply in the Control &
Monitoring Module is enabled, the
operate indicator on the front panel is lit
and the DC OK on the front panel should
also be green. The enable and DC OK
indicators on the PA Module will also be
green.
When the transmitter is in standby, the
+32 VDC stage of the Power Supply in
the Control & Monitoring Module is
disabled, the operate indicator on the
front panel will be extinguished and the
DC OK on the front panel should remain
green. The enable indicator on the PA
Module is also extinguished.
If the transmitter does not switch to
Operate when the operate menu is
switched to Operate, check that all faults
are cleared and that the remote control
terminal block stand-by signal is not
active.
2.6.1 Principles of Operation
Operating Modes
This transmitter is either operating or in
standby mode. The sections below
discuss the characteristics of each of
these modes.
Operate Mode
Operate mode is the normal mode for
the transmitter when it is providing RF
power output.
Entering Operate Mode
Entering the operate mode can be
initiated a few different ways by the
transmitter control board. A list of the
actions that cause the operate mode to
be entered is given below:
• A low on the Remote Transmitter
Operate line.
• User selects "OPR" using switches
and menus of the front panel.
• Receipt of an “Operate CMD” over
the serial interface.
There are several fault or interlock
conditions that may exist in the
transmitter that will prevent the
Innovator™ HX Series Digital Chapter 2, System Description
UHF Transmitter and Remote Control Connections
Volume 1, Rev. 0 2-7
transmitter from entering the operate
mode. These conditions are:
• Power Amplifier heat sink
temperature greater than 78°C.
• Power Amplifier Interlock is high
indicating that the amplifier is not
installed.
Standby Mode
The standby mode in the transmitter
indicates that the output amplifier of the
transmitter is disabled.
Entering Standby Mode
Similar to the operate mode, the
standby mode is entered using various
means. These are:
• A low on the Remote Transmitter
Stand-By line.
• Depressing the “STB” key on
selected front panel menus.
• Receipt of a “Standby CMD” over the
serial interface.
RF System Interlock
A RF System Interlock signal is provided
through TB30-5. When this signal
circuit is completed to ground such as
through a wire between TB30-5 and
TB30-15, the transmitter is allowed to
operate. If this circuit is opened, the
transmitter switches to a Mute condition.
This circuit may be completed through
coax relay contacts and/or reject load
contact closures to assure the RF output
system is available to receive the
transmitter's output RF signal.
2.7 Maintenance
The Innovator HX Series driver/amplifier
is designed with components that require
little or no periodic maintenance except
for the routine cleaning of the fans and
the front panels of the modules.
The amount of time between cleanings
depends on the conditions within the
transmitter room. While the electronics
have been designed to function even if
covered with dust, a heavy buildup of
dust, dirt, or insects will affect the
cooling of the components. This could
lead to a thermal shutdown or the
premature failure of the affected module.
When the front panels of the modules
become dust covered, the module should
be pulled out and any accumulated
foreign material should be removed.
NOTE: To remove the driver/power
amplifier module, mounted in the
driver/amplifier assembly, the input and
output cables must be removed from the
rear of the module and also a 6/32” x ½”
Philips screw, mounted between the two
connectors, needs to be removed before
the module will pull out. After removal of
the screw, which is used to hold the
module in place during shipping, it does
not need to be replaced.
A vacuum cleaner, utilizing a small,
wand-type attachment, is an excellent
way to suction out the dirt. Alcohol and
other cleaning agents should not be used
unless you are certain that the solvents
will not damage components or the silk-
screened markings on the modules and
boards. Water-based cleaners can be
used, but do not saturate the
components. The fans and heatsinks
should be cleaned of all dust or dirt to
permit the free flow of air for cooling
purposes.
It is recommended that the operating
parameters of the driver/amplifier be
recorded from the LEDs on the modules
and the LCD system metering on the
control/monitoring module at least once
a month. It is suggested that this data
be retained in a rugged folder or
envelope.
2.8 Customer Remote Connections
The remote monitoring and operation of
the driver/amplifier is provided through
jacks TB30 and TB31 located on the rear
Innovator™ HX Series Digital Chapter 2, System Description
UHF Transmitter and Remote Control Connections
Volume 1, Rev. 0 2-8
of the chassis assembly. If remote
connections are made to the transmitter,
they must be made through plugs TB30
and TB31 at the positions noted on the
transmitter interconnect drawing and
Table 2-8. TB30 and 31 are 18 position
terminal blocks that are removable from
their sockets to make connections easier.
Just grasp and pull the connector straight
out. After connections are made, replace
the connector and push firmly to seat the
connector in the socket.
Figure 2-2. Driver/Amplifier Chassis Assembly Rear View
Table 2-8: HX Series Chassis Assembly Hard Wired Remote Interface Connections to TB30
or TB31, 18 pos. Terminal Blocks are located on the rear of the Driver/Amplifier Assembly
Signal Name Pin Designations Signal Type/Description
RMT
Transmitter
State TB30-1 Discrete Open Collector Output - A low indicates that
the Transmitter is in the operate mode.
RMT
Transmitter
Interlock TB30-2
Discrete Open Collector Output - A low indicates the
transmitter is OK or completes an interlock daisy
chain. When the transmitter is not faulted, the
interlock circuit is completed.
RMT
Transmitter
Interlock
Isolated Return
TB30-3
Ground - Configurable ground return which can be
either jumpered directly to ground or it can be the
“source” pin of an FET so that the exciter interlock
can be daisy chained with other transmitters. This
signal does not directly interface to the
microcontroller.
RMT Aux I/O 1 TB30-4 Spare to be used for future expansion.
RMT
RF System
Interlock TB30-5
When this signal's circuit is completed to ground
such as through a jumper between TB30-5 and
TB30-15, the transmitter is allowed to operate. If
this circuit is opened, the transmitter switches to a
Mute condition. (See note at end of table)
TB30
TB31
Innovator™ HX Series Digital Chapter 2, System Description
UHF Transmitter and Remote Control Connections
Volume 1, Rev. 0 2-9
Signal Name Pin Designations Signal Type/Description
RMT
Transmitter Set
to Operate CMD TB30-6 Discrete Open Collector Input - A pull down to
ground on this line indicates that the transmitter is
to be placed into the operate mode.
RMT
Transmitter Set
to Stand-By
CMD
TB30-7 Discrete Open Collector Input - A pull down to
ground on this line indicates that the transmitter is
to be placed into the standby mode.
RMT
System Reflect
Power TB30-10
Analog Output (0 to 4.0 V). This is a buffered loop
through of the calibrated “System Reflected Power ”
and indicates the transmitter's reflected output
power. The scale factor is 25% = 3.2V.
RMT System
Forward Power TB30-11
Analog Output (0 to 4.0 V). This is a buffered loop
through of the calibrated “System Forward Power ”.
Indicates the transmitter's Forward power. Scale
factor is 100% = 3.2V.
RMT Spare 1 TB30-13 Spare to be used for future expansion.
RMT Spare 2 TB30-14 Spare to be used for future expansion
*Ground TB30-15 Ground pin (Normally jumpered to TB30-5)
*RTN TB30-17 ±12 VDC returns
*System
+12VDC TB30-16 +12 VDC to the (A4) dual peak detector board.
*System
-12VDC TB30-18 -12 VDC to the (A4) dual peak detector.
Ground TB31-1, 2, 6, 11
12, & 17 Ground pins
*RTN TB31-12 Reflected and forward metering returns.
*System Reflect
Power TB31-13 Reflected Power Sample to the driver/amplifier
obtained from the (A4) dual peak detector
*System
Forward Power TB31-14 Forward Power Sample to the driver/amplifier
obtained from the (A4) dual peak detector
* Indicates that these connections are used in the system and are not available for
remote use.
NOTE: The RMT RF System Interlock, at TB30-5, provides the customer with a means of
connecting the transmitter to protection circuits, for the loads, thermal switches,
combiners, or the antenna, in the output of your system, that will Mute the
transmitter if the protection circuit opens. If the interlock is not used in the
system, a jumper from TB30-5 to TB30-15, which is ground, needs to be
connected to TB30. This jumper provides the RF System Interlock, which allows
the transmitter to go to operate. Without the jumper, the transmitter will remain
Muted.
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-1
Chapter 3
Site Considerations, Installation and Setup Procedures
Table 3-1: HX Series Transmitter AC Input and Current Requirements.
Transmitter Voltage Current
120 VAC
(1 connection) 20 Amps to the Control/Exciter Cabinet
Less than 5 kW
(2 cabinets) 480 or 208 VAC, 3 phase
(2 connections) &
120 VAC (1 connection)
Two 30 Amps 480 VAC or 50 Amps 208
VAC and One 1 Amp 120 VAC to the UHF
Amplifier Cabinet
120 VAC
(1 connection) 20 Amps to the Control/Exciter Cabinet
5 - 10 kW
(3 cabinets) 480 or 208 VAC, 3 phase
(4 connections) &
120 VAC (1 connection)
Two 30 Amps 480 VAC or 50 Amps 208
VAC and One 1 Amp 120 VAC to each of the
two UHF Amplifier Cabinets.
120 VAC
(1 connection) 20 Amps to the Control/Exciter Cabinet
10-15 kW
(4 cabinets) 480 or 208 VAC, 3 phase
(6 connections) &
120 VAC (1 connection)
Two 30 Amps 480 VAC or 50 Amps 208
VAC and One 1 Amp 120 VAC to each of the
three UHF Amplifier Cabinets.
120 VAC
(1 connection) 20 Amps to the Control/Exciter Cabinet
15-20 kW
(5 cabinets) 480 or 208 VAC, 3 phase
(8 connections) &
120 VAC (1 connection)
Two 30 Amps 480 VAC or 50 Amps 208
VAC and One 1 Amp 120 VAC to each of the
four UHF Amplifier Cabinets.
120 VAC
(1 connection) 20 Amps to the Control/Exciter Cabinet
20-25 kW
(6 cabinets) 480 or 208 VAC, 3 phase
(10 connections) &
120 VAC (1 connection)
Two 30 Amps 480 VAC or 50 Amps 208
VAC and One 1 Amp 120 VAC to each of the
five UHF Amplifier Cabinets.
120 VAC
(1 connection) 20 Amps to the Control/Exciter Cabinet
25-30 kW
(7 cabinets) 480 or 208 VAC, 3 phase
(12 connections) &
120 VAC (1 connection)
Two 30 Amps 480 VAC or 50 Amps 208 VAC
and One 1 Amp 120 VAC to each of the six
UHF Amplifier Cabinets.
120 VAC
(1 connection) 20 Amps to the Control/Exciter Cabinet
35-40 kW
(9 cabinets) 480 or 208 VAC, 3 phase
(16 connections) &
120 VAC (1 connection)
Two 30 Amps 480 VAC or 50 Amps 208 VAC
and One 1 Amp 120 VAC to each of the
eight UHF Amplifier Cabinets.
120 VAC
(1 connection) 20 Amps to the Control/Exciter Cabinet
45-50 kW
(11 cabinets) 480 or 208 VAC, 3 phase
(20 connections) &
120 VAC (1 connection)
Two 30 Amps 480 VAC or 50 Amps 208 VAC
and One 1 Amp 120 VAC to each of the ten
UHF Amplifier Cabinets.
3.1 Site Considerations
There are special considerations that need
to be taken into account before the
Innovator HX Series Digital UHF
transmitter can be installed. For
example, if the installation is completed
during cool weather, a heat-related
problem may not surface for many
months, suddenly appearing during the
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-2
heat of summer. This section provides
planning information for the installation
and set up of the transmitter.
The AC input and current requirements
for HX Series transmitters are shown in
Table 3-1. Check that your site has the
needed power requirements.
NOTES: The transmitter is factory set
for operation using one 120 VAC to
the Control/Exciter cabinet and two
480 VAC or 208 VAC, 3 phase and one
120 VAC connections to each UHF
Amplifier Cabinet.
The HX Series Digital Transmitters are
designed and built to provide long life with
a minimum of maintenance. The
environment in which they are placed is
important and certain precautions must be
taken. The three greatest dangers to the
transmitter are heat, dirt, and moisture.
Heat is usually the greatest problem,
followed by dirt, and then moisture. Over-
temperature can cause heat-related
problems such as thermal runaway and
component failure. Each amplifier module
in the transmitter contains a thermal
interlock protection circuit that will shut
down that module until the temperature
drops to an acceptable level.
A suitable environment for the transmitter
can enhance the overall performance and
reliability of the transmitter and maximize
revenues by minimizing downtime. A
properly designed facility will have an
adequate supply of cool, clean air, free of
airborne particulates of any kind, and no
excessive humidity. An ideal environment
will require temperature in the range of
40° F to 70° F throughout the year,
reasonably low humidity, and a dust-free
room. It should be noted that this is rarely
if ever attainable in the real world.
However, the closer the environment is to
this design, the greater the operating
capacity of the transmitter.
There are generally three sources of heat
that must be considered. The first and
most obvious is the heat from the
transmitter itself. The heat generated by
the transmitter and other equipment
must be temperature controlled or
removed from the building. The heat
from the amplifier cabinet is exhausted
from the room by an 1800 CFM Blower
for a single amplifier cabinet or a 3600
CFM Blower for two amplifier cabinets.
The heat that is produced inside the
room by the Control/Driver Cabinet and
from the amplifier cabinet needs to be
taken into consideration when cooling the
room.
An example of calculating the capacity of
the air conditioner needed to cool a site if
all the heat and air produced by the
transmitter is exhausted into the room.
This amount can be determined for a
10 kW transmitter by subtracting the
average power to the antenna
(10 kW) from the AC input power
(55 kW) and taking this number (45 kW)
and then multiplying it by 3.41. This
gives a result of 153,450, which is the
BTUs to be removed every hour. 12,000
BTUs per hour equals one ton.
Therefore, a 13-ton air conditioner will
cool a 10 kW digital transmitter if all the
air is exhausted into the room.
The second source of heat is other
equipment in the same room. If
exhausted into the room, this heat must
also be cooled. The third source of heat
is equally obvious but not as simple to
determine an amount. This is the heat
coming through the walls, roof, and
windows on a hot summer day. Unless
the underside is exposed, the floor is
usually not a problem. Determining this
number is usually best left up to a
qualified HVAC technician. There are far
too many variables to even estimate this
number without reviewing the detailed
drawings of the site that show all of the
construction details. The sum of these
three sources is the bulk of the heat that
must be removed. There may be other
sources of heat, such as personnel, and
all should be taken into account. In a
typical 10 kW digital transmitter site with
the amplifier cabinet exhausted properly,
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-3
the cooling can be accomplished by a 1
ton air conditioner.
The following precautions should be
observed regarding air conditioning
systems:
1. Air conditioners have an ARI nominal
cooling capacity rating. In selecting an
air conditioner, do not assume that
this number can be equated to the
requirements of the site. Make certain
that the contractor uses the actual
conditions that are to be maintained at
the site in determining the size of the
air conditioning unit.
2. Do not have the air conditioner
blowing directly onto the transmitter.
Under certain conditions, condensation
may occur on, or worse in, the
transmitter.
3. Interlocking the transmitter with the
air conditioner is recommended to
keep the transmitter from operating
without the necessary cooling.
While using ventilation alone is not
recommended, the following general
statements apply:
1. The inlet and outlet vents should be on
the same side of the building,
preferably the leeward side. As a
result, the pressure differential created
by wind will be minimized. Only the
outlet vent may be released through
the roof.
2. The inlet and outlet vents should be
screened with 1/8-inch hardware
cloth (preferred) or galvanized
hardware cloth (acceptable).
3. The inlet and outlet should have
automatic dampers that close any time
the blower is off.
4. In those cases in which a transmitter
is regularly off for a portion of each
day, a temperature-differential sensor
that controls a small heater should be
installed. This sensor will monitor
inside and outside temperatures
simultaneously. If the inside
temperature falls to within 5° F of the
outside temperature, the heater will
come on. This will prevent
condensation from forming, when the
blower comes on, and should be used
even in the summer.
5. A controlled air bypass system should
be installed to prevent the
temperature in the room from falling
below 40° F during transmitter
operation.
6. The blower supplied with the
transmitter provides 1800 CFM of air
flow for each amplifier cabinet.
NOTE: Higher elevations require
more air flow to provide the same
amount of cooling. Consult with
Axcera on your blower requirements.
7. Regular maintenance of any filters
can not be overemphasized.
8. It is recommended that a site plan be
submitted to Axcera for comments
before installation begins.
The information presented in this section
is intended to serve only as a general
guide and may need to be modified for
unusually severe conditions.
See Figure 3-1 for a typical transmitter
In and Out air flow configuration.
System interlocking and thermostat
settings should be reviewed with Axcera.
As with any equipment installation, it is
always good practice to consult with the
manufacturer when questions arise.
Axcera can be contacted at (724) 873-
8100.
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-4
Figure 3-1. Typical Transmitter Air Flow Configuration
3.2 Unpacking the Control/Exciter
Cabinet, Amplifier Cabinet(s), the
RF Combiner, if present, and the
DTV Mask Filter
While completing the installation of the
transmitter, refer to the floor plan for
your site for the location of the cabinets,
combiner, if present, and mask filter.
Thoroughly inspect the cabinets, chassis
with modules and all other materials
upon their arrival. Axcera certifies that
upon leaving our facility the equipment
was undamaged and in proper working
order. The shipping containers should be
inspected for obvious damage that
indicates rough handling. Remove the
control/exciter cabinet, w/chassis and
modules in place, the UHF amplifier
cabinet(s), along with the combiner, if
present, and mask filter, from the crates
and boxes. Remove the straps that hold
the control/exciter cabinet to the
shipping skid and slide the cabinet from
the skid. Remove the plastic wrap and
foam protection from around the cabinet.
Do not remove any labeling or tags from
any cables or connectors; these are
identification markers that make
assembly of the transmitter much easier.
Check for dents and scratches or broken
connectors, switches, display, or
connectors. Any claims against in-transit
damage should be directed to the carrier.
Inform Axcera as to the extent of any
damage as soon as possible. Open the
rear door and carefully remove any
packing material. Open the top touch
screen door and bottom front door and
check that the exciter/driver assembly
and the touch screen and computer are
undamaged. Open the tray containing
the keyboard and mouse and check that
they are undamaged. A key in the front
of the computer, when turned clockwise,
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-5
gives access to the CD and floppy disk
drives, mounted behind the flip down
front panel of the computer.
Remove the straps that hold the amplifier
cabinets to the shipping skids and slide
them from the skids. Remove the plastic
wrap and foam protection from around
the cabinets. Do not remove any
labeling or tags from any cables or
connectors; these are identification
markers that make assembly and
identification of the transmitter much
easier. Check for dents and scratches or
broken connectors, switches, display, or
connectors. Any claims against in-transit
damage should be directed to the carrier.
Inform Axcera as to the extent of any
damage as soon as possible. Open the
rear doors to the cabinets and inspect
the interior for packing material and
carefully remove any that is found.
3.3 Installation of the Cabinets
The cabinets should be positioned with
consideration of the air intake and
exhaust ducts that mount to the top of
each amplifier cabinet and access to the
front of the amplifier cabinet for the
installation and removal of the UHF
amplifier assemblies. The opening of the
rear door on the amplifier and
control/exciter cabinets, as well as access
to the exciter modules and UHF amplifier
trays (including sliding them out for
testing) should also be kept in mind.
The control/exciter and amplifier cabinets
should be placed in position according to
the floor plan drawing for your site.
Position the R1 (C1) control/exciter
cabinet to the left and even with the front
of the R2 amplifier cabinet #1, taking
into account the cabinet door alignment.
In transmitters above 5 kW, position the
R3 amplifier cabinet #2 to the right of
amplifier #1 and position the R4 amplifier
cabinet #3 to the right of amplifier #2, if
present. Refer to Figure 3-2 for a 15 kW
typical cabinet location. Predrilled
mounting holes and hardware are
provided in the cabinets for bolting them
together. The hardware is provided in
the installation kit.
Figure 3-2. 15kW Typical Front View
CONTROL/EXCITER
CABINET (C1)
UHF AMPLIFIER
CABINET #1
UHF AMPLIFIER
CABINET #2
R1
R2
R3
R4
UHF AMPLIFIER
CABINET #3
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-6
3.3.1 Exciter/Control Cabinet
The Exciter/Control Cabinet is shipped
with all assemblies installed. The
driver/amplifier modules are mounted to
the chassis assembly with slides that are
on the top and the bottom of the modules.
There are two thumb screws on the front
panel that hold each of the modules in
place.
NOTE: To remove the driver/power
amplifier module, mounted in the
exciter/driver assembly, the RF input and
output cables must be removed from the
rear of the module and also a 6/32” x ½”
Philips screw, mounted between the
connectors, needs to be removed before
the module will pull out. After removal of
the screw, which is used to hold the
module in place during shipping, it does
not need to be replaced.
3.3.2 Placement and Assembling of
the UHF Amplifier Cabinets
When the UHF amplifier cabinets were
packed at the factory, the individual UHF
amplifier trays are removed from the
cabinet and placed in boxes for shipment.
The UHF amplifier trays must be replaced
in the UHF amplifier cabinets. The
individual trays are labeled as to their
cabinet location.
They will be labeled with the rack
number, R2 (UHF Amplifier #1) or in
higher than 5 kW, R3 (UHF Amplifier #2)
and the amplifier position number, 1 thru
8. An example of amp tray labeling is, 2-
1. The amp tray labeled 2-1 will be
placed in Rack #2 (UHF Amplifier Cabinet
#1), amp position #1, the top left amp
position. Refer to Figure 3-3 for a typical
UHF Amplifier Cabinet racking plan.
Slide each of the UHF amplifier trays into
the proper location(s) in the cabinet and
seat firmly in place.
Figure 3-3: Typical 8 Amplifier UHF
Amplifier Cabinet Front View
3.3.3 Blower Control Connection
to TB1
Connect two 22AWG wires from the 3
position terminal block TB1 located in the
rear of each Amplifier Cabinet, the top,
right side to the fan control box on the
blower assembly. TB1-1 is +12 VDC and
TB1-3 is Blower Control. See Figure 3-4.
Figure 3-4: TB1 Fan Control Connections
3.4 AC Input
Once the cabinets and all air intake and
exhaust ducts are in place, the main AC
can be connected to the transmitter. A
registered electrician should be used in
connection of the electricity to the
cabinets.
TB1
AMP #1
AMP #2
AMP #3
AMP #4
AMP #5
AMP #6
AMP #7
AMP #8
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-7
The AC input and current requirements
for HX Series transmitters are as given in
Table 3-1 located on page 1 of this
chapter.
The AC Inputs to the cabinets of the
transmitter connect to the terminal blocks
located toward the rear, right side near
the top of the control/exciter cabinet and
located toward the rear, left side near the
top of each amplifier cabinet.
3.4.1 Main AC Connection to the
Control/Exciter Cabinet
In the Control/Exciter Cabinet, connect
the 120 VAC to the TB1 terminal block,
the AC Input Line 1 to terminal 1 on the
terminal block, the AC Input Line 2 to
terminal 2 on the terminal block and AC
Input Ground to terminal 5 on the
terminal block. (Refer to Figure 3-5)
Figure 3-5: AC Input Connections to
Control/Exciter Cabinet
3.4.2 Main AC Connections to each of
the Amplifier Cabinets
Two 480 VAC or 208 VAC, 3 Phase inputs
are required to each UHF Amplifier
Cabinet. NOTE: In a 2.5 kW UHF
amplifier cabinet just one 480 VAC or 208
VAC input is needed to the amplifier
cabinet. Also one 120 VAC line input is
needed for each UHF amplifier cabinet. In
each UHF Amplifier Cabinet, connect one
of the 480 VAC or 208 VAC inputs to the
A1-A1 terminal block #1, the AC Input
Line 1 to Line 1 on the terminal block, the
AC Input Line 2 to Line 2, Line 3 to Line 3
and the AC Input Ground to Ground on
the terminal block. Connect the other 480
VAC or 208 VAC input to the A2 terminal
block #2, the AC Input Line 1 to Line 1 on
the terminal block, the AC Input Line 2 to
Line 2, Line 3 to Line 3 and the AC Input
Ground to Ground on the terminal block.
NOTE: In 480 VAC or 208 VAC Delta
configurations, connect the HIGH Leg, to
Line 1 on the A1-A1 & A2 terminal
blocks.
Connect the 120 VAC to the A1-A2
terminal block #3, Black to Line 2 on the
terminal block, white of the AC Input to
Line 3 on the terminal block and Green
AC Input Ground to Ground, Neutral, on
the terminal block. (Refer to Figure 3-6)
Figure 3-6: AC Input Connections to
Amplifier Cabinets
This completes the unpacking and
installation of the HX Series UHF
television transmitter. Refer to the setup
and operation procedures that follow
before applying power to the transmitter.
3.5 Setup and Operation
Initially, the transmitter should be turned
on with the RF output at the DTV Mask
Filter terminated into a dummy load of at
least the power rating of the transmitter.
If a load is not available, check that the
output of the DTV Mask Filter is
connected to the antenna for your
system.
3.5.1 Input Connections
The input connections to the transmitter
are to the rear of the Control/Exciter
Cabinet. The SMPTE 310 Input connects
to J27 on the rear of the Axciter
modulator tray.
The 10 MHz input from the external GPS,
if used, connects to J9 on the Axciter
Modulator tray. This 10 MHz turns off
the internally generated 10 MHz. The 10
A1
-
A2
A2
TB1
A1-A1
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-8
MHz from J12 on the Axciter connects to
the 10 MHz input jack J10 on the rear of
the Driver/Amplifier assembly.
Refer to the table and description that
follows for detailed information on the
input connections to the driver/amplifier
assembly.
Figure 3-7: Rear View of HX Series Digital Driver/Amplifier
Table 3-2: Rear Chassis Connections for the HX Series Digital Transmitter w/Axciter
Port Type Function Impedance
J1 IEC AC Input N/A
TB02 Term NOT USED Base Band Audio Input 600O
J3 BNC NOT USED Composite Audio Input 75O
J4 BNC NOT USED SAP/PRO Audio Input 50O
J5 BNC NOT USED CW IF Input 50O
J6 BNC NOT USED Modulated IF Input (From Axciter) 50O
J7 BNC NOT USED Video Input (Isolated) 75O
J8 BNC NOT USED Visual IF Loop-Thru Output 50O
J9 BNC NOT USED Modulator Aural IF Output 50O
J10 BNC External 10 MHz Reference Input (From Axciter) 50O
J11 BNC NOT USED System 10 MHz Reference Output 50O
J12 BNC NOT USED MPEG Input to DM8 50O
J13 BNC Downconverter IF Output (To Axciter) 50O
J14 BNC NOT USED RF Spare 2 50O
J15 BNC Digital IF Input (From Axciter) 50O
J17 BNC NOT USED Video Loop-Thru (Isolated) 75O
J18 BNC NOT USED Visual IF Loop-Thru Input 50O
J19 BNC NOT USED Aural IF Loop-Thru Input 50O
J23 BNC Upconverter RF Output (Jumpered to J24) 50O
J24 SMA Power Amplifier RF Input (Jumpered to J23) 50O
J25 SMA Power Amplifier RF Output 50O
J35 BNC NOT USED Power Amplifier Aural RF Input 50O
J36 N NOT USED Power Amplifier Aural RF Output 50O
J32 RJ-45 SCADA (Input/Loop-Thru) CAT5
J33 RJ-45 SCADA (Input/Loop-Thru) CAT5
J1
J24
TB30
TB31
J32
J34
J33
J11
J10
J23
J6
J5
J19
J40 J41
TB02
J13
J4
J7
J17
J8
J9
J12
J3
J25
J15
J18
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-9
Port Type Function Impedance
J34 RJ-45 System RS-485 Serial CAT5
J40 BNC 1 GHz Input (From Axciter) 50O
J41 SMA Downconverter RF Input (From Relay) 50O
TB30
Termination
Remote Control & Monitoring N/A
TB31
Termination
Remote Control & Monitoring N/A
NOTE: Bolded Items are used in this configuration.
3.6 Initial Turn On
Once the transmitter has been installed
and all connections have been made, the
process of turning on the equipment can
begin. First verify that AC power is
present and connected to the
transmitter. Verify all cables are properly
connected and are the correct type.
Once these checks are completed, the
unit is ready to be turned on following
the procedures below.
Turn on the main AC power source that
supplies the AC to the transmitter.
Switch On CB1 the 15 Amp circuit
breaker located at the bottom of the
control cabinet. If the Driver/Amplifier
Chassis Assembly does not turn On,
check that the AC breaker located on the
rear of the Driver/Amplifier Chassis
Assembly located under the AC input
plug is On. Switch On CB1 and CB2 the
two 30 Amp circuit breakers located at
the bottom of each amplifier cabinet.
Caution AC is now applied to the
entire transmitter.
3.6.1 Driver/Amplifier Front Panel
LED Indicators
Monitor the LCD display located on the
front of the control/monitoring module
as you proceed through this section.
When the transmitter is in the operate
mode, the STB menu appears. When in
the standby mode, the OPR menu
appears. Press the NXT key after each
menu to continue through the sequence.
3.6.1.1 Upconverter Module LEDs on
Front Panel
Status Indicators:
PLL: This illuminates Green when the
phase lock loop circuit is closed, Red if
unlocked.
STATUS: This illuminates Green if no
faults, Red when a fault has occurred in
the upconverter.
AGC: This illuminates Green when in
Auto, Amber when in Manual.
3.6.1.2 Controller Module LEDs on
Front Panel
Status Indicators:
OPERATE: This illuminates Green when
transmitter is in operate.
FAULT: This illuminates Red when a
fault has occurred in the transmitter.
DC OK: This illuminates Green when the
DC outputs that connect to the modules
in the driver/amplifier assembly are
present.
3.6.1.3 Power Amplifier Module LEDs
on Front Panel
Status Indicators:
ENABLED: This illuminates Green when
the PA is in operate.
DC OK: This illuminates Green when the
DC inputs to the PA module are present.
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-10
TEMP: This illuminates Green when the
temperature of the heatsink in the PA is
below 78°C.
MOD OK: This illuminates Green when
the PA module is operating and has no
faults, Red if there is a fault.
If the Module OK LED is Red and blinking
a fault is present. The meaning of the
blinking LED is as follows.
1 Blink: Indicates Amplifier Current
Fault.
2 Blinks: Indicate Temperature Fault.
3 Blinks: Indicate +32V Power Supply
Over Voltage Fault.
4 Blinks: Indicate +32V Power Supply
Under Voltage Fault.
5 Blinks: Indicate Reflected Power Fault.
6 Blinks: Indicate +12V or –12V Power
Supply Fault
3.6.2 Front Panel Screens for the
Transmitter using the Driver/
Amplifier Chassis Display
A 4 x 20 display located on the front of
the Control & Monitoring/Power Supply
Module is used in the HX Series
transmitter for control of the operation
and display of the operating parameters
of the transmitter. Below are the display
screens for the system. The ↑ and ↓
characters are special characters used to
navigate up or down through the menu
screens. Display text flashes on discrete
fault conditions for all screens that
display a fault condition. When the
transmitter is in the operate mode, the
STB menu appears. When the
transmitter is in the standby mode, the
OPR menu appears.
Display Menu Screens for the HX Series Driver/Amplifier
Table 3-3: Menu 01 - Splash Screen #1
This is the first of the two transmitter splash screens that is shown for the first few
seconds after reset or after pushing the SPL button on the Main Screen. Will
automatically switch to the second splash screen.
Table 3-4: Menu 02- Splash Screen #2
This is the second of the two transmitter splash screens. Will automatically switch to the
Main Screen. The Model Number, Code Version Number and Firmware Number for your
system are displayed on this screen. Make note of these two numbers when conferring
with Axcera on software problems.
Table 3-5: Menu 10 - Main Screen:
This is the default main screen of the transmitter. When the transmitter is in
Standby, the 'OPR' characters appear in the lower right. By pushing the right most
button located under to display the operator will place the Transmitter in Operate. When
the transmitter is in Operate the 'SBY' characters are displayed and the “OFF” is replaced
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-11
with 'ON' and the forward power values are displayed. An operator can change the
transmitter from STANDBY to OPERATE by pressing the right most button on the front
panel display. Pushing the SPL button will display the two splash screens.
If the ↓ key is activated the display changes to Menu 11, the System Error List Access
Screen. If the ↑ key is activated the display changes to Menu 13, the Transmitter
Configurations Access Screen.
Table 3-6: Menu 11 - Error List Access Screen
This screen of the transmitter shows the current number of errors, displayed in upper,
right of screen (0), and provides operator access to view Menu 20, the error list screens,
by pushing the ENT button. When ENT is pushed, Menu 20, the Error List Display Screen
is displayed. If the ↓ key is pushed the display changes to Menu 12, Table 3-7, the
Transmitter Device Data Access Screen. If the ↑ key is activated the display returns to
Menu 10, the Main Screen.
Table 3-7: Menu 12 - Transmitter Device Data Access Screen
This screen of the transmitter allows access to various parameters of the transmitter
system. This is the entry point to Menu 30, the System Details Screens, by pausing the
ENT button. When the ENT button is pushed, Menu 30 is accessed. Go to Menu 30, Table
3-12 for set up details. Before pushing the ENT button: if the ↓ key is activated the
display changes to Menu 13, Transmitter Configurations Access Screen. If the ↑ key is
activated the display returns to Menu 11, the Error List Access Screen.
Table 3-8: Menu 13 - Transmitter Configuration Access Screen
This screen of the transmitter allows access to various software settings of the
transmitter system. If ENT is pushed, go to Menu 40, Table 3-13, the access to
transmitter configuration and set up. Before pushing the ENT button: if the ↓ key is
activated the display returns to Menu 10, Main Screen. If the ↑ key is activated the
display returns to Menu 12, the Transmitter Device Data Access Screen.
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-12
Table 3-9: Menu 20 - Error List Display Screen
This screen of the transmitter allows access to the system faults screens. Fault logging is
stored in non-volatile memory. The transmitter's operating state can not be changed in
this screen. The 'CLR' switch is used to clear previously detected faults that are no
longer active. The ↑ key and ↓ key allow an operator to scroll through the list of errors
that have occurred. The ESC button is used to leave this screen and return to Menu 11,
Table 3-6, the Error List Access Screen. NOTE: Shown is example of a typical screen.
Menu 30 is entered by selecting ENT at Menu 12, Table 3-7.
Table 3-10: Menu 30 - Transmitter Device Details Screen
This screen allows access to the transmitter parameters of installed devices. The system
is configured to know which devices are present. Current values for all installed devices
are shown. If a module is not installed, only a "MODULE NOT PRESENT" message will be
displayed. The first screen displayed is Menu 30-1, Table 3-11, the System Details
Screen.
Table 3-11: Menu 30-1 – System Details Screen
The ↓ and ↑ arrows allow you to scroll through the different parameters of each device as
shown in Table 3-12. Each System Component is a different screen. The proper
modules will be programmed for your system. The External Amplifier Modules are
displayed in each amplifier cabinet. Examples of External Amplifier Modules displays are:
(AMPLIFIER CABINET 1 MODULE 1) and (AMPLIFIER CABINET 2 MODULE 4).
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-13
Table 3-12: Transmitter Device Parameters Detail Screens
System
Component Parameter Normal Faulted
(Blinking)
D/C PIN ATTEN VOLTAGE ˜.6V N/A
OVERDRIVE FAULT ˜1.6V N/A
AGC MODE AUTOMATIC N/A
ADAPTIVE EQUALIZATION
STATUS RUNNING N/A
MEASURED SIGNAL TO NOISE ˜32.6dB N/A
PLL STATUS LOCKED N/A
SMTE310 INPUT STATUS OK N/A
DEMOD FUNCTION STATUS OK N/A
FX VERSION ˜1.013 N/A
Axciter Details
NB VERSION ˜0.029 N/A
D/C PIN ATTEN VOLTAGE N/A
U/C PIN ATTEN VOLTAGE ˜1.6V N/A
AFC 1 LEVEL ˜0.06V N/A
INPUT STATUS ON N/A
OUTPUT STATUS ON N/A
AGC 1 LEVEL ˜0.32V N/A
AGC 2 LEVEL ˜0.00V N/A
PLL XXXMHz N/A
PLL STATUS ˜OK FAULT
OVERDRIVE LEVEL STATUS OK FAULT
CODE VERSION 1.6g or higher N/A
Upconverter
Details
EPLD 1.4 or higher N/A
System Control
Details SUPPLY ENABLED FOR xxx HOURS N/A
POWER SUPPLY STATE, 28V 28 VDC N/A
±12V SUPPLY Enabled or Disabled FAULT
FORWARD POWER xxx% N/A
REFL POWER xxx% N/A
AMP 1 CURRENT xx.xA N/A
AMP 2 CURRENT xx.xA N/A
TEMPERATURE xxC N/A
CODE VERSION x.x N/A
Driver PA Details
PA HAS OPERATED FOR x.x HRS N/A
POWER SUPPLY 1 OFF and OK ON and OK FAULT
POWER SUPPLY 2 OFF and OK ON and OK FAULT
FORWARD POWER xxx% N/A
REFLECTED POWER xxx% N/A
AVG POWER xxx% N/A
AGC LEVEL 0 - 5.00 V N/A
IN - INLET AIR TEMP xxC N/A
OUT - EXHAUST AIR TEMP xxC N/A
RL1-4 FLT xxC N/A
RL5-8 FLT xxC N/A
COOLING BLOWER ON or OFF N/A
Amplifier Cabinet
1 Details
CODE VERSION x.x N/A
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-14
System
Component Parameter Normal Faulted
(Blinking)
RF OUTPUT Enabled or Disabled N/A
POWER SUPPLY x.xV N/A
DRIVER FORWARD POWER xxx% N/A
FINAL FORWARD POWER xxx% N/A
FINAL REFLECTED POWER xxx% N/A
CURRENT 1 xx.xA N/A
CURRENT 2 xx.xA N/A
CURRENT 3 xx.xA N/A
CURRENT 4 xx.xA N/A
CURRENT 5 xx.xA N/A
CURRENT 6 xx.xA N/A
CURRENT 7 xx.xA N/A
FLANGE TEMP xxC N/A
HEATSINK TEMP xxC N/A
Amplifier Cabinet
1 Module 1
Details
CODE VERSION x.x N/A
NOTE: Pushing the ↓ Down Arrow will show on screen the parameters for the rest of the
modules in Cabinet 1, and then the other cabinets in the system, if present.
Pushing the ↓ Down Arrow, after scrolling through all of the detail screens, will put you
back to Menu 30, Table 3-10. Push the ESC button to exit the Transmitter Device
Parameter Screens to Menu 12, Table 3-7, the Transmitter Device Parameter Access
Screen.
Menu 40 (Table 3-13) is entered by selecting ENT at Menu 13.
Table 3-13: Menu 40 - Authorized Personnel Screen
This screen of the transmitter notifies an operator that they are only to proceed if they
are authorized to make changes to the transmitter's operation. Changes made within the
following set-up screens can affect the transmitters output power level, output frequency,
and the general behavior of the transmitter. Please do not make changes within the
transmitter's set-up screens unless you are familiar with the operation of the transmitter.
This screen is implemented in transmitter software version 1.4 and above.
Pressing ENT will put you into the Transmitter Set Up Screens for Menu 40.
A safeguard is added to the Set Up Menus in software version 2.5 and above. If a change
is made to a screen within the Set Up Menus, when you go to the next menu, a new
screen asks if you accept the change or want to return to the previous menu to
reconsider the changes made.
To accept the changes, the two buttons located under ACCEPT must be pushed
simultaneously.
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-15
To return to the previous Menu to make corrections, the two buttons located under the
RETURN must be pushed simultaneously.
Upon returning to the previous Menu the correct input must be entered and the above
procedure repeated, this time accepting the changes
Accept or Return to previous Menu Screen
Pushing these two buttons Pushing these two buttons
Simultaneously will accept Simultaneously will return you
the change. to the previous Menu.
Typical Set Up Screens are shown in Table 3-14 Menu 40-1 through Table 3-24 Menu 40-
19 that follow.
Table 3-14: Menu 40-1 - Transmitter Set-up: Power Control Screen
This screen of the transmitter is the first of several that allows access to transmitter set-
up parameters. When + is selected, the Power will increase. When - is selected, the
Power will decrease.
Table 3-15: Menu 40-3 - Transmitter Set-up: Model Select Screen
This screen is used to specify which components are expected to be part of the system.
By specifying the model number, the transmitter control firmware knows which
components should be installed and it will be able to display faults for components that
are not properly responding to system commands.
Table 3-16: Menu 40-4 - Transmitter Set-up: Upconverter Channel Select Screen
The choices of this screen are to the standard UHF / VHF channels. The + and – buttons
change the desired channel of the transmitter. The PLL frequency is set for custom
Offsets within the upconverter frequency. Any change to the channel is immediately set
to the Upconverter Frequency Synthesizer PLL circuit.
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-16
Table 3-17: Menu 40-5 - Transmitter Set-up: Serial Address Screen
This screen allows the user to set the serial address of the transmitter. The default
address is 5. This value and all other set-up parameters are stored in non-volatile
memory.
Table 3-18: Menu 40-6 - Transmitter Set-up: System Forward Power Calibration
This screen is used to adjust the calibration of the system's forward power. A symbol
placed under the '6' character is used to show major changes in the calibration value.
When the calibration value is at full value, the character will be full black. As the value
decreases, the character pixels are gradually turned off. The calibration value is a value
between 0 and 255 but the calibration value symbol only has 40 pixels. Therefore small
changes in actual calibration value may not affect the symbol's appearance.
Table 3-19: Menu 40-9 - Transmitter Set-up: System Reflected Power Calibration
This screen is used to adjust the calibration of the system's reflected power. Again a
calibration value symbol is used for this screen as on the previous screens.
Table 3-20: Menu 40-13 - Transmitter Set-up: Minimum Forward Power Fault
Threshold Screen
This screen is used to set the minimum forward power fault threshold. When the
transmitter is operating, it must operate above this value otherwise the system will shut
down with fault for 5 minutes. If after five minutes the fault is not fixed, the transmitter
will enable, measure the power and if less than this value it will again shut down for five
minutes.
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-17
Table 3-21: Menu 40-14 - Transmitter Set-up: Maximum Reflected Power Fault
Threshold
This screen is used to set the maximum reflected power fault threshold. When the
transmitter is operating, it must not operate above this value otherwise the system will
slowly begin to reduce the forward output power. If the system's reflected output power
exceeds the maximum reflected power threshold by five percent or more, the transmitter
will shut down with fault for 5 minutes. If after five minutes the fault is not fixed, the
transmitter will enable, measure power and if above this value plus five percent it will
again shut down for five minutes. If the system's reflected output power exceeds the
maximum reflected power threshold due to some condition like the formation of ice on an
antenna, the transmitter reduces visual forward power to a level where the reflected
power is less than this threshold. The transmitter will automatically increase its output
power to normal operation when the cause of higher than normal reflected power is
corrected.
Table 3-22: Menu 40-18 - Transmitter Set-up: Inner Loop Gain Control
This screen is used to set up the Inner Loop Gain of the driver/amplifier assembly. This
feature is implemented in transmitter software version 2.0 and above
Table 3-23: Menu 40-19 - Transmitter Set-up: Amplifier Module Control
This screen is used to monitor the external amplifier modules in the amplifier cabinets.
Table 3-24: Menu 40-19 - Transmitter Set-up: Remote Commands Control
This screen is used to allow or deny the use of remote control commands. When
disabled, remote commands are not used. Remote commands are commands received
either through the rear terminal blocks or through serial messages.
Push the ESC button to exit the Transmitter Set Up Screens to Menu 13, Table 3-8, the
Transmitter Configuration Access Screen.
This completes the description of the menu screens for the HX Series driver/amplifier
chassis assembly.
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-18
3.6.3 Front Panel Touch Screens for
the UHF Transmitter
The touch screen at the top of the
Control/Exciter Cabinet gives the operator
access the same information and control
of the transmitter as just described in the
proceeding section by the screens on the
Controller/Power Supply module in the
Driver/Amplifier Chassis Assembly.
Examples of the typical screens are
shown on the following pages. Your
screens may differ form these examples.
By using the curser and the mouse or by
touching the screen, first, the selected
control or the amplifier cabinet screen will
be highlighted. Then, by selecting a tray
or module, that tray or module will
highlight and the operating parameters
for that tray or module will be displayed.
Figure 3-8 Control/Exciter Cabinet System Controller Screen
Shown above is the control screen for the Control/Exciter Cabinet of the HX Series
Transmitter. The cabinet is selected in the upper left quadrant. In the above display
the Exciter/Control cabinet is selected, it is highlighted. The lower left quadrant
displays the selected module and displays the parameters for that module. In the above
display the System Control Module is selected, it is highlighted, and the operating
parameters for the System Control Module are displayed on the right. The upper right
quadrant contains the Transmitter System Control, which, by touching the Operate or
Standby button, places the transmitter in that mode. The Transmitter System
parameters, % Visual Forward Power, % Aural Forward Power and % Reflected Power are
also displayed in the upper right quadrant.
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-19
Figure 3-9 Amplifier Cabinet and Transmitter Configuration Screen
Shown in the above figure is the control screen for the Amplifier Cabinet of the HX Series
Transmitter. The cabinet is selected in the upper left quadrant. In the above display,
the Amplifier Cabinet is selected. The lower left quadrant displays the selected module
and displays the parameters for that module. In the above display, the Cabinet Controller
#1 is selected and the operating parameters for the cabinet is displayed on the right. The
upper right quadrant contains the Transmitter System Controls, which places the
transmitter in Operate or Standby. The Transmitter System parameters are also
displayed in the upper right quadrant.
The above screen is also the Transmitter Configuration Screen in the Lower Right
Quadrant that displays the Transmitter Model number, which will be highlighted, in this
case HU0010KAI. This screen shows a local host server IP address of 155.226.168.201.
If the Remote Data Client is selected, by removing the check in the Local Host Server
box, the application attempts to connect to an On-Site Data Server at the indicated IP
address. When a remote client is serviced, the server application indicates the client's
address at the specific port that is being used.
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-20
Figure 3-10 Amplifier Cabinet Screen w/System Error List
The above screen is the Amplifier Cabinet control screen. The desired amplifier cabinet is
selected in the upper left quadrant, it will highlight. In the above display, Amplifier
Cabinet #1 is selected. The lower left quadrant displays the selected module and
displays the parameters for that module. In the above display, Amplifier Module #1 is
selected and the operating parameters for that module is displayed on the right. The
upper right quadrant contains the Transmitter System Control, which places the
transmitter in Operate or Standby. The Transmitter System parameters are also
displayed in upper right quadrant. The Lower Right Quadrant displays the Transmitter
System Error List. If an error occurs, it will be listed in this area.
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-21
Figure 3-11 Control Cabinet Screen w/System Error List
In the above screen, the four quadrants are as described in the previous figures. On this
screen, in the Lower Right Quadrant, is displayed the Transmitter System Error List.
Listed are three separate errors with the dates and times the errors occurred. Also
displayed is the status of the error either Active, still occurring, or Cleared, an error
occurred but has reset itself. The two cleared faults, Modulator PLL Not Locked, indicate
that the phase lock loop circuit maintaining the lock between the 4.5 MHz and the 45.75
MHz was not closed.
The Active fault, IF Processor Not Installed, which indicates the IF Processor is not
making contact or missing. With an active fault, a visual Red indication of the fault will
be displayed in the Upper Left and Lower left Quadrants. In the above screen, upper left
quadrant, the control cabinet is selected and the Driver is Red, indicating a fault within
the Driver Assembly. The lower left quadrant indicates the Cabinet Summary Status. In
this case, the Driver #1 is Red, indicating a fault in Driver #1. Within the Driver
Assembly, the IF Processor Module is Red, indicating the fault is within the IF Processor.
By highlighting the fault in the Transmitter System Error List, that fault can be deleted
by touching the Delete Selected button, if that fault is cleared. All of the cleared faults
displayed may be deleted by touching the Delete All button.
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-22
Figure 3-12 Serial Port Configuration Screen
The above screen is the Serial Port Configuration Screen. This screen shows a local host
at the TCP/IP Address 155.226.168.201 and no remote clients connected at ports 6111
thru 6114. This screen displays, in the upper left quadrant, the cabinets and which
cabinet is selected, in this case the Control Cabinet. In the lower left quadrant, the
selected cabinet parameters are displayed on the left between the module
representations. Also in the lower left quadrant, on the right is displayed the parameters
of the module selected, which is highlighted on the left, in this case the System Controller.
The upper right quadrant contains the Transmitter System Control, which places the
transmitter in Operate or Standby. The Transmitter System parameters are also
displayed in upper right quadrant. The lower right quadrant is used to configure and
monitor the site serial port status. The settings shown above are typical of a system.
An operator can visually determine if data messages are being sent and if the device is
responding. If a specific port has debugging enabled, the box is selected. When the
GUI application is operating at the transmitter site, the Local Host Server Box must be
selected. As an on-site data server, the serial ports are automatically enabled, and the
system provides data for up to four remote applications. If the Local Host Server Box is
not selected, the application attempts to connect to an On-Site Data Server at the
indicated IP address. When a remote client is serviced, the server application indicates
the client's address at the specific port that is being used.
Innovator™ HX Series Digital Chapter 3, Site Considerations,
UHF Transmitter Installation and Setup Procedures
Volume 1, Rev. 0 3-23
3.6.4 Operation Procedure
If necessary, connect to the transmitter
to the antenna. Check that the RF
output is 100% and if needed adjust
the ALC Gain of the Axciter to attain
100% RF Output. The power
raise/lower settings, in the menus, are
only to be used for temporary
reductions or increases in power.
The power set-back values do not
directly correspond to the output power
of the transmitter.
This completes the Installation, Set Up
and Turn On of the Transmitter.
If a problem occurred during the setup
and operation procedures, refer to
Chapter 5, Detailed Alignment
Procedures, of this manual for more
information.
Innovator™ HX Series Digital Chapter 4, Circuit Descriptions,
UHF Transmitter Control/Exciter Cabinet Assembly
Volume 1, Rev. 0 4-1
Chapter 4
Circuit Descriptions
4.1 (R1) Control/Exciter Cabinet
Assembly (1306879; Appendix C)
The Exciter/Driver System Control
Cabinet contains a computer with a
touch screen, keyboard and mouse and
a UPS power supply. There are also an
HX Series Driver/Amplifier Assembly and
an Axciter Modulator system
NOTE: Information on the Axciter
Modulator Tray, the Upconverter and
Downconverter modules can be found in
the separate Axciter Instruction Manual
provided.
4.1.1 (A4) Dual Peak Detector Board
(1159965; Appendix C)
The function of the dual peak detector
board is to detect forward and reflected
output power samples and generate
output voltages that are proportional to
the power levels of the sampled signals
for use by the control monitoring
assembly in the exciter.
There are two identical signal paths on
the board: one for forward power and
one for reflected power. A sample of
forward output power, from the external
DTV mask filter, enters the board at the
SMA jack J1. Resistors R1 and R2 form
an input impedance-matching network of
50Ω. The forward power signal is
detected by CR1, R7, R25, C1, and C7.
For digital operation the jumpers, W1 on
J6 and W3 on J8, are both between pins
1 & 2. The detected output is buffered
by the operational amplifier U1C before it
is split. One part is connected to the
forward uncalibrated power output jack
J4. The other split output is connected to
forward power adjust pot R9, which
adjusts the gain of U1D. The output of
U1D is split with one part connected to J3-
4 Forward Power Metering Output #1. The
other output of U1D is connected to J3-6
Forward Power Metering Output #2.
A sample of reflected output power, from
the external DTV mask filter, enters the
board at the SMA jack J2. Resistors R3 and
R4 form an input impedance-matching
network of 50Ω. The reflected power
signal is detected by CR2, R26, R8, C3,
and C8. For digital operation the jumper
W2 on J7 is between pins 1 & 2. The
detected output is buffered by the
operational amplifier U1B before it is split.
One part is connected to the reflected
uncalibrated power output jack J5. The
other split output is connected to reflected
power adjust pot R10, which adjusts the
gain of U1A. The output of U1A is split
with one part connected to J3-9 Reflected
Power Metering Output #3. The other
output of U1A is connected to J3-11
Reflected Power Metering Output #4.
The +12 VDC needed for the operation of
U1 on the board enters the board at J3-2
and is connected through a filter and
isolation circuit consisting of C5, C9 and L3
before it is connected to U1. The -12 VDC
needed for the operation of U1 on the
board enters the board at J3-8 and is
connected through a filter and isolation
circuit consisting of C6, C12 and L6 before
it is connected to U1.
4.1.2 (A46) Serial Loop-Thru Board
(1307811; Appendix C)
The function of the serial loop-thru board is
to provide an extra serial loop thru that
can connect to the driver/amplifier
assembly or the Axciter modulator.
Innovator™ HX Series Digital Chapter 4, Circuit Descriptions,
UHF Transmitter Control/Exciter Cabinet Assemblies
Volume 1, Rev. 0 4-2
4.2 (A3) Driver/Amplifier Chassis
Assembly (1305801, 110 VAC or
1305555, 220 VAC; Appendix D)
This assembly is mounted in Rack 1 the
Control/Exciter Cabinet. The assembly
contains, as mounted in the assembly
from left to right, (A1) the
Downconverter Module, (A5) the
Upconverter Module, (A4) the System
Controller/Power Supply Module, and
(A6) the Power Amplifier/Driver Module.
NOTE: Information on the Axciter
Upconverter module and Downconverter
module can be found in the separate
Axciter Instruction Manual provided.
4.2.1 (A4) Control Monitoring/Power
Supply Module (1301936, 110 VAC,
1303229, 220 VAC; Appendix D)
The Control Monitoring/Power Supply
Module Assembly contains (A1) a Power
Protection Board (1302837), (A2) a 600
Watt Switching Power Supply, (A3) a
Control Board (1302021), (A4) a Switch
Board (1527-1406) and (A5) a LCD
Display.
AC Input to Innovator HX Driver/Amplifier
Chassis Assembly
The AC input to the Driver/Amplifier
Chassis Assembly is connected from J1,
part of a fused entry module, located on
the rear of the chassis assembly to J50
on the Control Monitoring/Power Supply
Module. There are two possible modules
that can be part of your system, 1301936
for 110 VAC or 1303229 for 220 VAC
operation. J50-10 is line #1 input, J50-8
is earth ground and J50-9 is line #2
input. The input AC connects to J1 on
the Power Protection Board where it is
fuse protected and connected back to
J50, at J50-11 AC Line #1 and J50-12 AC
Line #2, for distribution to the cooling
Fan.
4.2.1.1 (A1) Power Protection Board
(1302837; Appendix D)
The input AC connects through J1 to two
10 Amp AC fuses F1 and F2. The AC line
#1 input connects from J1-1 to the F1
fuse. The AC line #1 input after the F1
fuse is split with one line connected back
to Jack J1 Pin 4, which becomes the AC
Line #1 to the Fan. The other line of the
split connects to J4. The AC line #2 input
connects from J1-3 to the F2 fuse. The
AC line #2 input after the F2 fuse is split
with one line connected back to Jack J1 at
Pin 5, which becomes the AC Line #2 to
the Fan. The other line of the split
connects to J2. J1-2 is the earth ground
input for the AC and connects to J3.
Three 150 VAC, for 115 VAC input, or three
275 VAC, for 230 VAC input, MOVs are
connected to the input AC for protection.
One connects from each AC line to ground
and one connects across the two lines.
VR1 connects from J4 to J2, VR2 connects
from J4 to J3 and VR3 connects from J2 to
J3.
4.2.1.1.1 +12 VDC Circuits
+12 VDC from the Switching Power
Supply Assembly connects to J6 on the
board. The +12 VDC is divided into four
separate circuits each with a 3 amp self
resetting fuse, PS3, PS4, PS5 and PS6.
The polyswitch resettable fuses may open
on a current as low as 2.43 Amps at
50°C, 3 Amps at 25°C or 3.3 Amps at
0°C. They definitely will open when the
current is 4.86 Amps at 50°C, 6 Amps at
25°C or 6.6 Amps at 0°C.
PS3 protects the +12 VDC 2 Amp circuits
for the System Controller, the Amplifier
Controller and the Spare Slot through J62
pins 7, 8, 9 and 10. If this circuit is
operational, the Green LED DS3, mounted
on the board, will be lit.
PS4 protects the +12 VDC 2 Amp circuits
for the Modulator and the IF Processor
through J62 pins 13, 14, 15 and 16. If
Innovator™ HX Series Digital Chapter 4, Circuit Descriptions,
UHF Transmitter Control/Exciter Cabinet Assemblies
Volume 1, Rev. 0 4-3
this circuit is operational, the Green LED
DS4, mounted on the board, will be lit
PS5 protects the +12 VDC 2 Amp
circuits for the Upconverter through J62
pins 17, 18, 19 and 20. If this circuit is
operational, the Green LED DS5,
mounted on the board, will be lit
PS6 protects the +12 VDC 2 Amp
circuits for the Remote through J63 pins
17, 18, 19 and 20. If this circuit is
operational, the Green LED DS6,
mounted on the board, will be lit
4.2.1.1.2 -12 VDC Circuits
-12 VDC from the Switching Power
Supply Assembly connects to J5 on the
board. The -12 VDC is divided into two
separate circuits each with a 3 amp self
resetting fuse, PS1 and PS2.
PS1 protects the -12 VDC 2 Amp circuits
for the System through J63 pins 1, 2, 3
and 4. If this circuit is operational, the
Green LED DS1, mounted on the board,
will be lit
PS2 protects the -12 VDC 2 Amp circuits
for the Remote through J62 pins 1, 2, 3
and 4. If this circuit is operational, the
Green LED DS2, mounted on the board,
will be lit
The connections from J62 and J63 of the
Power Protection Board are wired to J62
and J63 on the Control Board.
4.2.1.2 (A3) Control Board (1302021;
Appendix D)
The control monitoring functions and
front panel operator interfaces are found
on the Control Board. Front panel
operator interfaces are brought to the
control board using a 26 position
conductor ribbon cable that plugs into
J60. The control board controls and
monitors the Power Supply and Power
Amplifier module through a 16 position
connector J61 and two 20 position
connectors J62 & J63.
4.2.1.2.1 Schematic Page 1
U1 is an 8 bit RISC microcontroller that is
in circuit programmed or programmed
using the serial programming port J4 on
the board. When the microcontroller, U1,
is held in reset, low on pin 20, by either
the programming port or the external
watchdog IC (U2), a FET Q1 inverts the
reset signal to a high that connects to the
control lines of U5, an analog switch. The
closed contacts of U5 connect the serial
programming lines from J4 to U1. LED
DS10 will be lit when programming port J4
is used.
U2 is a watchdog IC used to hold the
microcontroller in reset, if the supply
voltage is less the 4.21 VDC; (1.25 VDC <
Pin 4 (IN) < Pin 2 (Vcc). The watchdog
momentarily resets the microcontroller, if
Pin 6 (ST) is not clocked every second. A
manual reset switch S1 is provided but
should not be needed.
Diodes DS1 through DS8 are used for
display of auto test results. A test board
is used to execute self test routines.
When the test board is installed,
Auto_Test_1 is held low and Auto_Test_2
is allowed to float at 5 VDC. This is the
signal to start the auto test routines.
U3 and U4 are used to selectively enable
various input and output ICs found on
pages 2 & 3 of the schematic.
U1 has two serial ports available. In this
application, one port is used to
communicate with transmitter system
components where U1 is the master of a
RS-485 serial bus. The other serial port is
used to provide serial data I/O where U1
is not the master of the data port. A dual
RS-232 port driver IC and a RS-485 Port
driver are also in the second serial data
I/O system. The serial ports are wired
such that serial data input can come
through one of the three serial port
channels. Data output is sent out through
each of the three serial port channels.
Innovator™ HX Series Digital Chapter 4, Circuit Descriptions,
UHF Transmitter Control/Exciter Cabinet Assemblies
Volume 1, Rev. 0 4-4
Switch SW1, transmitter operation
select, is used to select either
transmitter operation or exciter/driver
operation. When the contacts of SW1
are closed, transmitter operation is
selected and the power monitoring lines
of the transmitter’s power amplifier are
routed to the system power monitoring
lines.
4.2.1.2.2 Schematic Page 2
U9 is a non-inverting transceiver IC that
provides 2 way asynchronous
communication between data busses.
The IC is used as an input buffer to
allow the microcontroller to monitor
various digital input values.
Digital output latch circuits are used to
control system devices. Remote output
circuits are implemented using open
drain FETs, Q13, Q14, Q16, and Q17,
with greater than 60 Volt drain to source
voltage ratings.
Remote digital inputs are diode
protected, using CR6, CR7, CR8 and CR9
with a 1 kO pull-up resistor, to +5 VDC.
If the remote input voltage is greater
than about 2 Volts or floating, the FET is
turned on and a logic low is applied to
the digital input buffer, U9. If the
remote input voltage is less than the
turn on threshold of the FET (about 2
VDC), a logic high is applied to the
digital input buffer, U9.
Four of the circuits on page two of the
schematic, which include Q2, Q9, Q19
and Q21, are auxiliary I/O connections
wired for future use. They are wired
similar to the remote digital inputs but
include a FET, Q5, Q12, Q20 and Q22,
for digital output operations. To operate
these signals as inputs, the associated
output FET must be turned off. The
FETs are controlled by U10 and U12,
analog input multiplexer ICs.
4.2.1.2.3 Schematic Page 3
U13, U14, U15, U16, U17 and U18 are 3
state non-inverting transceiver ICs that
provide 2 way asynchronous
communication between data busses. The
ICs are used as input buffers to allow the
microcontroller to monitor various digital
input values. The digital inputs to the ICs
utilize a 10 kO pull-up resistor. The buffer
IC, U18, used for data transfer to the
display is wired for read and write control.
Table 4-1: Innovator HX DIP Switch
Settings for SW2 located on the Exciter
Control Board (1302021) in the Power
Supply/Controller Assembly
Switch
Position Function
SW2-1 0 = No Modulator in a translator configuration
1 = Modulator present.
SW2-2 0 = Normal
1 = Aural Upconverter not to be installed
SW2-3 0 = Normal
1 = IP Processor not to be installed
SW2-4 0 = Normal
1 = Modulator not to be installed
SW2-5 0 = Normal
1 = Visual Upconverter not to be installed
SW2-6 0 = Off
1 = On
SW2-7 0 = Off
1 = On
SW2-8 0 = Off
1 = On
NOTES:
1) The System Controller’s DIP Switch 2
(lower bank of 8 switches) settings are
01110000 (1-8). 2) These switch
positions are factory set for your system
and should not be changed.
4.2.1.2.4 Schematic Page 4
U19 and U20 are digitally controlled
analog switches that provide samples back
to the microprocessor. Each analog input
is expected to be between 0 and 5 VDC.
If a signal exceeds 5.1 VDC, a 5.1 Volt
Zener diode clamps the signals voltage, to
prevent damage to the IC. Most signals
are calibrated at their source, however
two dual serial potentiometers ICs are
used to calibrate four signals, System
Average Power, System Aural Power (Not
Used), System Reflected Power and the
Innovator™ HX Series Digital Chapter 4, Circuit Descriptions,
UHF Transmitter Control/Exciter Cabinet Assemblies
Volume 1, Rev. 0 4-5
Spare AIN 1. For these four circuits, the
input value is divided in half before it is
applied to an op-amp. The serial
potentiometer is used to adjust the
output signal level to between 80 and
120% of the input signal level. Serial
data, serial clock and serial pot enables
are supplied by the microprocessor to
the dual serial potentiometer ICs. J62
and J63 are two 20 position connectors
that provide the +12 VDC and –12 VDC
power through the Power Protection
Board. The ±12 VDC generated by the
switching power supply connects to J62
and J63 after being fuse protected on
the Power Protection Board.
4.2.1.2.5 Schematic Page 5
There are three dual element,
red/green, common cathode LED
indicators mounted on the front panel of
the sled assembly; DC OK, Operate and
Fault.
There are three, the fourth is a spare,
identical circuits that drive the front
panel mounted LED indicators. The
levels on the 1, 2, 3 and 4 LED Control
Lines, for both the red and green LEDs,
are generated by the IC U11 as
controlled by the DATABUS from the
microprocessor U1.
Each LED controller circuit consists of an
N-Channel MOSFET w/internal diode that
controls the base of an N-P-N transistor
in an emitter follower configuration. The
emitter of the transistor connects the
LED.
With the LED control line LOW, the
MOSFET is Off, which causes the base of
the transistor to increase towards +12
VDC, forward biasing the transistor.
With the transistor forward biased,
current will flow from ground through
the LED, the transistor and the current
limiting resistors in the collector to the
+12 VDC source. The effected LED will
light.
With the LED control line HIGH, the
MOSFET is On, which causes the base of
the transistor go toward ground potential
that reverse biases the transistor. With
the transistor reverse biased, no current
through the transistor and LED, therefore
the effected LED will not light.
A third color, amber, can also be
generated by having both transistors
conducting, both control lines LOW. The
amber color is produced because the
current applied to the green element is
slightly greater than the red element.
This occurs because the current limiting
resistors have a smaller ohmage value in
the green circuit.
There are four voltage regulators, three
for +5 VDC and one for +7 VDC, which
are used to power the Control Board. +12
VDC is applied to U25 the +7 VDC
regulator that produces the +7 VDC,
which is applied to the LEDs mounted on
the board. The +7V is also connected to
the input of U26 a precision +5.0 Volt
regulator. The +5.0 VDC regulator output
is used to power the analog circuits and as
the microcontroller analog reference
voltage. Another two +5 Volt regulator
circuits U27, +5V, and U8, +5 Vserial, are
used for most other board circuits.
4.2.1.3 (A4) Switch Board (1527-1406;
Appendix D)
The switch board provides five front-panel
momentary contact switches for user
control and interface with the front-panel
LCD menu selections. The switches, SW1
to SW5, complete the circuit through
connector J1 to connector J2 that
connects to J1 on (A5) the 20 Character
by 4 line LCD Display. J1 on the switch
board is also cabled to the Control Board.
When a switch is closed, it connects a
logic low to the control board that supplies
the information from the selected source
to the display. By pushing the button
again, a different source is selected. This
occurs for each push button. Refer to
Chapter 3 Section 3.5.3, for more
information on the Display Menu Screens.
Innovator™ HX Series Digital Chapter 4, Circuit Descriptions,
UHF Transmitter Control/Exciter Cabinet Assemblies
Volume 1, Rev. 0 4-6
4.2.1.4 (A2) Switching Power Supply
Assembly
The power supply module contains a
switching power supply, an eight
position terminal block for distributing
the DC voltages, a three position
terminal block to which the AC Input
connects. Jack J1 connects to the
Control Board and supplies DC OK, at
J1-4 & 3, and AC OK, at J1-2 & 1, status
to the control board. A Power Supply
enable connects from the control board
to the power supply at V1-6 & 7. The
power supply is configured for three
output voltages +12V, -12V, at the 8
position terminal block, and a main
output power of +32 VDC at J50 pin A
(+) and J50 pin B (Rtn). The power
supply is power factor corrected to .98
for optimum efficiency and a decrease in
energy consumption. For safety
purposes all outputs are over voltage
and over current protected. This supply
accepts input voltages from 85 to 264
volts AC, but the power entry module,
for the exciter/amplifier chassis, must
be switched to the proper input voltage
setting, for the transmitter to operate.
4.2.2 (A4) Driver Power Amplifier
Assembly (1306019; Appendix D)
The Power Amplifier Module Assembly
contains (A5) an Amplifier Control Board
(1304774), (A1) a 1 Watt UHF Amplifier
Assembly (1302891), (A3) a RF Module
Pallet, 250W (1300116), and a Coupler
Board (1227-1316).
The RF input from the external DT2B
Upconverter connects through a 10 dB
pad, to the IPA RF Input BNC Jack J24
(≈0 dBm), located on the rear of the
driver/amplifier chassis assembly.
4.2.2.1 (A1) 1-Watt UHF Module
Assembly (1302891; Appendix D)
The 1-watt UHF module assembly
provides radio frequency interference
(RFI) and electromagnetic interference
(EMI) protection, as well as the heatsink,
for the 1-watt UHF amplifier board
(1302761) that is mounted inside the
assembly. The assembly has
approximately 17 dB of gain.
The RF input to the assembly connects to
SMA Jack J3. The amplified RF output of
the assembly is at the SMA Jack J4.
Typically, with an input signal of +0 dBm
at J1 of the assembly, an output of
+17 dBm can be expected at J2.
The +12-VDC bias voltage connects
through J5, a RF-bypassed, feed-through
capacitor, to the amplifier board. The
-12-VDC bias voltage connects through J6,
a RF-bypassed, feed-through capacitor, to
the amplifier board. E1 on the assembly
connects to Chassis Ground.
4.2.2.2 (A1-A1) 1-Watt UHF Amplifier
Board (1302761; Appendix D)
The 1-watt UHF amplifier board is mounted
in the 1-watt UHF amplifier assembly
(1302891) and provides approximately
+17 dB of gain.
The UHF signal enters the board at J3, a
SMA connector, and is applied to U3 an IC
hybrid coupler assembly that splits the
input signal into two equal parts. The two
amplifier paths are identical using Q4 and
Q5, 1-Watt HFETs as the amplifier devices.
Each HFET has approximately 14 dB of
gain.
The drain voltage needed to operate each
HFET is obtained from the +12 VDC line
that connects to the board at J5 and is
regulated down to +8.25 volts by U4. The
gate negative bias voltage is obtained from
the -12 VDC line that connects to the
board at J6.
The amplified outputs of the HFETs are
applied to U2 an IC hybrid coupler
assembly that combines the amplified
signals into a single output that connects
to J4 of the board.
Innovator™ HX Series Digital Chapter 4, Circuit Descriptions,
UHF Transmitter Control/Exciter Cabinet Assemblies
Volume 1, Rev. 0 4-7
4.2.2.3 (A3) UHF Module Assembly,
RF Module Pallet, Philips (1300116;
Appendix D)
The UHF Module Assembly, 250-watt
module is a broadband amplifier for the
frequency range 470 to 860 MHz. The
amplifier is capable of delivering an
output power of ≈70 Wrms. The
amplification is approximately 13 dB.
The amplification circuit consists of the
parallel connected push-pull amplifier
blocks V1 and V2 operating in class AB.
In order to match the transistor
impedance to the characteristic
impedance of the input and output
sides, matching networks are placed
ahead and behind the amplifier blocks.
Transformers Z3 to Z6 serve to balance
the input and output signals. The
paralleling circuit is achieved with the
aid of 3-dB couplers Z1 and Z2.
The working point setting is factory
implemented by means of
potentiometers R9, R11, and R12 and
should not be altered.
4.2.2.4 (A4) Coupler Board
Assembly (1227-1316; Appendix D)
The UHF coupler board assembly
provides forward and reflected power
samples of the output to (A5) the
amplifier control board where it connects
to the input of the overdrive-protection
circuitry.
The RF input to the UHF coupler
assembly, from the UHF amplifier
Assembly, connects to SMA jack J1. The
RF is connected by a stripline track to the
SMA type connector RF Output jack J2. A
hybrid-coupler circuit picks off a power
sample that is connected to SMA type
connector jack J3 as the forward power
sample. Another power sample is taken
from the coupler circuit that is connected
to SMA type connector jack J6 as the
reflected power sample. Two 50O
terminations, used as dissipation loads,
connect to the reject and reflected ports,
J5 and J4, of the coupler.
4.2.2.5 (A5) Amplifier Control Board
(1304774; Appendix D)
The amplifier control board provides LED
fault and enable indications on the front
panel of the module and also performs the
following functions: overdrive cutback,
when the drive level reaches the amount
needed to attain 110% output power; and
overtemperature, VSWR, and overdrive
faults. The board provides connections to
the LCD Display for monitoring the %
Reflected Power, % Output Power, and the
power supply voltage.
If the Module OK LED, located on the front
panel, is Red and blinking, a fault is
present. The meaning of the blinking LED
is as follows.
Table 4-2: Module OK LED Red and
Blinking interpretation
Red
LED
Blinking Meaning
1 Blink Indicates Amplifier Current Fault
2 Blinks Indicate Temperature Fault
3 Blinks Indicate +32V Power Supply Over Voltage
Fault
4 Blinks Indicate +32V Power Supply Under Voltage
Fault
5 Blinks Indicate Reflected Power Fault
6 Blinks Indicate +12V or –12V Power Supply Fault
7 Blinks Indicate AGC Overdrive Fault
4.2.2.5.1 Schematic Page 1
U4, located upper center of page, is an in
circuit microcontroller. The controller is
operated at the frequency of 3.6864 MHz
using crystal Y1. Programming of this
device is performed through the serial
programming port J2. U4 selects the
desired analog channels of U3 through the
settings of PA0-PA2. The outputs of Port A
must be set and not changed during an
analog input read of channels PA3-PA7.
PA3 of U4 is a processor operating LED
that monitors the +7 VDC. PA6 is the
selected channel of analog switch U1.
Innovator™ HX Series Digital Chapter 4, Circuit Descriptions,
UHF Transmitter Control/Exciter Cabinet Assemblies
Volume 1, Rev. 0 4-8
U2 is a serial to RS-485 driver IC. U5 is
a watchdog IC used to hold the
microprocessor in reset, if the supply
voltage is less than 4.21 VDC. U5
momentarily resets the microcontroller if
Pin 6 (ST) is not clocked every second. A
manual reset switch is provided but
should not be needed.
In the Upper left corner, U1 is used to
determine where the amplifier control
board is located. The eight inputs come
from the main amp connector and are
used to set the SCADA address of the
controller. Pull-up resistors set a default
condition of logic high.
The IC above U8 controls the four board
mounted status LEDs. A FET is turned
On to shunt current away from the LED
to turn it Off. U8 is not used in this
configuration.
4.2.2.5.2 Schematic Page 2
In the lower right corner are voltage
regulator circuits. U17 provides a
regulated +7 VDC output using the +12
VDC input. U18 and U19 are low drop
out +5 VDC, voltage regulators from +7
VDC inputs with a tolerance greater than
or equal to 1%. 100mA of current is
available from each device. U18 provides
+5Vanalog and U19 provides +5Vdigital
outputs.
In the center left section of the schematic
are circuits using U12B and U13A that
monitor the +32 VDC power supply
voltage level. U12B pin 7 goes Low in
the event of high power supply voltage,
approximately +35.4 VDC or higher,
producing a power supply High fault.
U13A pin 1 goes Low if the power supply
voltage drops lower than approximately
+25.4 VDC, producing a power supply
Low fault.
4.2.2.5.3 Current monitoring sections of
the board.
The ICs U14 for Amp #1, U15 for Amp
#2, and U16 for Amp #3, along with
associated components set up the current
monitoring sections of the board.
The IC U10A is controlled by U14. A high
at U10A pin 1 indicates normal, a Low
indicates high current, above 5 Amps, and
a fault alert is generated. The IC U10B is
controlled by U15. A high at U10B pin 1
indicates normal, a Low indicates high
current, above 15 Amps, and a fault alert
is generated. The IC U12A is controlled by
U16. A high at U12A pin 1 indicates
normal, a Low indicates high current,
above 15 Amps, and a fault alert is
generated.
R67, R68 and R69, near U14, U15 and
U16, are 0.01O/5W 1% through hole
resistors used for monitoring the current
through several sections of the amplifier
modules. The voltages developed across
these resistors are amplified for current
monitoring by U14, U15 or U16. The
LT1787HVCS8 precision high side current
sense IC amplifier accepts a maximum
voltage of 60 VDC. The 43.2 kO resistor
from pin 5 to ground sets the gain of the
amplifier to about 17.28. This value is not
set with much accuracy since the
manufacturer internally matches the
resistors of this part but their actual
resistance value is not closely defined. A
trimming resistor is suggested to give a
temperature stability of –200 ppm/C, but
instead the microcontroller will determine
the exact gain of the circuit and use a
correction factor for measurements.
Circuit loading components are located in
the lower portion of each current
monitoring circuit. These components
allow for short duration high current
loading of the supply by measuring the
current through the sense resistor with and
without the additional four 30.1 O 1%
resistors. For very short duration pulses, a
1206 resistor can handle up to 60 watts.
The processor requires 226 uSec per
conversion. A supply voltage of +32 VDC
will pass 1.06 amps + 1% through the load
resistors.
A6 is a temperature sensor thermistor,
mounted on the heatsink of the amplifier
module, which is used to monitor the
Innovator™ HX Series Digital Chapter 4, Circuit Descriptions,
UHF Transmitter Control/Exciter Cabinet Assemblies
Volume 1, Rev. 0 4-9
temperature of the heat sink. It
connects to J6 pins 1 & 2 on the board
and is wired to the comparator IC U13B.
If the temperature increases above 75°C
the output will go Low that is used as a
temperature fault output, which
generates a Fault alert and disables the
Amplifier.
4.2.2.5.4 Schematic Page 3, Digital and
Reflected power detector sections of the
board.
A Digital Power Sample enters the board
at the SMA Jack J3 and is split. One part
connects to J4 on the board that is the
SMA Digital Power Sample Jack, located
on the front panel of the assembly.
NOTE: In this configuration, the Jumper
W3 on J12 is connected between pins 1 &
2, which uses the digital average sample
path. The other part of the split digital
power sample is averaged by U26 and
associated components and connected to
R201, the Average Power Calibration
Adjustment. R201 sets the level to the
IC U22B, which amplifies the digital
power sample before it is split. One
digital power sample (Average Power)
connects back to U4 on Page 1. Another
average power sample connects through
the jumper on J12 to a split point. A
sample of the digital power (Selected
Forward Power) connects back to U3 on
Page 1. The digital power sample
connects to amp U27B whose output is
level detected by CR29, CR28 and CR30
and connected back to Page 1 (Average
Power Remote) at J8-7 for remote use.
A Digital Reflected Power Sample enters
the board at the SMA Jack J5 and is
detected by CR31 and the DC level
amplified by U21B. The output of U21B
at pin 7 is connected through the
digital/visual reflected calibration pot
R203 to U25A. The output is split with
one part connected to the (Reflected Pwr
V) connection on Page 1 of the schematic
that connects to U3. The other part of
the split from U25A connects to the
comparator IC U25B that has a reference
level connected to Pin 5. If the reflected
level increases above the reference level a
low Fault output is produced and connected
to the Reflected Power Shutdown V circuit
on Page 2 at CR14 & CR15, which produces
a Reflected Power Fault V that is connected
to an output of the board, the Fault Alert
circuit and also shuts down the Amplifier.
NOTE: The Aural forward and reflected
portions of this board, whose description
follows, are not used in this digital
transmitter.
An Aural Power Sample enters the board at
the SMA Jack J13 and is split. One part
connects to J14 on the board that is the
Aural Power Sample Jack, located on the
front panel of the assembly. The other
part of the split aural power sample is
detected by CR36 and the DC level
amplified by U28A. The output of U28A at
pin 1 is connected to R204, the Aural
Power Calibration Adjustment. R204 sets
the level to the IC U29A, which amplifies
the aural power sample before it is split.
One aural power sample, Aural Power
connects back to U4 on Page 1. Another
aural power sample connects to amp U29B
whose output is level detected by CR39,
CR37 and CR40 and back to Page 1, Aural
Power Remote, at J8-9 for remote use.
An Aural Reflected Power Sample enters
the board at the SMA Jack J15 and is
detected by CR41 and the DC level
amplified by U28B. The output of U28B at
pin 7 is connected through the aural
reflected calibration pot R205 to U30A.
The output is split with one part connected
to the Reflected Pwr A connection on Page
1 of the schematic that connects to U3.
The other part of the split from U30A
connects to the comparator IC U30B that
has a reference level connected to Pin 5. If
the reflected level increases above the
reference level a low Fault output is
produced and connected to the Reflected
Power Shutdown A circuit on Page 2 at
CR43 & CR44, which produces a Reflected
Power Fault A that is connected to an
output of the board, the Fault Alert circuit
and also shuts down the Amplifier.
Innovator™ HX Series Digital Chapter 4, Circuit Descriptions,
UHF Transmitter Control/Exciter Cabinet Assemblies
Volume 1, Rev. 0 4-10
The level of the output power
measurements is completed through
software. Only the Aural Null and Offset
Null need to be adjusted through front
panel pots.
This completes the circuit description of the
Power Amplifier Module Assembly and the
entire Driver/Amplifier Assembly.
Innovator® HX Series Digital Chapter 5,Detailed
UHF Transmitter Alignment Procedures
Volume 1, Rev. 0 5-1
Chapter 5
Detailed Alignment Procedures
5.1 System Preparation
This transmitter was aligned at the
factory and should not require additional
adjustments to achieve normal operation.
This transmitter takes the SMPTE 310
digital stream input and converts it to the
desired UHF On Channel RF Output that
is amplified to produce the systems
output power level.
The Driver/Amplifier and the Power
Amplifier Assemblies of the Innovator HX
Series transmitter are of a Modular
design and when a Module fails that
module needs to be changed out with a
replacement module. The failed module
can then be sent back to Axcera for
repair. Contact Axcera Customer Service
Department at 724-873-8100 or fax to
724-873-8105, before sending in any
module.
5.2 Module Replacement
Module replacement on the HX Series
products is a relatively simple process.
In the Exciter/Driver assembly, the
individual modules plug into a blind
mating connector located on the chassis.
To replace a module, refer to the
following procedure.
Loosen the two grip lock connectors,
located on the front panel, at the top
and bottom of the module,
counterclockwise until the module
releases. The Modulator, IF Processor,
Upconverter and Controller/Power
Supply can then be gently pulled from
the unit. To remove the Driver/Power
Amplifier Module in the exciter/amplifier
chassis assembly, the two cables, Input
and Output, connected to the rear of the
chassis must be removed. These two
cables and also a 6/32” x ½” shipping
screw, located between the two
connectors, must be removed before the
module will slide out. After removal of
the failed module, slide the replacement
module in place and make certain it
connects to the backplane board.
Tighten the two grip lock connectors.
NOTE: If the replacement module is a
driver/PA Module also replace the two
cables to the rear of the exciter/
amplifier chassis assembly. The 6/32” x
½” shipping screw does not need to be
replaced. It is only used during
shipping. If the replacement module
does not slide in easily, verify it is
properly aligned in the nylon tracks,
located on both the top and bottom of
the module.
After removal of the failed module, slide
the replacement module in place and
make certain it connects to the blind
mate connector. Replace the two cables
on the rear of the IPA chassis assembly.
If the replacement module does not
slide in easily, verify it is properly
aligned in the nylon tracks, located on
both the top and bottom of the module.
Note: Each Module has an assigned slot
and will not fit properly or operate in the
incorrect slot. Do not try to place a
Module in the wrong slot as this may
damage the slot or the connectors on
the backplane board. Each module has
the name of the module on the front,
bottom for identification and correct
placement. The Modules are placed in
the unit from left to right; (1) Axciter
Downconverter, (2) Blank panel, (3)
Blank Panel, (4) Axciter Upconverter, (5)
Controller/Power Supply and (6) Driver
Power Amplifier.
5.3 Initial Test Set Up
Check that the RF output at the DTV
Mask Filter is terminated into a dummy
load of at least the rated output of the
system or connected to the antenna for
Innovator® HX Series Digital Chapter 5,Detailed
UHF Transmitter Alignment Procedures
Volume 1, Rev. 0 5-2
your system. While performing the
alignment, refer to the Test Data Sheet
for the transmitter and compare the final
readings from the factory with the
readings on each of the modules. The
readings should be very similar. If a
reading is way off, the problem is likely
to be in that module.
Switch On the main AC for the system
and the individual circuit breakers on
each cabinet. Check that AC is present
to all systems.
This transmitter operates using a SMPTE
310 input that connects to J27, the MPEG
Input Jack, located on the rear of each
Axciter Modulator Trays in the exciter
control cabinet. Check that the MPEG
input is present. If used, check that the
10 MHz input from the GPS is connected
to J9 on the Axciter Modulator.
The GUI screen, located at the top front
of the Control/Exciter Cabinet, controls
the functional operation of the
transmitter and in turn the exciter.
The check of and the setup of the drive
levels are completed using the LCD
Display and the front panel adjustments
located on the Axciter Modulator Tray.
The level of the RF output which includes
adjustment of the drive level of the
Intermediate Power Amplifier and the
adjustment of the linearity and phase
pre-distortion to compensate for any
nonlinear response of the Power
Amplifiers are controlled within the
Axciter Modulator Tray.
NOTE: Refer to the separate Axciter
Instruction Manual for detailed
information.
5.4 Setting Up the Output Power of
the Transmitter
NOTE: In dual exciter systems perform
the following procedures with Exciter A
as the ON Air Exciter then repeat with
Exciter B as the On Air Exciter.
The following adjustments are
completed using the LCD screen located
on the front panel of the Axciter
Modulator Tray. On the Axciter Main
Screen, push the button next to the
Upconverter tab on the right side of the
screen. This will open the Upconverter
Main Screen. Set the AGC to Manual by
selecting 3 on the key board entry. The
screen will now indicate AGC Manual.
Set the transmitter to full power using
the Driver/Amplifier LCD display while
viewing the Power Control Screen in the
Set Up Menu.
5.4.1 Setting up of AGC 1
To set up the AGC, first the AGC must
be activated. Locate the 8 position DIP
switch SW1 mounted on the Control
Board in the Axciter Upconverter Sled,
mounted in the HX Driver/Amplifier
Assembly. The Upconverter DIP Switch
Position 6 must be switched ON which
allows the user to modify the AGC 1 and
AGC 2 gain through the Axciter
Modulator.
See Figure 5-1 for an example of the
Axciter Upconverter Main Screen. On
the Axciter Upconverter Screen set AGC
1 to 1.5 Volts, by selecting 4 on the key
board entry. This will cause a detail
screen to appear prompting you to enter
a number value. Monitor the AGC 1
Gain Value on the screen and increase
or decrease the value of the number
entered until the monitored reading is
1.5 Volts.
Innovator® HX Series Digital Chapter 5,Detailed
UHF Transmitter Alignment Procedures
Volume 1, Rev. 0 5-3
Figure 5-1: Axciter Upconverter Main Screen
5.4.2 Setting up of AGC 2
On the Axciter Upconverter Screen set
AGC 2 to 1.7 Volts, by selecting 5 on the
key board entry. This will cause a detail
screen to appear prompting you to enter
a number value. Monitor the AGC 2
Gain Value on the screen and increase
or decrease the value of the number
entered until the monitored reading is
1.7 Volts.
After the setting up of the AGC, the AGC
must be de-activated to prevent
accidental changes. The Upconverter
DIP Switch SW1 Position 6 must be
switched OFF which locks the AGC 1 and
AGC 2 gain.
5.4.3 Setting up of Overdrive
Threshold
On the Axciter Upconverter Screen set
the Overdrive Threshold to 1.6 Volts, by
selecting 7 on the key board entry. This
will cause a detail screen to appear.
Increase or decrease the voltage as
needed until the monitored reading is
1.6 Volts.
Place the Transmitter into AGC by
pushing the 3 of the key board entry on
the Axciter Upconverter Screen. This
will place the Transmitter AGC into Auto.
5.4.4 Axciter Relay Sample Values
RF samples to the Axciter Relay:
These levels are to be measured with a
power meter before connecting them.
Your installation may require RF
attenuators to be placed in line with the
Innovator® HX Series Digital Chapter 5,Detailed
UHF Transmitter Alignment Procedures
Volume 1, Rev. 0 5-4
samples to get them within the desired
range.
J1 connection to the FWD power sample
of the coupler before the mask filter
(Non-Linear Distortion).
Level into Relay at J1 should be 0 dBm
to –10 dBm. –5 dBm typical
J2 connection to the forward power
sample after the mask filter (Linear
Distortion).
Level into Relay at J2 should be 0 dBm
to –10 dBm. –5 dBm typical, but within
.5 dB of the J1 sample.
5.4.5 Upconverter Down Converter
Adjustment
On the Axciter Modulator, activate the
Upconverter Main screen by selecting
Upconverter using the button next to it
on the right side of the Axciter Main
Screen. Activate the Downconverter
Output Gain by pushing 2 on the key
board entry. Monitor the DTVision
Linear Display by pushing the button
next to the DTVision Linear display on
the right side of the Axciter Main Screen.
At the bottom of the DTVision linear
screen, locate the reading next to RMS.
If this reading is between –10 dBm & 0
dBm no adjustment is needed. If it is
not, adjust the “Downconverter Gain”,
then view the RMS value until it is within
the –10 dBm to 0 dBm range.
5.5 System Calibration of Forward
and Reflected Powers Using the HX
Driver/Amplifier
5.5.1 Forward Power Calibration
Check that transmitter is at 100%
output power, as shown on the LCD
display on the (A3) HX Driver/Amplifier
in the Set Up menus.
Measure with a VOM, TP31-14, Red, and
TP31-12, Black, at the terminal block
TP31 located on the rear chassis of the
(A3) HX Series Driver/Amplifier Chassis
Assembly. Adjust R9, Forward
Calibration Adjustment, on the (A4) Dual
Peak Detector Board (1159965) for a
reading of .8VDC on the VOM. Locate
the Forward Power Adjust screen on the
HX Driver/Amplifier LCD display in the
Set Up menus and adjust the up or
down arrow as needed to achieve 100 %
output power.
This completes the forward power set
up.
5.5.2 Reflected Power Calibration
Switch the transmitter to Standby.
Remove the connector that is on Jack
J2, on the (A4) Dual Peak Detector
Board (1159965), and replace with the
connector now on J1, also inserting a 10
dB pad in series. Switch the transmitter
to operate. Monitor the LCD display on
the (A3) HX Driver/Amplifier in the Set
Up menus, reflected power screen.
Adjust R10, Reflected Calibration
Adjustment, on the (A4) Dual Peak
Detector Board (1159965) for a reading
of 10% on the display. Switch the
transmitter to Standby. Move the
connector back to J1 while removing the
10 dB pad. Replace the original
connector onto J2.
NOTE: In a dual exciter system, repeat
the above procedure with Exciter B
selected as the On Air Exciter.
This completes the set up and
adjustment of the transmitter.
If a problem occurred during alignment,
contact Axcera field service at 1-(724)
873-8100.
Appendix A
System Specifications
Innovator HX Series
High Power Solid State UHF & VHF Transmitters
With over twenty years of experience in the design and manufacture of solid
state transmitters, Axcera continues to provide the latest technology, enabling
our customers to focus on the future. The Innovator HX high power solid state
transmitter is available in power levels up to 100kW analog and 60 kW DTV
using the latest control, signal generation and RF amplifier technology, ensuring
long-term support.
These advanced solid state transmitters were designed specifically to meet the
needs of today’s broadcaster, offering high levels of reliability, efficiency and
performance. The modular construction provides a clear upgrade path, allow-
ing broadcasters to begin with a low power transmitter and easily add modules
to achieve any power level desired. With parallel amplifiers, in-circuit program-
mable control system and a choice of parallel linear or switching power sup-
plies, the Innovator HX is perfect for long-term, unattended operation.
Digital
Innovator HX Series
High Power Solid State UHF & VHF Transmitters
Digital
Digital Exciter-Modulator
100% DSP BASED
The DT2B digital television modulator represents the indus-
try’s most advanced ATSC exciter technology. Building on
the field proven hardware platform of Axcera’s digital ex-
citer family, the DT2B offers terrestrial broadcasters the most
flexible solution available. Because it operates using 100%
digital signal processing, the DT2B can evolve as broadcast
requirements change, helping to protect your investment for
many years to come. For COFDM operation, the Innovator™
DT is compatible with modulators from most COFDM modu-
lator manufacturers.
Parallel Broadband Amplifier Modules
NO TUNING REQUIRED
Every Innovator HX transmitter is comprised of highly reliable
broadband amplifier modules operating in a parallel config-
uration. Each module covers the entire operating band with
no tuning required and is designed to accept high power
transistors from multiple manufacturers, providing very ef-
ficient and linear operation and ensuring future support. For
convenience, each amplifier module operates independently,
allowing easy removal and replacement while the transmit-
ter is on the air, and all digital and analog power amplifier
modules are interchangeable.
Linear or Switching Power Supplies
THE CHOICE IS YOURS
The Innovator HX is available with either traditional linear
power supplies or modern switching supplies, each offering
specific benefits to the user.
High Efficiency Air-Cooling
QUIET, EFFICIENT & STRAIGHTFORWARD
COOLING SYSTEM DESIGN
The Innovator HX uses a hollow-fin heat-sink design that
minimizes the power amplifier module size without com-
promising cooling efficiency, resulting in a very small over-
all transmitter footprint. This unique low-pressure system
provides higher efficiency and less blower noise than other
designs. By providing low junction temperatures for the tran-
sistor devices, this cooling system ensures that high reliability
and optimum device life are easily achieved.
Adaptive Digital Equalization (ADE™)
AN INDUSTRY FIRST
Standard on all digital Innovator™ HX transmitters, Axcera’s
exclusive Adaptive Digital Equalization (ADE™) provides
dynamic digital pre-correction, automatically tracking and
correcting for distortions, both linear and non-linear, in the
complete transmitter system.
The continuous, real-time, non-linear component of ADE™
is by far the most critical element of the correction system.
Since the majority of linear distortions are caused by factors
external to the transmission system, ATSC set-top boxes are
designed to correct for large amounts of linear distortions.
However, since DTV receivers cannot correct for non-linear
distortions, this must be handled in the transmitter system or
coverage will be affected in the fringe areas.
Control & Monitoring
IN-CIRCUIT PROGRAMMABLE CONTROLLER
ENSURES FUTURE SUPPORT
All control and monitoring functions of the transmitter are
brought together in the in-circuit programmable control
unit and can be accessed both through the full-color touch-
screen graphical user interface (GUI) and the LCD menu lo-
cated on the front panel of the controller.
Test values, status information, pre-sets and fault indications,
as well as diagnostics to the component level are provided
through the LCD display and the GUI, and can be accessed
remotely through a serial interface.
DTVision Signal Analysis
UNIQUE SYSTEM CONTROL & ANALYSIS
Available on digital Innovator™ HX transmitters is Axcera’s
exclusive DTVision™ digital signal analysis and test system.
Designed to replace expensive DTV test equipment at a frac-
tion of the price, this system samples the transmitter output,
measures critical transmitter performance parameters, and
displays the sampled information on the modulator’s front
panel display – no external PC is required.
Innovator HX Series
High Power Solid State UHF & VHF Transmitters
Digital
SMPTE 310 In
Modulator Auto
Switcher
Optional Dual
Exciter/Switcher
Harmonic
Filter
PA
PA
PA
PA
PA
PA
PA
PA
Splitter
Network
Model suffix denotes actual number of amplifiers
Combiner
Optional
Optional Station
Load
Wattmeter
To Antenna
Output Switch
Bandpass Filter
Reject
Load
Reject
Load
SMPTE 310 In
Modulator Splitter
Auto
Switcher
Optional Dual
Exciter/Switcher
Harmonic
Filter
PA
PA
PA
PA
PA
PA
PA
PA
Splitter
Network
Model suffix denotes actual number of amplifiers
Combiner
PA
PA
PA
PA
PA
PA
PA
PA
Splitter
Network
Model suffix denotes actual number of amplifiers
Combiner
PA
PA
PA
PA
PA
PA
PA
PA
Splitter
Network
Model suffix denotes actual number of amplifiers
Combiner Optional
Optional
Station
Load
Wattmeter
To Antenna
Output Switch
Bandpass Filter
Typical Single PA Cabinet Architecture
Typical Multiple PA Cabinet Architecture
Systems available with up to
twelve PA cabinets for the
highest power requirements
PA Cabinet 1
PA Cabinet 2
PA Cabinet 3
PA Cabinet
Specifications published here are current as of the date of publication of this document. Because we are continuously improving our products, Axcera reserves the right to change specifications without prior
notice. At any time, you may verify product specifications by contacting our office. Axcera views it’s patent portfolio as an important corporate asset and vigorously enforces its patents. Products or features
contained herein may be covered by one or more U.S. or foreign patents.
0505R0 © 2005 AXCERA All Rights Reserved An Equal Opportunity Employer
103 Freedom Drive, PO Box 525, Lawrence, PA 15055 t: 724-873-8100 f:724-873-8105 www.axcera.com
Innovator HX Series
High Power Solid State UHF & VHF Transmitters
Digital
Performance
Frequency Range1
HLV 54 to 88 MHz
HHV 174 to 216 MHz
` HU 470 to 806 MHz
Output Impedance 50
Ω
- coaxial/waveguide
Frequency Stability ±1 kHz (max 30 day variation)
w/Precise Frequency Option ±2 Hz
Regulation of RF Output Power 3%
Out of Band -Compliant with FCC Mask
Channel Edge ±500kHz -47 dB or better
6MHz from Channel Edge -110 dB or better
Signal to Noise (SNR) 27 dB or better
Data Interface
Input Rate 19.39 Mbps, 6 MHz Channel
Input Interface SMPTE 310M
General
Operational Temperature Range 0 to +45° C, derate 2° C/1000 ft.
Maximum Altitude1 8500 ft. (2600 m) AMSL
Operational Humidity Range 0% to 95% non-condensing
RF Load Impedance 50
Ω
Line Voltage1 (User Specified) 208 or 240 VAC, 3 Phase
Power Factor (With Switching Supplies Option)2 0.95
Options
Switching Power Supplies2
DTVision Signal Analysis System
Bandwidth Enhancement Technology
Dual Exciter with Automatic Switcher
AC Surge Protector
Precise Frequency Kit
Spare Parts Kit
1 For other frequencies, altitudes and voltages - Consult Factory
2 Switching supplies available for VHF models only
3 “x” denotes operating band
4 Measured after Typical RF System. For custom configurations please contact the factory.
Model Specific Specifications
Model Number3 Hx30KAD Hx35KAD Hx40KAD Hx45KAD Hx50KAD Hx55KAD Hx60KAD
Power Output4 30 kW 35 kW 40 kW 45 kW 50 kW 55 kW 60 kW
Power Consumption 166 kW 194 kW 220 kW 245 kW 275 kW 300 kW 330 kW
Dimensions (H x W x D)
Inches 79”x 165”x 50” 79”x 189”x 50” 79”x 212”x 50” 79”x 236”x 50” 79”x 260”x 50” 79”x 284”x 50” 79”x 307”x 50”
Centimeters 200 x 420 x 127 200 x 480 x 127 200 x 540 x 127 200 x 600 x 127 200 x 660 x 127 200 x 720 x 127 200 x 780 x 127
Model Specific Specifications
Model Number3 Hx2500AD Hx5000AD Hx7500AD Hx10KAD Hx15KAD Hx20KAD Hx25KAD
Power Output4 2.5 kW 5 kW 7.5 kW 10 kW 15 kW 20 kW 25 kW
Power Consumption 14 kW 28 kW 41 kW 55 kW 83 kW 110 kW 138 kW
Dimensions (H x W x D)
Inches 79”x 47”x 50” 79”x 47”x 50” 79”x71”x50” 79”x 71”x 50” 79”x 95”x 50” 79”x 118”x 50” 79” x 142”x 50”
Centimeters 200 x 120 x 127 200 x 120 x 127 200 x 180 x 127 200 x 180 x 127 200 x 240 x 127 200 x 300 x 127 200 x 360 x 127
Appendix B
System Drawings
Innovator™ HX Series Digital Appendix B, System
UHF Transmitter Drawings
Volume 1, Rev. 0 B-1
Appendix B
Drawing List
HU5000AD Transmitter System Block Diagram .................................1310994
HU5000AD Transmitter System Interconnect....................................1310995
Appendix C
Control Cabinet
Drawings
Innovator™ HX Series Digital Appendix C, Control Cabinet
UHF Transmitter Drawings
Volume 1, Rev. 0 C-1
Appendix C
Drawing List
Digital UHF Control Cabinet, HX Series
Control Cabinet Single Exciter Block Diagram.........................................1308241
Control Cabinet Single Exciter Interconnect ...........................................1307571
Control Cabinet AC Interconnect...........................................................1307037
Dual Peak Detector Board
Schematic..........................................................................................1159976
Serial Loop-Thru Board
Schematic..........................................................................................1307812
Appendix D
UHF Exciter/Driver Assembly
Drawings
Innovator™ HX Series Digital Appendix D, UHF Exciter/Driver
UHF Transmitter Drawings
Volume 1, Rev. 0 D-1
Appendix D
Drawing List
Exciter/Driver Chassis Assembly, 110 VAC, HX Series
Interconnect.......................................................................................1305554
Backplane Board, HX Series, Axciter
Schematic..........................................................................................1307308
NOTE: The Upconverter Module and Downconverter Module drawings are located in the
separate Axciter Manual.
Control/Power Supply Assembly, 110 VAC
Block Diagram....................................................................................1303889
Interconnect.......................................................................................1302062
Control Board
Schematic..........................................................................................1302023
Power Protection Board
Schematic..........................................................................................1302839
Switch Board
Schematic.......................................................................................1527-3406
Power Amplifier Assembly, UHF Driver
Block Diagram....................................................................................1306026
Interconnect.......................................................................................1306025
Coupler Board Assembly
Block Diagram.................................................................................1227-3316
RF Module Pallet w/o Transistors (Made into a RF Module Pallet, Phillips 1300116)
Schematic.........................................................................51-5379-309-00WSP
1-Watt UHF Amplifier Board (Mounted in a 1 Watt UHF Module Assembly 1302891)
Schematic..........................................................................................1302762
Amplifier Control Board
Schematic..........................................................................................1304776

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