Axcera CHV400BTD User manual

Technical Manual
Innovator,
CHV400BTD,
ATSC VHF High Band Transmitter
Axcera, LLC
103 Freedo Drive, P.O. Box 525, Lawrence, PA 15055-0525, USA
PHONE: [phone] • FAX: [phone]
www.axcera.com • [e-mail]

RESTRICTIONS ON USE, DUPLICATION OR DISCLOSURE
OF PROPRIETARY INFORMATION
This document contains information proprietary to Axcera, to its affiliates or to a third party to
which Axcera may have a legal obligation to protect such information from unauthorized
disclosure, use or duplication. Any disclosure, use or duplication of this document or any of the
information herein for other than the specific purpose for which it was disclosed by Axcera is
expressly prohibited, except as Axcera may otherwise agree in writing. Recipient by accepting this
document agrees to the above stated conditional use of this document and this information
disclosed herein.
Copyright © 20 0, Axcera

Innovator CHV400BTD ATSC Transmitter Table of Contents
Technical Manual, Rev 0 i January 7, 2010
Table of Contents
Introduction ......................................................................................................
Manual Overview 1
Assembly Designators 1
Safety 1
Contact Information 3
Return Material Procedure 3
Limited One Year Warranty for Axcera Products 4
Unpacking and Installation ................................................................................
Unpacking 11
Installation 11
Tray Slide Installation ................................................................................ 2
AC Input Connections ....................................................................................... 3
Input and Output Connections ........................................................................... 4
Initial On Site Turn On Procedure....................................................................... 7
Typical System Operating Parameters ................................................................ 8
Typical Problems, Indications and Causes in CHV200B Tray................................... 9
LCD Display and Front Panel LED Indicators ........................................................ 9
System Remote Connections .............................................................................2
LCD Front Panel Screens...................................................................................22
Operation Screens 24
Set Up Screens 31
System Description ..........................................................................................37
(Optional) Innovator CHVB Series Web Ethernet Interface ....................................4
(Optional) Innovator CHVB Series SNMP Ethernet Interface...................................47
Circuit Descriptions of Boards in the CHV200B System .........................................49
(A1) 8 VSB Demodulator Board (1308275) - Only used with BRD operation 49
Overview..................................................................................................49
Microcontroller Functions............................................................................49
Jumper and DIP Switch Settings..................................................................49
(A2) Digital Modulator Board (1304883), Part of the Digital Modulator 50
w/Power Conditioner (1309629) 50
SMPTE-3 0 Input ......................................................................................50
Channel Coder ..........................................................................................50
Analog Output Section ...............................................................................50
Pilot Frequency Generation.........................................................................50
Voltage Requirements................................................................................5
(A3) IF Pre-Corrector Board (1308796) 51
Pin-Diode Attenuator Circuit ........................................................................52
In Phase and Quadrature Corrector Circuits ..................................................52
Frequency Response Corrector Circuit..........................................................53
ALC Circuit ...............................................................................................53
Input Fault and Modulation Fault Circuitry ....................................................54
± 2 VDC, +6.8 VDC, and VREF needed to operate the Board .........................55
(A4) Frequency Agile Upconverter Board (1309695) 55
(A5) ALC Board, Innovator CX Series (1308570) 56
(A6) Amplifier Assembly (1313959) – Used in the CHV20B Tray 57
(A6-A ) VHF HB Pre-Driver Assembly ( 3 3899) ..........................................57
(A6-A2) 50 Watt Amplifier Pallet, Italmec ( 3 3484) .....................................58
(A6) 200 Watt Driver Amplifier Assembly (1313912) – Used in the CHV200B 58
(A6-A ) 50 Watt Amplifier Pallet, Italmec ( 3 3484) .....................................58
(A6-A2) 500 Watt Amplifier Pallet, Italmec ( 3 358 ) ...................................58
(A7) Output Metering Detector Board (1313747) 58
(A8) Control Card, Innovator CX (1312543) 59

Innovator CHV400BTD ATSC Transmitter Table of Contents
Technical Manual, Rev 0 ii January 7, 2010
(A9 & A10) Power Supplies used in CHV20B, CHV200B, and Driver for CHV400B &
higher power 59
Circuit Description of External System Metering Board which is only used in
Transmitters with multiple external Amplifier Trays ..............................................60
(A5) System Metering Board (1312666) 60
Circuit Descriptions of Boards in the CHV400, 400 Watt ATSC Amplifier Tray...........6
(A7) Amplifier Control Board (1312260) 61
(A10) Current Metering Board (1309130) 61
(A5) 2 Way Splitter Board (1313941), in CHV400B 62
(A2 & A3) 500 Watt Amplifier Pallets (1313581) 62
(A6) 2 Way Combiner Board (1313969), in CHV400B 62
(A8 & A9) CHV400B, 500 Watt, 750 Watt and 1000 Watt Amplifier Tray Power
Supplies 62
(Optional) ASI to S3 0 Converter Module ...........................................................63
ASI Motherboard ( 3 79) .......................................................................63
ASI to 3 0 Conversion Board, Non-SFN ( 3 2 9) .........................................63
ASI to 3 0 Conversion Board, SFN ( 309764)................................................64
System Set Up Procedure .................................................................................65
Set Up of the LO1 and LO2 Samples on Upconverter Board 65
Set Up of the IF Precorrector Board in the System 66
ALC Board Set-Up, Forward and Reflected Power Calibration for CHV200B Systems
67
Forward and Reflected Power Calibration of CHV400B and Higher Power Systems
with one or more External Amplifier Trays 68
Linearity Correction Adjustment (Non-Linear Distortions) 70
Linearity Correction Adjustment (Linear Distortions) 71
APPENDIX A
Innovator,
CHV400BTD..........................................................................................................
Innovator CHV400BTD Transmitter System
Drawing List .........................................................................................................
APPENDIX B
Innovator,
CHV20BTD, ..........................................................................................................
Innovator CXB Series Transmitter
CHV20BTD Driver Tray,
Subassemblies & Boards Drawing List ......................................................................
APPENDIX C
Innovator,
CHV400B, ............................................................................................................
Innovator CXB Series Transmitter
CHV400B Amplifier Tray,
Subassemblies & Boards Drawing List ......................................................................

Innovator CHV400BTD ATSC Transmitter Introduction
Technical Manual, Rev 0 1
Introduction
Manual Overview
This manual contains the description of the Innovator CHV400BTD ATSC Transmitter and
the circuit descriptions of the boards, which make up the system. The manual also
describes the installation, setup and alignment procedures for the system.
Appendix A of this manual contains the system level drawings and parts lists for the
Innovator CHV400BTD ATSC Transmitter System. Appendix B contains the Tray,
subassemblies and boards drawings and parts lists for the CHV200BTD Driver Tray.
Appendix C contains the Tray, subassemblies and boards drawings and parts lists for
the CHV400B Amplifier Tray. NOTE: Information and drawings on the Axciter, if part of
your system, are contained in the separate Axciter Instruction Manual.
Asse bly Designators
Axcera has assigned assembly numbers, Ax designations such as A , where x= ,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 diagram and interconnect drawings
provided in Appendix A.
The cables that connect between the boards within a tray or assembly and that connect
between the trays, racks and cabinets are labeled using markers. Figure is an
example of a marked cable. There may be as few as two or as many as four Markers on
any one cable. These markers are read starting farthest from the connector. If there
are four Markers, the marker farthest from the connector is the system number such as
system or transmitter 2. The next or the farthest Marker is the rack or cabinet “A”
number on an interconnect cable or the board “A” number when the cable is within a
tray. The next number on an interconnect cable is the Tray location or Board “A”
number. The marker closest to the connector is the jack or connector “J” number on an
interconnect cable or the jack or connector “J” number on the board when the cable is
within a tray.
4 3 2
Marker Identification Drawing
Safety
The Innovator CHV400BTD ATSC Transmitter systems manufactured by Axcera are
designed to be easy to use and repair while providing protection from electrical and
mechanical hazards. Please review the following warnings and familiarize yourself with
the operation and servicing procedures before working on the system.
Hazardous Accessibility – Axcera has made attempts to provide appropriate
connectors, wiring and shields to minimize hazardous accessibility.
Circuit Breakers and Wiring – All circuit breakers and wire are UL and CE certified and
are rated for maximum operating conditions.

Innovator CHV400BTD ATSC Transmitter Introduction
Technical Manual, Rev 0 2
Single Point Breaker or Disconnect - The customer should provide a single point
breaker or disconnect at the breaker box for the main AC input connection to the
transmitter.
Trans itter Ratings - The transmitter ratings are provided in the text of this manual
along with voltage and current values for the equipment.
Protective Earthing Ter inal – A main protective earthing terminal is provided for
equipment required to have protective earthing.
Read All safety Instructions – All of the safety instructions should be read and
understood before operating this equipment.
Retain Manuals – The manuals for the system should be retained at the system site for
future reference. Axcera provides two manuals for this purpose; one manual can be left
at the office while the other 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 Operating Instructions – All of the operating and use instructions for the
system should be followed.
Cleaning – Unplug or otherwise disconnect all power from the equipment before cleaning.
Do not use liquid or aerosol cleaners. Use only a damp cloth for cleaning.
Ventilation – Openings in the cabinet and module front panels are provided for
ventilation. To ensure the reliable operation of the system, and to protect the unit from
overheating, these openings must not be blocked.
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.
Replace ent Parts – When replacement parts are used, 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.

Innovator CHV400BTD ATSC Transmitter Introduction
Technical Manual, Rev 0 3
Contact Infor ation
The Axcera Field Service Department can be contacted by PHONE at 724-873-8100 or by
FAX at 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.
. What are your Name and the Call Letters for the station?
2. What are the model number and type of system?
3. Is the system digital or analog?
4. How long has the system been on the air? (Approximately when was the system
installed?)
5. What are the symptoms being exhibited by the system? Include the current front
panel LCD readings and what the status LED is indicating on the front panel of
the tray. If possible, include the LCD readings before the problem occurred.
Return Material 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#). The RMA# can be obtained from any Axcera Field
Service Engineer by contacting the Axcera Field Service Department at 724-873-8 00 or
by Fax at 724-873-8 05. This procedure applies to all items sent to the Field Service
Department regardless of whether the item was originally manufactured by Axcera.
When equipment is sent to the field on loan, the 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 the 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 exchanged assembly.
When shipping an item to Axcera, please include the RMA# on the packing list and on the
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, LLC
103 Freedo Drive
P.O. Box 525
Lawrence, PA 15055-0525 USA
For more information concerning this procedure, call the Axcera Field Service Department
at 724-873-8 00.
Axcera can also be contacted through e-mail at [e-mail] and on the Web at
www.axcera.co .

Innovator CHV400BTD ATSC Transmitter Introduction
Technical Manual, Rev 0 4
Li ited 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 ( ) 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,
bulbs or LEDs.
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 CHV400BTD ATSC Transmitter Introduction
Technical Manual, Rev 0 5


 WARNING!!!


 HIGH VOLTAGE 


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 OR THE ANTENNA
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 CHV400BTD ATSC Transmitter Introduction
Technical Manual, Rev 0 6
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
. 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.