UBS Axcera CU150BTD 150-Watt UHF Digital Transmitter User Manual 4

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Technical Manual
Innovator,
CU5-500BTD/BRD,
ATSC Transmitter/
Regenerative Translator
Axcera, LLC
103 Freedom Drive, P.O. Box 525 Lawrence, PA 15055-0525 USA
PHONE: 1-724-873-8100 • FAX 1-724-873-8105
www.axcera.com • info@axcera.com
Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Table of Contents
Table of Contents
Introduction ......................................................................................................1
Manual Overview ............................................................................................1
Assembly Designators .....................................................................................1
Safety ...........................................................................................................1
Contact Information........................................................................................2
Return Material Procedure ...............................................................................2
Limited One Year Warranty for Axcera Products..................................................3
Unpacking and Installation ................................................................................ 11
Unpacking ................................................................................................... 11
Installation .................................................................................................. 11
Tray Slide Installation ................................................................................ 11
AC Input Connections ....................................................................................... 12
Input and Output Connections ........................................................................... 12
Initial On Site Turn On Procedure....................................................................... 15
Typical System Operating Parameters ................................................................ 16
Typical System Problems, Indications and Causes ................................................ 16
LCD Display and Front Panel LED Indicators ........................................................ 17
Transmitter Remote Connections ....................................................................... 18
LCD Front Panel Screens................................................................................... 20
Operation Screens ........................................................................................ 21
Set Up Screens ............................................................................................ 25
System Description .......................................................................................... 28
(Optional) Innovator CXB Series Web Ethernet Interface ...................................... 30
Circuit Descriptions of Boards in the CU5, CU30, CU50 & CU100 Transmitters ......... 34
(A1) 8 VSB Demodulator Board (1308275) - Only used with BRD operation ......... 34
Overview.................................................................................................. 34
Microcontroller Functions............................................................................ 34
Jumper and DIP Switch Settings.................................................................. 34
(A2) Digital Modulator Board (1304883) .......................................................... 34
SMPTE-310 Input ...................................................................................... 34
Channel Coder .......................................................................................... 35
Analog Output Section ............................................................................... 35
Pilot Frequency Generation......................................................................... 35
Voltage Requirements................................................................................ 35
(A3) IF Pre-Corrector Board (1308796) ........................................................... 36
Pin-Diode Attenuator Circuit ........................................................................ 36
In Phase and Quadrature Corrector Circuits .................................................. 37
Frequency Response Corrector Circuit .......................................................... 38
ALC Circuit ............................................................................................... 38
Input Fault and Modulation Fault Circuitry .................................................... 39
±12 VDC, +6.8 VDC, and VREF needed to Operate the Board ......................... 39
(A4) Frequency Agile Upconverter Board (1309695) ......................................... 40
(A5) ALC Board, Innovator CX Series (1308570) .............................................. 41
(A6) Amplifier Assembly (1309621) – Used in the CU5 ...................................... 42
(A6-A1) 2 Stage UHF Amplifier Board, 24V (1309608) ................................... 42
(A6) Amplifier Assembly (1312797) – Used in the CU30, 50, 250 & 500 .............. 43
(A6-A1) 2 Stage UHF Amplifier Board (1308784) .......................................... 43
(A6-A2) RF Module Pallet w/Philips Transistors (1300116).............................. 43
(A6) Amplifier Assembly (1312827) – Used in the CU100 & CU125 ..................... 44
(A6-A1) 1 Watt UHF Amplifier Module (1311170) .......................................... 44
(A6-A2) BL871 Single Stage Amplifier Board (1311041)................................. 44
Technical Manual, Rev. 0
6/15/09
Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Table of Contents
(A6-A3) Dual 878 Pallet Assembly (1310138) ............................................... 44
(A7) Output Detector Board (1308685 or 1312207 in the CU100BTD/BRD).......... 45
(A8) Control Card, Innovator CX (1312543) ..................................................... 45
(A9 & A10) Power Supplies used in CU5, CU30, CU50 & CU100 and Driver for
CU250 & CU500 ........................................................................................... 46
Circuit Descriptions of Boards in the CU250, 250 Watt and CU500, 500 Watt ATSC
Amplifier Trays ................................................................................................ 47
(A5) Amplifier Control Board (1309822) .......................................................... 47
(A4) 125 Watt Amplifier Heatsink Assembly (1310161) used in the CU125 .......... 47
(A4) 250 Watt Amplifier Heatsink Assembly (1308921) used in the CU250 .......... 47
2 Way Splitter Board (1308933) (Part of 250 Watt Amplifier Heatsink.............. 47
LDMOS Amplifier Pallets (1308690) (Used in both Amplifier Heatsink Assemblies)
............................................................................................................... 47
2 Way Combiner Board (1309804) (Part of 250 Watt Amplifier Heatsink .......... 48
(A1 & A2) 125 Watt and 250 Watt Amplifier Tray Power Supplies .................... 48
(Optional) ASI to S310 Converter Module ........................................................... 49
ASI Motherboard (1311179) ....................................................................... 49
ASI to 310 Conversion Board, Non-SFN (1311219) ......................................... 49
System Set Up Procedure ................................................................................. 50
Set Up of the LO1 and LO2 Samples on Upconverter Board ................................ 50
Set Up of the IF Precorrector Board in the Transmitter ...................................... 51
ALC Board Set-Up, Forward and Reflected Power Calibration for CU5, CU30, CU50
and CU100 Systems...................................................................................... 52
Forward and Reflected Power Calibration of CU250 and CU500 Systems .............. 53
Linearity Correction Adjustment (Non-Linear Distortions) .................................. 54
Linearity Correction Adjustment (Linear Distortions) ......................................... 55
APPENDIX A .........................................................................................................1
Innovator CXB Series Transmitter System ................................................................1
Drawing List .........................................................................................................1
APPENDIX B .........................................................................................................1
Innovator CXB Series Transmitter ...........................................................................1
Subassemblies & Boards Drawing List ......................................................................1
Technical Manual, Rev. 0
ii
6/15/09
Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Introduction
Introduction
Manual Overview
This manual contains the description of the Innovator CU5-500BTD/BRD ATSC
Transmitter/Regenerative Translator and the circuit descriptions of the boards, which
make up the transmitter. The manual also describes the installation, setup and
alignment procedures for the transmitter. Appendix A of this manual contains the
system level drawings for the Innovator CU5-500BTD/BRD ATSC
Transmitter/Regenerative Translator. NOTE: Information and drawings on the Axciter, if
part of your system, are contained in the separate Axciter Instruction Manual.
Assembly Designators
Axcera has assigned assembly numbers, Ax designations such as A1, 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 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 Brady markers. Figure 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 furthest from the
connector. If there are four Brady Markers, this marker is the transmitter number such
as transmitter 1 or translator 2. The next or the furthest 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: Brady Marker Identification
Drawing
Safety
The Innovator CU5-500BTD/BRD ATSC Transmitter/Regenerative Translator 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
transmitter system.
Read All safety Instructions – All of the safety instructions should be read and
understood before operating this equipment.
Retain Manuals – The manuals for the transmitter should be retained at the transmitter
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.
Technical Manual, Rev. 0
Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Introduction
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
transmitter 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 transmitter, 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.
Replacement 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.
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.
2.
3.
4.
What are your Name and the Call Letters for the station?
What are the model number and type of transmitter?
Is the transmitter digital or analog?
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
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 1-724-873-8100
or by fax at 1-724-873-8105. This procedure applies to all items sent to the Field
Service Department regardless of whether the item was originally manufactured by
Axcera.
Technical Manual, Rev. 0
Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Introduction
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 Freedom Drive
P.O. Box 525
Lawrence, PA 15055-0525 USA
For more information concerning this procedure, call the Axcera Field Service Department
at 1-724-873-8100.
Axcera can also be contacted through e-mail at info@axcera.com and on the Web at
www.axcera.com.
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,
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.
Technical Manual, Rev. 0
Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Introduction

 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 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.
Technical Manual, Rev. 0
Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Introduction
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.
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.
SKIN BLISTERED OR FLESH CHARRED:
Apply ice cold water to burned area to
prevent burn from going deeper into skin
tissue.
Technical Manual, Rev. 0
Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Introduction
dBm, dBw, dBmV, dBµ
µV, & VOLTAGE
EXPRESSED IN WATTS
50 Ohm System
WATTS
1,000,000,000,000
100,000,000,000
10,000,000,000
1,000,000,000
100,000,000
10,000,000
1,000,000
100,000
10,000
1,000
100
50
20
10
0.1
0.01
0.001
0.0001
0.00001
0.000001
0.0000001
0.00000001
0.000000001
0.0000000001
0.00000000001
0.000000000001
PREFIX
1 TERAWATT
100 GIGAWATTS
10 GIGAWATTS
1 GIGAWATT
100 MEGAWATTS
10 MEGAWATTS
1 MEGAWATT
100 KILOWATTS
10 KILOWATTS
1 KILOWATT
1 HECTROWATT
1 DECAWATT
1 WATT
1 DECIWATT
1 CENTIWATT
1 MILLIWATT
100 MICROWATTS
10 MICROWATTS
1 MICROWATT
100 NANOWATTS
10 NANOWATTS
1 NANOWATT
100 PICOWATTS
10 PICOWATTS
1 PICOWATT
dBm
+150
+140
+130
+120
+110
+100
+ 90
+ 80
+ 70
+ 60
+ 50
+ 47
+ 43
+ 40
+ 30
+ 20
+ 10
- 10
- 20
- 30
- 40
- 50
- 60
- 70
- 80
- 90
dBw
+120
+110
+100
+ 99
+ 80
+ 70
+ 60
+ 50
+ 40
+ 30
+ 20
+ 17
+ 13
+ 10
- 10
- 20
- 30
- 40
- 50
- 60
- 70
- 80
- 90
-100
-110
-120
dBmV
dBµV
VOLTAGE
+137
+127
+117
+107
7.07V
2.24V
0.707V
224mV
TEMPERATURE CONVERSION
°F = 32 + [(9/5) °C]
°C = [(5/9) (°°F - 32)]
Technical Manual, Rev. 0
77
67
57
47
Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Introduction
USEFUL CONVERSION FACTORS
TO CONVERT FROM
TO
MULTIPLY BY
mile (US statute)
kilometer (km)
inch (in)
millimeter (mm)
inch (in)
centimeter (cm)
inch (in)
meter (m)
foot (ft)
meter (m)
yard (yd)
meter (m)
mile per hour (mph)
kilometer per hour(km/hr)
mile per hour (mph)
meter per second (m/s)
pound (lb)
kilogram (kg)
gallon (gal)
liter
U.S. liquid
(One U.S. gallon equals 0.8327 Canadian gallon)
fluid ounce (fl oz)
milliliters (ml)
British Thermal Unit
watt (W)
horsepower (hp)
watt (W)
1.609347
25.4
2.54
0.0254
0.3048
0.9144
1.60934
0.44704
0.4535924
3.7854118
29.57353
0.2930711
per hour (Btu/hr)
746
NOMENCLATURE OF FREQUENCY BANDS
FREQUENCY RANGE
DESIGNATION
3 to 30 kHz
30 to 300 kHz
300 to 3000 kHz
3 to 30 MHz
30 to 300 MHz
300 to 3000 MHz
3 to 30 GHz
30 to 300 GHz
VLF
LF
MF
HF
VHF
UHF
SHF
EHF
Very Low Frequency
Low Frequency
Medium Frequency
High Frequency
Very High Frequency
Ultrahigh Frequency
Superhigh Frequency
Extremely High Frequency
LETTER DESIGNATIONS FOR UPPER FREQUENCY BANDS
LETTER
FREQ. BAND
Ku
Ka
Technical Manual, Rev. 0
1000 - 2000 MHz
2000 - 4000 MHz
4000 - 8000 MHz
8000 - 12000 MHz
12 - 18 GHz
18 - 27 GHz
27 - 40 GHz
40 - 75 GHz
75 - 110 GHz
Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Introduction
RETURN LOSS VS. VSWR
-10
-20
-30
dB
-40
-50
-60
-70
1.001
1.01
1.1
VSWR
Technical Manual, Rev. 0
2.0
Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Introduction
ABBREVIATIONS/ACRONYMS
AC
Alternating Current
dBmV
AFC
Automatic Frequency
Control
dBw
Decibel referenced to
1 millivolt
Decibel referenced to 1 watt
FEC
Forward Error Correction
ALC
Automatic Level Control
FM
Frequency modulation
AM
Amplitude modulation
FPGA
AGC
Automatic Gain Control
Field Programmable Gate
Array
ARD
A-line, Regenerative
Translator, Digital
Hz
Hertz
ICPM
ATD
A-line, Transmitter,
Digital
Incidental Carrier Phase
Modulation
I/P
Input
ATSC
Advanced Television
Systems Committee (Digital)
IF
Intermediate Frequency
AWG
American wire gauge
LED
Light emitting diode
BER
Bit Error Rate
LSB
Lower Sideband
BRD
B-line, Regenerative
Translator, Digital
LDMOS Lateral Diffused Metal Oxide
Semiconductor Field Effect
Transistor
BTD
B-line, Transmitter,
Digital
BW
MPEG
Motion Pictures Expert
Group
Bandwidth
NTSC
COFDM Coded Orthogonal Frequency
Division Multiplexing
modulation scheme
National Television
Systems Committee (Analog)
O/P
Output
DC
Direct Current
PLL
Phase Locked Loop
D/A
Digital to analog
PCB
Printed circuit board
DSP
Digital Signal Processing
QAM
Quadrature Amplitude
Modulation
DTV
Digital Television
dB
Decibel
dBm
Decibel referenced to
1 milliwatt
Technical Manual, Rev. 0
SMPTE Society of Motion Picture
and Television Engineers
VSB
Vestigial Side Band
Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
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Technical Manual, Rev. 0
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Introduction
Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Unpacking and Installation
Unpacking and Installation
Unpacking
Axcera certifies that upon leaving our facility all equipment was undamaged and in
proper working order. It is imperative that all packages be inspected immediately upon
arrival to verify that no damage occurred in transit to the site. Inspect all packages for
exterior damage and make note of any dents, broken seals, or other indications of
improper handling. Carefully open each package and inspect the contents for damage.
Verify that all materials are enclosed as listed on the packing slip. Report any shortages
to Axcera. In the event any in transit damage is discovered report it to the carrier.
Axcera is not responsible for damage caused by the carrier. If the equipment is not
going to be installed immediately, return all items to their original packaging for safe
storage. Save all packing material for future use. If equipment is ever removed from
the site, the original packaging will ensure its safe transport.
Installation
The Innovator CXB Series transmitters are designed for simple installation. Expensive
test equipment is not required for installation and set up and to keep a system
operational. Prior to installing the product, review the following items. Check that they
been installed, tested and/or inspected.
Building Structure
Electrical Systems
Heating and Air Conditioning
Receive Antenna or Satellite Dish and input cabling
Optional ASI to S310 Converter if needed
Transmit Antenna and output transmission line
The Innovator CXB Series transmitters are 17” wide standard rack mountable trays.
They are supplied with side mounted Tray Slides for ease of installation and removal.
The CU5, CU30, CU50 & CU100 transmitters are 3 RU, 5.25”, high. The CU250 and
CU500 transmitters are 7 RU, 12.25”, high which is 3 RU, 5.25”, for the CU30 driver and
4 RU, 7”, for the Innovator CXB Series amplifier tray. Also needed for FCC compliance
operation is an ATSC filter on the broadcast channel that connects to the output of the
CU5 thru CU500 transmitters. Space must be provided for the ATSC filter whose
dimensions will vary depending on manufacturer and channel. Refer to vendor supplied
information included with your ATSC filter for specific dimensions. In the CU250 and
CU500 transmitters, a low pass filter is connected between the amplifier tray and the
ATSC mask filter. Space must be provided for the low pass filter whose dimensions will
vary depending on manufacturer and channel. Refer to vendor supplied information
included with your low pass filter for specific dimensions. Make sure that the space
provided for the CX Series equipment is sufficient and includes the external filters.
Check that any additional equipment that is included in the system, which extends
above or to the side of the mounting rack, has sufficient clearance space. Refer to the
custom racking plan for the system, if prepared, for detailed information.
Tray Slide Installation
If the transmitter is pre-mounted in a cabinet skip this section. Locate the tray slides
included in the installation material for your system. See Figure 3-1 and the
manufacturers instructions, included with the tray slides, for the cabinet mounting
instructions for the tray slides. Install the left tray slide into the left side of the cabinet (as
Technical Manual, Rev. 0
11
Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Unpacking and Installation
viewed from the rear). Allow 3 RU, 5.25”, of space between the trays for a CU5, 30, 50 or
100 transmitter. Allow a space of 7 RU, 12.25”, which is 3 RU, 5.25”, for the CU30 driver
and 4 RU, 7”, for the Innovator CXB Series amplifier tray. Space must also be provided
for the ATSC filter and low pass filter, if present, whose dimensions will vary depending
on manufacturer and channel. Secure the left tray slide by connecting it to the front and
rear mounting bars using No. 10 screws and the bar nuts that have been provided. Install
the tray slide on the right side of the cabinet (as viewed from the rear) making sure that it
is aligned with the tray slide on the left side. Secure the slide by connecting it to the front
and rear mounting bars using No. 10 screws and the bar nuts that have been provided.
Repeat this process for any other trays if purchased. With both slides in place, slide the
tray or trays into the cabinet.
Figure 2: Chassis Trak Cabinet Slides
AC Input Connections
Refer to Figures 3 and 4 that follow for location of the jacks and connectors of the
transmitter. The CU5, CU30, CU50 and CU100 transmitters will operate with an input
voltage of 85-264VAC. Check that the AC switch, located on the rear of the tray above
the AC power jack, is OFF. Connect the AC power cord supplied with the tray from J6 on
the rear of the tray to the AC source. If your system has the optional ASI to S310
Converter, check that it is connected to the AC source.
If your system is a CU250 or a CU500, it also contains a 250 Watt or 500 Watt amplifier
tray. The 250 Watt or 500 Watt amplifier tray is configured for 230 VAC operation only.
Check that the ON/OFF circuit breaker, located on the rear panel under the AC power
jack, is OFF. Connect the AC power cord supplied with the tray from J10 on the rear of
the tray to the 230 VAC source.
Input and Output Connections
The input and output connections to the transmitter are made to the jacks mounted on
the rear of the CU5 thru CU100 transmitters, the drivers for the CU250 and CU500, and
to the 250 Watt and 500 Watt amplifier trays. The CU5 thru CU100 transmitters, the
drivers for the CU250 and CU500 accept an On Channel RF signal (BRD) or a SMPTE-310
(BTD) input and output a digital RF ON Channel signal. Refer to Figure 3 and to Table 1
that follow for the locations and information on the jacks and connectors.
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Innovator CU5-500BTD/BRD ATSC Transmitter/
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J12
J9
J11
Unpacking and Installation
J1
J2
J6
J8
J13
J6
J10
Figure 3: Rear View CU5 thru CU100 and the driver for the CU250 & CU500
Table 1: Connections for the CU5 thru CU100 and the driver for the CU250 & CU500
Port
Type
Function
Impedance
Input A: On Channel RF Input (BRD) –78 to –8 dBm or
J1
BNC
50 Ohms
SMPTE-310 Input (BTD)
Input B: On Channel RF Input (BRD) –78 to –8 dBm or
J2
BNC
50 Ohms
SMPTE-310 Input (BTD)
J6
BNC
10 MHz Input: Optional External 10 MHz Reference Input
50 Ohms
J7
BNC
1 PPS Input: Optional External 1 PPS Reference Input
50 Ohms
J9
RF Output: On Channel RF Output
50 Ohms
AC Input: AC input connection to 85-264VAC Source and
J10
IEC
N/A
On/Off circuit breaker
External Amplifier: Interface to System and external
amplifier trays, if present. Also provides two interlocks,
9 Pos
one for RF System and one for Reject Load. If the
J11
N/A
Male D
interlocks are not used, jumpers from J11-5 to J11-9,
ground, for RF system Interlock and from J11-6 to J11-9
are needed to allow the transmitter to go to operate.
15 Pos
J12
Remote: Remote control and status indications
N/A
Female D
Serial: Provides communication to System and to external
J13
RJ-45
N/A
amplifier trays, if present.
Ethernet: Optional Ethernet connection. May not be
J14
RJ-45
N/A
present in your tray.
J15
Front
Panel
J16
Front
Panel
BNC
9 Pos
Female D
RF Sample: Output Sample from Output Detector Board.
In a CU50, the sample level at J15 is approximately 60dB
down from the output power level of the tray.
Serial: Used to load equalizer taps into the modulator.
50 Ohms
N/A
If your CX BTD system contains an Optional ASI to S310 Converter, connect the ASI
output of the STL to the ASI in jack on the rear panel of the converter. Connect the
SMPTE-310 Output from the SMPTE 310 Out jack on the rear panel of the converter
module to the input jack J1 on the rear panel of the CU5 thru CU100 Tray and the Driver
Tray for the CU250 & CU500.
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Innovator CU5-500BTD/BRD ATSC Transmitter/
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Unpacking and Installation
J4
J2
J1
J6
CB1
Figure 4: Rear View CU250 and CU500 Amplifier Tray
Table 2: Connections for the CU250 and CU500 Amplifier Tray
Port
Type
Function
J1
RF Input: On Channel RF from CU driver tray
J2
RF Output: On Channel RF Output
I/F Remote: Amplifier Control Interface
J4
25 Pos D
(Connects to J11 on the driver tray)
J6
IEC
AC Input: AC input connection to 230VAC Source
J8
RF Sample: Output Sample from 2 Way Combiner Board
BNC
Front
In a CU500, the sample level is approximately 65dB down
Panel
from the output power level of the tray.
Impedance
50Ω
50Ω
N/A
N/A
50Ω
Refer to Figures 3 and 4, and Tables 1 and 2 for detailed information on the jacks and
connectors. Connect the On Channel RF Input (BRD), –78 to –8 dBm, or the SMPTE-310
Input (BTD), to the 50Ω BNC input jack J1, located on the rear panel of the CU5 thru
CU100 transmitters and the driver trays for the CU250 and CU500.
If used, connect the external 10 MHz reference input to the 50Ω BNC 10 MHz input jack
J6 located on the rear panel of the CU5 thru CU100 transmitters and the drivers for the
CU250 and CU500. This input is only needed if precise output frequency is required. If
used, connect the external 1 PPS reference input to the 50Ω BNC 1 PPS input jack J7
located on the rear panel of the CU5 thru CU100 transmitters and the drivers for the
CU250 and CU500. This input is only needed if precise output frequency is required.
The digital RF ON Channel output of the CU5 thru CU100 transmitters and the driver
trays is at J9 the 50Ω “N” connector RF output jack located on the rear panel. In the
CU5 thru CU100 transmitter systems, the output of the tray at J9 connects to the digital
mask filter and then to the antenna for your system. In CU250 and CU500 transmitter
systems, the output of the driver tray at J9 is connected to J1 the 50 Ohm “N” connector
RF input jack located on the rear panel of the 250 Watt or 500 Watt amplifier tray.
Check that the amplifier control interface cable is connected from J11 the 9 position “D”
connector located on the rear panel of the driver tray to J4 the 25 position “D” connector
located on the rear panel of the 250 Watt or 500 Watt amplifier tray. This cable
provides the control, status and operating parameters of the amplifier tray to the driver
tray. The digital RF ON Channel output of the amplifier tray is at J2 the 50Ω “N”
connector RF output jack located on the rear panel that connects to the low pass filter,
the digital mask filter and then to the antenna for your system.
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Innovator CU5-500BTD/BRD ATSC Transmitter/
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Initial On Site
Turn On Procedure
Initial On Site Turn On Procedure
After the Innovator CXB Series tray or trays are installed and all input, output and AC
connections are made, the system is ready for the initial site turn on. Check that the output
of the CU5, CU30, CU50 or CU100 tray is connected to an appropriate rated load or to the
digital mask filter and the antenna for your system. If your system is a CU250 or CU500
transmitter system, check that the output of the amplifier tray is connected to an appropriate
rated load or to the low pass filter, the digital mask filter and the antenna for your system.
Check that the main AC power to the System is ON.
If you have a CU5, CU30, CU50 or CU100 system, push ON the switch located on the rear of
the tray above the AC power jack. The large fan on the rear of the tray should operate. If
your system is a CU250 or CU500 system, switch ON the ON/OFF circuit breaker located on
the rear of the amplifier tray below the AC power jack. The two fans on the rear of the
amplifier tray should operate.
The Operate/Standby LED and Status LEDs on the CU5, CU30, CU50 or CU100 should be Green
indicating the system is in Operate and performing normally. The Operate/Standby LED
showing Amber indicates the System is in Standby. The Status LED showing a blinking Red LED
indicates a Fault is occurring now. The Status LED showing Amber indicates that a Fault
occurred since that last time the Fault indications were reset.
If your system is a CU250 or CU500 system, the Enable LED and Status LEDs on the 250 or
500 Watt Amplifier Tray should be Green indicating the system is in Operate and performing
normally. The Enable LED showing Amber indicates the System is in Standby. The Status LED
should be Green indicating no faults in system. If the Operate/Standby LED shows Amber it
indicates that the System is in Standby. If the Status LED is blinking Red it indicates a Fault is
occurring now. If the Status LED shows Amber it indicates that a Fault occurred since that last
time the Fault indications were reset. The output power is factory set according to customer
request and does not need adjusted. If a problem occurs, call field support for information on
modifying the power level of the transmitter.
NOTE: The RF System Interlock and Reject Load Interlocks are provided on J11, a 9 Pos Male
D connector, located on the rear panel of the CU5, CU30, CU50 or CU100 tray. The RF
System Interlock at J11-5 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 place the transmitter in Standby if the
protection circuit opens. The Reject Load Interlock at J11-6 provides the customer
with a means of connecting the transmitter to protection circuits, for the reject load in
multiple amplifier systems, which will place the transmitter in Standby if the protection
circuit opens. If the interlocks are not used in your system, a plug with a jumper from
J11-5 to J11-9, ground, for RF system Interlock and from J11-6 to J11-9, for Reject
Load Interlock, need to be connected to J11, the 9 position “D” connector, located on
the rear panel of the CU5, CU30, CU50 or CU100 tray. These jumpers provide the RF
System and Reject Load Interlocks, which allow the transmitter to go to operate.
Without the jumpers, the transmitter will remain in Standby.
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Innovator CU5-500BTD/BRD ATSC Transmitter/
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Initial On Site
Turn On Procedure
Typical System Operating Parameters
Typical Operating Parameters for a CU5, CU30, CU50 or CU100
Parameter
Typical Reading
Forward Power
100%
Reflected Power
<5%
Power Supply Voltage
30 Volts
Heatsink Temperature
20º to 30º F above ambient temperature
Pin Attenuator Voltage
1 Volt to 5 Volts
Typical Operating Parameters for a CU30 used as a Driver
Parameter
Typical Reading
Forward Power
20-70%
Reflected Power
<3%
Power Supply Voltage
30 Volts
Heatsink Temperature
20º to 30º F above ambient temperature
Pin Attenuator Voltage
1 Volt to 5 Volts
Typical Operating Parameters for the external Amplifier Tray
in a CU250 or CU500 System
Parameter
Typical Reading
Forward Power
100%
Reflected Power
<5%
Power Supply Voltage
30 Volts
Heatsink Temperature
20º to 30º F above ambient temperature
Typical System Problems, Indications and Causes
Problem
Indication
No power to
tray
Operate/Standby and Enable LED
indicators and LCD display are Off
Loss of Input
Signal
Input Fault on Demodulator Screen
in BRD systems.
MPEG Loss on Modulator Menu in
BTD systems
Loss of
Output
Signal
Loss of
or 32V
Loss of
or 5V
NOTE:
Cause
AC power cord not connected.
Main AC to System missing.
On/Off switch on back of tray
Off. 10 Amp fuse (F1) blown.
Switching power supply (A9)
not operating
Loss of input signal from
antenna.
Any Fault that Mutes the
output. Including Input Fault,
VSWR Cutback, Overdrive,
Blinking Red Status LED.
Overtemperature and
Overvoltage.
24V
Power Supply Fault on Power
Switching power supply (A10)
Supply Menu
not operating
12V
Operate/Standby and Enable LED
Switching power supply (A9)
indicators and LCD display are Off
not operating
A spare 10 Amp fuse is provided in the blank fuse holder under the active
fuse.
Amber Operate/Standby LED.
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Innovator CU5-500BTD/BRD ATSC Transmitter/
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Initial On Site
Turn On Procedure
If there is an occurring fault in the system, the Status LED on the front panel will flash RED as
long as the fault is present. In addition, the menu will jump to the current fault on the
display and blink this fault continuously, if the Jump to Fault screen is set to Yes. When the
fault goes away, the tray will turn the Status LED to AMBER to indicate that there was a fault
and the menu will still display the fault but it will not flash. This allows the user to know that
there was a fault and what type of fault occurred. Before clearing the fault, check if there
were multiple faults, by stepping through the menus to see if there were other faults. To
reset the indication of previous faults, the user must push the Enter button with the Fault
Reset Screen displayed. This will reset all previous Faults.
LCD Display and Front Panel LED Indicators
Status LED
LCD Display Left/Right Buttons
Operate/Standby
LED
Up/Down Buttons
Enter Button
J11 Serial Port
Operate/Standby
Buttons
J15 RF Sample
Figure 5: Front View CU5 thru CU100 transmitters and the driver for the CU250 & CU500
Table 3: Innovator CXB Series LCD Display
DISPLAY
FUNCTION
Provides a two-line readout of the input received channel, internal
LCD
functions, status, and fault conditions.
The front panel has seven pushbuttons, two for the control of the transmitter, Operate &
Standby, and five for control of the displayed menus, Left, Right, Up, Down & Enter.
Table 4: Innovator CXB Series Control Pushbuttons
PUSHBUTTON
FUNCTION
OPR
When pushed switches the transmitter to Operate.
STBY
When pushed switches the transmitter to Standby.
ENTER
Selects the changes made in the menus and submenus.
Scrolls through the main menus (NOTE: Push in and hold the left
Left & Right Arrow
and right arrow buttons together to access the set up menus)
Up & Down Arrow
Steps through submenus of the main menu when they are present.
Table 5: Innovator CXB Series Operate/Standby and Status Indicators
LED
FUNCTION
OPERATE/STANDBY
A Green LED indicates that the system is in Operate. An Amber
(Green/Amber)
LED indicates that the system is in Standby.
A Green LED indicates that the system is functioning normally. A
STATUS
flashing Red LED indicates a fault is occurring at this time. An
(Green/Red/
Amber LED indicates a fault occurred since the last time the fault
Amber)
indications were reset but the system is now operating normally.
NOTE: J15 is a Front Panel BNC RF Sample Jack 50Ω that provides an RF output sample from
the output coupler board in the tray. In a CU50, the sample level at J15 is
approximately 60dB down from the output power level of the tray.
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Transmitter Remote Connections
Initial On Site
Turn On Procedure
J12
Figure 7: Rear View CU5 thru CU100 and the Driver for the CU250 & CU500
The remote connections for the Innovator CXB Series transmitter are made to the Remote 15
Pos Female “D” connector Jack J12 located on the rear panel of the tray.
Table 7: Remote Connections to J12, 15 Pos Female D Connector, for CX Series transmitter
Pin
Signal Name
Signal Type
Description
Designations
Discrete Open Collector Input - A pull
RMT
down to ground on this line indicates
Transmitter
J12-1
Command
that the Transmitter is to be placed into
Operate
the operate mode.
Discrete Open Collector Input - A pull
RMT
down to ground on this line indicates
Transmitter
J12-2
Command
that the Transmitter is to be placed into
Standby
the standby mode.
Discrete Open Collector Input - A pull
down to ground on this line indicates
RMT Power Raise
J12-3
Command
that the Power of the Transmitter is to
be Raised.
Discrete Open Collector Input - A pull
RMT Power
down to ground on this line indicates
J12-4
Command
Lower
that the Power of the Transmitter is to
be Lowered.
Spare RMT Input
J12-5
For future use
Discrete Open Collector Input - A pull
RMT Set to
down to ground on this line indicates
J12-6
Command
Modulation Type
that the Modulation type is set to
Analog, or floating sets to Digital.
Discrete Open Collector Input - A pull
down to ground on this line indicates
RMT Set Channel
J12-7
Command
that the Channel is set to Channel 2, or
floating sets to Channel 1.
RMT Ground
J12-8
Ground
Analog Output - 0 to 4.0 V- This is a
RMT
buffered loop through of the calibrated
System Forward
J12-9
“System Forward Power”. Indicates the
Metering
Power Level
Transmitter Forward power. Scale factor
is 100 % / 3.2V.
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Innovator CU5-500BTD/BRD ATSC Transmitter/
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Signal Name
Pin
Designations
RMT
System Aural
Power Level
J12-10
RMT
System Reflected
Power Level
J12-11
RMT
Input Status
J12-12
RMT
Fault Status
J12-13
RMT
Operate Status
J12-14
RMT Ground
J12-15
Technical Manual, Rev. 0
Initial On Site
Turn On Procedure
Signal Type
Analog Output - 0 to 4.0 V- This is a
buffered loop through of the calibrated
“System Aural Power”. Indicates the
Transmitter Aural power. Scale factor is
100 % / 3.2V. (Not used in Digital)
Analog Output - 0 to 4.0 V- This is a
buffered loop through of the calibrated
“System Reflected Power”. Indicates
the Transmitter Reflected power. Scale
factor is 100 % / 3.2V.
Discrete Open Collector Output - A low
indicates that the Input to the
Transmitter is OK. Floating indicates an
Input Fault.
Discrete Open Collector Output - A low
indicates that the Transmitter is OK.
Floating indicates a Fault has occurred.
Discrete Open Collector Output - A low
indicates that the Transmitter is in
Standby. Floating indicates the
Transmitter is in Operate.
Ground
19
Description
Metering
Metering
Status
Status
Status
Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Initial On Site
Turn On Procedure
LCD Front Panel Screens
A LCD display located on the front of the Innovator CXB Series transmitters displays, on
screens, the current operating status of the transmitter. When the tray is powered On, the
LCD will display two splash screens. The first splash screen will be displayed, then the second
splash screen will be displayed and finally the FWD Power RFL Power default screen will be
displayed. The FWD RFL default screen will be the screen displayed if no buttons are pushed
to access other screens.
Splash Screen Number 1
The first splash screen displayed indicates the manufacturer and the model.
Splash Screen Number 2
The second splash screen indicates the Firmware and Version Numbers of the software used
in the system. The example shown is Firmware number 1308308 Version number 3.1/1.5.
The final screen is the default screen which indicates the Forward Power and Reflected Power
for the system.
The following screens are scrolled through using the buttons to the right of the display. Pushing
and releasing the Up & Down Arrows will scroll you through the Main Menus, which are shown
on the following pages aligned on the left side of the page. The Submenus of the Main Menus
are accessed by pushing and releasing the ENTER button. Pushing and releasing the Up &
Down Arrows will scroll you through the submenus of the Submenus. The Submenus are
shown on the following pages indented under the Main Menus and the submenus of the
Submenus are indented under the Submenu in which they are contained. In the SET UP
Menus, changes are made to the display by Pushing and releasing the ENTER button which
causes the item to be changed to blink, then using the left and right arrow buttons to display
the desired changed item, finally, pushing the ENTER button will accept the changes made upon
exit of the Set Up Menu.
NOTE: An example of accessing and changing an item using the Set Up Menus is as follows.
This procedure is to set the Off Air Receive Channel to the desired channel. Push and
release the DOWN Arrow button until the TRANSMITTER SET UP Main Menu is
displayed. Push and release the ENTER button. The Authorization Warning screen is
displayed. Push and release the ENTER button again and the ENTER BUTTON SETS TO
CHANGE MODE screen is displayed. Push and release the ENTER button again and the
first set up menu, which is the SET UP CHASSIS VALUES screen is displayed. Push
and release the DOWN Arrow button until the SET UP 8VSB DEMODULATOR screen is
displayed. Push and release the ENTER button to display the submenus under the SET
UP 8VSB DEMODULATOR menu. Push and release the DOWN Arrow until the 8VSB
DEMODULATOR USE OFF AIR CHxx is displayed. Push and release the ENTER button
and the XX, which indicates the Channel Number, will blink. Push and release the UP
or DOWN Arrow button until the new channel number is displayed. Push and release
the ENTER button, and the PUSH ENTER TO ACCEPT CHANGES menu is displayed.
Push and release the ENTER button again to accept the changes made. Push and
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Initial On Site
Turn On Procedure
release the LEFT Arrow to exit to the SET UP 8VSB DEMODULATOR screen. Push and
release the LEFT Arrow again to exit to the TRANSMITTER SET UP Main Menu. Push
and release the UP or DOWN arrows to browse the main menus.
The following screens are typical of an operating transmitter. The values indicated on the
screens in your system may vary from these.
Operation Screens
NOTE: The following Operation screens provide operating information only. No adjustments
are available using these screens.
Table 8: Transmitter Forward Power Screen (BTD)
This is the default screen that is displayed after the splash screens are displayed. This screen
provides an indication of the Output Power of the transmitter in terms of Percent. (Typically
100%). The screen also provides an indication of the Reflected Power of the transmitter in
terms of Percent. (Typically less than 5%). Push the DOWN Arrow to view the next main
menu, which is the Transmitter Fault Log Main Menu.
Table 9: Transmitter Fault Log Main Screen (BTD)
This is the Transmitter Fault Log Main Screen. Push the ENTER button to access the Fault List
submenu. Push the DOWN Arrow to view the next main menu, which is the Transmitter
Details Main Menu.
Table 9.1: Transmitter Fault List Screen (BTD)
If faults are present, they will be displayed on this screen. The above screen indicates
no faults have occurred in the Transmitter. Push the LEFT Arrow to exit to the
Transmitter Fault Log Main Menu screen.
Table 10: Transmitter Details Main Screen (BTD)
This is the Transmitter Details Main Screen. Push the ENTER button to access the Device
Details Chassis Values Main Sub Screen. Push the DOWN Arrow to view the next main menu,
which is the Transmitter Set Up Main Menu.
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Initial On Site
Turn On Procedure
Table 10.1: Transmitter Device Details Chassis Values Screen (BTD)
This is the Transmitter Device Details Chassis Values Main Sub Screen. Push the
ENTER button to access the Device Details Chassis Values submenus. Push the DOWN
Arrow to view the next main submenu, which is the 8VSB Demod Sub Menu.
Table 10.1.1: Transmitter Driver Forward/Reflected Power Details Screen (BTD)
This screen provides an indication of the Output Power of the Driver Tray in
terms of Percent, typically 20-70%. This screen provides an indication of the
Reflected Output Power of the Driver Tray in terms of Percent, Typically less
than 3%.
Table 10.1.2: Heatsink Temperature Details Screen (BTD)
This screen indicates the temperature of the amplifier heatsink assembly,
mounted in the transmitter or driver tray, in degrees Fahrenheit. If the
temperature is below the trip point, it will indicate OK.
(Typically 20º to 30º F. above ambient temperature)
Table 10.1.3: Power Supply Voltage Details Screen (BTD)
This screen shows the power supply voltage in the transmitter or driver tray. If
the power supply voltage is below the trip point, it will indicate OK. (Typically
30V)
Table 10.1.4: External Interlock Details Screen (BTD)
This screen indicates if an external interlock is present in your system.
(Typically Present. Must be present or system will remain in Standby.)
Table 10.1.5: AGC Details Screen (BTD)
This menu indicates if the AGC circuit has an input.
Table 10.1.6: AGC Overdrive Details Screen (BTD)
This menu indicates if the AGC circuit is operating within its range.
Table 10.1.7: AGC Auto/Manual Details Screen (BTD)
This menu indicates if the AGC circuit is operating in Auto or Manual.
Table 10.1.8: ALC Voltage Level Details Screen (BTD)
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Innovator CU5-500BTD/BRD ATSC Transmitter/
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Initial On Site
Turn On Procedure
This menu indicates the Auto ALC voltage setting. (Typically 1 to 5 V)
Table 10.2: Transmitter 8VSB Demodulator Details Screen (BTD)
This is the Transmitter Device Details 8VSB Demodulator Main Sub Screen. Push the
ENTER button to access the Device 8VSB Demodulator submenus. Push the DOWN
Arrow to view the next main menu, which is the Device Details 8VSB Modulator Main
Sub Menu.
Table 10.3: Transmitter 8VSB Modulator Details Screen (BTD)
This is the Transmitter Device Details 8VSB Modulator Main Sub Screen. Push the
ENTER button to access the Device 8VSB Modulator submenus. Push the DOWN Arrow
to view the next main menu, which is the Device Details IF Processor Main Sub Menu.
Table 10.3.1: Transmitter MPEG Input Details Screen (BTD)
This menu indicates if the modulator has locked to the SMPTE-310 signal
coming from the demodulator.
Table 10.3.2: Modulator Phase Lock Loop A Details Screen (BTD)
This menu indicates if the Phase Lock Loop A in the modulator is locked.
Table 10.3.3: Modulator Phase Lock Loop B Details Screen (BTD)
This menu indicates if the Phase Lock Loop B in the modulator is locked.
Table 10.3.4: Modulator Linear Equalization Details Screen (BTD)
This menu indicates if the Linear Equalization is being used.
Table 10.3.5: Modulator Non Linear Equalization Details Screen (BTD)
This menu indicates if the Non Linear Equalization is being used.
Table 10.4: Transmitter IF Precorrector Details Screen (BTD)
This is the Transmitter Device Details IF Precorrector Main Sub Screen. Push the
ENTER button to access the Device IF Processor submenus. Push the DOWN Arrow to
view the next main menu, which is the Device Details Upconverter Main Sub Menu.
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Innovator CU5-500BTD/BRD ATSC Transmitter/
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Initial On Site
Turn On Procedure
Table 10.4.1: IF Precorrector Details Screen (BTD)
This menu indicates if there is an input signal to the IF Precorrector.
Table 10.4.2: IF Precorrector Modulation Present Details Screen (BTD)
This menu indicates if there is Modulation on the signal to the IF Processor.
Table 10.5: Upconverter Device Details Screen (BTD)
This is the Transmitter Device Details Upconverter Main Sub Screen. Push the ENTER
button to access the Device Upconverter submenus. This is the final Device Details
Main Sub Menu. Push the LEFT Arrow to go back the Main Device Details Screen.
Then push the DOWN Arrow to access the Transmitter Set Up Main Menu.
Table 10.5.1: Upconverter Phase Lock Loop 1 Details Screen (BTD)
This menu indicates if the Phase Lock Loop 1 in the upconverter is locked.
Table 10.5.2: Upconverter Phase Lock Loop 2 Details Screen (BTD)
This menu indicates if the Phase Lock Loop 2 in the upconverter is locked.
Table 10.5.3: Upconverter 10 MHz Phase Lock Loop Details Screen (BTD)
This menu indicates if the 10 MHz Phase Lock Loop in the upconverter is locked.
Table 10.5.4: Upconverter 10 MHz Details Screen (BTD)
This menu indicates if the 10 MHz reference used is generated internally or
provided by an external reference source.
Table 10.5.5: Upconverter Transmitter Channel Details Screen (BTD)
The upconverter transmit channel screen indicates the channel that the
upconverter is currently set.
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Initial On Site
Turn On Procedure
Set Up Screens
Table 11: Transmitter Set Up Main Screen (BTD)
This is the Transmitter Set Up Main Screen. Push the ENTER button to access the
Authorization Warning Main Sub Screen. This is the final Main Screen, pushing the DOWN
Arrow will take you back to Transmitter Details Main Menu.
The Set Up item or parameter that can be changed on the displayed sub menu screen, is
indicated by pushing the ENTER button, which causes the changeable item to blink. The UP
or DOWN arrow will change the selection until the desired result is displayed. Pushing the
ENTER Button will accept the change.
Table 11A: Authorized Personnel Screen (BTD)
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 transmitter’s 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.
Pressing the ENTER button will display the Enter Key Sets to Change screen.
Table 11B: Enter Key Sets to Change Mode Screen (BTD)
This screen informs the operator that after changes are made in the Set Up Menus
pushing the enter Key, Button, will accept the changes made. Pushing the ENTER button
will access the first main submenu under the Set Up main menu, which is the Chassis
Values Set Up Menu.
Table 11.1: Chassis Values Main Set Up Menu Screen (BTD)
This is the Transmitter Set Up Chassis Values Main Sub Screen. Push the ENTER
button to access the Chassis Values submenus. Push the DOWN Arrow to view the
next Set Up Main Sub Screen, which is the Set Up 8VSB Demodulator Main Sub
Screen.
Table 11.1.1: Chassis Values Jump to Menu on Fault Set Up Screen (BTD)
This screen allows the user to select if the system will display, automatically
when ON is selected, the screen indicating a faulted condition when it occurs.
Table 11.1.2: Chassis Values Latch On An Input Fault Set Up Screen (BTD)
This screen allows the user to select that the system will latch the input fault if
it occurs, then if the input returns the fault will still register, by selecting ON.
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Innovator CU5-500BTD/BRD ATSC Transmitter/
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Initial On Site
Turn On Procedure
Table 11.1.3: Chassis Values Reset Ethernet User Name Set Up Screen (BTD)
When applicable, this screen is used to reset the username / password file of
the Ethernet controller. If this operation is selected, ON, the username /
password file is erased thus allowing any user to login at administrator level.
Table 11.1.4: Chassis Values Reset Ethernet TCP Configuration Set Up Screen
(BTD)
When applicable, this screen is used to view or change the TCP/IP subnet mask
of the Ethernet controller.
Table 11.2: 8VSB Demodulator Main Set Up Menu Screen (BTD)
This is the Transmitter Set Up 8VSB Demodulator Main Sub Screen. Push the ENTER
button to access the Set Up 8VSB Demodulator submenus. Push the DOWN Arrow to
view the next Set Up Main Sub Screen, which is the Set Up 8VSB Modulator Main Sub
Screen.
Table 11.2.1: 8VSB Demodulator Off Air Channels Set Up Menu Screen (BTD)
This screen allows selection of the channel plan which can be changed to either
Off Air or Cable.
Table 11.2.2: 8VSB Demodulator Channel Select Set Up Menu Screen (BTD)
This screen allows selection of the channel, for the channel plan selected in the
previous screen.
Table 11.3: 8VSB Modulator Main Set Up Menu Screen (BTD)
This is the Transmitter Set Up 8VSB Modulator Main Sub Screen. Push the ENTER
button to access the Set Up 8VSB Modulator submenus. Push the DOWN Arrow to
view the next Set Up Main Sub Screen, which is the Set Up Upconverter Main Sub
Screen.
Table 11.3.1: 8VSB Modulator MPEG Selection Set Up Screen (BTD)
This screen allows the user to select between an internal or external source in
the 8 VSB modulator. During the installation of the system, an off air signal
may not be available to the modulator, therefore the user can set the source to
INTERNAL to generate an 8 VSB signal inside the tray that can be used for set
up. Once the Receive Signal is available, the source must be set to EXTERNAL.
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Initial On Site
Turn On Procedure
Table 11.3.2: 8VSB Modulator Linear Equalization Selection Screen (BTD)
This screen controls the operation of the linear equalizer. When set to ON, the
modulator applies linear correction to the IF output. When set to OFF, no
correction is applied to the IF.
Table 11.3.3: 8VSB Modulator Non Linear Equalization Selection Screen (BTD)
This screen controls the operation of the non linear equalizer. When set to ON,
the modulator applies non linear correction to the IF output. When set to OFF,
no correction is applied to the IF.
Table 11.4: Upconverter Main Set Up Menu Screen (BTD)
This is the Transmitter Set Up Upconverter Main Sub Screen. Push the ENTER button
to access the Set Up Upconverter submenus. This is the final Set Up Main Sub Menu.
Push the LEFT Arrow to go back the Main Transmitter Set Up Screen.
Table 11.4.1: Upconverter Channel Selection Screen (BTD)
The Upconverter, transmit, channel should not be changed, unless the
transmitter is being converted from one channel to another. NOTES: Channel
changes should only be made while the transmitter is in standby. Contact
Axcera Field Service before using this menu.
Table 11.4.2: Upconverter IF Frequency Selection Screen (BTD)
The transmit channel IF Frequency should not be changed, unless the
transmitter is being converted from one digital IF Frequency to another. The IF
Frequency can be changed to 36 MHz or 44 MHz by pushing the Up or Down
Arrow. The IF Frequency for all ATSC transmitters should be 44 MHz. NOTES:
Changes should only be made while the transmitter is in standby. Contact
Axcera Field Service before using this menu.
Table 11.4.3: Upconverter LO Frequency Selection Screen (BTD)
The transmit channel LO Frequency should not be changed, unless the
transmitter is being converted to a new frequency with an Offset. NOTES:
Changes should only be made while the transmitter is in standby. Contact
Axcera Field Service before using this menu.
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Innovator CU5-500BTD/BRD ATSC Transmitter/
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System Description
System Description
The Innovator CXB Series Systems are of two different types. They are either
Regenerative Translators or DTV Transmitters. The Regenerative Translator (BRD)
accepts an RF On Channel signal (-79 to –8 dBm) and converts it to a DTV RF On
Channel output signal. The DTV Transmitter (BTD) takes a SMPTE-310 Input and
converts it to a DTV RF On Channel output signal. The output power level of either
configuration is at 5, 30, 50 or 100 Watts ATSC using a single tray or at 250 or 500
Watts ATSC using an additional amplifier tray. The Innovator CXB Series transmitter
provides linear and nonlinear correction capability for the transmission path as well as
internal test sources that are used during initial transmitter installation.
The Innovator CXB Series Systems are configured as either an ATSC Transmitter,
example: CU100BTD (1312180), or a Regenerative Translator, example: CU100BRD
(1312187). To operate as an ATSC Transmitter, the SMPTE-310 input at (J1) connects
directly to the input jack (J42) on the (A2) Digital Modulator Board (1304883). To
operate as a Regenerative Translator, the DTV ON Channel RF Input at (J1) connects to
the Tuner Input Jack on (A1) the 8 VSB Modulator Board (1308275) supplied with the
kit. The 8 VSB Modulator Board (1308275) converts the DTV input to a SMPTE-310
output at (J13) that connects to the input jack (J42) on the (A2) Digital Modulator Board
(1304883). The rest of the tray operates the same for both the BRD and the BTD
transmitter.
The CU250 ATSC transmitter is made up of a CU30 Tray and a 250 Watt ATSC Amplifier
Tray. The CU30 is used as a driver that connects to the 250 Watt Amplifier tray and
supplies the needed drive level to produce the 250 Watts output of the transmitter. The
control and operating parameters of the 250 Watt Amplifier Tray are displayed on the
LCD Screen on the CU30 Tray.
The CU500 ATSC transmitter is made up of a CU30 Tray and a 500 Watt Amplifier Tray.
The CU30 is used as a driver that connects to the CU500 Amplifier tray and supplies the
needed drive level to produce the 500 Watts output of the transmitter. The control and
operating parameters of the 500 Watt Amplifier Tray are displayed on the LCD Screen on
the CU30 Tray.
The Innovator CXB Series transmitters contain (A2) the Digital Modulator Board
(1304883), (A3) the IF Precorrector Board (1308796), (A4) the Frequency Agile
Upconverter (1309695), (A5) the ALC Board (1308570), (A6) the Amplifier Assembly,
(A7) the Output Detector Board (1308685), (A8) the Innovator CXB Control Board
(1308816), (A9) the +5V, ±12V Power Supply and (A10) the +24V or +32V Power
Supply. The BRD kit (1310182) supplies the (A1) 8 VSB Demodulator Board (1308275)
to the tray to make it a regenerative translator.
The type of (A6) Amplifier Assembly changes as the output power of the transmitter
changes. The Amplifier Assembly (1309621) is used in the 5 Watt transmitter and the
Amplifier Assembly (1312191) is used in the 30, 50, 100, 250 and 500 Watt systems.
The (A10) Power Supply Assembly changes as the output power of the transmitter
changes. The +24V Power Supply is used in the 5 Watt transmitter, the +32V/300W
Power Supply is used in the 30, 250 and 500 Watt systems and the +32V/600W Power
Supply is used in the 50 and 100 Watt transmitter/translator systems.
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Innovator CU5-500BTD/BRD ATSC Transmitter/
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System Description
In an (BRD) system, the 8 VSB signal on any VHF or UHF channel at J1, -8 to -79 dBm,
connects to the tuner input of J1 on the 8 VSB demodulator board. The board
demodulates the signal and supplies a SMPTE-310 output which connects to J42 on the 8
VSB modulator board. In an (BTD) system, the input SMPTE-310 at J1 connects directly
to J42 on the 8 VSB modulator board. The IF output of the 8 VSB modulator board
connects to J2 on the IF pre-corrector board. The IF Pre-Corrector Board provides ALC,
automatic or manual, gain control of the IF level. The board also supplies pre-correction
Response, In Phase and Quadrature Non-Linear adjustments. The board has the
circuitry for ALC Fault, Input Fault and Modulation Fault monitoring and indications. The
IF is connected to the digital upconverter board that takes the 44 MHz or 36 MHz IF
signal and converts it to a TV channel frequency in the range of 54-860 MHz. The RF on
channel signal is fed to the ALC Board, Innovator CXB Series, which is used to control
the RF drive power to the RF amplifier chain in the CU5, CU30, CU50 and CU100
transmitters/Translators. The RF is connected to the (A6) Amplifier Assembly (1308867)
and is made up of (A6-A1) the 2 Stage UHF Amplifier Board, CU30 (1308784) and (A6A2) the RF Module Pallet w/Philips transistors (1300116). The assembly has
approximately 36 dB of gain. The amplified output at approximately +38 dBm connects
to the (A7) Output Detector Board (1308685 or 1312207) which provides forward
(2V=100%) and reflected (2V=100%) power samples to the CU Control Board for
metering and monitoring purposes. An output power sample is also supplied to the front
panel sample jack J15, which is a 50 Ohm BNC type. The typical sample value in a
CU50 is approximately 60dB down from the output power level of the tray. The RF
output is cabled to J2 the RF output jack on the rear panel of the tray. In CU5, CU30,
CU50 and CU100 systems the output connects to a digital mask filter and then the
antenna for your system.
In high power systems, CU250 and CU500, the RF input, from the CU30 driver tray, is
connected to J1 on the rear panel of the amplifier tray. The RF is cabled to J1 on the
Amplifier Heatsink Assembly in the CU250 or CU500 amplifier tray.
In the CU250, the signal at J1 on the amplifier heatsink assembly is fed to J3 on the
LDMOS amplifier pallet. The amplified output of the pallet, which has approximately 15
dB gain, is connected to the coupler board before it is cabled to J2 the RF output jack of
the Amplifier Heatsink Assembly. The coupler board supplies a forward and a reflected
power sample to the amplifier control board for metering and monitoring purposes.
In the CU500, the signal at J1 on the amplifier heatsink assembly is fed to J1 on the 2
Way Splitter Board, which supplies two outputs, one to each LDMOS amplifier pallet.
Each amplifier pallet has approximately 15 dB gain. The amplified outputs of the pallets
are combined in the 2 Way combiner board before it is connected to J2 the RF output
jack of the Amplifier Heatsink Assembly. The 2 way combiner board supplies a forward
and a reflected power sample to the amplifier control board for metering and monitoring
purposes. In a CU500, the typical sample value at J15, a 50 ohm BNC jack located on
the front panel of the tray, is approximately 65dB down from the output power level of
the tray.
The RF output of either amplifier assembly connects to a circulator that provides
protection of the tray in case of a problem in the RF output lines, the filter or the
antenna for your system. The On Channel RF output of the amplifier tray, 250 or 500
Watts ATSC, connects through a low pass filter and a digital mask filter to the antenna
for your system.
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Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Web Ethernet
Interface Description
(Optional) Innovator CXB Series Web Ethernet Interface
The (Optional) Innovator CXB Series Web Ethernet Interface (1310183) allows for the
monitoring and control of the Innovator CXB Series system without the need for special
software on the remote computer. This option may not be included in your system.
Figure 8: Typical Ethernet Configuration Menu
For the first time configuration of the system, the following must be completed. A
computer must be placed on the same LAN as the Innovator CXB Series system (NOTE:
The Innovator CXB does not serve DHCP addresses – they must be entered manually on
the setup computer), which has the following factory default settings. Refer to Figure 8
for a typical configuration screen. (NOTE: A crossover cable may be needed if
connecting directly from a computer to the Innovator CXB Series system).
IP address:
Subnet Mask:
Default Gateway:
192.168.0.1
255.255.255.000
10.0.0.1
Once a connection has been established, the web interface can be launched by entering
the IP address of the Innovator CXB Series system as a URL in the browser of the
remote computer. A login screen will be displayed prompting for a user name and
password, which are case sensitive. There are two levels of access: administrative
and view only. The factory default user name and password is:
User name:
Password:
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Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Web Ethernet
Interface Description
Figure 9: Typical Ethernet Main Control/Monitoring Screen
After logging in, the main control/monitoring screen is displayed, allowing operate and
standby control and read back of the system parameters. Refer to Figure 9 for a typical
main control/monitoring screen.
Green = okay/normal operation
Yellow = warning, no fault
Red = current fault
Orange = latched fault
To change the web interface settings, click the ‘configure’ button near the top of the
screen while you are logged as an administrator. When entering a site ID be sure to not
use any spaces or special characters except underscores, dashes, and forward slashes.
If the item on screen is Orange, which indicates latched fault, the fault can be reset by
pushing the Fault Reset button located top middle of screen.
To manage user accounts, click the ‘Account Management’ button near the top of the
configure screen
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Innovator CU5-500BTD/BRD ATSC Transmitter/
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Web Ethernet
Interface Description
Figure 10: Typical Account Management Screen
The Innovator CXB supports up to 5 different users. To add or change one of the
accounts click the Add/Change button in the row of the account you want to modify,
then enter the desired name, password, and administrator rights for the user and click
save.
Figure 10A: Typical Account Management Screen when Add/Change selected
When you have completed using the web interface, please remember to log out via the
'logout' button at the top of the screen.
NOTES: The Reset Ethernet User ID Screen, in the Set Up Menus on the LCD Display,
allows the user the option of resetting the User name and Password for the
Ethernet. The Yes or No selection can be changed by pushing the Up or Down
Button. After the selection has been made, the user needs to depress the right
or left arrow and then the display will ask “PUSH ENTER TO ACCEPT CHANGES”.
If the ENTER button is depressed, the change will be accepted. If any other
button is depressed, the change will not be made. If Yes is selected on the
screen, and accepted, the User name and Password will reset to the factory
default.
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Innovator CU5-500BTD/BRD ATSC Transmitter/
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Web Ethernet
Interface Description
The Reset Ethernet TCP Configuration Screen, in the Set Up Menus on the LCD
Display allows the user the option of resetting the TCP Configuration for the
Ethernet. The Yes or No selection can be changed by pushing the Up or Down
Button. After the selection has been made, the user needs to depress the right
or left arrow and then the display will ask “PUSH ENTER TO ACCEPT CHANGES”.
If the ENTER button is depressed, the change will be accepted. If any other
button is depressed, the change will not be made. If Yes is selected on the
screen, and accepted, the TCP Configuration will reset to the Default TCP
Configuration.
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Innovator CU5-500BTD/BRD ATSC Transmitter/
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Board Descriptions
Circuit Descriptions of Boards in the CU5, CU30, CU50 & CU100 Transmitters
(A1) 8 VSB Demodulator Board (1308275) - Only used with BRD operation
Overview
The 8 VSB demodulator assembly receives an off air 8 VSB signal on any VHF or UHF
channel and demodulates this to an MPEG-2 transport stream that is per the SMPTE310M standard. The input to the assembly is at an “F” style connector on the shielded
tuner and can be at a level of –8 to –78 dBm. The tuner (TU1) down converts the RF
channel to a 44 MHz IF signal. This signal is the input to the digital receiver chip U1.
The digital receiver chip subsequently decodes the IF and delivers an MPEG-2 transport
stream on a parallel data bus to a programmable logic array, U8. U8 clocks the
asynchronous MPEG data from the receiver chip and outputs a synchronous data stream
at a 19.39 MHz rate to buffer/driver U11. U11 subsequently drives the output at J13 to
a lower level that is AC coupled out of the board.
Microcontroller Functions
A microcontroller, U17, is provided on this assembly to supervise the operation of the
receiver chip and the tuner. In addition, the microcontroller also interfaces to the front
panel LCD display via connector J24 and pushbutton interface on J27. On power up, the
microcontroller sets the tuner to the last channel that was selected when the unit was
powered down. In addition, the microcontroller also configures the digital receiver to
operate as an 8 VSB receiver. The communication between all of the devices on this
board is via an I2C serial bus that is local to this board.
Jumper and DIP Switch Settings
This board can be used in various assemblies. When this assembly is installed in the
Innovator CXB product, the jumper on J26 should be placed between pins 2 and 3.
There are two other jumpers in this assembly, on J7 and J8. Both of these jacks should
have the jumper placed between pins 2 and 3 for normal operation.
The DIP switch on this board is reserved for future use and should remain set with all
switches in the OFF position.
(A2) Digital Modulator Board (1304883)
SMPTE-310 Input
The digital modulator board accepts a SMPTE-310 input at the SMA connector J42 from
the 8 VSB demodulator board in a BRD system or directly from the RF input jack on the
rear of the tray in an BTD system. This input is applied to a high speed window
comparator U21 that adjusts the level to a low voltage TTL signal to be used by the
Altera FPGA, U3. The SMPTE-310 signal is input to the FPGA to recover the clock and
the data. A portion of the clock and recovery circuit is performed by a high-speed
comparator, U17, which functions as an external delay circuit.
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Board Descriptions
Channel Coder
The FPGA subsequently uses the SMPTE-310 clock and data as the input to the channel
coder contained inside the FPGA. The channel coder is a series of DSP blocks defined by
the ATSC standard for 8 VSB data transmission. These blocks include the data
randomizer, Reed Solomon Encoder, data interleaver, trellis coder, and sync inserter.
The channel coder portion inside the FPGA generates the 8 distinct levels in an 8 VSB
transmitter. These levels are subsequently input to a linear equalizer that provides for
frequency response correction in the transmission path. The linear equalizer is a 67 tap
FIR filter that is loaded with tap values from the microcontroller, U1, located on this
board. The output of the linear equalizer is then input to two pulse shaping filters, an in
phase (I) and a quadrature (Q) filter that are also located inside the FPGA. The pulse
shaping filters are FIR filters that have fixed tap values that are preset inside the FPGA.
The output of the pulse shaping filters is then applied to a Pre-Distortion Linearizer chip,
U4, which can be used to correct for nonlinearities in the data transmission path. The
output of the Pre-Distortion chip is gain scaled and output to a dual D/A converter,
which output a baseband I and Q analog signal.
Analog Output Section
The baseband I and Q signals from the D/A converter are applied to differential analog
filters that remove some of digital artifacts from the D/A conversion process. The output
of the I channel filter is then mixed with the pilot frequency, 46.69 MHz, using mixer
U30. The output of the Q filter is mixed with the pilot frequency that is phase shifted 90
degrees using mixer U34. The mixers are current driven devices so that when the
outputs of U30 and U34 are connected together, they provide a combined output. This
combined output is subsequently input to a final differential output filter which provides
the final IF output at the SMA connector, J38. To maintain signal integrity, this IF
output is connected to the SMA connector J39 with a small semi-rigid cable assembly.
The final IF output then appears at J1-2B.
Pilot Frequency Generation
The 46.69 MHz pilot, which is used in the mixing process, is generated from a 46.69
MHz VCXO, U37 that is phase locked to a 10 MHz reference. The VCXO and the 10 MHz
are divided down to a common frequency, which is then compared internal to the FPGA.
The FPGA subsequently provides error signals to an analog phase locked implemented
with op amp stages U45-A, B and C. The output of these compensation stages is used
as the control voltage to the VCXO, U37. The phase locked output of U37 is applied to
an analog filter to remove harmonics of the pilot and then input to the quadrature
splitter Z1. The outputs of Z1 are used as the inputs to the mixers in the analog output
section.
Voltage Requirements
The ±12 VDC connect to the board at J30-1. The +12V SYS connects to J18A, B & C and
to regulator circuits. The +12V SYS is filtered by L2, L3, C105 and C106 before it is
applied to the rest of the board as +12VQ and +12VI. The -12 VDC SYS connects to
J19A, B & C and to regulator circuit. The -12V SYS is filtered by L6, L7, C111 and C112
before it is applied to the rest of the board as -12VI and –12VQ.
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Regenerative Translator
Board Descriptions
The +12V SYS also connects through the resistor R81 to provide +5V EXT to the rest of
the board, and to the regulators U23 that provides +3.3V to the rest of the board and to
U27 that provides +1.8V output. The +3.3V also connects to U24 that supplies +1.5V
output. The +12V SYS connects to the regulator U25 and U26 to supply the +5VA output.
The output of U25 also connects to U28, which provides the +5V output to the rest of the
board. +12V SYS is filtered by L4 and C107 to provide the +12V output to the board.
The –12V SYS also connects to the regulator U22 that provides the –5V VA to the rest of
the board. -12V SYS is filtered by L5 and C108 to provide the -12V output to the board.
Amplitude and Phase Correction
Pin
Attenuator
J2
IF Input
0 dBm Pk Pwr
In Phase
In Phase
Splitter
Combiner
Quad
Quad
Quad
Front Panel
Input Fault
Indicator
Video Loss
Indicator
Input
Input and
Fault
Modulation
Detectors Modulation
Loss
ALC
TP1 = 1V
Level
Detector
Frequency
Response
Corrector
Frequency
Response
Corrector
Frequency
Response
Corrector
J1
IF
Output
(A3) IF Pre-Corrector Board (1308796)
The IF Pre-Corrector Board provides ALC, automatic or manual, gain control of the IF
level. The board also supplies pre-correction Response, In Phase and Quadrature NonLinear adjustments. The board has the circuitry for ALC Fault, Input Fault and
Modulation Fault monitoring and indications.
The input IF signal at J2, typically 0 dBm peak power centered at 36 or 44 MHz, is fed to a
splitter circuit Z1 which produces two equal outputs, one at Port 1 and the other at Port 2.
The output at Port 1 connects to the input and modulation fault circuitry. The output at
Port 2 connects to the pin-diode attenuator circuit.
Pin-Diode Attenuator Circuit
The output of Z1 at Port 2 connects to a pin-diode attenuator circuit that consists of CR1,
CR2 & CR3. Each of the pin diodes contains a wide intrinsic region; this makes the diodes
function as voltage-variable resistors at this intermediate frequency. The value of the
resistance is controlled by the DC bias supplied to the diode. The pin diodes are
configured in a pi-type attenuator configuration where CR1 is the first shunt element, CR3
is the series element, and CR2 is the second shunt element. The control voltage, which
can be measured at TP2, originates either from the ALC circuit when the switch S1 is in
the ALC Auto position, between pins 2 and 3, or from pot R37, MAN GAIN, when S1 is in
the Manual Gain position, between pins 1 and 2. In the pin diode attenuator circuit,
changing the amount of current through the diodes by forward biasing them changes the
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Board Descriptions
IF output level of the board. By controlling the value of the voltage applied to the pin
diodes, the IF signal level is maintained at the set level.
When the IF signal passes out of the pin-diode attenuator through C7, it is applied to the
modular amplifier U1. This device contains the biasing and impedance-matching circuits
that makes it operate as a wide-band IF amplifier. The output of U1 connects through C8,
NON-LIN IN, to the Summing Port input of the splitter Z3. The splitter provides the
outputs to the Non-Linear Pre-Corrector stages. The output at Port 1 connects to the
Quadrature Pre-Corrector and the output at Port 2 connects to the In Phase PreCorrectors.
In Phase and Quadrature Corrector Circuits
Two of the Pre-Corrector stages are in the In Phase Amplitude pre-correction path and one
stage is in the Quadrature Phase pre-correction path. Each stage has a variable threshold
control adjustment, R67 and R69, in the In Phase path, and R89 in the Quadrature path,
which determine the point that the gain is changed in each of the stages.
The output of Z3 at Port 2 connects to J10, which is jumpered through W5 to J9. External
In-Phase Corrector circuits may be connected between these jacks. The signal from J9
connects to the first corrector stage on the board. The first corrector stage in the In
Phase path operates as follows. The In Phase IF signal is applied to the transformer T3,
which doubles the voltage swing by means of a 1:4 impedance transformation. Resistors
R75 and R78 form an L-pad that lowers the level of the signal. The input signal level,
when it reaches a set level, causes the diodes CR9 and CR11 to turn on, generating
current flow that puts them in parallel with the L-pad. When the diodes are put in parallel
with the resistors, the attenuation through the L-pad is lowered, causing stretch of the
signal.
The signal is next applied to amplifier U8 to compensate for the loss through the L-pad.
The breakpoint, or cut-in point, for the first corrector is set by controlling where CR9 and
CR11 turn on. This is accomplished by adjusting the threshold cut-in resistor R67. R67
forms a voltage-divider network from +6.8 VDC to ground. The voltage at the wiper arm
of R67 is buffered by the unity-gain amplifier U5A. This reference voltage is then applied
to R68, R71, and C33 through L11 to the CR9 diode. C33 keeps the reference from
sagging during the vertical interval. The .9 VDC reference voltage is applied to the unitygain amplifier U5B. The reference voltage is then connected to diode CR11 through choke
L12. The two chokes L11 and L12 form a high impedance for IF that serves to isolate the
op-amp ICs from the IF.
After the signal is amplified by U8, it is applied to the second corrector stage in the In
Phase path through T4. The second In Phase Stage and the stage in the Quadrature path
operate in the same fashion as the first. All three corrector stages are independent and
do not interact with each other. The In Phase Correctors can be disabled by moving the
jumper W4 on J8 to the Disable position, between pins 1 & 2. This moves all of the
breakpoints past the signal peaks so that they will have no affect. The pre-distorted IF
signal, in the In Phase path, connects to the op amp U9 whose output level is controlled
by R88, the in phase amplifier adjustment. The pre-distorted In Phase IF signal
connects to Port 1 on the combiner Z4.
The Port 1 output of Z3 connects from J11 through the W6 jumper to J12. The IF is
connected to T5, the 1:4 impedance transformer input to the Quadrature circuit.
External Quadrature Corrector stages may be connected between jacks J11 and J12.
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Board Descriptions
The pre-distorted IF signal, in the Quadrature Phase path, connects to the op amp U11
whose output gain is set by R102, which provides a means of balancing the level of the
Quad Phase pre-distorted IF signal that connects to Port 2 on the combiner Z4.
The Quadrature and In Phase pre-distorted IF signals are combined by Z4, amplified by
U10 and connected through C57 to the S Port of the splitter Z2. Z2 provides two outputs
of the combined Quadrature and In Phase pre-distorted IF signals.
Frequency Response Corrector Circuit
The output of Z2 at Port 2 connects to the first corrector stage of the three-stage
frequency-response corrector circuit. The three stages are adjusted as needed to attain
the best response across the bandwidth. The frequency-response corrector circuit
operates as follows. Variable resistors R24, R25 and R26 are used to adjust the depth
and gain of the notches and variable caps C14, C15 and C16 are used to adjust the
frequency position of the notches. These are adjusted as needed to compensate for
frequency response problems. The jumpers W1 on J4, W2 on J5 and W3 on J6 are
moveable to set the frequency response of the circuits for 44 MHz, which is between
pins 2 & 3 or between 1 & 2 for 36 MHz.
The Non-Linear and Frequency Response pre-corrected IF is connected to the op-amp
U2. After amplification, the IF is split with one path connected through a divider
network to J1 the IF output jack on the board, -12 dBm. The other path is fed through a
divider network to J3 the IF Sample Jack, –18dBm.
ALC Circuit
The other non-linear pre-corrector output of Z2 at Port 1 connects to the input of the ALC
circuit. The IF signal is applied to the transformer T1, which doubles the voltage swing by
means of a 1:4 impedance transformation. It is connected to the ALC detector circuit,
consisting of C11, CR4 and R21. The detected ALC level output is amplified by U3A and
wired to U3B, pin 6, where it is summed with the power control setting of R40 the ALC
Adjust pot.
The output of U3B connects through S1 pins 2 to 3, if it is in the ALC position, to the pindiode attenuator circuit, CR1, CR2 & CR3. The high forward biases them more or less,
that increases or decreases the IF level, therefore the output level. When the input signal
level increases, the forward bias on the pin attenuator decreases, therefore the output
power decreases, that maintains the output power as set by the customer.
The ALC voltage is set for 1.0 VDC at TP1 with a –12 dBm peak sync output as measured
at J1 of the board. The ALC action starts with the ALC detector level monitored at TP1.
The detector output at TP1 is nominally, 1.0 VDC, and is applied through resistor R33 to a
summing point at op-amp U3B pin 6. The current available from the ALC detector is
offset, or complemented, by current taken away from the summing junction. In normal
operation, U3B pin 6, is at 0 VDC when the loop is satisfied. If the recovered or peakdetected IF signal level at the IF input to this board should drop, which normally indicates
that the output power has decreased, the null condition no longer occurs at U3B pin 6.
When the level drops, the output of U3B pin 7 goes more positive. If S1 is in the
Automatic position, it will cause the ALC pin-diode attenuators CR1, CR2, and CR3 to have
less attenuation and therefore increase the IF level that will compensate for the decrease
in the output power level.
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If the ALC cannot increase the input level enough to satisfy the ALC loop, due to the lack
of range, an ALC fault will occur. The fault is generated because U3C pin 9, increases
above the trip point set by R47 and R50 until it conducts. This makes U3C pin 8, high and
causes Q3 to conduct, which lights the Red ALC Fault LED DS1.
Input Fault and Modulation Fault Circuitry
The input IF signal at Z1 Port 1 connects to the input and modulation fault circuitry at
T2. T2 doubles the voltage swing by means of a 1:4 impedance transformation. The
output is connected to a detector circuit, consisting of R54, CR6, R58 and C19. The
detected IF level output is amplified by U4A and then split. There is a Test Point at TP3
for a voltage reference check of the input level.
One output of U4A is connected to the detector CR5 that produces a Peak Sync Voltage,
which is applied to the Op-Amp U12A. The detector provides a reference that
determines the IF signal level at the input to the Board. The operation of the Threshold
Detector is as follows. The Minimum IF Input level at TP3 is fed through detector CR5 to
the Op-Amp IC U12A Pin 2. The reference voltage for the Op-Amp is determined by the
voltage divider consisting of R52 and R57 off the +12 VDC line. When the detected
input signal level at U12A Pin 2 falls below this reference threshold, approximately 10 dB
below the normal input level, the output of U12A at Pin 1, goes to the +12 VDC Rail.
This High is connected to the Gate of Q4 which forward biases it and creates a current
path from the +12 VDC line through the Red LED DS2, the Input Level Fault Indicator
which lights, and the Transistor Q4 to Ground. The High also connects through the
diode CR7 to the Gate of Q6 that conducts and connects a low to J7-1, Input Loss, which
is wired to the Control Board for control and monitoring.
The Video Input Level at TP3 is also fed to a modulation loss circuit consisting of the IC
U4B, U12B and associated component. When the input signal level to the U4B falls
below the reference set by R62 and R60, which acts as a loss of Modulation Detector,
the output of U4B, goes high which is split. One part biases On the Transistor Q9. A
current path is then established from the +12 VDC line, the resistors R63 and R64, the
Red LED DS3, the Modulation Loss Indicator, which lights, through Q9 to ground. The
other High output of U4B is connected to U12B pin 5 whose output at pin 7 goes High.
This high connects to the gate of Q8 Biasing it On. With Q8 On, a low is connected to
J7-2, Modulation Loss, which is wired to the Control Board for control and monitoring.
±12 VDC, +6.8 VDC, and VREF needed to Operate the Board
The ±12 VDC connects to the board at jack J7. The +12 VDC connects to J7 pins 5 and 6
and is filtered by L10 and C25 before it is applied to the rest of the board. The
-12 VDC connects to J7 pin 8 and is filtered by L9 and C23 before it is applied to the rest
of the board.
Two reference voltages are needed for the operation of the pre-corrector circuits. One
+12 VDC input is split by R103 and R104. The split +12 VDC output through R103
connects to the Zener diode VR1, which generates the +6.8 VDC output that is used in the
pre-corrector stage. The split +12 VDC output through R104 connects to the diodes CR15
and CR16 that supply a .9 VDC reference output voltage, VREF, which provides
temperature compensation for the two diodes in each of the in phase and quadrature precorrector stages.
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Mixer
Board Descriptions
Mixer
J6
IF Input
J7
RF Output
1.1-1.9 GHz
1 GHz
1 GHz
TCXO
Fract-N PLL
10 MHz
TCXO
Integer-N PLL
Integer-N PLL
VCO 1
External
10 MHz
Detection
J10
External
10 MHz Input
VCO 2
Band Switching
from Ext Control
(A4) Frequency Agile Upconverter Board (1309695)
The board takes a 44 MHz or 36 MHz IF signal and converts it to a TV channel in the
range of 54-860 MHz. The IF input signal, (≈-8dBm level), is connected to J6 on the
board. The IF first passes through a frequency response pre-corrector, consisting of
R145, C188, R 146 and C189. The pre-corrector circuit compensates for any response
variation in the ceramic filter used to pick the appropriate conversion sideband. The
pre-corrected signal is then converted to a second IF centered at 1044 MHz using U16,
U18 and associated components. The signal is next applied to a second mixer, U15,
where it is converted to the final RF channel frequency. The signal is then sent to a low
pass filter that removes unwanted conversion products above 1 GHz., amplified by U21
passed to another low pass filter that removes unwanted conversion products above 1
GHz, amplified by U20 and connected to J7 the RF output jack for the board (≈-3dBm
level).
The upconverter has two local oscillators, LO1 and LO2. The LO1 oscillator, consists of
U1, U2, U5, U6 and amplifiers U3 and U4. The LO1 oscillator operates at 1 GHz for 44
MHz IF inputs and is used to convert the signal to 1044 MHz. In 36 MHz IF systems, this
oscillator circuit operates at 1.008 GHz. The Red LED DS4 will light if the PLL for the
LO1 oscillator is not locked.
The second LO, LO2, consists of two VCOs, U26 and U31, that are used to generate the
second LO. One VCO operates from 1.1-1.5 GHz and the second from 1.5-1.9 GHz. The
Red LED DS2 will light if the PLL for the LO2 oscillator is not locked.
Both of the LOs, LO1 and LO2, are locked to an on board 10 MHz VCXO. The 10 MHz
VCXO circuit consists of U36, U39, the VCTCXO Y1 and associated components. When
an external 10 MHz signal is applied to J10 on the board, the internal VCXO is locked to
the external 10 MHz, otherwise, it is free-running. The Red LED DS6 will light if an
External 10 MHz reference is present. The Red LED DS3 will light if the PLL for the 10
MHz oscillator is not locked.
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J1
RF Input
Pin Attenuator
Board Descriptions
J2
RF Output
Auto/Man Select
TP1
Input Loss
Detector
Overdrive Detect
TP4
Mute from
Control Circuit
ALC
Output Power
Reflected Power
Input Power
Reference
(A5) ALC Board, Innovator CX Series (1308570)
The ALC Board, Innovator CX Series, is used to control the RF drive power to the RF
amplifier chain in the CU30, CU50 and CU100 transmitters. The board accepts an 8-VSB
RF input signal at a nominal input level of -3 dBm average power and amplifies it to
whatever drive level is necessary to drive the final RF amplifier in the tray to full power.
The input signal to the board at J1 is split by U4, with one half of the signal driving a PIN
diode attenuator, DS1 and DS2, and the other half driving a detector, U13, that is used
to mute the PIN attenuator when there is no input signal. The output of the PIN
attenuator is sent to two cascaded amplifiers, U2 and U3, which are capable of
generating +10 dBm average power from the board at J2.
The PIN attenuator is driven by an ALC circuit or by a manual fixed voltage bias,
depending on the position of switch S1. When the switch is pointing to the left, looking
from the front of the tray, the ALC circuit is enabled. When the switch is pointing to the
right, the ALC circuit is disabled and the PIN attenuator is controlled through the Manual
gain pot R62. When the switch is in either ALC or manual, the voltage in the unused
circuit is preset low by the circuitry connected to pins 4-6 on SW1. This allows the RF
power to ramp up slowly to full power when the switch changes positions. CR8, C33 and
associated components control the ramp up speed of the manual gain circuit. CR9, C42
and their associated circuits do the same thing for the ALC circuit. The practical effect of
this is to preset the RF drive power to near zero output power when enabling and
disabling the ALC, followed by a slow controlled ramp up of power.
The ALC circuit normally attempts to hold the tray output power constant, but there are
four faults that can override this. These faults are Input Fault, VSWR Cutback Fault,
VSWR Shutdown Fault and Overdrive Fault.
The Input Fault is generated by comparator U7C and presets the PIN attenuator and ALC
circuit to maximum attenuation whenever the input signal drops below about -7 dBm.
Test point TP2 allows the user to measure the detected input voltage.
The VSWR cutback circuit is set so that the ALC circuit will start reducing RF drive once
the Reflected power reaches a level of about 6% and will keep reducing the drive to
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Board Descriptions
maintain that level. U8A, U8B and their associated components diode-or the metering
voltages, which generates this cutback. The forward power is scaled to 2V = 100 % and
the reflected power is scaled to 2V = 25%. The Reflected metering voltage is doubled
again by U8B so that when the voltage of U8B exceeds the voltage at the output of U8A,
the reflected power takes over the ALC circuit. Once the U8B voltage drops below the
forward power at U8A, the forward power takes over again.
The VSWR shutdown circuit will shut the tray down if the Reflected power increases to
15% or higher, which can happen if the tray sees reflected power when the ALC is in
manual.
The Overdrive protection looks at a sample of the RF signal that is applied to J1 of the
board. The peak level of this signal is detected and can be measured on TP1. This
voltage is applied to a comparator with the threshold set by R38. If this threshold is
exceeded, the ALC circuit mutes then ramps up to try again. This circuit also works in
manual gain as well.
+32 dBm
RF Input
+10 dBm
RF Output
+46 dBm
Heatsink
Temperature
Sensor
(A6) Amplifier Assembly (1309621) – Used in the CU5
The (A6) Amplifier Assembly (1309621) is made up of (A6-A1) the 2 Stage UHF
Amplifier Board, 24V (1309608). The assembly has approximately 33 dB of gain.
(A6-A1) 2 Stage UHF Amplifier Board, 24V (1309608)
The 2 Stage UHF Amplifier Board, 24V (1309608) consists of a driver stage with a gain
of +14dB and two parallel connected final amplifier stages each with a gain of +14dB.
The working point settings for the 2 Stage Amplifier Board are factory set using the
potentiometers R32 for Q2, R15 for Q1, and R24 for Q3 and should not be altered. The
input RF connects to the first amplifier stage Q2. The output is split by U2 and
connected to the final amps. The final amplification circuit consists of parallel-connected
push-pull LDMOS amplifier circuits Q1 and Q3 operating in class AB each with
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approximately 14 dB of gain. The board uses a power supply voltage of 24V. The RF
transistors are operated at a voltage of 24V generated by the voltage regulators U6 and
U7 for Q2, U5 and U3 for Q3 and U1 and U3 for Q1, which provide a separate regulated
voltage to each transistor. In order to match the LDMOS impedance to the
characteristic impedance of the input and output sides, matching networks are located
before and after the amplifier circuits. The hybrid coupler U2 splits the input to the
parallel amplifiers and the hybrid coupler U4 combines the amplified outputs. The
combined output connects through a directional coupler to J1, the RF output jack of the
board. The directional coupler provides an RF sample at J3 that is used by an external
overdrive protection circuit located on (A5) the ALC Board. The RF output of the board
is 6W maximum 8-VSB. At this power level the board draws approximately 3.6A total
from the power supply.
(A6) Amplifier Assembly (1312797) – Used in the CU30, 50, 250 & 500
The (A6) Amplifier Assembly (1312797) is made up of (A6-A1) the 2 Stage UHF
Amplifier Board, CU30 (1308784) and (A6-A2) the RF Module Pallet w/Philips transistors
(1300116). The assembly has approximately 36 dB of gain.
(A6-A1) 2 Stage UHF Amplifier Board (1308784)
The 2 Stage UHF Amplifier Board, (1308784) consists of a driver stage and a parallel
connected final amplifier stage which have a total gain of approximately
23 dB. The working point settings for the 2 Stage Amplifier Board are factory set using
the potentiometers R32 for Q2, R15 for Q1, and R24 for Q3 and should not be altered.
The input RF connects to the first amplifier stage U2, which has a gain of approximately
14 dB. The output is split by U2 and connected to the final amps. The final
amplification circuit consists of parallel-connected push-pull LDMOS amplifier circuits Q1
and Q3 operating in class AB each with approximately 14 dB of gain. The board uses a
power supply voltage of 28-32V. The RF transistors are operated at a voltage of 24V
generated by the voltage regulators U1 for Q1, U5 for Q3 and U6 for Q2, which provide
a separate regulated voltage to each transistor. In order to match the LDMOS
impedance to the characteristic impedance of the input and output sides, matching
networks are located before and after the amplifier circuits. The hybrid coupler U2 splits
the input to the parallel amplifiers and the hybrid coupler U4 combines the amplified
outputs. The combined output connects through a directional coupler to J1, the RF
output jack of the board. The directional coupler provides an RF sample at J3 that is
used by an external overdrive protection circuit located on (A5) the ALC Board. The RF
output of the board is being used as a driver and has a level of 3W maximum 8-VSB. At
this power level the board draws approximately 1.8A total from the power supply.
(A6-A2) RF Module Pallet w/Philips Transistors (1300116)
The RF Module Pallet, w/Philips Transistors, is made from the RF Module Pallet w/o
Transistors (1152336). This broadband amplifier is for the frequency range of 470 to
860 MHz. The amplifier is capable of delivering a maximum output power of 100 Watts
peak, with an amplification factor of approximately 13 dB.
The RF Module Pallet w/Philips Transistors (1300116) is a broadband amplifier for the
frequency range of 470 to 860 MHz. The amplifier is capable of delivering a maximum
output power of 100 Watts peak, with an amplification factor of approximately 13 dB.
The amplification circuit consists of push-pull amplifier blocks V1 and V2, connected in
parallel, operating in class AB. In order to match the impedance of the transistors to the
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Board Descriptions
characteristic impedance of the input and output sides, matching networks are placed
ahead and behind the amplifier blocks. Transformers Z3 and Z4 at the input to V1 and
V2 and Z5 and Z6 at the output of V1 and V2 serve to balance the input and output
signals. The paralleling circuit is achieved using the 3-dB input coupler Z1 and the
second part of Z1, which is the 3-dB output coupler. The working point settings of the
amplifier circuits are factory implemented by means of the potentiometers R9, R11, and
R12 and should not be altered. The combined output of Z1 connects to the RF output
jack of the board at J2. The output of the amplifier assembly at J2 connects to J1 on
(A7) the output detector board.
(A6) Amplifier Assembly (1312827) – Used in the CU100 & CU125
The (A6) Amplifier Assembly (1312827) is made up of (A6-A1) the 1 Watt Amplifier
Board (1310282), (A6-A2) the BL871 Single Stage Amplifier Board (1311041), and (A6A3) the Dual 878 Pallet Assembly (1310138). The entire amplifier assembly has
approximately 36 dB of gain.
(A6-A1) 1 Watt UHF Amplifier Module (1311170)
This board is a broadband UHF amplifier capable of producing an output power in excess
of 1W Peak. It is normally operated at an average power of 100 mW 8VSB or lower. It
consists of two AH202 MMICs operating in parallel. The board is powered by +12 VDC
and has no adjustments. The board has a gain of approximately 16 dB.
(A6-A2) BL871 Single Stage Amplifier Board (1311041)
This board consists of a single stage amplifier operating at +42 VDC. The board has an
overall gain of about 16 dB. The input to the board passes through a 3 dB attenuator
consisting of R11-R13, and then is applied to the gain stage, which consists of a single
LDMOS transistor Q1 operating in Class AB. The bias voltage for the transistor is
generated through the voltage regulator U1, and is adjusted using pots R2 and R3. The
Diode CR1 provides temperature compensation for the transistor. The transistor will
output over 20 Watts DVB, but is typically used in a driver application at much lower
output powers. The Directional Coupler U1 provides a 20 dB down sample of the RF
output.
(A6-A3) Dual 878 Pallet Assembly (1310138)
This board is a UHF LDMOS power amplifier consisting of two power transistors
operating in parallel. The board operates on a power supply voltage of +42 VDC. The
voltage regulator U1 steps down the voltage to provide a bias voltage to each transistor.
The diodes CR1 and CR3 are used to temperature compensate the bias voltage. As the
RF transistors heat up, the diodes also heat up, causing the voltage across them to drop,
lowering the bias voltage to the RF transistors so that it remains constant with device
temperature.
The board has a gain of approximately 17 dB, and can operate at an output power of
150 Watts average power DVB, 220 Watts average power ATSC, or 440 Watts Peak Sync
plus sound in analog operation. The transistors are operated in quadrature, with one
transistor operating 90 degrees out of phase of the other, which provides for a very
good return loss across the UHF band on both the input and output of the board.
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Board Descriptions
(A7) Output Detector Board (1308685 or 1312207 in the CU100BTD/BRD)
The (A7) Output Detector Board provides forward (2V=100%) and reflected (2V=100%)
power samples to the CU Control Board for metering and monitoring purposes. R7 is the
reflected power calibration pot and R23 is the forward power calibration pot. A Forward
power sample, -10 dBm, connects to J4 on the board, which is cabled to the front panel
sample jack of the tray. The RF output of the board, typically +46 dBm, is at J2, which
is cabled to J9 the RF Output Jack of the tray.
(A8) Control Card, Innovator CX (1312543)
The Innovator CX Control board provides the overall system control for the CXB
transmitter. There are two main elements of the board, U7 and U9. U7 is a
programmable logic device that is loaded with firmware, which provides the overall
transmitter control. It decides whether or not to allow the transmitter to generate RF
output power, and turns the +32 VDC power supply on and off depending on whether or
not it is receiving any faults, either faults generated on board, or faults generated
externally. The second major component of the board is the microcontroller U9, which
controls the front panel indications and drives the display. The U9 microcontroller is not
involved in the decision making process, U7 does that. Rather, it is layered on top of U7
and is the EPLD's interface to the outside world. Information is passed between the
microcontroller and the EPLD. The microcontroller communicates information to and
from the front panel and sends the EPLD the information it needs to decide whether or
not to allow the transmitter to turn on. The front panel viewable LEDs DS3 for
Operate/Standby and DS4 for Status indicate the current operating condition of the
transmitter are mounted on and controlled by this board. The U9 microcontroller can also
communicate, using the Optional Ethernet Kit, with a daughter card that allows the user
to view remote control parameters via a web Ethernet interface.
The ±12 VDC and +5 VDC from the (A9) power supply and the +32 VDC from the (A10)
power supply are routed to the other boards in the tray through this board. The +32
VDC power supply operates all the time, and connects the +32 VDC to the board at J191, 2, & 3 with 5 common. Q13 on the control board is turned on and off to gate the +32
VDC, which connects through J19-6, 7 & 8, to the RF output stages.
The ±12 VDC and +5 VDC input voltages to this board is connected through J21 and
filtered before being connected to the rest of the board. +12 VDC connects through
J21-1, +5VDC through J21-2 & 3, and -12 VDC through J21-6. Common connections for
the input voltages are connected to J21-4 & 5. The ±12 VDC and +5 VDC are used on
this board and also routed to the other boards in the tray through this board. The +3.3
VDC for the microcontroller and programmable logic array, mounted on the board, is
provided by the voltage regulator IC U6 from the filtered +5 VDC input. The output of
U6 can be adjusted to +3.3 VDC using R120.
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Board Descriptions
(A9 & A10) Power Supplies used in CU5, CU30, CU50 & CU100 and Driver for
CU250 & CU500
Voltages for the operation of the boards in the tray are generated by (A9) a +5VDC and
±12VDC power supply and (A10) a +32VDC power supply for the CU30, CU50 and
Driver for the CU250 and +24VDC for the CU5. The 115VAC or 230VAC input to the tray
connects through the AC power cord at J6, the power entry module located on the rear
panel of the tray. An On/Off 10A/250VAC circuit breaker is part of the power entry
module. With the circuit breaker switched On, the (L) line input is wired to F1 a 10 Amp
fuse for over current protection. The AC lines are connected to terminal block TB1,
which distributes the AC to (A9 and A10) the two DC power supplies. There are two
varistors, mounted on TB1, connected from the line input to neutral and to ground for
surge protection. The AC also connects to the (A11) fan mounted on the rear panel of
the tray. The fan will run when AC is applied to the tray and the circuit breaker is
switched On. The +5VDC and ±12VDC outputs of the (A9) power supply connects to the
terminal block (TB2) that distributes the DC to the boards in the tray. Some of the
+5VDC and ±12VDC outputs connect directly to the 8 VSB Demodulator and 8 VSB
Modulator boards while the other outputs connect through the CU Control Board to the
IF Precorrector, the Digital Upconverter, the ALC, the Amplifier Assembly and the Output
Detector Boards. The +24/+32VDC power supply outputs connect to the (A8) CU
Control Board, which then supplies the switched +24/+32VDC to the (A6) Amplifier
Assembly.
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Board Descriptions
Circuit Descriptions of Boards in the CU250, 250 Watt and CU500, 500 Watt
ATSC Amplifier Trays
(A5) Amplifier Control Board (1309822)
The Amplifier Control Board uses a Programmable logic device to control the amplifier
tray. It takes an enable signal from an external driver tray, and turns the power supply
on and off whenever the driver has told it to turn on, unless it detects faults internal to
the tray. The board monitors the forward and reflected power, the heatsink
temperature, and the power supply voltage and will generate alarm signals if any of
those parameters exceed safe limits. The amplifier tray has no front panel display other
than a two LEDs, one for Status and one for Enable. The board sends all its output
information, including the forward and reflected levels, back to the driver tray, through
J4, so the information can be displayed on that tray's LCD Display. The board will
generate a Red Blinking Status LED if it detects an alarm, fault, prompting the operator
to look at the LCD display on the driver tray to see what fault has occurred.
The +12 VDC input power of this board is routed through J1. The +12 VDC is filtered
and connected to U10 a voltage regulator IC, which provides +5 VDC as an output. The
+5 VDC is filtered before being connected to the rest of the board. The +3.3 VDC for
the microcontroller and programmable logic array is provided by the voltage regulator IC
U8 from the +5 VDC.
(A4) 125 Watt Amplifier Heatsink Assembly (1310161) used in the CU125
The 125 Watt amplifier heatsink assembly is made up of a LDMOS amplifier module
(1308690) and a coupler board (1310175).
(A4) 250 Watt Amplifier Heatsink Assembly (1308921) used in the CU250
The 250 Watt amplifier heatsink assembly is made up of a 2 way splitter board
(1308933), two LDMOS amplifier modules (1308690) and a 2 way combiner board
(1309804).
2 Way Splitter Board (1308933) (Part of 250 Watt Amplifier Heatsink
Assembly, 1308921
The 2 way splitter board takes the RF Input at J1 (≈11Watts ATSC) on the board and
splits it into two equal outputs (≈4.75Watts ATSC) that connect to the inputs of the two
LDMOS amplifier pallets.
LDMOS Amplifier Pallets (1308690) (Used in both Amplifier Heatsink Assemblies)
There is one LDMOS Amplifier Pallet mounted on the 125 Watt Amplifier Heatsink
Assembly and there are two LDMOS Amplifier Pallets mounted on the 250 Watt Amplifier
Heatsink Assembly. Each of the LDMOS pallets has approximately +14dB of gain for the
UHF frequency range of 470 to 860 MHz. The pallets operate Class AB and generate 190
Watts ATSC with an input of 4.75 Watts ATSC.
Technical Manual, Rev. 0
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Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Board Descriptions
2 Way Combiner Board (1309804) (Part of 250 Watt Amplifier Heatsink
Assembly, 1308921
The 2 way combiner board takes the two RF Inputs at J1 (≈190Watts ATSC) and J2
(≈190Watts ATSC) on the board and combines them to a single output (≈3Watts) that
connect to the inputs of the two LDMOS amplifier pallets.
(A1 & A2) 125 Watt and 250 Watt Amplifier Tray Power Supplies
The 230VAC, needed to operate the tray, connects through the AC power cord at J6, the
power entry module located on the rear panel of the tray. An On/Off 20A/250VAC
circuit breaker or a 10 Amp fuse, in the 125 Watt or 20 Amp fuse in the 250 Watt, is
mounted on the back panel of the tray under J6 the AC input jack. With the circuit
breaker switched On, the AC lines are connected to terminal block TB1, which distributes
the AC to (A1 and A2) the two DC power supplies. TB1 has three varistors connected
across the AC input lines for surge and over voltage protection. The AC input from TB1
also connects to the two fans mounted on the rear panel of the tray. The fans will run
when AC is applied to the tray and CB1 is On.
The +12VDC for the operation of the amplifier control board in the tray is generated by
(A1) a +12VDC power supply. The +12VDC power supply will operate and supply the
voltage to the control board when AC is connected to the tray and the CB1 circuit
breaker is turned On.
The +30VDC needed by the amplifier modules on the heatsink assembly is generated by
(A2) a +30VDC switching power supply. The +30VDC power supply will operate when
AC is connected to the tray, the CB1 circuit breaker or on/off switch is turned On and an
Enable is supplied to the tray.
Technical Manual, Rev. 0
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Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Board Descriptions
(Optional) ASI to S310 Converter Module
NOTE: Used with STL ASI feed inputs.
The ASI to SMPTE310M converter takes the STL ASI feed input, if present in your system,
and converts it to a SMPTE310M output which connects to the input to the Axcera
transmitter. The converter contains an ASI Motherboard (1311179), an ASI to 310
Conversion Board, Non-SFN (1311219), and a 120 VAC to +12 VDC converter module.
ASI Motherboard (1311179)
The ASI motherboard takes the +12 VDC, from the 120 VAC to 12 VDC converter
module, and converts it to +5 VDC and +3.3 VDC which are used by the ASI to S310
conversion board.
U1 is a regulator IC that supplies an output of +5 VDC at J2-7 that connects to the ASI
to 310 converter board. U2 is a regulator IC that supplies an output of +3.3 VDC at J211 that connects to the ASI to 310 converter board. Also +12 VDC is wired to J2-3 that
connects to the ASI to 310 converter board.
The ASI motherboard is the mounting platform for the four LEDs that are displayed on
the front of the module. The LEDs will be Green if everything is OK or Red if the
indicated function is malfunctioning. The LEDs are Power, which indicates +12 VDC is
connected to the converter, FIFO ERROR, which indicates an overflow or underflow
condition in the input buffer, S310 Lock, which indicates the converted S310 signal is in
a locked condition, and ASI Lock, which indicates the recovered ASI signal is in a locked
condition.
ASI to 310 Conversion Board, Non-SFN (1311219)
The ASI signal is input to the ASI to S310 conversion board via J1. U2 de-serializes the
ASI input signal into a parallel byte stream. The parallel byte stream is clocked into U6
which buffers and converts to a valid S310 bi-phase encoded signal. Null packets are
added or dropped during this process to obtain the valid 19.393 Mb/s output. U6 is also
responsible for re-stamping the PCR clock. The final S310 output of the board is at J5.
Technical Manual, Rev. 0
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Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
System Set Up Procedure
System Set Up Procedure
This transmitter was aligned at the factory and should not require additional
adjustments to achieve normal operation.
This Innovator CX Series transmitter is of a tray design with multiple boards inside the
tray. If a board fails, that board needs to be changed out with a replacement board.
The failed board can then be sent back to Axcera for repair. Contact Axcera Customer
Service Department at 1-724-873-8100 or fax to 1-724-873-8105, before sending in
any board or module.
R119
J1 (LO1)
J9 (LO2)
FREQ ADJ
Figure 11: (A4) Digital Upconverter Board (1309695)
Set Up of the LO1 and LO2 Samples on Upconverter Board
The following procedure should only be attempted if the Internal 10 MHz Reference is
used and the output carrier frequency is off. On the (A4) Digital Upconverter Board
(1309695), there are two Sample Jacks, J1 for LO1, 1GHz sample, and J9 for LO2,
the variable LO sample. Monitor the LO1 sample with a frequency counter and
adjust R119 to 1 GHz. The output carrier frequency should now be correct.
Technical Manual, Rev. 0
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Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
System Set Up Procedure
S1
AUTO/
MAN
TP1
1.0VDC
Figure 12: (A3) IF Pre-Corrector Board (1308796)
Set Up of the IF Precorrector Board in the Transmitter
Refer to Figure 12. Check that the Auto/Man switch S1 on the IF Pre-Corrector
Board is in the Automatic ALC position. This is the normal operating position for the
switch. The voltage at TP1 on the IF Pre-Corrector Board should be 1.0 VDC with
100% output power.
Refer to Figure 13. Check that the Auto/Man switch S1 on the ALC Board is in the
Automatic ALC position. (NOTE: The silkscreen is incorrect on A, B & C Rev. boards.
Auto position is with the bat to the left, toward J4.) Adjust R75 the ALC pot on the
ALC Board as needed to attain 100% output power. Switch to Manual Gain (Manual
ALC) and adjust the Manual Gain pot R62 for 100% output power. Switch the ALC
Board back to Automatic ALC.
R75
ALC ADJ
J4
R38
OVERDRIVE
THRESHOLD
S1
AUTO/MAN
R62
MAN ADJ
Figure 13: (A5) ALC Board (1308570)
Technical Manual, Rev. 0
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Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
System Set Up Procedure
R75
ALC ADJ
J4
R38
OVERDRIVE
THRESHOLD
S1
AUTO/MAN
R62
MAN ADJ
Figure 13A: (A5) ALC Board (1308570)
ALC Board Set-Up, Forward and Reflected Power Calibration for CU5, CU30,
CU50 and CU100 Systems
NOTE: If your system is a CU250 or CU500, refer to the next section for the forward
and reflected power calibration procedures.
Refer to Figure 13A. Locate (A5) the ALC Board (1308570), in the preset the
Overdrive Threshold pot R38 full CW and set R62, Manual Adjust, and R75, ALC
Adjust, full CCW.
Apply an 8-VSB signal at -3 dBm average level to the J1 input jack to the tray.
Switch S1 to Manual Gain, and increase the output power to 100% using R62.
Calibrate the transmitter output power for 100% using R23, the Forward Calibration
pot, on the Output Detector Board. Refer to Figure 14.
R7
REFLECTED
CAL ADJ
R23
FORWARD
CAL ADJ
Figure 14: (A7) Output Detector Board (1308685)
Technical Manual, Rev. 0
52
Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
System Set Up Procedure
Refer to Figure 13A. Turn the output power down to 10% power with R62 on the
ALC Board. Remove the output RF connector from J2 on tray and calibrate the
reflected power to 10%, using R7, the Reflected Calibration pot, on the Output
Detector Board. Refer to Figure 14. Re-connect the RF output connector to the tray
and increase the power, in Manual gain using R62 on the ALC Board, to 110%.
Adjust the Overdrive pot R38 on the ALC Board, CCW until the overdrive threshold
just trips and the Overdrive Fault LED DS4 lights. Turn R38 slightly CW so that
power comes back up and DS4 goes out.
Switch S1 on the ALC Board to ALC. Turn the ALC Adjust pot R75 on the ALC Board
until the power is 100%. Switch S1 between ALC and Manual to verify smooth
switching, with minimal change in power. If necessary repeat the above procedure.
With the tray in ALC, use the ALC Adjust pot, R75, to decrease the power to 10%.
Remove the RF output connector from the tray. Verify that the VSWR Cutback LED,
DS6, comes on and the Reflected Power drops to approximately 6%. Reconnect the
RF output connector and increase the power back up to 100% using R75.
This completes the set up of the ALC board and the Forward and Reflected Power
Calibration.
Forward and Reflected Power Calibration of CU250 and CU500 Systems
NOTE: If your system is a CU5, CU30, CU50 or CU100, refer to the previous section
for the forward and reflected power calibration procedures.
Connect a calibrated coupler and average reading power meter to the output of the
DTV mask filter. On the ALC Board (1308570), mounted in the Driver Tray, set the
Switch S1, Auto/Manual ALC, to the Manual position. Refer to Figure 13A. Adjust
the Manual adjustment Pot, R62, for the desired output power level as indicated on
the average reading power meter. In the Amplifier Tray, on the Amplifier Control
Board (1309822), refer to Figure 15; adjust the Forward Calibration Adjustment pot,
R8, for a reading of 100% on the External Amplifier Forward Power screen of the LCD
display mounted on the Driver Tray.
R8 FWD CAL ADJ
Figure 15: (A5) Amplifier Control Board (1309822)
On the ALC Board (1308570), mounted in the Driver Tray, set the Switch S1,
Auto/Manual ALC, to the Auto position. Adjust the ALC adjustment Pot, R75, for a
reading of 100% on the External Amplifier Forward Power screen of the LCD display
mounted on the Driver Tray. This completes the forward power set up and
calibration adjustments.
On the ALC Board (1308570), mounted in the Driver Tray, adjust the ALC
adjustment Pot, R75, for a reading of 10% on the External Amplifier Forward Power
screen of the LCD display mounted on the Driver Tray. Disconnect the load or the
antenna connected to the system. In the Amplifier Tray, on the Amplifier Control
Technical Manual, Rev. 0
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Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
System Set Up Procedure
Board (1309822), adjust the Reflected Calibration Adjustment pot, R26, for a reading
of 10% on the External Amplifier Reflected Forward Power screen of the LCD display
mounted on the Driver Tray. Reconnect the load or the antenna to the system.
Adjust the ALC adjustment Pot, R75, for a reading of 100% on the External Amplifier
Forward Power screen of the LCD display mounted on the Driver Tray. This
completes the reflected power calibration adjustment.
6 MHz
-35 dB
-110 dB
3 MHz
6 MHz
Figure 14: Typical 6 MHz Digital Spectrum
J14
W7
J13
W4
R126 Quad
#2 Threshold
R117 In Phase
#2 Magnitude
R69 Quad
#3 Threshold
R110 In Phase
#2 Threshold
R109 In Phase
#1 Threshold
R128 Quad
#3 Magnitude
R114 In Phase
#1 Magnitude
R129 Quad
#2 Magnitude
R24, R25 &R26
J4, J5 & J6
R125 Quad
#1 Magnitude
R67 Quad
#1 Threshold
Figure 15: (A3) IF Pre-Corrector Board (1308796)
Linearity Correction Adjustment (Non-Linear Distortions)
As shipped, the transmitter was preset to include amplitude and phase pre-distortion.
The pre-distortion was adjusted to approximately compensate the corresponding
non-linear distortions of the Power Amplifier.
NOTE: Refer to Figure 15. On (A3) the IF Pre-Corrector Board (1308796), check that
the Quadrature Correction enable/disable jumper W7 on J14 and the In Phase
Correction enable/disable jumper W4 on J13 are in the Enable position, between pins 2
& 3.
Technical Manual, Rev. 0
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Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
System Set Up Procedure
Set up a spectrum analyzer with 30 kHz resolution bandwidth and 30 kHz video
bandwidth to monitor the intermodulation products of the RF output signal of the
Tray at J2. A typical 6 MHz digital spectrum is shown in Figure 14.
There are five Corrector stages, two in phase and three quadrature, with
adjustments located on the IF Pre-Corrector Board. Each stage consists of a
threshold and a magnitude stage. The adjustments are adjusted as needed to correct
for any amplitude or phase intermod problems. R109 and R110 are the in phase
threshold adjustments. R114 and R117 are the corresponding magnitudes. The
threshold adjustments control the point in the signal’s amplitude where the
correction increases the gain, and the magnitude controls how much the gain is
increased for each correction stage.
The quadrature adjustments provide predistortion for fixing AM/PM distortion in the
amplifiers. R67, R126 and R69 are the threshold adjustments, and R125, R129 and
R128 are the corresponding magnitudes.
The above pots are adjusted for the greatest separation between the digital signal
and the intermod at the channel edges.
There is also a frequency response correction network on the board consisting of
R24-R26 and C14-C16. This has been factory set. Any adjustment of these controls
will result in having to reload taps into the digital modulator (See the Linearity
Correction Adjustment (Linear Distortions) section below).
Linearity Correction Adjustment (Linear Distortions)
As shipped, the digital linear precorrector is preset in the factory for optimal system
performance of the transmitter and output filter. This precorrection should not
require readjustment in the field.
However, in the event that field adjustment of the digital linear precorrection is
required, Axcera does offer an optional Precorrector Tap Converter (PTC) application.
This application allows the frequency response and group delay precorrection to be
adjusted using one of the following pieces of test equipment:
- Rohde & Schwarz EFA-53 Demodulator with the FIR Coefficient Readout option
- Tektronix VSA-5000 Vector Signal Analyzer
The PTC application allows tap settings to be downloaded from the test equipment to
a PC and then loaded into the Innovator CX through the serial interface. The
instructions included with the PTC application software provide the detailed setup
procedure.
If a problem occurred during the set up, help can be found by calling Axcera field
support at 1-724-873-8100.
Technical Manual, Rev. 0
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Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
System Set Up Procedure
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Technical Manual, Rev. 0
56
APPENDIX A
Innovator,
CU5-500BTD/BRD,
ATSC Transmitter/
Regenerative Translator
System
Drawings and Parts Lists
Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Appendix A, System
Drawings and Parts List
Innovator CXB Series Transmitter System
Drawing List
Innovator CX Series Regenerative Translator/Transmitter
CU5/CU30/CU50BRD/BTD Translator/Transmitter Typical Interconnect..... 1310876
CU5BRD Innovator 5 Watt Regenerative Translator
CU5BRD/BTD Block Diagram .............................................................................
CU5BRD/BTD Interconnect ...............................................................................
CU5BTD Innovator 5 Watt Transmitter
CU5BRD/BTD Block Diagram .............................................................................
CU5BRD/BTD Interconnect ...............................................................................
CU30BRD Innovator 30 Watt Regenerative Translator
CU30BRD/BTD Block Diagram ...........................................................................
CU30BRD/BTD Interconnect..............................................................................
CU30BTD Innovator 30 Watt Transmitter
CU30BRD/BTD Block Diagram ...........................................................................
CU30BRD/BTD Interconnect..............................................................................
CU50BRD Innovator 50 Watt Regenerative Translator
CU50BRD/BTD Block Diagram ...........................................................................
CU50BRD/BTD Interconnect..............................................................................
CU50BTD Innovator 50 Watt Transmitter
CU50BRD/BTD Block Diagram ...........................................................................
CU50BRD/BTD Interconnect..............................................................................
Innovator CU100BTD Transmitter
CU100BTD Transmitter Block Diagram .................................................. 1312181
CU100BTD Transmitter Interconnect..................................................... 1312177
Innovator CU100BTD w/Axciter Transmitter
CU100BTD w/Axciter Transmitter Block Diagram.................................... 1312647
CU100BTD w/Axciter Transmitter Interconnect ...................................... 1312646
Innovator CU100BRD Transmitter
CU100BRD Transmitter Block Diagram .................................................. 1312181
CU125ARD/ATD Innovator 125 Watt Regenerative Translator/Transmitter
(Consists of a CU30ARD/ATD Tray driving a CU125, 125 Watt Amplifier Tray)
CU125ARD/ATD Block Diagram ............................................................ 1310319
CU125ARD/ATD Interconnect ............................................................... 1310436
CU125, 125 Watt ATSC Amplifier Tray
CU125, 125 Watt Amplifier Tray Block Diagram .................................. 1310220
CU125, 125 Watt Amplifier Tray Interconnect ..................................... 1310219
CU250ARD/ATD Innovator 250 Watt Regenerative Translator/Transmitter
(Consists of a CU30ARD/ABTD Tray driving a CU250, 250 Watt Amplifier Tray)
CU250ARD/ATD Block Diagram ............................................................ 1310320
CU250ARD/ATD Interconnect ............................................................... 1310437
Technical Manual, Rev. 0
A-1
Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Appendix A, System
Drawings and Parts List
CU250, 250 Watt ATSC Amplifier Tray
CU250, 250 Watt Amplifier Tray Block Diagram .................................. 1308400
CU250, 250 Watt Amplifier Tray Interconnect ..................................... 1309077
OPTIONAL ASSEMBLIES
ASI to S310 Converter
ASI to S310 Converter, NSFN
ASI to S310 Converter, SFN
SMPTE310M to DVBASI Converter
Technical Manual, Rev. 0
A-2
APPENDIX B
Innovator,
CU5-500BTD/BRD,
ATSC Transmitter/
Regenerative Translator
Subassemblies and Boards
Drawings and Parts Lists
Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Appendix B, Subassemblies &
Boards Drawings and Parts List
Innovator CXB Series Transmitter
Subassemblies & Boards Drawing List
RF Module Pallet, Philips (Made into a RF Module Pallet, Philips 1300116).
Schematic.........................................................................51-5379-309-00WSP
RF Module Pallet, Philips (Mounted in Amplifier Assembly, CU30B/50B 1312566)
(Made from a RF Module Pallet w/o Transistors 1152336).
Digital Modulator Board (Part of the Digital Modulator w/Power Conditioner 1309629)
Schematic.......................................................................................... 1304884
8 VSB Demodulator Board
Schematic.......................................................................................... 1308276
ALC Board
Schematic.......................................................................................... 1308571
Output Detector Board (Mounted in the CU100B/CU125B)
Schematic.......................................................................................... 1308686
2 Stage UHF Amplifier Board (Mounted in Amplifier Assembly, CU30B/50B 1312566)
Schematic.......................................................................................... 1308785
IF Precorrector Board
Schematic.......................................................................................... 1308797
Amplifier Assembly, Used in the CU30A/CU50A (Contains a 2 Stage UHF Amplifier
Board 1308784 and a RF Module Pallet, Philips 1300116)
Assembly Interconnect ........................................................................ 1309554
Heatsink Assembly, FX400 (Mounted in the 250 Watt Amplifier Tray)
(Contains a 2 Way Splitter Board 1308933, 2 LDMOS Amplifier Pallets
1308690 and a 2 Way Combiner Board 1309804)
Technical Manual, Rev. 0
B-1
Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Appendix B, Subassemblies &
Boards Drawings and Parts List
2 Way Splitter Board (Mounted on the Heatsink Assembly, FX400 1308921
in the 250 Watt Amplifier Tray)
Schematic.......................................................................................... 1308934
Power Conditioner Board (Part of the Digital Modulator w/Power Conditioner 1309629)
Schematic.......................................................................................... 1309405
2 Stage UHF Amplifier Board (Mounted on the Amplifier Assembly 1309621)
Schematic.......................................................................................... 1309609
Amplifier Assembly, Used in the CU5A (Contains a 2 Stage UHF Amplifier Board 1309608)
Assembly Interconnect..................................................................... 1309622
Digital Modulator w/Power Conditioner (Contains a Digital Modulator Board 1304883
and a Power Conditioner Board 1309404)
Frequency Agile Upconverter Board
Schematic.......................................................................................... 1309696
2 Way Combiner Board (Mounted on the Heatsink Assembly, FX400 1308921
in the 250 Watt Amplifier Tray)
Schematic.......................................................................................... 1309805
Amplifier Control Board (Used in the 250 Watt Amplifier Tray)
Schematic.......................................................................................... 1309823
Dual 878 Pallet Amplifier Board (Used in the Amplifier Assembly, CU100B/125B)
Schematic.......................................................................................... 1310139
Heatsink Assembly, FX200 (Used in the 125 Watt Amplifier Tray)
(Contains a LDMOS Amplifier Pallet 1308690 and a Coupler Board 1310175)
Technical Manual, Rev. 0
B-2
Innovator CU5-500BTD/BRD ATSC Transmitter/
Regenerative Translator
Appendix B, Subassemblies &
Boards Drawings and Parts List
Coupler Board (Mounted on the Heatsink Assembly, FX200 1310161
in the 125 Watt Amplifier Tray)
Schematic.......................................................................................... 1310176
1 Watt Amplifier Board (Used in the Amplifier Assembly, CU100B/CU125B)
Schematic.......................................................................................... 1310283
BLF871 Single Stage Amplifier Board
(Used in the Amplifier Assembly, CU100B/CU125B)
Schematic.......................................................................................... 1311042
Amplifier Assembly, CU100B/CU125B
(Contains a 1 Watt Amplifier Board 1310282, a BLF871 Single Stage
Amplifier Board 1311041 and a Dual 878 Pallet 1310138)
Interconnect ...................................................................................... 1312827
Output Detector Board (Mounted in the CU50B)
Schematic.......................................................................................... 1312208
Innovator CXB Control Board
Schematic.......................................................................................... 1312544
Amplifier Assembly, CU30B/CU50B
(Contains a 2 Stage UHF Amplifier Board 1308784 and a
RF Module Pallet, Philips 130016)
Interconnect ...................................................................................... 1312797
LDMOS Amplifier Pallet 1308690 (Used in the 125W & 250W Amplifier Trays)
Manufactured by RES/Richardson .........................................................LDU601C
Technical Manual, Rev. 0
B-3
INNOVATOR CX
Low Power UHF ATSC Transmitter/Translator 5W - 1.8kW
Axcera designed the Innovator CX to provide broadcasters with a compact,
affordable and high quality transmitter that will meet their needs like no other
solution on the market. This advanced low power transmitter line uses the latest
LDMOS devices for broadband operation across the entire UHF band, and can
be configured as a DTV transmitter or regenerative translator. This allows users
to minimize spare parts stock, which is especially important to multi-transmitter
operators, and also enables simple and inexpensive channel changes.
Each very compact unit is completely contained within a single 3RU rackmount
chassis, including exciter, up to 125W. Higher power levels are achieved through
the addition of one or more of our compact rackmount power amplifiers.
Monitoring is simple with the traditional discrete interface or optional secure
Web browser/SNMP interface, allowing users to access all transmitter operating
and control parameters through any computer with Internet access.
DIGITAL
INNOVATOR CX
DIGITAL
Low Power UHF ATSC Transmitter/Translator 5W - 1.8kW
Specifications
Options
General Output Parameters
Standard
ATSC
Impedance
50 Ohms
Bandwidth
6 MHz
Test Signal
Internal PRBS-23
Frequency Range2
470 to 862 MHz
Frequency Stability
w/ GPS
0.2 ppm (max. 30 day variation)
0.001 ppm
Regulation of Output Power
3%
SNR
32 dB (typical), 30 dB (min.)
Adaptive Precorrection
DTVision
ATSC Mobile DTV(M/H)
Bandwidth Enhancement Technology (BET)
Web Interface
SNMP Interface
Input Parameters (Transmitter)
Connector Type
Main/Alternate with Auto Switch
Dual Exciter/Controller with Auto Switch
AC Surge Protector
GPS Receiver
Spare Parts Kit
Climate Controlled Outdoor Enclosure
Equipment Rack (Included with CU1000BxD and higher)
ASI Input
Output Coupler (Post-filter, included with CU1000BxD and higher)
Dual Power Supply (Model Specific)
Axciter Intelligent Modulator
BNC
Data Interface
Input Rate
19.39 Mbps, 6 MHz Channel
Input Interface
SMPTE 310M (ASI optional)
Other power levels available upon request
Consult factory for other frequencies, voltages or altitudes
Rackmount chassis are 19”(48 cm) wide, 25”(63 cm) deep.
Some dimensions do not include output filter. Consult Axcera
for filter dimensions
Input Parameters (Translator)
Frequency Range
54 to 862 MHz
Connector Type
BNC
Impedance
50 Ohms
Level
-78 to -8 dBm
White Noise Threshold of Errors
Better than 15.5 dB
Equalization Range
Better than ±45 μsec
Model Information
Model Numbers
CU5BTD
CU30BTD
CU50BTD
CU100BTD
CU125BTD
CU250BTD
CU500BTD
CU1000BTD
CU1600BTD
CU1800BTD
CU5BRD
CU30BRD CU50BRD
CU100BRD
CU125BRD
CU250BRD
CU500BRD
CU1000BRD
CU1600BRD
CU1800BRD
Power Output
5W
30W
50W
100W
125W
250W
500W
1kW
1.6kW
1.8kW
Power Consumption
180W
300W
475W
780W
900W
1.7kW
3.4kW
6.3kW
9.7kW
11kW
(measured after mask filter)
Input Power
Line Voltage
115V/230V+10%/-15%
230V+10%/-15%
Power Requirements
Single Phase, 50 or 60 Hz
Size (H x W x D)3
Inches
3RU
Centimeters
Weight (lbs/kg)
21/11
30/14
35/16
9RU
38/17
38/17
110/50
125/57
55 x 22 x 34
76 x 22 x 34
140 x 56 x 86
193 x 56 x 86
300/136
350/159
450/204
8500 ft. (2600m) AMSL
Maximum Altitude2
Operational Temperature Range
0 to +50ºC, derate 2ºC/1000 ft.
Operational Humidity Range
0% to 95% non-condensing
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.
0609R4
© 2009 AXCERA
All Rights Reserved
103 Freedom Drive, PO Box 525, Lawrence, PA 15055, USA
An Equal Opportunity Employer
t:+1 724-873-8100
f:+1 724-873-8105
www.axcera.com		
Innovator CX B UHF ATSC Tx

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File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.3
Linearized                      : No
Producer                        : PrimoPDF
Create Date                     : 2009:07:06 13:47:16-04:00
Modify Date                     : 2009:07:06 13:55:44-04:00
Title                           : Microsoft Word - Innovator CXB Series 5-500 Watt Transmitters Translators Technical Manual 6-15-09.doc
Creator                         : PrimoPDF http://www.primopdf.com/
Author                          : mountsj
Page Count                      : 69

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