UBS Axcera CHV4TD Users Manual

Instruction Manual

Innovator,

CHV0TD-1/RD-1 thru

CHV4TD/RD,

ATSC VHF High Band Transmitter/

Regenerative Translator

Axcera, LLC

103 Freedom Drive • P.O. Box 525 • Lawrence, PA 15055-0525, USA

Phone: [phone] • Fax: [phone]

www.axcera.com

• [e-mail]

RESTRICTIONS ON USE, DUPLICATION OR DISCLOSURE

OF PROPRIETARY INFORMATION

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

Copyright © 2011, Axcera

Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC Table of Contents
Transmitter/Regenerative Translator

Table of Contents

Introduction ......................................................................................................1

Manual Overview ............................................................................................1

Assembly Designators .....................................................................................1

Safety ...........................................................................................................1

Contact Information ........................................................................................3

Return Material Procedure ...............................................................................3

Limited One Year Warranty for Axcera Products..................................................4

System Description ..........................................................................................11

Unpacking, Installation and Maintenance ............................................................14

Unpacking ...................................................................................................14

Installation ..................................................................................................14

Drawer Slide Installation ............................................................................15

AC Input Connections .......................................................................................16

Input and Output Connections ...........................................................................17

J11 Power Monitoring Connections .....................................................................19

Maintenance ................................................................................................21

Initial On Site Turn On Procedure.......................................................................24

Typical System Operating Parameters ................................................................25

Typical Problems, Indications and Causes in Exciter/Driver Drawer ........................27

LCD Display and Front Panel LED Indicators ........................................................27

System Remote Connections to J12....................................................................29

LCD Front Panel Screens ...............................................................................32

Operation Screens ........................................................................................33

Device Details Screens - These are read only parameters. ....................................35

Device Setup Screens - These are read / write parameters. ..................................47

(Optional) Innovator CX Series Web Ethernet Interface Kit (1313100)....................73

Modulator Web Interface...................................................................................75

SNMP Interfaces ..............................................................................................80

Circuit Descriptions of Boards in the CHV0xD-1 & CHV0xD-4 System.....................81

(A1) 8 VSB Demodulator Board (1308275) - Only used with RD operation ........... 81

Overview..................................................................................................81

Microcontroller Functions............................................................................81

Jumper and DIP Switch Settings..................................................................81

(A2) Digital Modulator Board DM8C (1316332) .............................................82

(A5) ALC Board, Innovator CX Series (1315006) ..............................................82

(A6) Amplifier Assembly (1313959) – Used in the CHV0xD-1 Drawer ..................83

(A6-A1) VHF HB Pre-Driver Assembly (1313899) ..........................................83

(A6-A2) 50 Watt Amplifier Pallet, Italmec (1313484) .....................................83

(A6) 200 Watt Driver Amplifier Assembly (1315010 used w/Axciter Drawer or

1313912 used in all other applications) – Used in the CHVxD-4 ..........................83

(A6-A1) 50 Watt Amplifier Pallet, Italmec (1313484) .....................................83

(A6-A2) 500 Watt Amplifier Pallet, Italmec (1313581) ...................................84

(A7) Output Metering Detector Board (1313747) ..............................................84

(A8) Control Card, Innovator CX (1312543) .....................................................84

(A9 & A10) Power Supplies used in CHV0xD-1 and CHV0xD-4 ............................85

Circuit Description of External System Metering Board which is only used in

Transmitters with multiple external Amplifier Drawers ..........................................85

(A5) System Metering Board (1312666) ..........................................................85

Circuit Descriptions of Boards in the external VHF amplifier Drawer ........................ 86

(A7) Amplifier Control Board (1312260) ..........................................................86

(A10) Current Metering Board (1309130) ........................................................87

(A5) 2 Way VHF Splitter Board (1313941) .......................................................87

Instruction Manual, Rev. 1 i 4/11/11

Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC Table of Contents

Regenerative Translator System and Drawer

Transmitter/Regenerative Translator

(A2 & A3) 500 Watt LDMOS Amplifier Pallets (1313581) ....................................87

(A6) 2 Way VHF Combiner Board (1313969) ....................................................87

(A8 & A9) VHF Amplifier Drawer Power Supplies ...............................................88

Circuit Descriptions of Boards in the CHV500B/600B, 500/600 Watt ATSC Amplifier

Drawer ...........................................................................................................88

(A7) Amplifier Control Board (1312260) ..........................................................88

(A10) Current Metering Board (1309130) ........................................................89

(A5) 4 Way Splitter Board (1313938)..............................................................89

(A1, A2, A3 & A4) 500 Watt LDMOS Amplifier Pallets (1313581) ........................89

(A6) 4 Way Combiner Board (1313965) ..........................................................90

(A8 & A9) CHV500B/600B, Two 48 VDC/2250 Watt Power Supplies ....................90

System Set Up Procedure .................................................................................92

ALC Board Set-Up, Forward and Reflected Power Calibration for CHV0xD-4 systems

..................................................................................................................93

Forward and Reflected Power Calibration of Systems with one or more External

Amplifier Drawers .........................................................................................94

APPENDIX A: ........................................................................................................1

Innovator CHV0xD VHF High Band

Drawing List .........................................................................................................1

Instruction Manual, Rev. 1 ii 4/11/11

Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC Introduction
Transmitter/Regenerative Translator

Introduction

Manual Overview

This manual contains the description of the Innovator CHV0TD-1/RD-1 thru CHV4TD/RD
ATSC Transmitter or Regenerative Translator and the circuit descriptions of the boards,
which make up the system. The manual also describes the installation, setup and
alignment procedures for the system. Appendix A of this manual contains the system
drawings and parts lists for the Innovator Transmitter or Regenerative Translator
System. NOTES: 1) Information and drawings on the Axciter Digital Modulator, if part
of your system, are contained in the separate Axciter Instruction Manual. 2)
Information and drawings on the K-Tech receiver, if part of your system, are contained
in the separate K-Tech Instruction Manual. 3) If your system contains dual exciters with
a remote interface panel and Exciter control panel, information and drawings on the
system and panels are contained in the separate remote interface panel 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 drawer or assembly and that
connect between the drawers, racks and cabinets are labeled using markers. Figure 1 is
an example of a marked cable. There may be as few as two or as many as four Markers
on any one cable. These markers are read starting farthest from the connector. If there
are four Markers, the marker farthest from the connector is the system number such as
system 1 or transmitter 2. The next or the farthest Marker is the rack or cabinet “A”
number on an interconnect cable or the board “A” number when the cable is within a
drawer. The next number on an interconnect cable is the Drawer location or Board “A”
number. The marker closest to the connector is the jack or connector “J” number on an
interconnect cable or the jack or connector “J” number on the board when the cable is
within a drawer.

4 3 2 1

Marker Identification Drawing

Safety

The Innovator CX Transmitter or 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 system.

Hazardous Accessibility – Axcera has made attempts to provide appropriate
connectors, wiring and shields to minimize hazardous accessibility.

Circuit Breakers and Wiring – All circuit breakers and wire are UL and CE certified and
are rated for maximum operating conditions.

Instruction Manual, Rev. 1 1

Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC Introduction
Transmitter/Regenerative Translator

Single Point Breaker or Disconnect - The customer should provide a single point
breaker or disconnect at the breaker box for the main AC input connection to the
transmitter.

Transmitter Ratings - The transmitter ratings are provided in the text of this manual
along with voltage and current values for the equipment.

Protective Earthing Terminal – A main protective earthing terminal is provided for
equipment required to have protective earthing.

Read All safety Instructions – All of the safety instructions should be read and
understood before operating this equipment.

Retain Manuals – The manuals for the system should be retained at the system site for
future reference. Axcera provides two manuals for this purpose; one manual can be left
at the office while the other can be kept at the site.

Heed all Notes, Warnings, and Cautions – All of the notes, warnings, and cautions
listed in this safety section and throughout the manual must be followed.

Follow Operating Instructions – All of the operating and use instructions for the
system should be followed.

Cleaning – Unplug or otherwise disconnect all power from the equipment before cleaning.
Do not use liquid or aerosol cleaners. Use only a damp cloth for cleaning.

Ventilation – Openings in the cabinet and module front panels are provided for
ventilation. To ensure the reliable operation of the system, and to protect the unit from
overheating, these openings must not be blocked.

Servicing – Do not attempt to service this product yourself until becoming familiar with
the equipment. If in doubt, refer all servicing questions to qualified Axcera service
personnel.

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.

Instruction Manual, Rev. 1 2

Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC Introduction
Transmitter/Regenerative Translator

Contact Information

The Axcera Field Service Department can be contacted by PHONE at 724-873-8100 or by
FAX at 724-873-8105.

Before calling Axcera, please be prepared to supply the Axcera technician with answers to
the following questions. This will save time and help ensure the most direct resolution to
the problem.

1. What are your Name and the Call Letters for the station?

2. What are the model number and type of system?

3. Is the system digital or analog?

4. How long has the system been on the air? (Approximately when was the system
installed?)

5. What are the symptoms being exhibited by the system? Include the current front
panel LCD readings and what the status LED is indicating on the front panel of
the drawer. If possible, include the LCD readings before the problem occurred.

Return Material Procedure

To insure the efficient handling of equipment or components that have been returned for
repair, Axcera requests that each returned item be accompanied by a Return Material
Authorization Number (RMA#). The RMA# can be obtained from any Axcera Field
Service Engineer by contacting the Axcera Field Service Department at 724-873-8100 or
by Fax at 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.

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 724-873-8100.

Axcera can also be contacted through e-mail at [e-mail] and on the Web at

www.axcera.com.

Instruction Manual, Rev. 1 3

Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC Introduction
Transmitter/Regenerative Translator

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.

Instruction Manual, Rev. 1 4

Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC Introduction
Transmitter/Regenerative Translator



 HIGH VOLTAGE 

DO NOT ATTEMPT TO REPAIR OR TROUBLESHOOT THIS EQUIPMENT UNLESS
YOU ARE FAMILIAR WITH ITS OPERATION AND EXPERIENCED IN
SERVICING HIGH VOLTAGE EQUIPMENT. LETHAL VOLTAGES ARE PRESENT
WHEN POWER IS APPLIED TO THIS SYSTEM. IF POSSIBLE, TURN OFF
POWER BEFORE MAKING ADJUSTMENTS TO THE SYSTEM.

 RADIO FREQUENCY RADIATION HAZARD 

MICROWAVE, RF AMPLIFIERS AND TUBES GENERATE HAZARDOUS RF
RADIATION THAT CAN CAUSE SEVERE INJURY INCLUDING CATARACTS,
WHICH CAN RESULT IN BLINDNESS. SOME CARDIAC PACEMAKERS MAY BE
AFFECTED BY THE RF ENERGY EMITTED BY RF AND MICROWAVE
AMPLIFIERS. NEVER OPERATE THE TRANSMITTER SYSTEM WITHOUT A
PROPERLY MATCHED RF ENERGY ABSORBING LOAD OR THE ANTENNA
ATTACHED. KEEP PERSONNEL AWAY FROM OPEN WAVEGUIDES AND
ANTENNAS. NEVER LOOK INTO AN OPEN WAVEGUIDE OR ANTENNA.
MONITOR ALL PARTS OF THE RF SYSTEM FOR RADIATION LEAKAGE AT
REGULAR INTERVALS.

 WARNING!!!



Instruction Manual, Rev. 1 5

Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC Introduction
Transmitter/Regenerative Translator

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.

SKIN REDDENED: Apply ice cold water to
burned area to prevent burn from going
deeper into skin tissue. Cover area with a
clean sheet or cloth to keep away air. Consult
a physician.

SKIN BLISTERED OR FLESH CHARRED:
Apply ice cold water to burned area to
prevent burn from going deeper into skin
tissue.

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.

BURNS

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.

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.

Instruction Manual, Rev. 1 6

Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC Introduction
Transmitter/Regenerative Translator

dBm, dBw, dBmV, dBµµµµV, & VOLTAGE

EXPRESSED IN WATTS

50 Ohm System

WATTS PREFIX dBm dBw dBmV dBµV VOLTAGE

1,000,000,000,000 1 TERAWATT +150 +120
100,000,000,000 100 GIGAWATTS +140 +110
10,000,000,000 10 GIGAWATTS +130 +100
1,000,000,000 1 GIGAWATT +120 + 99
100,000,000 100 MEGAWATTS +110 + 80
10,000,000 10 MEGAWATTS +100 + 70
1,000,000 1 MEGAWATT + 90 + 60
100,000 100 KILOWATTS + 80 + 50
10,000 10 KILOWATTS + 70 + 40
1,000 1 KILOWATT + 60 + 30
100 1 HECTROWATT + 50 + 20
50 + 47 + 17
20 + 43 + 13
10 1 DECAWATT + 40 + 10
1 1 WATT + 30 0 + 77 +137 7.07V

0.1 1 DECIWATT + 20 - 10 + 67 +127 2.24V

0.01 1 CENTIWATT + 10 - 20 + 57 +117 0.707V

0.001 1 MILLIWATT 0 - 30 + 47 +107 224mV

0.0001 100 MICROWATTS - 10 - 40

0.00001 10 MICROWATTS - 20 - 50

0.000001 1 MICROWATT - 30 - 60

0.0000001 100 NANOWATTS - 40 - 70

0.00000001 10 NANOWATTS - 50 - 80

0.000000001 1 NANOWATT - 60 - 90

0.0000000001 100 PICOWATTS - 70 -100

0.00000000001 10 PICOWATTS - 80 -110

0.000000000001 1 PICOWATT - 90 -120

TEMPERATURE CONVERSION

°°°°F = 32 + [(9/5) °°°°C]

°°°°C = [(5/9) (°°°°F - 32)]

Instruction Manual, Rev. 1 7

Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC Introduction
Transmitter/Regenerative Translator

USEFUL CONVERSION FACTORS

TO CONVERT FROM TO MULTIPLY BY

mile (US statute) kilometer (km) 1.609347
inch (in) millimeter (mm) 25.4
inch (in) centimeter (cm) 2.54
inch (in) meter (m) 0.0254
foot (ft) meter (m) 0.3048
yard (yd) meter (m) 0.9144
mile per hour (mph) kilometer per hour(km/hr) 1.60934
mile per hour (mph) meter per second (m/s) 0.44704
pound (lb) kilogram (kg) 0.4535924
gallon (gal) liter 3.7854118
U.S. liquid
(One U.S. gallon equals 0.8327 Canadian gallon)
fluid ounce (fl oz) milliliters (ml) 29.57353
British Thermal Unit watt (W) 0.2930711
per hour (Btu/hr)
horsepower (hp) watt (W) 746

NOMENCLATURE OF FREQUENCY BANDS

FREQUENCY RANGE DESIGNATION

3 to 30 kHz VLF - Very Low Frequency
30 to 300 kHz LF - Low Frequency
300 to 3000 kHz MF - Medium Frequency
3 to 30 MHz HF - High Frequency
30 to 300 MHz VHF - Very High Frequency
300 to 3000 MHz UHF - Ultrahigh Frequency
3 to 30 GHz SHF - Superhigh Frequency
30 to 300 GHz EHF - Extremely High Frequency

LETTER DESIGNATIONS FOR UPPER FREQUENCY BANDS

LETTER FREQ. BAND

L 1000 - 2000 MHz
S 2000 - 4000 MHz
C 4000 - 8000 MHz
X 8000 - 12000 MHz
Ku 12 - 18 GHz
K 18 - 27 GHz
Ka 27 - 40 GHz
V 40 - 75 GHz
W 75 - 110 GHz

Instruction Manual, Rev. 1 8

Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC Introduction

0

-10

-20

-30

-40

-50

-60

-70

S

dB

Transmitter/Regenerative Translator

RETURN LOSS VS. VSWR

R
E
T
U
R
N

L
O
S

1.001 1.01 1.1 2.0

VSWR

Instruction Manual, Rev. 1 9

Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC Introduction
Transmitter/Regenerative Translator

ABBREVIATIONS/ACRONYMS

AC Alternating Current

AFC Automatic Frequency
Control

ALC Automatic Level Control

AM Amplitude Modulation

AGC Automatic Gain Control

ARD A-line, Regenerative
Translator, Digital

ATD A-line, Transmitter,
Digital

ATSC Advanced Television

Systems Committee (Digital)

AWG American Wire Gauge

BER Bit Error Rate

BRD B-line, Regenerative
Translator, Digital

BTD B-line, Transmitter,
Digital

BW Bandwidth

COFDM Coded Orthogonal Frequency

Division Multiplexing
modulation scheme

DC Direct Current

D/A Digital to Analog

DSP Digital Signal Processing

DTV Digital Television

dB Decibel

dBm Decibel referenced to

1 milliwatt

dBmV Decibel referenced to
1 millivolt

dBw Decibel referenced to 1 watt

FEC Forward Error Correction

FM Frequency Modulation

FPGA Field Programmable Gate

Array

Hz Hertz

ICPM Incidental Carrier Phase
Modulation

I/P Input

IF Intermediate Frequency

LED Light emitting diode

LSB Lower Sideband

LDMOS Lateral Diffused Metal Oxide

Semiconductor Field Effect
Transistor

MPEG Motion Pictures Expert
Group

NTSC National Television
Systems Committee (Analog)

O/P Output

PLL Phase Locked Loop

PCB Printed Circuit Board

QAM Quadrature Amplitude

Modulation

SMPTE Society of Motion Picture
and Television Engineers

VSB Vestigial Side Band

Instruction Manual, Rev. 1 10

Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC System Description
Transmitter/Regenerative Translator

System Description

The Innovator CHV transmitter systems are of two different types. They are
either Regenerative Translators example: CHV0RD-4, or DTV Transmitters
example: CHV0TD-4. The Regenerative Translator (RD) accepts an RF On
Channel signal (-75 to –8 dBm) and converts it to a DTV RF On Channel output
signal. The DTV System (TD) takes a SMPTE-310 or DVB-ASI input and converts
it to a DTV RF On Channel output signal. The output power of either
configuration is typically up to 200 Watts ATSC using a single drawer. For
powers above 850W additional amplifiers may be paralleled. Typical
configurations; 1600 Watts ATSC with two Amplifier drawers, 2000 Watts ATSC
with three Amplifier drawers, 3000 Watts ATSC with four Amplifier drawers, 4000
Watts ATSC with six Amplifier drawers, and 6000 Watts ATSC with eight Amplifier
drawers. The Innovator CHV transmitter system provides linear and nonlinear
correction capability for the transmission path as well as internal test sources
that are used during initial system installation.

The CHV0xD-1 and CHV0xD-4 are used as the driver drawer for higher power
systems and contain the DM8C Digital Modulator (1316332). Systems with an
external Axciter Modulator Drawer the DM8C Digital Modulator and is replaced by
the (A3) Down-converter Board (131103). The amplifier assembly (A6), (A7)
Output Metering Detector Board (1313747), (A8) the Innovator CX Control Board
(1312543), (A9) the +5V, ±12V Power Supply and (A10) the +28V/+42VDC
Power Supply are also contained in the drawer. The RD kit (1310182) supplies
the (A1) 8 VSB Demodulator Board (1308275) to the drawer to make it a
regenerative translator.

The type of (A6) Amplifier assembly used in the drawer changes as the output
power of the system changes. The Amplifier Assembly (1315013 or 1313959) is
used in CHV0xD-1 systems and the Amplifier Assembly (1315010 or 1313912) is
used in CHV0xD-4 systems.

The (A10) Power Supply Assembly also changes as the output power of the
system changes. A +48V/300W Power Supply is used in CHV0xD-1 systems and
a +48V/1100W Power Supply is used in CHV0xD-4 systems.

When configured as an ATSC Transmitter (TD) with internal DM8C modulator, the
TS input at (J1) can be SMPTE-310M or DVB-ASI. When configured to operate as
a Regenerative Translator (RD), the DTV ON Channel RF Input at (J1) (-8 to -79
dBm) connects to the Tuner Input Jack on (A1) the 8 VSB Demodulator Board
(1308275) supplied with the (RD) kit. The 8 VSB Demodulator Board (1308275)
converts the DTV input to a SMPTE-310 output at (J13) that connects to the input
of the DM8C Digital Modulator Board (1316332). The rest of the drawer operates
the same for both the RD and TD systems.

The RF output of the DM8C modulator board can be any frequency from 30 –
1000MHz in steps of 1 Hz. This output connects to J1 on the ALC board
(1315006). The RF on channel signal is fed to the ALC Board which is used to
control the drive power to the RF amplifier chain. In a CHV0xD-1, the RF is
connected to the (A6) Amplifier Assembly (1315024 or 1313959). This Amplifier
assembly is made up of (A6-A1) the VHF HB Pre-Driver Amplifier (1313899) and
(A6-A2) the 50 Watt digital amplifier pallet (1313484). The assembly has
approximately 36 dB of gain. The amplified output at approximately +38 dBm

Instruction Manual, Rev. 1 11

Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC System Description
Transmitter/Regenerative Translator

connects to the (A7) Output Metering Detector Board (1313747) which provides
forward (2V=100%) and reflected (2V=25%) power samples to the CX Control
Board (1312543) for metering and monitoring purposes. An output power
sample is also supplied to the front panel sample jack J15 which is a 50Ω BNC
type. The typical sample value in a CHV0xD-1 or CHV0xD-4 is approximately
60dB down from the output power level of the drawer. The RF output is cabled
to J2 the “N” connector RF output jack on the rear panel of the drawer. In the
single drawer systems the output connects to a digital mask filter, low pass filter
(if present), and then the antenna for your system. In systems with external
amplifiers, the RF output from the driver drawer is connected to J1 on the rear
panel of the amplifier drawer. The RF is cabled to J1 on the amplifier heat-sink
assembly in the amplifier drawer. In systems with more than one external
amplifier the RF is connected to a splitter and then to the inputs of the amplifier
drawers.

Systems with one external amplifier in the system will be configured with a
CHV0xD-1 driver drawer. The external VHF amplifier can be configured with two,
three or four RF pallets, depending on the desired RF output power and system
configuration. The control and operating parameters of the external amplifier are
displayed on the LCD Screen of the driver drawer. In the external amplifier
drawer the RF input signal to the drawer is at J1 on the rear panel of the drawer
that is cabled to J1 on the splitter and then to J1 on the amplifier pallets. The
amplifier drawer may contain one or two +48VDC power supplies. The output of
the supplies is connected through a current metering board to the two, three or
four amplifier pallets, depending on the configuration. In systems with the N+1
power supply option, two +48VDC power supplies are diode-or together to
provide the operating voltage through the current metering board to two
amplifier pallets. If one power supply should malfunction, the other power supply
will provide the necessary power to maintain full output power. Each pallet has
approximately 15 dB of gain and is connected to a combiner before it is cabled to
J2 the 7/16 DIN RF output jack of the drawer. The combiner supplies a forward
and a reflected power sample to the amplifier control board for metering and
monitoring purposes. The typical sample value at J6, a 50Ω BNC jack located on
the front panel of the amplifier drawer, is approximately 65dB down from the
output power level of the drawer.

Systems with higher output power require multiple amplifier drawers to be used
along with splitters and combiners to produce the desired output. A System
Metering Board (1312666) provides forward, reflected, over-temperature and
other parameters to the exciter/driver drawer from the external power amplifier
chain. Refer to the system documentation provided with your system for more
detailed drawings and configurations. The CHV6TD is made up two cabinets one
of which contains a driver drawer, a three way splitter, three amplifier drawers
and a three way combiner with reject load. The other cabinet contains a three
way splitter, three amplifier drawers and a three way combiner with reject load.
The outputs of the amplifier cabinets are combined in a two way combiner with
reject load. The CHV8TD is made up two cabinets one of which contains a driver
drawer, a four way splitter, four amplifier drawers and a four way combiner with
reject load. The other cabinet contains a four way splitter, four amplifier drawers
and a four way combiner with reject load. The outputs of the amplifier cabinets
are combined in a two way combiner with reject load. The reject loads in the
multi-amplifier systems have thermal switches connected to them which monitor

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Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC System Description
Transmitter/Regenerative Translator

the temperature of the load and provide the over-temperature fault, if it occurs,
through the system metering board to the exciter/driver drawer.

The on-channel RF output of the amplifier drawer either connects directly to the
digital mask filter and low pass filter (if present), and then to the antenna in
single amplifier systems or to a combiner, the digital mask filter, low pass filter
(if present), output coupler and finally to the antenna in multiple amplifier
systems. The output coupler provides a forward and a reflected power sample to
the system metering board which detects the samples and supplies the forward
and reflected power levels to the exciter/driver drawer for use in the metering
circuits.

NOTE: Systems with the DM8C Modulator will have two samples for the adaptive
equalization process, the Pre-Filter and the Post-Filter Samples.

Pre-Filter Sample (Non-Linear Distortion) NOTE: Only found in systems with
a DM8C modulator.

The pre-filter sample from the (A5) coupler connects to J3 on the exciter/driver
drawer. The level must be between -10 to +10 dBm.

Post-Filter Sample (Linear Distortion) NOTE: Only found in systems with a
DM8C modulator.

A forward power sample, post filter sample, from the (A9) coupler at the output
of the DTV filter connects to J4 on the exciter/driver drawer. The level must be
between -10 to +10 dBm.

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Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC Unpacking, Installation &
Transmitter/Regenerative Translator Maintenance

Unpacking, Installation and Maintenance

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.

A1

Exciter/Driver

A2

Power Amplifier

A3

Power Amplifier

Figure 1: CHV2TD/RD Front View Typical Racking Plan

Installation

The Innovator CX series transmitters are designed for simple installation. Expensive test
equipment is not required for installation and set up and to keep a system operational. An
information decal, with Voltage Range, Current Range, Manufacturer, Model and ratings is
attached to the rear panel of the stand alone drawer or if mounted in a cabinet, to the top
of the frame above the door facing the rear of the cabinet. 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

Instruction Manual, Rev. 1 14

Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC Unpacking, Installation &
Transmitter/Regenerative Translator Maintenance

The Innovator CX series systems are 17” (43.2cm) wide standard rack mountable drawers.
They are supplied with side mounted drawer Slides for ease of installation and removal.
The CHV0TD/RD-1 and CHV0TD/RD-4 systems are 3 RU, 5.25” (13.3cm) high. The external
amplifier used in CHV1TD/RD-1, CHV1TD/RD-2, and CHVTD/RD-3 systems is 9 RU 15.75”
(40cm) high, includes 3 RU 5.25” (13.3cm) for the driver and 6 RU 10.5” (26.7cm) for the
external amplifier drawer. The CHV2TD/RD systems are typically mounted in a 55”
(139.7cm) cabinet. The CHV3TD/RD and CHV4TD/RD systems are typically mounted in a
76” (193cm) cabinet. The CHV3TD/RD systems are 21 RU, 36.75” (93.3cm) high, which is
3 RU, 5.25” (13.3cm) for the driver and 18 RU, 31.5” (80cm) for the three Innovator CHV
amplifier drawers. The CHV4TD/RD systems are 27 RU, 47.25” (120cm) high, which is 3
RU, 5.25” (13.3cm) for the driver and 24 RU, 42” (106.7cm) for the four Innovator CHV
Series amplifier drawers.

Also needed for FCC compliance operation is an ATSC filter on the broadcast channel that
connects to the output of the system. Space must be provided for the ATSC filter,
combiners, reject loads, and low pass filter (if present) whose dimensions will vary
depending on manufacturer and channel. Refer to the vendor supplied information included
with your system for specific dimensions. Make sure that the space provided for the CX
series equipment is sufficient and includes the splitters, combiners, reject loads and external
filters. Check that any additional equipment, which is included in the system that extends
above or to the side of the mounting rack, has sufficient clearance space. Refer to the
custom racking plan for the system for detailed information.

Drawer Slide Installation

If the system is pre-mounted in a cabinet skip this section. Locate the drawer slides included
in the installation material for your system. See Figure 2 and the manufacturers instructions
included with the drawer slides for the cabinet mounting instructions. Install the left drawer
slide into the left side of the cabinet (as viewed from the rear). Allow 3 RU or 5.25” (13.3cm)
of space between the drawers for a CHV0xD-1 or CHV0xD-4 system. In high power systems,
allow a space of 3 RU, 5.25” (13.3cm) for the driver and 6 RU, 10.5” (26.7cm) for each of the
Innovator CHV external amplifier drawers. Space must also be provided for the splitter,
combiner, ATSC filter and low pass filter (if present). The dimensions will vary depending on
the manufacturer and the output power. Secure the left drawer 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 drawer slide on the right side of the cabinet (as viewed from the rear) making sure
that it is aligned with the drawer 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 drawers if purchased. With both slides in place,
slide the drawer or drawers into the cabinet.

Figure 2: Cabinet Slides

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Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC Unpacking, Installation &
Transmitter/Regenerative Translator Maintenance

AC Input Connections

The CHV0xD-1 will operate on any AC voltage from 95 – 253VAC, the CHV0xD-4 single
drawer systems will operate with an input voltage of 185-253VAC. The customer should
provide a single point disconnect for the main AC input connection to the transmitter. Check
that the AC switch located on the rear of the drawer above the AC power jack is OFF.
Connect the AC power cord supplied with the drawer from J6 on the rear of the drawer to the
AC source.

Check that the ON/OFF circuit breaker(s) for the amplifier drawer(s) located on the rear
panel on either side of the AC power jack are OFF. Connect the AC power cord(s) supplied
with the drawer(s) from J10 on the rear of the drawer to the 230 VAC source. Refer to Table
1 for typical voltage and current requirements. More detailed information refer to the system
drawings or interconnects that came with your system. Additional information will be
provided on the data label located on the rear of the rack or cabinet.

If the system is mounted in a rack an AC distribution box wired to a quad receptacle box is
used to connect the AC to the individual drawers. The AC distribution box is mounted on the
upper right side of the rack accessed through the back of the rack. The main AC input for a
transmitter is 195-253VAC, with at least 10Amps, 50/60Hz. The customer should provide a
single point disconnect for the main AC input that connects to the transmitter. The AC input
lines connect inside the AC distribution box by first removing the two screws that hold the
cover plate to the front of the AC distribution box. Then connect the three wire main AC input
to the input lugs, L1 to L1, L2 to L2 and Ground to Ground. The power amplifier drawer and
the quad receptacle box connect through AC power cords directly to the AC distribution box.
The AC power to the optional receiver drawer and the exciter/driver drawer are connected
through AC power cords that plug into the quad receptacle box.

If the system is mounted in a cabinet it may contain an AC distribution panel with breakers to
distribute the AC power to the individual drawers. The AC distribution panel is mounted
facing the rear of the cabinet and accessed through the back of the cabinet. The main AC
input for a transmitter is, 195-253VAC. The customer should provide a single point
disconnect for the main AC input that connects to the transmitter. The AC input lines connect
to the AC distribution panel by first removing the four #8 screws that hold the cover plate to
the front of the AC distribution panel. Then connect the three wire main AC input to the input
lugs located at the top left of the AC distribution panel, L1 to L1,

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Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC Unpacking, Installation &
Transmitter/Regenerative Translator Maintenance

L2 to L2 and Ground to the Ground lug on the left. The AC distribution panel in a system with
two PA’s has three circuit breakers that distribute the AC to the individual drawers, which are
the Exciter and the two power amplifier drawers. The circuit breakers, which are accessed
through the rear door of the cabinet, supply the AC though AC line cords, that connect to the
AC input jacks mounted on the rear panels of the drawers. CB1 is a 30 Amp circuit breaker
which supplies the AC to the (A2), top, Power Amplifier A drawer. CB2 is a 30 Amp circuit
breaker which supplies the AC to the (A3), bottom, Power Amplifier B drawer. CB3 is a 10
Amp circuit breaker which supplies the AC to the (A1) Exciter/Driver drawer. A maximum of
four 30 Amp circuit breakers for four amplifier drawers and two 10 Amp circuit breakers for
two Exciter/Driver drawers can be installed in the AC Distribution Panel. All other systems are
configured with more or less circuit breakers to provide the protection for the AC to the
individual exciter, exciter driver and amplifier drawers.

Table 1: CHVxD series ATSC Digital Systems Typical AC Input and Current Requirements.

System O/P Power

CHV0xD-1 20 Watts 200 Watts

CHV0xD-4 200 Watts 1000 Watts 230 VAC

CHV1xD-1 400 Watts 2200 Watts 230 VAC

CHV1xD-2 600 Watts 2700 Watts 230 VAC

CHV1xD-3 850 Watts 3000 Watts 230 VAC

CHV2xD-1 1000 Watts 5100 Watts 230 VAC

CHV2xD-2 1600 Watts 7200 Watts 230 VAC

CHV3xD 2200 Watts 10000 Watts 230 VAC

CHV4xD 3000 Watts 14700 Watts 230 VAC

CHV6TD 4500 Watts 19600 Watts 230 VAC

CHV8TD 6000 Watts 29000 Watts 230 VAC

Power

Consumption

Voltage Current

115 VAC 1.8 Amps
230 VAC 1 Amp

4.4 Amps to the
Cabinet

9.6 Amps to the
Cabinet

11.8 Amps to the
Cabinet

13.1 Amps to the
Cabinet

22.2 Amps to the
Cabinet

31.3 Amps to the
Cabinet

43.5 Amps to the
Cabinet

63.9 Amps to the
Cabinet
Exciter
Amp Cab
Amplifier
Cabinet
Exciter
Amp Cab
Amplifier
Cabinet

43.5
Amps

41.8
Amps

63.9
Amps

62.2
Amps

to the
Cabinet

Input and Output Connections

The input and output connections to the system are made to the jacks mounted on the rear
panels of the CHV0xD-1 and CHV0xD-4 systems. Each exciter/driver will accept a SMPTE­310 or ASI (BTD) input and output a digital RF ON Channel signal. Refer to Tables 2 & 2A
that follow for the locations and information on the jacks and connectors.

Instruction Manual, Rev. 1 17

Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC Unpacking, Installation &

J1

J2

J11

J12

J10

J6

J9

J7

J13

J14

J

4 J5

Transmitter/Regenerative Translator Maintenance

Figure 2A: Rear View CHV exciter/driver

Table 2A: Connections for the CHV20B, CHV200B and the driver for the CHV400B & higher
power systems

Port Type Function Impedance

J1 BNC

Input A: On Channel RF Input (BRD) –75 to –8 dBm or SMPTE­310 Input/ASI (TD)

50 Ohms

J3 BNC Pre-filter sample for DM8C modulator. -10 to +10 dBm 50 Ohms

J4 BNC

SMPTE-310 Output (RD Only) Normally jumpered to J5. Post­filter sample for DM8C modulator. -10 to +10dBm

50 Ohms

BNC SMPTE-310 Input (RD Only) Normally jumpered to J4. 50 Ohms

J5

TNC GPS Antenna Input (Only used with Internal GPS Kit) 75 Ohms

J6 BNC

10 MHz Input: Optional External 10 MHz Reference Input or 10

MHz input from J12 on Axciter Drawer. 50 Ohms
J7 BNC 1 PPS Input: Optional External 1 PPS Reference Input 50 Ohms
J9 N RF Output: On Channel RF Output 50 Ohms

J10 IEC

AC Input: AC input connection to 85-264VAC Source and

On/Off circuit breaker

N/A

Power Monitoring: Interface to System and external amplifier

drawers, if present. Also provides an interlock for the Reject

Load (if used). If not used, in systems with no external

amplifier, a jumper from J11-6 to J11-9 needs to be in place.

N/A

J11

9 Pos

Male D

Refer to Table 2B which follows for information on connections.

J12

15 Pos

Female D

J13 RJ-45

J14 RJ-45

Remote: Remote control and status indications. Refer to Table

7A on pages 27 & 28 for information on the connections.

Serial: Provides communication to System and to external

amplifier drawers, if present.

Ethernet: Optional Ethernet connection. May not be present in

your drawer.

N/A

N/A

N/A

J15

Front

Panel

J16
Front
Panel

BNC

9 Pos

Female D

RF Sample: Output Sample from Output Detector Board.
In a CHV200B the sample level at J15 is approximately 60dB

50 Ohms

down from the output power level of the drawer.

Serial: Used to load equalizer taps into the modulator. N/A

NOTES: 1) If your 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 exciter/driver.

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Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC Unpacking, Installation &
Transmitter/Regenerative Translator Maintenance

2) If your system contains an Optional K-Tech receiver, connect the RF from the
receive antenna or one output of the splitter to the input jack J1 on the rear panel
of the K-Tech receiver. Connect the SMPTE-310 Output from the SMPTE 310 Out
jack J2 on the rear panel of the K-Tech receiver to the input jack J5 on the rear
panel of the exciter/driver Drawer. 3) If the system contains the optional K-Tech
back up system, the K-Tech receiver is bypassed by using the second output of the
splitter that connects to J1 on the rear panel of the exciter/driver and connecting a
jumper from J4 to J5, after removing the cable from the K-Tech receiver, on the
rear panel of the exciter/driver. This configuration uses the 8VSB demodulator
board in the exciter/driver drawer to produce the SMPTE-310 signal.

J11 Power Monitoring Connections

In systems with one or more external amplifiers, J11 is used to communicate the output
forward and reflected metering voltages back to the driver. J11 is connected directly to the
external amplifier when there is only one external amplifier and is connected through the
system metering module when multiple external amplifiers are used. In multiple external
amplifier systems there are thermal switches mounted on the reject loads of the combiner,
and the Reject load interlock is connected to the thermal switches and is used to shut down
the system if the reject load overheats. In systems with no external amplifier, the only
connection used is the Reject Load Interlock, which must be connected to Supply Return
using a jumper from J11-6 to J11-9.

Table 2B: J1 9 Pos Male “D” Connector

J11

Pin

1 +12VDC
2 System Forward Power
3 System Reflected Power
4 System Aural Power
5 Remote Spare Input

Reject Load Interlock. (If not used, in systems with no external amplifier, must

6

be jumpered to J11-9)
7 System Serial +
8 System Serial -

Supply Return (If Reject Load Interlock is not used, in systems with no external
9

amplifier, must be jumpered to J11-6)

Function

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Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC Unpacking, Installation &

J1

J3

J4

J2

CB1

Transmitter/Regenerative Translator Maintenance

CB2

J5

Figure 4: Rear View CHV External Amplifier Drawer

Table 3: Connections for the External Amplifier Drawer

Port Type Function Impedance

J1 N RF Input: On Channel RF from CHVB driver drawer 50Ω

7/16”

J2

(1.1cm)

RF Output: On Channel RF Output 50Ω

Din

J3 IEC AC Input: AC input connection to 230VAC Source N/A

J4 9 Pos D

Remote: Amplifier Control Interface
(Connects to J11 on the exciter/driver drawer)

N/A

J5 RJ-45 Serial data N/A

J8
Front
Panel

BNC

RF Sample: Output Sample from Combiner thru Control
Board. In a CHV500B, the sample level is approximately
70dB down from the output power level of the drawer.

50Ω

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 exciter/driver. If used, connect the external 1 PPS
reference input to the 50Ω BNC 1 PPS input jack J7 located on the rear panel.

In Regenerative Translator (RD) systems there may be a SMPTE-310 loop-thru from the
output of the Demodulator Board at J4, mounted on the rear panel of the transmitter or
driver drawer to the input to the Modulator Board at J5 mounted on the rear panel of the
transmitter. There is normally a jumper installed from J4 to J5. To feed SMPTE-310 directly
to the Modulator Board remove the jumper and insert SMPTE-310 into J5. This is only used
in Translator (RD) systems not Transmitter (TD) systems.

The digital RF ON Channel output of the exciter/driver is at J9 the 50Ω “N” connector RF
output jack located on the rear panel. The output of the drawer at J9 connects to the low
pass (if present) digital mask filter and then to the antenna for your system. In higher
power systems the output of the driver drawer at J9 is connected to J1 the 50 Ohm “N”
connector RF input jack located on the rear panel of the external amplifier or to a splitter in
multiple amplifier systems. In systems with one external amplifier, check that the system
power metering interface cable is connected from J11 the 9 position “D” connector located
on the rear panel of the driver drawer to J4 the 9 position “D” connector located on the rear
panel of the amplifier drawer. This cable provides the control, status and operating
parameters of the amplifier drawer to the driver drawer. In systems with more than one

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Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC Unpacking, Installation &
Transmitter/Regenerative Translator Maintenance

external amplifier, the output of the driver drawer is split and connected to J1 the “N” type
connector RF input jack on the amplifier drawers. Check that the system power metering
interface cable is connected from J11 the 9 position “D” connector located on the rear panel
of the driver drawer to J9 the 9 position “D” connector located on the System Metering
Board. Also check that the serial connection is cabled from the RJ-45 connector J13 on the
driver drawer to the RJ-45 connector J1 on the system metering board. The system
metering board provides serial RJ-45 connections at J2 and J5 that are cabled to the RJ-45
serial port J5 on the rear panel of the amplifier drawers. These cables provide the control,
status and operating parameters of the amplifier drawers to the driver drawer through the
System Metering Board.

The digital RF ON Channel output of the amplifier drawer is at J2 the 50Ω 7/16 DIN
connector RF output jack located on the rear panel that connects directly to the digital mask
filter, the low pass filter (if present) and then to the antenna for your system in single
amplifier systems. In multiple amplifier drawer systems the outputs of the drawers connect
to a combiner and then the digital mask filter, the low pass mask filter (if present), the
output coupler and finally to the antenna for your system. The output coupler provides
forward and reflected power samples that are cabled to the System Metering Board at J8
reflected and J3 forward. Also connected to the system metering board at J10-6 & 9 is the
output of the over-temperature switch mounted to the reject load that is used as the reject
interlock by the system. The samples and interlock are fed through J9 on the system
metering board to J11 on the driver drawer.

This completes the connections of the system.

Maintenance

Innovator CX series transmitters are designed with components that require little or no
periodic maintenance except for the routine cleaning of the fans and the front panels of the
modules and the periodic check of general tightness of hardware.

It is recommended that periodically, the time interval depends on the amount of movement
the cabinet receives, all mounting hardware, holding drawer slides, shelving and mounting
plates inside the cabinet are checked for tightness. All screws and bolts that are accessible
should be tightened initially when the transmitter is received and periodically thereafter if the
transmitter is moved by vehicle. All coaxial connectors, hard-line connections and hardware
holding combiners, splitters, or any other mounted items should be checked and tightened.
The amount of time between cleanings of the drawers and cabinets depends on the conditions
within the transmitter room. While the electronics have been designed to function even if
covered with dust, a heavy buildup of dust, dirt, or insects will affect the cooling of the
components. This could lead to a thermal shutdown or the premature failure of the affected
drawer. When the front panels of the drawers become dust covered, the drawer should be
pulled out and any accumulated foreign material should be removed.

NOTE: To remove the CX series transmitter from the cabinet, the input and output cables
must be removed from the rear of the transmitter before the drawer can be pulled out
completely from the cabinet.

A vacuum cleaner, utilizing a small, wand-type attachment, is an excellent way to suction out
any dirt from the drawer and cabinet. Alcohol and other cleaning agents should not be used
unless you are certain that the solvents will not damage components or the silk-screened
markings on the drawers and boards. Water-based cleaners can be used, but do not saturate
the components. The fans and heatsinks should be cleaned of all dust or dirt to permit the
free flow of air for cooling purposes. It is recommended that the operating parameters of the

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Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC Unpacking, Installation &
Transmitter/Regenerative Translator Maintenance

transmitter be recorded from the LEDs and the LCD system metering on the front panel of the
drawer at least once a month to be used for comparison purposes in case of a failure. It is
suggested that this data be retained in a rugged folder or envelope and stored near the
transmitter.

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Transmitter/Regenerative Translator Maintenance

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Instruction Manual, Rev. 1 23

Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC
Transmitter/Regenerative Translator w/DM8C Modulator Interface Description

Initial On-Site Turn On Procedure

After the Innovator CHV series drawer or drawers are installed and all input, output
and AC connections are made, the system is ready for the initial on site turn on.
Check that the output of the exciter/driver drawer is connected to an appropriate
rated load or to the digital mask filter, low pass filter (if present), and the antenna
for your system. If your system contains external amplifiers, check that the output
of the amplifier drawer or the combiner assembly is connected to an appropriate
rated load or to the digital mask filter and the antenna for your system. Check that
the main AC power to the System is ON. NOTE: If your system is mounted in a
cabinet and contains an Optional UPS, turn on the UPS.

Locate the exciter/driver drawer and push ON the switch located on the rear panel of
the transmitter near the AC power jack. The fan mounted on the rear panel of the
drawer should operate when the AC is applied. If your system contains external
amplifiers, push ON the switch located on the rear panel of the driver drawer and also
switch ON the ON/OFF circuit breaker(s) located on the rear panel of the amplifier
drawer(s) mounted on each side of the AC input power jack. The small fan mounted
on the rear panel of the driver drawer should operate and the two fans mounted in
the amplifier drawer should operate when AC is applied. The large fan mounted in the
rear panel of the system or driver drawer will operate when the A10 switching supply
is enabled.

Place the system into Operate. The Operate/Standby LED and Status LEDs on the
exciter/driver should be Green indicating the system is in Operate and performing
normally. Both fans (Note: Some models may only have one fan on the exciter/driver)
should be operating. The Operate/Standby LED showing Amber indicates the System
is in Standby. The Status LED showing a blinking Red LED indicates an Event (Fault)
is occurring now. The Status LED showing Amber indicates that an Event (Fault)
occurred since the last time the Event (Fault) indications were reset.

If your system contains external amplifiers the Enable LED and Status LEDs on the
amplifier drawer 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 Events (Faults) in the 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 an Event (Fault) is occurring now. If the Status
LED shows Amber it indicates that an Event (Fault) occurred since that last time the
Event (Fault) indications were reset. The output power is factory set according to
customer request and does not need adjusted. If a problem occurs, call Axcera field
support at 724-873-8100 for information on modifying the power level of the
system.

NOTE: The RF System Interlock is provided on J12, a 15 position “D” connector,

located on the rear panel of the exciter/driver. The RF System Interlock at
J12-5 provides the customer with a means of connecting the system to
protection circuits, for the loads, thermal switches, combiners, or the
antenna, in the output of your system, that will place the system in Standby
if the protection circuit opens. The Reject Load Interlock is provided at J11,
a 9 position “D” connector. J11-6 provides the customer with a means of
connecting the system to protection circuits, for the reject load in multiple
amplifier systems, which will place the system in Standby if the protection
circuit opens. If the interlocks are not used in your system, a plug with a
jumper from J12-5 to J12-15, ground, for RF system Interlock and another

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Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC
Transmitter/Regenerative Translator w/DM8C Modulator Interface Description

plug with a jumper from J11-6 to J11-9, for Reject Load Interlock, need to
be connected. These jumpers provide the RF System and Reject Load
Interlocks, which allow the system to go to operate. Without the jumpers,
the system will remain in Standby.

Typical System Operating Parameters

Typical Operating Parameters for a CHV0TD-1

Parameter Typical Reading

Forward Power 100%
Reflected Power <5%
Power Supply Voltage 48 Volts
Heatsink Temperature 20º to 30º F/15º to 20º C above ambient

temperature

Pin Attenuator Voltage 1 Volt to 5 Volts

Typical Operating Parameters for a CHV0TD-1 used as driver

Parameter Typical Reading

Forward Power 20-70% (Depending on output power level of

system)
Reflected Power <5%
Power Supply Voltage 48 Volts
Heatsink Temperature 20º to 30º F/15º to 20º C above ambient

temperature
Pin Attenuator Voltage 1 Volt to 5 Volts

Typical Operating Parameters for a CHV0TD-4

Parameter Typical Reading

Forward Power 100%
Reflected Power <5%
Power Supply Voltage 48 Volts
Heatsink Temperature 20º to 30º F/15º to 20º C above ambient

temperature

Pin Attenuator Voltage 1 Volt to 5 Volts

Typical Operating Parameters for a CHV0TD-4 used as a Driver

Parameter Typical Reading

Forward Power 20-70% (Depending on output power level of

system)
Reflected Power <3%
Power Supply Voltage 48 Volts
Heatsink Temperature 20º to 30º F/15º to 20º C above ambient

temperature
Pin Attenuator Voltage 1 Volt to 5 Volts

Typical Operating Parameters for the external Amplifier Drawer(s)

Parameter Typical Reading

Forward Power 100%
Reflected Power <5%
Power Supply Voltage 48 Volts
Heatsink Temperature 77º to 104º F/25º to 40º C above ambient

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Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC
Transmitter/Regenerative Translator w/DM8C Modulator Interface Description

temperature

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