OUSCHV4TD3000-Watt VHF Digital Transmitter

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:
7248738100
•
Fax:
7248738105
www.axcera.com
•
[email protected]











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
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conditional
use
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document
and
this
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disclosed
herein.

Copyright
©
2011,
Axcera
Innovator CHV0TD/RD-1 through CHV4TD/RD ATSC Table of Contents Transmitter/Regenerative Translator
Instruction Manual, Rev. 1 i 4/11/11
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
CHV0xD1
&
CHV0xD4

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 (A6A1)
VHF
HB
PreDriver
Assembly
(1313899) ..........................................83 (A6A2)
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 (A6A1)
50
Watt
Amplifier
Pallet,
Italmec
(1313484).....................................83 (A6A2)
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) ........…

Text truncated - open the document above for the full version.

Axcera-CHV4TD FCC Equipment Authorization Report Certification of Test Data 5/21/2012 9-1 9. CERTIFICATION OF TEST DATA This equipment has been tested in accordance with the requirements contained in the appropriate Commission regulation. To the best of my knowledge, these tests were performed using measurement procedures consistent with the industry or Commission standards and demonstrate that the equipment complies with the appropriate standards. Each unit manufactured, imported or marketed, as defined in the Commission's regulations, will conform to the sample(s) tested within the variations that can be expected due to quantity production and testing on a statistical basis. I further certify that the necessary measurements were made by Axcera, LLC, 103 Freedom Drive, P.O. Box 525, Lawrence, PA 15055-0525

May 16, 2012 Intertek Testing Services NA, Inc. 70 Codman Hill Road Page Boxborough, MA 01719 Dear Intertek: Axcera is submitting this FCC Equipment Authorization report for the CHV4TD, a 3000-watt High Band VHF digital television transmitter. We are applying for a low- power television, type acceptance approval for this VHF transmitter. The FCC identifier selected for this product is OUSCHV4TD. The CHV4TD is a complete 3000-watt VHF solid-state digital transmitter. It operates at a nominal output power of 3000 watts average, while meeting or exceeding the FCC Part 74 requirements. The transmitter may also be operated at 300 watts average with equivalent or improved performance. The enclosed application and test data report are intended to demonstrate compliance with FCC guidelines. The enclosed report uses a format that we currently use to file directly with the FCC. We hope that this format will also be suitable to Intertek. Please contact me if you have any questions or if you need additional information. I can be reached by fax at (724) 873-8105 or phone at (724) 873-8100, extension 201.

1(1) 103 Freedom Drive P.O. Box 525 Lawrence, PA 15055-0525 Attention: Application Examiner May 16, 2012 Re: Request for confidentiality Applicant: Axcera, LLC FCC ID: OUSCHV4TD To whom it may concern, Request is hereby submitted by Axcera LLC to withhold permanently from public review certain portions of the application for equipment certification for the referenced FCC identifier. This request for confidentiality is made pursuant to 47 CFR 0.457(d) and 0.459 of the FCC Rules. In particular, the following sections of the application are to be kept permanently confidential: • Schematics • Detailed Block diagrams Rationale for request for confidentiality: Axcera has invested considerable time and materials in research and development to produce the referenced product. Disclosure of the permanently confidential portions of this application to competitors would not only give them significant competitive advantages in developing similar products, but would also disclose successful implementation of unpublished, leading edge technology developed by us.

Axcera-CHV4TD FCC Equipment Authorization Report External Photos 5/21/2012 2-1 2. EXTERNAL PHOTOS 2.1 Front view, Axcera-CHV4TD Transmitter Axcera-CHV4TD FCC Equipment Authorization Report External Photos 5/21/2012 2-2 2.2 Rear view, Axcera-CHV4TD Transmitter Axcera-CHV4TD FCC Equipment Authorization Report External Photos 5/21/2012 2-3 2.3 Side view, Axcera-CHV4TD Transmitter

Axcera-CHV4TD FCC Type Acceptance Report ID Label/Location Info 5/21/2012 1-1 1. ID LABEL/LOCATION INFO 1.1 Rear Panel FCC Label 1.2 Rear Panel Manufacturer’s Label Axcera-CHV4TD FCC Type Acceptance Report ID Label/Location Info 5/21/2012 1-2 1.3 Rear view, Axcera-CHV4TD Transmitter with FCC Label and Manufacturer’s Label

Axcera-CHV4TD FCC Equipment Authorization Report Internal Photos 5/21/2012 6-1 6. INTERNAL PHOTOS 6.1 Top view, CHV4TD Transmitter (Driver) Axcera-CHV4TD FCC Equipment Authorization Report Internal Photos 5/21/2012 6-2 6.2 Top View Axcera CHV4TD Transmitter, Amplifier Axcera-CHV4TD FCC Equipment Authorization Report Internal Photos 5/21/2012 6-3 6.3 Bottom View Axcera CHV4TD Transmitter, Amplifier

Axcera – CHV4TD Equipment Authorization Report – Part 74 Test Report May 2012 4-1 4. TEST REPORT 4.1 RF Power Measurements Figure 4-1 shows the test equipment setup for the RF power measurements. Figure 4-1. Test Equipment Setup for RF Power Measurements The output power of the CHV4TD was adjusted to obtain 3000 watts average RF output as observed on the power meter. At this power level, the final; Measured Power: +24.77 dBm Coupling Loss: -40.0 dB Power: +64.77 dBm Power = 3000 Watts With the power level properly set to 3000 watts average, all required tests were performed and recorded in the following sections. CU1800BTD Transmitter Hewlett Packard Power Meter Bird Model 8892-300 50 Ohm Termination Directional Coupler RFA-300 Test Measurement Set & EFA 2067.3004.53 8VSB Demodulator Aglilent Spectrum Analyzer Device Under Test CHV4TD Transmitter Bandpass filter Directional Coupler Axcera – CHV4TD Equipment Authorization Report – Part 74 Test Report May 2012 4-2 4. 2 Modulation Characteristics The modulator tray incorporates a modulation technique known as 8-Level Vestigial Side-band (8-VSB), which uses a layered digital architecture and a single carrier frequency. A pilot tone is provided, to allow rapid acquisition of the signal by receivers. The 8-VSB system transmits a serial data bit stream at a rate of 19.4 Mbps in a 6 MHz television channel. This type of transmission is far less susceptible to propagation impairments such as multi-path, noise and interference as compared to analog transmissions. The modulator tray is fully adaptive to correct all linear and nonlinear amplifier/filter distortions. Figure 4-2. Typical Demodulation Test Setup CHV4TD Transmitter Directional Coupler 50 Ohm Termination 20 dB Attenuator Device Under Test EFA 2067.3004.53 8VSB Demodulator RFA-300 Test Measurement Set Directional Coupler Bandpass filter Axcera – CHV4TD Equipment Authorization Report – Part 74 Test Report May 2012 4-3 4. 3 Error Vector Magnitude (EVM) and Signal to Noise Ratio (SNR) The EFA 8 VSB Demodulator was used to measure that the un-equalized patterns are within the ATSC/FCC EVM limit of 4% and SNR limit of 27db. Figure 4-3. SNR Measurement Axcera – CHV4TD Equipment Authorization Report – Part 74 Test Report May 2012 4-4 4. 4 Frequency Response Figure 4-4. Frequency Response Plot Axcera – CHV4TD Equipment Authorization Report – Part 74 Test Report May 2012 4-5 4. 5 Peak to Average Figure 4-5. Peak to Average Plot Axcera – CHV4TD Equipment Authorization Report – Part 74 Test Report May 2012 4-6 4. 6 Phase Noise Figure 4-6. Phase Noise Plot Axcera – CHV4TD Equipment Authorization Report – Part 74 Test Report May 2012 4-7 4.7 Occupied Bandwidth Using the test setup in Figure 4-2, with the transmitter operating at maximum power, a photograph of the transmitter occupied bandwidth spectrum was taken and is shown in Figure 4-7. Figure 4-7. Channel Occupied Bandwidth (Post-Filter) Axcera – CHV4TD Equipment Authorization Report – Part 74 Test Report May 2012 4-8 4.8 Conducted Spurious Emissions The Hewlett Packard Spectrum Analyzer was used to measure harmonics before mask filter. The levels were then added to the filter attenuation at the 2 nd and 3 rd harmonics for a reading of less than -76dB at the output of the mask filter. Figure 4-8A. Reference (201.00 MHz) = 0dBc (Pre-Filter) Axcera – CHV4TD Equipment Authorization Report – Part 74 Test Report May 2012 4-9 Figure 4-8B. Second Harmonic (402.00 MHz) = -60 dBc (Pre-Filter) Figure 4-8C. Third Harmonic (603.00 MHz) = -64 dBc (Pre-Filter) Axcera – CHV4TD Equipment Authorization Report – Part 74 Test Report May 2012 4-10 Figure 4-8D. Band-pass Filter response Axcera – CHV4TD Equipment Authorization Report – Part 74 Test Report May 2012 4-11 Figure 4-8E. Bandpass Filter response Axcera – CHV4TD Equipment Authorization Report – Part 74 Test Report May 2012 4-12 Harmonic (MHz) Level Relative to fundamental Filter Response (dB) Bandwidth correction (dB) Total (dB) Fundamental (201) ref ref --- ref Second (402) -60 -29 -10.3 -99.3 Third (603) -76 -54 -10.3 -140.3 Table 4-1. Post Filter Harmonic Levels The FCC rules require the energy to be measured in 500 kHz, and compared to the total channel power. The channel power is spread out evenly over an occupied bandwidth of 5.4 MHz. The total channel power is 10*log(5.4/0.5)=10.3 dB Frequency Relative Level (dBm) FCC Requirement (dBm) Fundamental 0 dB (reference) --- Second Harmonic -99 -76 Third Harmonic -140 -76 Axcera – CHV4TD Equipment Authorization Report – Part 74 Test Report May 2012 4-13 Part 74.794 of the Rules states: (ii) Stringent mask. In the first 500kHz from the channel edges, emissions must be attenuated no less than 47 dB. More than 3 MHz from the channel edges, emissions must be attenuated no less than 76 dB. At any frequency between 0.5 and 3 MHz from the channel edges, emissions must be attenuated no less than the value determined by the following formula: A(dB) = 47 + 11.5 (Df-0.5) Axcera – CHV4TD Equipment Authorization Report – Part 74 Test Report May 2012 4-14 Figure 4-8G. Out of Band Emissions (Post Filter) Axcera – CHV4TD Equipment Authorization Report – Part 74 Test Report May 2012 4-15 4.9 Radiated Emissions Using the test setup shown in Figure 4-1, with the transmitter operating at full power, the spectrum analyzer was moved 3 meters from the transmitter and connected to a dipole antenna cut to the 201 MHz. This antenna was oriented to maximize the received level and the data was recorded. The antenna was then cut to the local oscillator frequency and the second and third through harmonic frequencies of the transmitter, and all of the signals received, were maximized by antenna orientation and their absolute levels were recorded. With these various antennas, the only measurable level observed was at 201 MHz. This level is shown below in Table 4-2 and an analysis of the relative field and strength is provided in the following paragraphs. Table 4-2. Measurable Levels Observed…

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