OUSCU0TD-5-UBS200W UHF Digital Transmitter

Instruction Manual













Innovator, CU0TD-1/CU0RD-1, 5 Watt - CU4TD/CU4RD, 2500 Watt UHF,
ATSC
Transmitter/
Regenerative
Translator
w/
Adaptive
Modulator
















UBS-Axcera Inc. 103 Freedom Drive •
P.O. Box 525
• Lawrence, PA 15055-0525, USA
Phone:
724#873#8100
•
Fax:
724#873#8105
www.UBS#Axcera.com
•
info@UBS#Axcera.com












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Copyright © 2012, UBS-Axcera Innovator CU0TD-1/CU0RD-1 – CU4TD/CU4RD Table of Contents ATSC Transmitter/Regenerative Translator
Instruction Manual, Rev. 2 i 03/06/13
Table of Contents Introduction.........................................................................................................1 Manual
Overview ...............................................................................................1 UBS#Axcera
Numbering
System
Explanation..........................................................1 Assembly
Designators ........................................................................................2 Safety ..............................................................................................................2 Contact
Information ...........................................................................................3 Return
Material
Procedure...................................................................................4 Limited
One
Year
Warranty
for
UBS#Axcera
Products..............................................5 System Description.............................................................................................14 Product
Architecture.........................................................................................14 CX
Drawers.....................................................................................................14 Amplifier
Drawers ............................................................................................16 Pre#Filter
Sample
(Non#Linear
Distortion)............................................................18 Post#Filter
Sample
(Linear
Distortion).................................................................18 Unpacking, Installation and Maintenance................................................................20 Unpacking.......................................................................................................20 Installation......................................................................................................21 Drawer
Slide
Installation...................................................................................22 AC
Input
Connections.......................................................................................22 Single Amplifier Drawer Systems....................................................................22 Multi Amplifier Drawer Systems......................................................................23 AC Distribution Box.......................................................................................23 AC Distribution Panel ....................................................................................23 Power Requirements.....................................................................................24 CX
Exciter/Driver
Input
and
Output
Connections..................................................24 CX Driver/Exciter Input Connections ...............................................................26 CX Driver/Exciter Output Connections.............................................................27 CX Driver/Exciter Single Drawer Output Connections ........................................27 CX Driver/Exciter Multi Drawer Output Connections ..........................................27 Power Monitoring Connections to J11..............................................................28 Remote Connections to J12............................................................................28 HPA
Input
and
Output
Connections ....................................................................30 HPA Output Connections................................................................................31 Connecting
your
Transmitter
to
a
TCP/IP
Network................................................31 Maintenance....................................................................................................32 8VSB ATSC Modulator Board.................................................................................34 Control
and
Communication ..............................................................................34 Control and Communication Interfaces............................................................34 SNMP.......................................................................................................34 Web
GUI ..................................................................................................35 CLI..........................................................................................................35 Local Access ................................................................................................35 Remote Access.............................................................................................35 Network
Parameters.................................................................................…

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1(1) 103 Freedom Drive P.O. Box 525 Lawrence, PA 15055-0525 Attention: Ms. Katie Hawkins March 20, 2014 Re: Request for confidentiality Applicant: UBS-Axcera Inc. FCC ID: OUSCU0TD-5-UBS Response to Correspondence email date 1/31/2014 731 Confirmation: EA352376 Request is hereby submitted by UBS-Axcera Inc. 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: UBS-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. - The internal photos have been removed from the request of confidentiality. - The user manual does NOT need to be confidential. Sincerely, Division Manager UBS-Axcera

UBS-Axcera-CU0TD-5 FCC Equipment Authorization Report External Photos 3/6/2013 2-1 2. EXTERNAL PHOTOS 2.1 Front view, UBS-Axcera-CU0TD-5 Transmitter (Driver) UBS-Axcera-CU0TD-5 FCC Equipment Authorization Report External Photos 3/6/2013 2-2 2.2 Rear view, UBS-Axcera-CU0TD-5 Transmitter (Driver) UBS-Axcera-CU0TD-5 FCC Equipment Authorization Report External Photos 3/6/2013 2-3 2.3 Top view, UBS-Axcera-CU0TD-5 Transmitter (Driver)

UBS-Axcera-CU0TD-5 FCC Type Acceptance Report ID Label/Location Info 3/6/2013 1-1 1. ID LABEL/LOCATION INFO 1.1 Rear Panel FCC Label 1.2 Rear Panel Manufacturer’s Label UBS-Axcera-CU0TD-5 FCC Type Acceptance Report ID Label/Location Info 3/6/2013 1-2 1.3 Rear view, Axcera-CU0TD-5 Transmitter (driver) with FCC Label and Manufacturer’s Label

UBS-Axcera-CU0TD-5 FCC Equipment Authorization Report Internal Photos 3/6/2013 6-1 6. INTERNAL PHOTOS 6.1 Top view, CU0TD-5 Transmitter (Driver)

UBS-Axcera-CU0TD-5 Equipment Authorization Report Operational Description 3/6/2013 8-1 8. OPERATIONAL DESCRIPTION - MODEL UBS-Axcera-CU0TD-5 8.1 General Description The CU0TD-5 is a complete 200-watt UHF solid-state, digital television transmitter. It operates at a nominal output power of 200 watts average (Tray output). 8.2 Technical Specifications Type of Emission......................................................................6M00K1D Frequency Range ..................................................... 470 MHz to 806 MHz Output Power.............................................................. 200 watts average 8.3 Performance Specifications Operating Frequency Range ...................................... 470 MHz to 806 MHz RF output - Nominal: Power.............................................................. 200 watts average Impedance..................................................................... 50 ohms Connector ..............................................................................“N” Regulation of Output .........................................................................3% Signal-to-Noise Ratio (SNR) ........................................... 30 dB or better Carrier Frequency Stability ........................................................±1000 Hz Data Interface: Input Rate.....................................................19.39 Mbps, 6 MHz Channel Input Interface.......................................................... SMPTE 310M or ASI Electrical Requirements Power Line Voltage..............................................115/230 volts, 50/60 Hz Power Consumption..................................................................900 watts Environmental Maximum Altitude ...................................................................8,500 feet Operational Temperature Range ...........................................0°C to +50°C UBS-Axcera-CU0TD-5 Equipment Authorization Report Operational Description 3/6/2013 8-2 Mechanical Dimensions: Width ............................................................... 19” (Rack mount) Height ..................................................................................3RU Weight............................................................................ 38 lbs 8.4. System Overview The CU0TD-5 is made up of the trays/assemblies listed in Table 8-1. Table 8-1. CU0TD-5 Major Trays and Assemblies MAJOR ASSEMBLY DESIGNATOR TRAY/ASSEMBLY NAME A1 Digital Transmitter (Driver) 8.4.1 Digital Modulator The modulator accepts an ASTC transport stream in SMPTE 310 or ASI Format input and outputs an 8-VSB RF signal at the desired center frequency. The signal generation function of the modulator is also referred to as the “forward signal path” in this manual. There is also a “reverse signal path” that is used for automatic adaptive equalization. Two transmitter output samples are taken from directional couplers located before and after the channel mask filter and are applied to modulator or the external Relay. The modulator contains a down-converter that converts the RF sample to a digital sample. The down-converted sample is digitized by the modulator. It is then demodulated in non-real time software. The result is analyzed to calculate linear and nonlinear adaptive equalizers to improve the transmitted signal quality by compensating for the nonlinear compression of the power amplifier, and the linear distortions (mostly group delay effects) of the channel filter. When a linear adaptive equalizer is being calculated, the transmitter sample is taken after the channel mask filter so that its linear distortions can be “seen.” When a nonlinear adaptive equalizer is being calculated, the transmitter sample is taken before the channel mask filter, so that the distortion sidebands being generated by the power amplifier can be seen (the channel filter would remove the out-of-band sidebands). The modulator contains an embedded computer. The computer performs user interface functions and the numerical processing necessary for the adaptive linear and nonlinear equalization. 8.4.2 Digital Transmitter (Driver) The Transmitter Driver provides an On Channel output signal up to 200 Watts. UBS-Axcera-CU0TD-5 Equipment Authorization Report Operational Description 3/6/2013 8-3 8.4.2.1 (A5) ALC Board (1308570) The ALC Board, Innovator CX Series, is used to control the RF drive power to the RF amplifier chain in the CU0TD-1, CU0TD-2, CU0TD-3, CU0TD-4 and CU0TD-5 transmitters. The board accepts an digital 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, …

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UBS-Axcera-CU0TD-5 FCC Equipment Authorization Report Parts List/Tune-up Info 3/6/2013 7-1 7. PARTS LIST/TUNE-UP INFO 7.1 Parts List The transmitter, can be subdivided as follows: Modulator with Adaptive pre-correction – RF output ALC Board Output Detector Board Control Card Board 1W Amplifier Board Single Stage UHF Amplifier Board Dual Stage Amplifier Pallet Astec Switching Power Supply Densei-Lamda Switching Power Supply 7.2 Tune-Up Information This transmitter was aligned at the factory and should not require additional adjustments to achieve normal operation. This 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 for repair. 7.2.1 Set-Up of the Output Power of the Transmitter Check that the Auto/Man switch S1 on the ALC Board is in the Automatic ALC position. 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. 7.2.2 ALC Board Set-Up in the Tray On (A5) the ALC Board (1308570), 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%. Calibrate the transmitter output power using R23, Forward Calibration pot, on the Output Detector Board. Turn the output power down to 10% power. 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. Re-connect the RF output connector to the tray and increase the power, in Manual gain, to 110%. Adjust the Overdrive pot R38, CCW until the overdrive threshold just trips and the Overdrive Fault LED DS4 lights. Turn the pot slightly CW so that power comes back up and DS4 goes out. Switch S1 to ALC. Turn the ALC Adjust pot R75 until the power is 100%. Switch S1 between ALC and Manual to verify smooth switching, with minimal change in power. Switch the tray Off and insert a 10 dB attenuator at the input. Switch the tray On and UBS-Axcera-CU0TD-5 FCC Equipment Authorization Report Parts List/Tune-up Info 3/6/2013 7-2 verify the input fault LED comes on and the RF power Mutes. Output power should drop by at least 20-30 dB. Switch the tray Off and remove the 10 dB attenuator. Replace the input connector and turn the tray back on. 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%. This completes the set up of the ALC board. 6 MHz -35 dB -110 dB 3 MHz 6 MHz Figure 3: Typical Digital Spectrum 7.2.3 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. All adjustments are made using the Modulator. The transmitter is now set up and ready for normal operation.

UBS-Axcera – CU0TD-5 Equipment Authorization Report – Part 74 Test Report March 2013 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 CU0TD-5 was adjusted to obtain 150 watts average RF output as observed on the power meter. At this power level, the final Measured Power: +11.8 dBm Coupling Loss: -40.0 dB Power: +51.8 dBm Power = 150 Watts With the power level properly set to 150 watts average, all required tests were performed and recorded in the following sections. CU0TD-5 Transmitter Hewlett Packard Power Meter Bird Model 8892-300 50 Ohm Termination Connecticut Microwave Directional Coupler RFA-300 Test Measurement Set & EFA 2067.3004.53 8VSB Demodulator HP Spectrum Analyzer Device Under Test Bandpass Filter Directional Coupler UBS-Axcera – CU0TD-5 Equipment Authorization Report – Part 74 Test Report March 2013 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 linear and nonlinear distortions. Figure 4-2. Typical Demodulation Test Setup CU0TD-5 Transmitter Directional Coupler 50 Ohm Termination 20 dB Attenuator Device Under Test EFA 2067.3004.53 8VSB Demodulator Bandpass Filter Directional Coupler RFA-300 Test Measurement Set UBS-Axcera – CU0TD-5 Equipment Authorization Report – Part 74 Test Report March 2013 4-3 4. 3 Error Vector Magnitude (EVM) and Signal to Noise Ratio (SNR) The Rohde & Schwarz EFA Signal Analyzer 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 UBS-Axcera – CU0TD-5 Equipment Authorization Report – Part 74 Test Report March 2013 4-4 4. 4 Frequency Response Figure 4-4. Frequency Response Plot UBS-Axcera – CU0TD-5 Equipment Authorization Report – Part 74 Test Report March 2013 4-5 4. 5 Peak to Average Figure 4-5. Peak to Average Plot UBS-Axcera – CU0TD-5 Equipment Authorization Report – Part 74 Test Report March 2013 4-6 4. 6 Phase Noise Figure 4-6. Phase Noise Plot UBS-Axcera – CU0TD-5 Equipment Authorization Report – Part 74 Test Report March 2013 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) UBS-Axcera – CU0TD-5 Equipment Authorization Report – Part 74 Test Report March 2013 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 (587.00 MHz) = 0dBc (Pre-Filter) UBS-Axcera – CU0TD-5 Equipment Authorization Report – Part 74 Test Report March 2013 4-9 Figure 4-8B. Second Harmonic (1174.00 MHz) = -15 dBc(Pre-Filter) UBS-Axcera – CU0TD-5 Equipment Authorization Report – Part 74 Test Report March 2013 4-10 Figure 4-8C. Third Harmonic (1761.00 MHz) = <-53 dBc (Pre-Filter) UBS-Axcera – CU0TD-5 Equipment Authorization Report – Part 74 Test Report March 2013 4-11 Figure 4-8D. Bandpass Filter response UBS-Axcera – CU0TD-5 Equipment Authorization Report – Part 74 Test Report March 2013 4-12 Figure 4-8E. Bandpass Filter Harmonic response UBS-Axcera – CU0TD-5 Equipment Authorization Report – Part 74 Test Report March 2013 4-13 Figure 4-8F. Bandpass Filter response Harmonic (MHz) Level Relative to fundamental Filter Response (dB) Bandwidth correction (dB) Total (dB) Fundamental (587) ref ref --- ref Second (1174) -15 -88.5 10.3 -113.8 Third (1761) -53 -65 10.3 -128.3 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 -113.8 -76 Third Harmonic -128.3 --76 UBS-Axcera – CU0TD-5 Equipment Authorization Report – Part 74 Test Report March 2013 4-14 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) Figure 4-8J. Out of Band Emissions (Post Filter) UBS-Axcera – CU0TD-5 Equipment Authorization Report – Part 74 Test Report March 2013 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 587 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 587 MHz. This level is shown be…

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