BZ5MXI101UDigital Television Broadcast Translator

TSM20-350 MXi 101U AMPLIFIER TECHNICAL SERVICE MANUAL LARCAN INC. 228 AMBASSADOR DRIVE MISSISSAUGA, ONTARIO CANADA L5T 2J2 PHONE: (905) 564-9222 FAX: (905) 564-9244 EMAIL: [email protected] PUBLICATION TSM20-350 Rev 0 February 8, 2006 MXi 101U TECHNICAL SERVICE MANUAL TSM20-350 MXi TECHNICAL SERVICE MANUAL CONTENTS 1 INTRODUCTION .............................................................................................................................................................1 2 SAFETY NOTICES...........................................................................................................................................................2 2.1 BERYLLIUM OXIDE WARNING......................................................................................................................................2 2.2 OTHER TOXIC MATERIALS...........................................................................................................................................2 2.3 DANGEROUS VOLTAGES...............................................................................................................................................2 2.3.1 Switch to Safety ....................................................................................................................................................3 3 LARCAN PARTS, ASSEMBLIES, ASSEMBLY DRAWINGS AND SCHEMATIC NUMBERS ............................5 3.1 VENDOR STANDARD PART NUMBERS...........................................................................................................................5 3.2 LARCAN NUMBERS FOR PARTS, ASSEMBLIES AND DOCUMENTATION.......................................................................5 3.3 LEADED RESISTORS......................................................................................................................................................6 3.4 SURFACE MOUNT RESISTORS 1/4W AND LESS.............................................................................................................6 3.5 SURFACE MOUNT CAPACITORS....................................................................................................................................7 3.6 PARTS LISTS.................................................................................................................................................................7 3.6.1 Production Changes.............................................................................................................................................7 4 GLOSSARY .......................................................................................................................................................................9 PUB05-58 MXi 101U OPERATIONS AND MAINTENANCE 1 MXi 101U AMPLIFIER ....................................................................................................................................................1 2 MXi CONTROLLER........................................................................................................................................................2 3 AMPLIFIER INSTALLATION AND STARTUP ..........................................................................................................4 3.1 BEFORE APPLYING AC TO THE UNIT............................................................................................................................4 3.2 APPLYING AC TO THE UNIT..........................................................................................................................................4 3.3 BEFORE TURNING THE AMPLIFIER ON .........................................................................................................................5 3.4 AMPLIFIER ON SEQUENCE............................................................................................................................................6 3.4.1 Turning ON MXi Amplifier..................................................................................................................................6 4 TEST AND TROUBLESHOOTING ...............................................................................................................................8 4.1 BENCH TEST PROCEDURES...........................................................................................................................................8 4.1.1 Front-End Module Bench Test Procedure ...........................................................................................................8 4.1.2 IPA1 Bench Test Procedure .................................................................................................................................8 4.1.3 Driver 21B1751 Bench Test Procedure ...............................................................................................................9 4.1.4 PA Pallet 21B1917G1 Bench Test Procedure......................................................................................................9 4.2 BASIC TROUBLESHOOTING TECHNIQUES......................................................................................................................9 4.2.1 Amplifier Completely OFF...................................................................................................................................9 4.2.2 No RF Output.......................................................................................................................................................9 4.2.3 Output Reduced to 25% .....................................................................................................................................10 5 MAINTENANCE.............................................................................................................................................................11 5.1 DAILY...........................................................................................................................................…

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BZ5MXI101UD Application for FCC Certification 50 Watt Digital Television Translator Exterior Photo

BZ5MXI101UD Application for FCC Certification 50 Watt Digital Television Translator FCC Label/Label Location

BZ5MXI101UD Application for FCC Certification 50 Watt Digital Television Translator Interior Photo of RF Amplifier

BZ5MXI101UD Application for FCC Certification 50 Watt Digital Television Translator Operational Description: This application requests certification for a 50 Watt Digital Television Translator. The intended use of this digital translator is to rebroadcast a television relay station or other legal source of ATSC digital television signal. The MXi101U is a solid state digital regenerative translator designed to receive over-the- air ATSC signals, converting the RF signal to baseband digital format, processing the signal to eliminate noise, and then re-modulating, converting to the new broadcast channel, amplifying and filtering the signal before it is applied to the transmit antenna. The receive section of the translator and the output modulation format conform with FCC Part 73.682(d), ATSC Digital Television Standards. The MXi101U consists of three components: a 1RU RegenT Transcoder unit which receives processes and re-modulates the signal, a 3 RU RF amplifier, and an output filter. The power supply and amplifier are integral. The translator meets all FCC requirements for both the simple emissions mask and the stringent emissions mask. The output filter along with additional filtering within the amplifier provide more than 85dB of attenuation within the GPS Frequency bands (1164- 1240 MHz and 1559-1610 MHz). Note that since these products are frequency agile in that they can be field tuned for different channels within the UHF television band, each unit has this filtering included, regardless of the channel. Testing results shown in this document were conducted on channel 27 (551 MHz center frequency) with the exception of the frequency stability testing which was conducted on channel 34 (650MHz). These test results are representative of performance on any channel in the UHF broadcast spectrum. Wiring, shielding and construction are in accordance with accepted principles of good engineering practice. The translator’s construction is such that all hazardous components are enclosed or protected against accidental contact by operating personnel.

BZ5MXI101UD Application for FCC Certification 50 Watt Digital Television Translator Parts List and Tune-up Procedure/Active Devices: The following is the procedure for changing the channel of the MXi101U translator. Since the amplifier is broadband, channel change involves retuning of the output filter and recalibration of the output meter. The amplifier meter was calibrated to read 100% (top scale) at full power and at the channel specified when the transmitter was tested at the factory. If the amplifier is to operate at a channel other than that of the factory test channel, the metering will require re-calibration. The power meter setting is a channel dependent calibration. 1. Connect the transmitter output to a 50 ohm dummy load or the antenna. The transmitter uses a 50Ω type N connector for its output. Calibrated directional coupler and suitable digital wattmeter should be used for measurements. 2. Connect the AC mains input. This AC circuit should be rated for 15 amperes, and should be supplied through a slow-tripping breaker or time delay fuse. Generally, a breaker that is rated for across-the-line motor starting will be found to be satisfactory. Connect the power supply to the amplifier. 3. At this point the LCD screen should be illuminated, and the transmitter should be OFF. Depress the ON’ switch. The green LEDs should illuminate and the amplifier should be operating. The cooling fans on both the power supply and the amplifier should be running. 4. Attach the RF output power measuring device. 5. Turn down the drive level from the Transcoder (front end) before applying any RF input signal. 6. Slowly turn up the drive level until the output power reaches the desired level (on the power measuring device – not the transmitter power meter indication). 7. When the output power is at the desired level check that the voltage at TP3 (control PC board) is between 4.5V and 9.0VDC. 8. Adjust R48 until the voltage at TP3 is 4.0VDC. At this point the transmitter forward power meter should read 100%. 9. To calibrate the reflected power, install the jumper E17 (prevents VSWR trips). 10. Remove the cable from J12 at the control board and reconnect through a 10dB attenuator to J13. 11. The voltage measured at TP4 should be beterrn 4.5V and 9.0VDC. 12. Adjust potentiometer R80 until the voltage at TP5 is 4.0VDC. At this point the reflected power should read 10%. 13. Reconnect the cables as they were, and remove jumper at E17. The output filter must be retuned as per the frequency response sweeps attached (note: two different tunings depending on the type of filter used): BZ5MXI101UD Application for FCC Certification 50 Watt Digital Television Translator Parts List and Tune-up Procedure Mask Filter: Bandpass Response BZ5MXI101UD Application for FCC Certification 50 Watt Digital Television Translator Parts List and Tune-up Procedure Mask Filter: Return loss BZ5MXI101UD Application for FCC Certification 50 Watt Digital Television Translator Active Devices List: ID Component Description Qty UM Total 41D2047G1 MXi Basic Infineon 1EA 1 31C1897G1 MXI CONTROLLER 1 EA 1 CR1 1SMB9.0AT3 Zener Diode 9V sm 1 EA 1 CR2 1SMB5.0AT3 DIODE 1 EA 1 CR3 MURS120-T3 DIODE 1A 200V MARK U1D ONSEMI 1 EA 1 CR4 HSMS-2800 DIODE SCHOTTKY HSMS-2800L30 1 EA 1 CR5 HSMS-2820 DIODE SCHOTTKY HP MARM CO 1 EA 1 CR6 1SMB5.0AT3 DIODE 1 EA 1 CR8 HSMS-2800 DIODE SCHOTTKY HSMS-2800L30 1 EA 1 CR9 HSMS-2820 DIODE SCHOTTKY HP MARM CO 1 EA 1 CR10 1SMB5.0AT3 DIODE 1 EA 1 CR12 MURS120-T3 DIODE 1A 200V MARK U1D ONSEMI 1 EA 1 CR13 MURS120-T3 DIODE 1A 200V MARK U1D ONSEMI 1 EA 1 CR14 MURS120-T3 DIODE 1A 200V MARK U1D ONSEMI 1 EA 1 CR15 MURS120-T3 DIODE 1A 200V MARK U1D ONSEMI 1 EA 1 CR16 MURS120-T3 DIODE 1A 200V MARK U1D ONSEMI 1 EA 1 CR17 MURS120-T3 DIODE 1A 200V MARK U1D ONSEMI 1 EA 1 CR18 HSMS-2800 DIODE SCHOTTKY HSMS-2800L30 1 EA 1 CR19 HSMS-2820 DIODE SCHOTTKY HP MARM CO 1 EA 1 CR20 1SMB5.0AT3 DIODE 1 EA 1 Q10 BC847B TRANSISTOR NPN MKG-1F 0 EA 0 Q1 BC847B TRANSISTOR NPN MKG-1F 1 EA 1 Q2 BC859C TRANSISTOR, PNP 1 EA 1 Q3 BC847B TRANSISTOR NPN MKG-1F 1 EA 1 Q4 BC859C TRANSISTOR, PNP 1 EA 1 Q5 BC847B TRANSISTOR NPN MKG-1F 1 EA 1 Q6 BC859C TRANSISTOR, PNP 1 EA 1 Q7 BC847B TRANSISTOR NPN MKG-1F 1 EA 1 Q8 2N4351 TRANSISTOR FET N-CH SW 1 EA 1 Q9 BC847B TRANSISTOR NPN MKG-1F 1 EA 1 U1 MC68HC908GT8CFB IC Microcontroller 0 EA 0 U1 MC68HC908GT16CFB IC Microcontroller 1 EA 1 U2 MAX3110EEWI UART, -40°C to +85°C 28 Wide 1 EA 1 U3 MOCD207 IC DUAL OPTO NAND S.M. 1 EA 1 U4 MOCD207 IC DUAL OPTO NAND S.M. 1 EA 1 U5 LM358D IC DUAL OP AMP SOIC 8 MOT 1 EA 1 U6 MMPQ2222A TRANSISTOR NPN S.M. 1 EA 1 U7 LM324D IC QUAD OP AMP SOIC 14 1 EA 1 U8 MOCD207 IC DUAL OPTO NAND S.M. 1 EA 1 U9 HXS 20-NP Current Transducer 1 EA 1 U10 MMPQ2222A TRANSISTOR NPN S.M. 1 EA 1 U11 LM339D IC COMPARITOR 1 EA 1 U12 MOCD207 IC DUAL OPTO NAND S.M. 1 EA 1 U13 LM324D IC QUAD OP AMP SOIC 14 1 EA 1 U14 LM324D IC QUAD OP AMP SOIC 14 1 EA 1 BZ5MXI101UD Application for FCC Certification 50 Watt Digital Television Translator ID Component Description Qty UM Total U15 LM324D IC QUAD OP AMP SOIC 14 1 EA 1 U16 DS1867S-10 IC POT W/EEPROM DUAL 10K 16-SO 1 EA 1 U17 LM324D IC QUAD OP AMP SOIC 14 1 EA 1 U18 74HC00AD IC QUAD 2 INPUT NAND S.M. 1 EA 1 U19 LM324D IC QUAD OP AMP SOIC 14 1 EA 1 U20 LM358D IC DUAL OP AMP SOIC 8 MOT 1 EA 1 U21 LM324D IC QUAD OP AMP SOIC 14 1 EA 1 VR1 78L05ACD Voltage Regulator Motorola 1 EA 1 VR2 MC34064P5 MONITOR I.C. 1 EA 1 VR3 MC7805BDT Voltage Regulator 5V 1A ONSemi 1 EA 1 21B1473G6 FRONT END (-5dB) 1 EA 1 Q1 MMBT2222ALT1 TRANSISTOR, MOTOROLA "1P" 1 EA 1 U3 MC78M12CDT IC SEE 78M12CDT 1 EA 1 U4 MC78L05ACD IC REGULATOR 100mA SOIC-8 1 EA 1 21B1751G2 SINGLE PALLET AMP. MRF374A R-7 1 EA 1 Q1 MRF374A TRANSISTOR 1 EA 1 U1 MC78M09CDT IC VOLTAGE REG. 1 EA 1 21B1951G1 IPA ASSY 1 EA 1 U1 MC1723CD VOLTAGE 1 EA 1 Q3 MMBT2907ALT1 TRANSISTOR PNP MOTOROLA 2FE 1 EA 1 CR100 MMBD7000LT1 DIODE DUAL GENERAL PURPOSE 1 EA 1 CR110 MMBD7000LT1 DIODE DUAL GENERAL PURPOSE 1 EA 1 CR1 MURS120-T3 DIODE 1A 200V …

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Figure 5 41D2047A1 MXi Assembly Diagram sht1 Rev 0 Figure 6 41D2085S1 MXi Schematic sht1 Rev 0 Figure 10 21B1951 IPA Final Assembly sht1 Rev 2 Figure 11 21B1950S IPA Schematic Diagram sht1 Rev 0.1 COMPONENT TOPGROUND L1 Figure 12 21B1751 Single Pallet Amplifier sht1 Rev 0 Figure 13 21B1751S Half Pallet Schematic sht1 Rev 2 Figure 14 11A2142S1 Pallet Circuit Schematic sht1 Rev 2 Figure 15 10A2121A3 UH F Bi-Directional Coupler Assembly sht1 Rev 0 Figure 8 21B1473 MXi Front End UHF DTV Driver Assembly sht1 Rev 5.1 Figure 9 11A1354 MXi Front End UHF DTV Driver Schematic sht1 Rev 2.1 Figure 4 41D1065 MXi Wiring Diagram sht1 Rev 0 Figure 23 MXi Controller Board Assembly Diagram 31C1897A2 sht1 Rev 2.2 Figure 24 MXi Controller Board Schematic 31C1897S1 sht1 Rev 2.3 Figure 25 MXi Controller Board Schematic 31C1897S2 sht2 Rev 2.3 Figure 26 MXi Controller Board Schematic 31C1897S3 sht3 Rev 2.3 Figure 27 MXi Controller Board Schematic 31C1897S4 sht4 Rev 2.3 Figure 28 MXi Controller Board Schematic 31C1897S5 sht5 Rev 2.3

BZ5MXI101UD Application for FCC Certification 50 Watt Digital Television Translator Cabinet Radiation BZ5MXI101UD Application for FCC Certification 50 Watt Digital Television Translator Cabinet Radiation

BZ5MXI101UD Application for FCC Certification 50 Watt Digital Television Translator Attenuation Characteristics

BZ5MXI101UD Application for FCC Certification 50 Watt Digital Television Translator Spurious Emissions (Simple Mask) BZ5MXI101UD Application for FCC Certification 50 Watt Digital Television Translator Spurious Emissions (Stringent Mask) BZ5MXI101UD Application for FCC Certification 50 Watt Digital Television Translator Spurious Emissions

BZ5MXI101UD Application for FCC Certification 50 Watt Digital Television Translator Frequency Drift versus Temperature Readings Calculation Pilot Frequency Deviation% from ref. Temp (°C) VAC= 102120138(Hz) -30 65030735565030740065030731857040.00087712 -20 65031066265031066265031066223600.00036290 -10 6503125896503125896503125894330.00006658 0 6503133596503133596503133593370.00005182 10 65031407265031407265031407010500.00016146 20 65031302265031302265031302200.00000000 30 65031175765031176765031175012720.00019560 40 65031071165031075065031072123110.00035537 50 65031003765031003765031003729850.00045901 60 65031077565031077565031077522470.00034553 Test Setup for Frequency Stability measurements. Test Equipment List: Thermostatically controlled Temperature Chamber – Cincinnati Sub-Zero HP 8594E Spectrum Analyzer S/N: 3303A00399

BZ5MXI101UD Application for FCC Certification 50 Watt Digital Television Translator Digital Signal: Eye Diagram/Signal to Noise Ratio/Error Vector Magnitude BZ5MXI101UD Application for FCC Certification 50 Watt Digital Television Translator Digital Signal: Group Delay/Frequency Response

BZ5MXI101UD Application for FCC Certification 50 Watt Digital Television Translator Test Setup Photo: Block Diagram of Test Setup: Test Equipment: Instrument Make/Model Serial # Last Cal. Date. Spectrum Analyzer HP8594E 3303A00399 Dec. 3, 2003 Signal Analyzer Tektronix RFA300 B010126 Feb. 6, 2003 RF Network Analyzer Agilent 8712ET US40371604 Mar. 6, 2000