Related Manuals for Cable AML ITX02-2000
Summary of Contents for Cable AML ITX02-2000
- Page 1 Proprietary FCC ID: JXZITX02-2000 12.0 USER’S MANUAL Type Acceptance Report 6/20/03 Proprietary...
- Page 2 Cable AML Installation Maintenance Manual Indoor Broadband Transmitter Model: ITX02-2000...
- Page 3 INSTALLATION AND MAINTENANCE MANUAL Indoor Broadband Transmitter Model: ITX02-2000 Cable AML, Inc. 3427 W. Lomita Boulevard Torrance, California 90505 USA TEL 310 517-8888 or 702 363-5660 FAX 310 517-8555 or 702 363-2960 Copyright ©2003 Cable AML, Inc. IM402513-10 20030619...
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Page 4: Table Of Contents
Indoor Broadband Transmitter – ITX02-2000 TABLE OF CONTENTS Section Page 1.0 INTRODUCTION ...................... 1 2.0 CIRCUIT DESCRIPTIONS ..................7 2.1 MMDS Transmitter Driver ....................7 2.2 Power Amplifier Chains ....................8 2.3 Power Supply Assembly ....................8 2.4 Diagnostic Circuits......................8 2.5 On-Delay Timer Assembly....................9 2.6 Internal Downconverter ....................9... - Page 5 Figure 6. MMDS Installation Block Diagram............. 12 Figure 7. AC Input Wiring Diagram................13 Figure 8. Driver Chassis Front And Rear Panels............. 14 Figure 9. ITX02-2000 Rack (Front and Back)............15 Figure 10. Output Level Adjustment................ 17 IM402513-10 Rev –...
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Page 6: Introduction
Field Strength Meter or a TV monitor. The ITX02-2000 transmitter can be equipped to operate on either 120 or 240 VAC at 50 or 60 Hz. This option is specified by customer request, and each unit is shipped according to this specification. -
Page 7: Figure 1. Itx02-2000 Broadband Transmitter
Indoor Broadband Transmitter – ITX02-2000 Figure 1. ITX02-2000 Broadband Transmitter. IM402513-10 Rev –... -
Page 8: Figure 2. Dial And Expected Readings
Indoor Broadband Transmitter – ITX02-2000 Reading From 11.5 to 12.5V DRIVER Reading From 0.7 to 1.7V IPS1 TX RF IPS2 Reading From 0.7 to 1.7V AMP 4 IPS3 Reading From Reading From AMP 3 AMP 1 –85 to -200V 0.7 to 1.7V... - Page 9 Indoor Broadband Transmitter – ITX02-2000 (This Page Intentionally Left Blank.) IM402513-10 Rev –...
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Page 12: Circuit Descriptions
Indoor Broadband Transmitter – ITX02-2000 2.0 CIRCUIT DESCRIPTIONS The ITX02-2000 Transmitter consists of the following circuits or modules: MMDS Transmitter Driver Power Amplifier Power Supply System (three +12 VDC current sharing modules and one +24 VDC power supply) Monitoring and Diagnostic Circuits - connectors and switches. -
Page 13: Power Amplifier Chains
The output connector is designed for use with diagnostic test boxes such as the Cable AML DTB - 1, the WRM-2, or the RM-2A. The test points and corresponding connector pin connections are shown in the Transmitter Block Diagram. -
Page 14: On-Delay Timer Assembly
Indoor Broadband Transmitter – ITX02-2000 DC Voltage Diagnostics - DC voltage diagnostic signals can be read using the built- in meter on the front panel. The functions available on the front panel is shown below: +12 VDC of Driver power supply (volts) -
Page 15: Figure 5. Driver Chassis Component Layout
Indoor Broadband Transmitter – ITX02-2000 Power Local Pump Amplifier Supply Oscillator Processor Filters Upconverter Figure 5. Driver Chassis Component Layout. IM402513-10 Rev –... -
Page 16: Installation
3.3 Input Voltage Requirements Cable AML transmitters can be equipped to operate on either 120 or 240 VAC at either 50 or 60 Hz. This option is specified by customer request, and each unit is shipped according to this specification. -
Page 17: Figure 6. Mmds Installation Block Diagram
Indoor Broadband Transmitter – ITX02-2000 VHF SIGNAL MMDS TX-2000 TRANSMITTER AC POWER Figure 6. MMDS Installation Block Diagram. AC Power Connections This unit is equipped with an AC power cord that is wired for single-phase operation. It is necessary to attach a plug to the power cord before putting the unit into operation. -
Page 18: Figure 7. Ac Input Wiring Diagram
Indoor Broadband Transmitter – ITX02-2000 SINGLE PHASE WIRING GROUND NEUTRAL HOT or (WHITE or MAIN EARTH BLUE) (BLACK or (GREEN or BROWN) GREEN/YELLOW) THREE PHASE WIRING GROUND NEUTRAL HOT or (WHITE or MAIN EARTH BLUE) (BLACK or (GREEN or BROWN) GREEN/YELLOW) Figure 7. -
Page 19: Figure 8. Driver Chassis Front And Rear Panels
Indoor Broadband Transmitter – ITX02-2000 Diagnostic Connections Diagnostic connections, not essential to the normal operation of the transmitter, are made at the front panel of the transmitter. • RF Diagnostics - Two RF test point output "N" connectors for Driver RF output and Transmitter Monitor output are provided on the front panel. -
Page 20: Figure 9. Itx02-2000 Rack (Front And Back)
Indoor Broadband Transmitter – ITX02-2000 Meter Blower Panel Driver 12 VDC @ 84 A Power Supplies (x3) Figure 9. ITX02-2000 Rack (Front and Back). IM402513-10 Rev –... - Page 21 Indoor Broadband Transmitter – ITX02-2000 (This Page Intentionally Left Blank.) IM402513-10 Rev –...
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Page 22: Operation
To properly operate the transmitter, simply apply the required AC power and input signal. The ITX02-2000 transmitter can be equipped to operate on either 120 or 240 VAC at 50 or 60 Hz. This option is specified by customer request, and each unit is shipped according to these specifications. -
Page 23: Ambient Conditions
Indoor Broadband Transmitter – ITX02-2000 4.2 Ambient Conditions The ITX02-2000 transmitter is designed to operate with no external cooling devices. Internal cooling fans maintain component temperatures at desirable levels when ambient conditions are in the range specified in Section 6.0 - Specifications. -
Page 24: Maintenance & Troubleshooting
Indoor Broadband Transmitter – ITX02-2000 5.0 MAINTENANCE & TROUBLESHOOTING 5.1 Maintenance Input and output power levels should be measured periodically and adjustments made if necessary. The output power level should be measured and adjusted as described in Section 4.0 of this manual. - Page 25 Indoor Broadband Transmitter – ITX02-2000 Lack of Driver +12 VDC If internal trouble shooting is required due to lack of +12 VDC in the external DC diagnostic test then check for internal +12 VDC on the terminal strip. If 12 VDC is missing, first disconnect the wires from the power supply output terminals and recheck the voltage.
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Page 26: Specifications
Indoor Broadband Transmitter – ITX02-2000 6.0 SPECIFICATIONS ITX02-2000 Transmitter 222 to 408 MHz Input Frequency Input Level (80 channel loading): +20 dBmV (-29 dBm) Output Frequency 2.5 to 2.686 GHz Peak Power Average Power C/N (dB) Channels DBm/Channel dBm/Channel 40.5 43.0...