Cable AML ITX21-100, Installation And Maintenance Manual

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Indoor Broadband Transmitter – ITX21-100
IM4030013-1 Rev –
i
TABLE OF CONTENTS
Section Page
1.0 INTRODUCTION ...................................................................................................... 1
2.0 CIRCUIT DESCRIPTION.......................................................................................... 7
2.1 Upconverter Section....................................................................................................... 7
2.2 Power Amplifier Chains .................................................................................................. 7
2.3 Power Supply Assembly................................................................................................. 8
2.4 Diagnostic Circuits ......................................................................................................... 8
2.5 On-Delay Timer Assembly ............................................................................................. 8
3.0 INSTALLATION ....................................................................................................... 9
3.1 Unpacking ...................................................................................................................... 9
3.2 Location.......................................................................................................................... 9
3.3 Input Voltage Requirements........................................................................................... 9
3.4 Operating and Diagnostic Connections.......................................................................... 9
4.0 OPERATION .......................................................................................................... 13
4.1 Output Level Setting..................................................................................................... 13
4.2 Ambient Conditions ...................................................................................................... 14
4.3 Thermal Sensor Switch ................................................................................................ 14
5.0 MAINTENANCE AND TROUBLESHOOTING ....................................................... 15
5.1 Maintenance................................................................................................................. 15
5.2 External Troubleshooting ............................................................................................. 15
5.3 Internal Troubleshooting .............................................................................................. 16
6.0 SPECIFICATIONS ................................................................................................. 19