UHF Analog Driver/Transmitter/
Chapter 2, System Description,
Translator
Maintenance & Remote Control Connections
LX Series, Rev. 3
2-2
ASSEMBLY DESIGNATOR
TRAY/ASSEMBLY NAME
PART NUMBER
OR A6
Driver Amplifier Module, used in
high power transmitters
1303771 (1kW) OR
1303874 (2kW)
A11
Backplane Board, V2, LX Series
1304047
(Optional)
A14(500/1kW) or
A29(5kW)
Exciter Switcher Assembly
(Used in dual exciter systems)
1305727 (110 VAC) OR
1305715 (220 VAC)
2.0 (Optional) Exciter Switcher Tray,
110 VAC (1305727) or 220 VAC
(1305715); Appendix B
The (optional) Single Channel Auto
Switcher is part of the dual exciter
system. The assembly is made up of
(A1) a Single Channel Exciter Switcher
Tray (1305715) with a separate (A2)
coaxial transfer relay, mounted on a
bracket that faces toward the rear of the
cabinet, behind the Switcher Tray. The
tray is factory set. The Exciter Switcher
Tray is designed to monitor the selected
On Air Exciter and automatically switch
to the back up Exciter if the On Air
Exciter should malfunction. The coaxial
relay has the RF outputs from both
Exciters connected to its inputs and,
depending on if the energizing voltage is
applied or not, the selected Exciter RF
Output is connected to the external
amplifiers and the RF output from the
other exciter is connected to a load. The
front panel has a 4 x 20 display
providing a four-line readout of the
operation and control of the exciter
switcher. The LCD screens are detailed
in Chapter 3.
2.1 Exciter Amplifier Chassis
Assembly, 110 VAC (1304052) or
220 VAC (1304053); Appendix B
NOTE:
In dual exciter systems there are
two exciter amplifier chassis assemblies.
The chassis assembly is factory set for
operation using 110 VAC or 220 VAC. All
of the modules except the power
amplifier module and the power supply
section of the Control & Monitoring/Power
Supply Module, plug directly into a
backplane board. The backplane board
provides module to module
interconnection as well as interconnection
to remote command and control
connectors. Refer to the block diagram
drawing (1302139), located in Appendix
B, for the exciter amplifier chassis
assembly connections.
2.1.1 (A1) UHF Receiver Module
Assembly (1304002; Appendix B)
NOTE:
The Receiver module is not
present in a transmitter or digital system.
NOTE
: If both the Receiver and
Modulator are present in your system
the Modulated IF output from the
Receiver or Modulator must be selected.
This is accomplished by connecting a low
or removing the low to TB31-Pin 3
located on the rear of the exciter/driver
assembly. By connecting the low, the
Modulator IF output is used by the IF
Processor module. By removing the low,
the IF from the internal or external
Receiver is used. (
NOTE:
The IF
Processor board must be configured for
Содержание INNOVATOR
Страница 99: ...APPENDIX A LX SERIES ANALOG SYSTEM SPECIFICATIONS...
Страница 102: ...APPENDIX B DRAWINGS AND PARTS LISTS...
Страница 105: ...APPENDIX C TRANSMITTER LOG SHEET...