LX Series Digital
Chapter 2, Amplifier Assembly Description,
Power Amplifier Assembly
Maintenance & Remote Control Connections
Volume 2, Rev. 1
2-3
J233 on (A2-A6) to J232 on (A2-A13)
power amplifier.
2.1.1 Power Amplifier Chassis
Configurations
In the 125W digital power amplifier
chassis assembly the RF from J201
connects to the OSP Jack J111 in the
power amplifier assembly. In the power
amplifier chassis assemblies above 250W,
the RF from J200 connects to the SMA
Jack J100 on the 4 way splitter assembly.
The 4 outputs, in a 1 kW amplifier power
amplifier assembly, connect through the
output SMA jacks to OSP input jacks of
the four slide in power amplifier module
assemblies. J101 connects to jack J111
on power amplifier #1. J102 connects to
jack J121 on power amplifier #2. J103
connects to jack J131 on power amplifier
#3. J104 connects to jack J141 on power
amplifier #4.
2.1.1.1 125 Watt Digital Power Amplifier
Chassis Configuration
In a 125 Watt digital power amplifier
chassis assembly, the RF input at J201 is
connected to J111 on the power amplifier
module. The output of the power
amplifier at J112 connects to the RF
output jack J203 of the power amplifier
chassis assembly.
2.1.1.2 250 Watt Digital Power Amplifier
Chassis Configuration
In a 250 Watt digital power amplifier
chassis assembly, Jacks J103 and J104,
on the 4 way splitter assembly, are not
used and are terminated with 50
Ω
. Also,
the power amplifier modules #3 and #4
are not used. Finally a 2 way combiner is
used in place of the 4 way combiner.
2.1.1.3 500W Digital Power Amplifier
Chassis Configuration
In a 500W digital amplifier power
amplifier assembly, the output OSP jacks
connect to the OSP input jacks on the
four way combiner assembly. J112
connects to J151 on the 4 way combiner.
J122 connects to J152 on the 4 way
combiner power amplifier #2. J132
connects to J153 on the 4 way combiner.
J142 connects to J154 on the 4 way
combiner.
Figure 2-1. 500W Digital Power Amplifier
Assembly Racking Plan
In a 500W digital amplifier power
amplifier assembly, the (A5) power
supply #1 provides voltages to the (A1)
power amplifier #1 and the (A3) power
amplifier #3 assemblies and the (A6)
power supply #2 provides voltages to the
(A2) power amplifier #2 and the (A4)
power amplifier #4.