LX Series Digital
Chapter 3, Site Considerations,
Power Amplifier Assembly
Installation and Setup Procedures
Volume 2, Rev. 1
3-5
3.2 Unpacking the Chassis
w/modules and bandpass filter
Thoroughly inspect the chassis with
modules and all other materials upon
their arrival. Axcera certifies that upon
leaving our facility the equipment was
undamaged and in proper working order.
The shipping containers should be
inspected for obvious damage that
indicates rough handling.
Remove the chassis and modules, along
with bandpass filter and optional trap
Filter, from the crates and boxes. Check
for dents and scratches or broken
connectors, switches, display, or
connectors. Any claims against in-transit
damage should be directed to the carrier.
Inform Axcera as to the extent of any
damage as soon as possible.
The modules are mounted to the chassis
assembly with slides that are on the top
and the bottom of the modules. There
are two thumb screws on the front panel
that hold each of the modules in place.
3.3 Installing the Chassis w/modules
and filters
The exciter/driver and power amplifier
chassis assemblies are made to mount in
a standard 19” rack. The chassis
assemblies mount using the four #10
clearance mounting holes on the ends.
The chassis should be positioned; to
provide adequate air intake into the front
and the air exhaust of the fan in the rear;
the ability to slide the modules out for
replacement purposes; the installation of
the bandpass filter; optional trap filter;
the coupler assembly; and output
transmission line. The chassis or cabinet
in which it is mounted should be
grounded using copper strapping
material.
NOTE:
To remove the driver/power
amplifier module, mounted in the
exciter/driver assembly, the input and
output cables must be removed from the
rear of the module and also a 6/32” x ½”
Philips screw, mounted between the two
connectors, needs to be removed before
the module will pull out. After removal of
the screw, which is used to hold the
module in place during shipping, it does
not need to be replaced. (See Figure 3-2)
NOTE:
To remove the Combiner Module,
found in the power amplifier assembly in
high power transmitters, the output cable
must be removed from the rear of the
module and also two 8/32” x ½” Philips
screws, mounted above the connector,
need to be removed before the module
will pull out. After removal of the screws,
which are used to hold the module in
place during shipping, they do not need
to be replaced.
Figure 3-2. Front and Rear View Exciter/Driver
Shipping Screw
