User's Manual

Digital UHF Transmitter Chapter 3, Installation and Setup Procedures
DT835A, Rev. 0 3-4
Figure 3-1. 1 kW Minimum Ventilation Configuration
3.2 Unpacking the Cabinets and
Trays
Note: Air conditioning and any
related heat exhaust ducts should be
in place before continuing with the
installation of the transmitter.
Thoroughly inspect the cabinets 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. Check for
dents and scratches or broken switches,
meters, 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.
Remove the cabinets, trays, hybrid
combiner, bandpass filter, trap filter, and
output couplers, along with any
installation material, from the crates and
boxes. Remove the straps that hold the
cabinets to the shipping skids and slide
the cabinets from the skids. Remove the
plastic wrap and foam protection from
around the cabinets. Do not remove any
labeling or tags from any cables or
connectors. These are identification
markers that make reassembly of the
transmitter much easier.
3.3 Installing the Cabinets and Trays
There are three cabinets: (A1) the single
UHF exciter assembly, (A2) the side A
amplifier array assembly, and (A3) the
side B amplifier array assembly. With the
operator facing the cabinets, they should
be arranged from left to right with the
single UHF exciter cabinet on the left, the
side A amplifier cabinet in the center, and
the side B amplifier cabinet on the right.
The cabinets should be positioned with
consideration given to adequate air
intake and exhaust, the opening of the
rear door, access to the trays (including
sliding them out for testing), the AC
hookup, and the installation of the output
transmission line. The cabinets should be
grounded using copper strapping
material and should also be permanently
mounted to the floor of the site using the
holes in the bottom of the cabinets.