UBS Axcera 835A-6 6000-Watt UHF Transmitter User Manual 281870

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Document ID	281870
Application ID	dZaTFEbepG0GYZJP60vLfA==
Document Description	Installation Procedure
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Microsoft Word - pdf
Filesize	5.97kB (74666 bits)
Date Submitted	2002-11-07 00:00:00
Date Available	2002-12-26 00:00:00
Creation Date	2002-11-07 11:23:26
Producing Software	Acrobat Distiller 5.0.5 (Windows)
Document Lastmod	2002-11-07 11:23:26
Document Title	Microsoft Word - 281870.DOC
Document Creator	PScript5.dll Version 5.2
Document Author:	fcc

835A 4 kW, 5 kW or 6 kW UHF Transmitter, Internally Diplexed
Unpacking and Installation
Air conditioning and any related heat exhaust ducts should be in place before continuing with the installation of the
Transmitter.
Installation of Cabinets and Trays
Please inspect the Cabinets and all other material thoroughly upon 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, scratches, broken switches, meters or connectors. Any claims against in-transit
damage should be directed to the Carrier. Also please inform Axcera as to the extent of the damage.
Remove the Cabinets, Trays, Hybrid Combiner, Bandpass Filter, Trap Filter and Output Couplers along with the Installation
Material that make up the 835A from the crates and boxes. Remove the straps which 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, for these are identification markers which make reassembly of the
Transmitter as easy as possible.
There are three Cabinets, (A1) the Single UHF Exciter Assembly, (A2) the Side A 2-3 kW Amplifier Array Assembly and
(A3) the Side B 2-3 kW Amplifier Array Assembly. These Cabinets should be arranged from left to right with you facing the
front, the A1 Single UHF Exciter Cabinet, the A2 Side A Amplifier Cabinet and the A3 Side B Amplifier Cabinet.
The cabinets should be positioned with consideration taken for adequate air intake and exhaust, the opening of the rear door,
access to the Trays including sliding them out for testing, the AC hook up and the installation of the Output Transmission Line.
The Cabinets should be Grounded using copper strapping material and also should be permanently mounted to the floor of the
Site using the holes in the bottom of the Cabinets.
Remove the two L-brackets, mounted on the front panel rails of the Single Exciter Cabinet, which hold the Trays in place
during shipment. The UHF Amplifier Trays are shipped separately from the Amplifier Array Cabinets because of the weight
of each Tray. The Trays are mounted in the cabinet using Chassis Trak cabinet slides. The Tray Slides are on the Top and
Bottom of the UHF Amplifier Trays and on the sides of the UHF Exciter Tray and the Variable Phase/Gain Trays. Inspect for
any loose hardware or connectors, tightening where needed. Open the rear door, the key to unlock the door, if the door has the
Optional lock, is found in a tan envelope taped to the door, and inspect the interior for packing material. Carefully remove any
packing material that is found. Slowly slide each Tray in and out to verify that they do not rub against each other and have no
restriction to free movement. Note: The UHF Amplifier Trays must be placed into the Cabinets in the proper location
according to the labeling on each Tray or the Gain and the Phasing will not be maximized.
The UHF Amplifier Trays are labeled to indicate where they are positioned in the Side A or the Side B Amplifier Cabinets.
They are mounted in each Cabinet from bottom left to top right, with A1 the bottom left Tray and A6 the top right Tray.
Locate the Tray labeled A1 and slide it into the Side A Cabinet, the bottom left position. Locate the Tray labeled A2 and slide
it into the Side A Cabinet, the bottom right position. Locate the Tray labeled A3 and slide it into the Side A Cabinet, the center
left position. Locate the Tray labeled A4 and slide it into the Side A Cabinet, the center right position. Locate the Tray labeled
A5 and slide it into the Side A Cabinet, the top left position.
Locate the UHF Amplifier Tray labeled B1 and slide it into the Side B Cabinet, the bottom left position. Locate the Tray
labeled B2 and slide it into the Side B Cabinet, the bottom right position. Locate the Tray labeled B3 and slide it into the Side
B Cabinet, the center left position. Locate the Tray labeled B4 and slide it into the Side B Cabinet, the center right position.
Locate the Tray labeled B5 and slide it into the Side B Cabinet, the top left position. All of the Amplifier Trays should now be
installed. Slowly slide each Tray in and out to verify that they do not rub against each other and have no restriction to free
movement.
Caution: Each UHF Amplifier Tray has a hard-line coaxial cable connected to the rear panel and will not slide out
without first removing this connection. In order to pull out the Tray for test purposes or other reasons, use the test cable
included in the Installation Material Kit for connection from the Tray to the Output Cable. Adjustments to the position of the
Trays may be necessary, and are accomplished by loosening the cabinet slide mounting bolts that hold the front of the slide to
the mounting frame of the Cabinet and moving the Tray, up or down, left or right, as needed to correct for the rubbing.
- Page 1 of 2 -
835A 4 kW, 5 kW or 6 kW UHF Transmitter, Internally Diplexed
Unpacking and Installation
Main AC Inputs
Once the Cabinets are in place and the Trays are checked for damage and alignment, the Main AC Hook-Up is ready to be
made. Before connecting the 208/240 VAC, make certain that all of the circuit breakers associated with the Transmitter are
switched Off. There are three AC Input circuits to the Transmitter, one 208/240 VAC 20 Amp for the Exciter Cabinet and two
208/240 VAC 100 Amp for single phase or two 208/240 VAC 55 Amp for three phase, one to each of the Amplifier Cabinets.
The 20 Amp, 208/240 VAC Input connections are made to the Terminal Block A8-TB1, which is part of the AC Distribution
Assembly, Exciter Cabinet (1245-1500), located near the center right hand side, rear portion of Cabinet #1. Terminal 1 Line 1,
Terminal 3 Line 2 (208/240 VAC) and Terminal 2 (Chassis Ground).
Three Phase AC Installation to the Amplifier Cabinets
Connect one of the 55 Amp, 208/240 VAC Inputs to the Terminal Block A10-TB1, which is part of the AC Distribution
Assembly, Amplifier Assembly (1278-1100), located near the center right hand side, rear portion of Cabinet #2. Connect Line
1 to TB1-1A, Line 2 to TB1-2A, Line 3 to TB1-3A, and Safety Ground to TB1-4A.
Connect the other 55 Amp, 208/240 VAC Input to the Terminal Block A10-TB1, which is part of the AC Distribution
Assembly, Amplifier Assembly (1278-1100), located near the center right hand side, rear portion of Cabinet #3. Connect Line
1 to TB1-1A, Line 2 to TB1-2A, Line 3 to TB1-3A, and Safety Ground to TB1-4A.
Single Phase AC Installation to the Amplifier Cabinets
Connect one of the 100 Amp, 208/240 VAC Inputs to the Terminal Block A10-TB1, which is part of the AC Distribution
Assembly, Amplifier Assembly (1278-1200), located near the center right hand side, rear portion of Cabinet #2. Connect Line
1 to TB1-1A, Line 2 to TB1-3A and Safety Ground to TB1-4A.
Connect the other 100 Amp, 208/240 VAC Input to the Terminal Block A10-TB1, which is part of the AC Distribution
Assembly, Amplifier Assembly (1278-1200), located near the center right hand side, rear portion of Cabinet #3. Connect Line
1 to TB1-1A, Line 2 to TB1-3A and Safety Ground to TB1-4A.
Output Connections
The RF Output of the (A2) Amplifier Assembly connects through (A5) a 1-5/8" to 3-1/8" Adaptor to J1 on (A4) the Hybrid
Combiner and the RF Output of the (A3) Amplifier Assembly connects through (A6) a 1-5/8" to 3-1/8" Adaptor to J2 on (A4)
the Hybrid Combiner. The Reject Output of the combiner at J4 connects through (A12) a 1-5/8” to 3-1/8” Adapter to (A7) a
Directional Coupler (1016-1043) to (A8) a 2500 Watt Reject Load. The combined RF Output of the Combiner at J3 connects
to through (A9) Bandpass Filter to (A10) the Output Trap Filter Assembly. The filtered output connects through (A11) the
Output Coupler Assembly (1020-1002) to the Transmission Line that is connects to your Antenna System.
This completes the Unpacking and Installation of the 835A UHF Transmitter, Internally Diplexed. Refer to the Set Up and
Operation Procedure which follows before applying power to the Transmitter.
- Page 2 of 2 -
November 7, 2002

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Title                           : Microsoft Word - 281870.DOC

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