Operating and Safety Instructions Chapter 1

ManualsBrandsUBS-Axcera ManualsElectronics5000-Watt UHF Translator

4-6 kW UHF Translator Chapter 1, Introduction

837B, Rev. 0 1-1

Chapter 1

Introduction

This manual explains the installation,

setup, alignment, and maintenance

procedures for the 837B 4-6 kW solid

state UHF translator. It is important that

you read all of the instructions,

especially the safety information in this

chapter, before you begin to install or

operate the unit.

1.1 Manual Overview

This instruction manual is divided into

five chapters and supporting appendices.

Chapter 1, Introduction, contains

information on the assembly numbering

system used in the manual, safety,

maintenance, return procedures, and

warranties. The second chapter describes

the translator and includes discussions on

system control and status indicators and

remote control connections. Chapter 3

explains how to unpack, install, setup,

and operate the translator. Chapter 4

contains circuit-level descriptions for

boards and board-level components in

the translator. Chapter 5, Detailed

Alignment Procedures, provides

information on adjusting the system

assemblies for optimal operation. The

appendices contain a sample log sheet,

test data sheet, assembly and

subassembly drawings and parts lists,

and system specifications.

1.2 Assembly Designators

Axcera has assigned assembly numbers,

such as Ax (x=1,2,3…), to all assemblies,

trays, and boards that are referenced in

the text of this manual and shown on the

block diagrams and interconnect

drawings provided in the appendices.

These supporting documents are

arranged in increasing numerical order in

the appendices. Section titles in the text

for assembly or tray descriptions or

alignment procedures contain the

associated part number(s) and the

relevant appendix that contains the

drawings for that item.

1.3 Safety

The UHF translators manufactured by

Axcera are designed to be easy to use

and repair while providing protection

from electrical and mechanical hazards.

Listed throughout the manual are notes,

cautions, and warnings concerning

possible safety hazards that may be

encountered while operating or servicing

the translator. Please review these

warnings and familiarize yourself with the

operation and servicing procedures

before working on the translator.

Read All Instructions – All of the

operating and safety instructions should

be read and understood before operating

this equipment.

Retain Manuals – The manuals for the

translator should be retained at the

translator site for future reference. We

provide two sets of manuals for this

purpose; one set can be left at the office

while one set can be kept at the site.

Heed all Notes, Warnings, and

Cautions – All of the notes, warnings,

and cautions listed in this safety section

and throughout the manual must be

followed.

Follow Instructions – All of the

operating and use instructions for the

translator should be followed.

Cleaning – Unplug or otherwise

disconnect all power from the equipment

before cleaning. Do not use liquid or

aerosol cleaners. Use a damp cloth for

cleaning.

Ventilation – Openings in the cabinets

and tray front panels are provided for

ventilation. To ensure the reliable

Summary of content (13 pages)

PAGE 1
4-6 kW UHF Translator Chapter 1, Introduction Chapter 1 Introduction This manual explains the installation, setup, alignment, and maintenance procedures for the 837B 4-6 kW solid state UHF translator. It is important that you read all of the instructions, especially the safety information in this chapter, before you begin to install or operate the unit. relevant appendix that drawings for that item. the 1.
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4-6 kW UHF Translator Chapter 1, Introduction operation of the translator, and to protect the unit from overheating, these openings must not be blocked. should be cleaned of all dust or dirt to permit the free flow of air for cooling purposes. Servicing – Do not attempt to service this product yourself until becoming familiar with the equipment. If in doubt, refer all servicing questions to qualified Axcera service personnel.
PAGE 3
4-6 kW UHF Translator Chapter 1, Introduction slip should also include contact information and a brief description of why the unit is being returned. properly packed and returned by the buyer (transportation and insurance prepaid), and (c) Axcera determines, in its sole judgment, that the product is defective and not subject to any misuse, neglect, improper installation, negligence, accident, or (unless authorized in writing by Axcera) repair or alteration.
PAGE 4
-6 kW UHF Translator Chapter 1, Introduction ) WARNING!!! ½ HIGH VOLTAGE ¾ DO NOT ATTEMPT TO REPAIR OR TROUBLESHOOT THIS EQUIPMENT UNLESS YOU ARE FAMILIAR WITH ITS OPERATION AND EXPERIENCED IN SERVICING HIGH VOLTAGE EQUIPMENT. LETHAL VOLTAGES ARE PRESENT WHEN POWER IS APPLIED TO THIS SYSTEM. IF POSSIBLE, TURN OFF POWER BEFORE MAKING ADJUSTMENTS TO THE SYSTEM.
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4-6 kW UHF Translator Chapter 1, Introduction EMERGENCY FIRST AID INSTRUCTIONS Personnel engaged in the installation, operation, or maintenance of this equipment are urged to become familiar with the following rules both in theory and practice. It is the duty of all operating personnel to be prepared to give adequate Emergency First Aid and thereby prevent avoidable loss of life. RESCUE BREATHING 1. Find out if the person is breathing. You must find out if the person has stopped breathing.
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4-6 kW UHF Translator Note: Chapter 1, Introduction Because of possible FCC assigned offset, check for the assigned Carrier Frequency as written on License. UHF Channels NTSC Standard IF, 45.75 MHz Visual Carrier Frequency (MHz) L.O. (MHz) Crystal Frequency (MHz) Channel Nominal Minus Plus Nominal Nominal Minus Plus 14 471.25 471.24 471.26 517.00 64.625 64.62375 64.62625 15 477.25 477.24 477.26 523.00 65.375 65.37375 65.37625 16 483.25 483.24 483.26 529.00 66.125 66.
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4-6 kW UHF Translator Note: Chapter 1, Introduction Because of possible FCC assigned offset, check for the assigned Carrier Frequency as written on License. UHF Channels NTSC Standard IF, 45.75 MHz Visual Carrier Frequency (MHz) L.O. (MHz) Crystal Frequency (MHz) Channel Nominal Minus Plus Nominal Nominal Minus Plus 44 651.25 651.24 651.26 697.00 87.125 87.12375 87.12625 45 657.25 657.24 657.26 703.00 87.875 87.87375 87.87625 46 663.25 663.24 663.26 709.00 88.625 88.
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4-6 kW UHF Translator Note: Chapter 1, Introduction Because of possible FCC assigned offset, check for the assigned Carrier Frequency as written on License. UHF Frequency Assignments Channel Number Bandwidth (MHz) Video (MHz) Color (MHz) Audio (MHz) 14 470-476 471.25 474.83 475.75 15 476-482 477.25 480.83 481.75 16 482-488 483.25 486.83 487.75 17 488-494 489.25 492.83 493.75 18 494-500 495.25 498.83 499.75 19 500-506 501.25 504.83 505.75 20 506-512 507.25 510.
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4-6 kW UHF Translator Note: Chapter 1, Introduction Because of possible FCC assigned offset, check for the assigned Carrier Frequency as written on License. UHF Frequency Assignments Channel Number Bandwidth (MHz) Video (MHz) Color (MHz) Audio (MHz) 44 650-656 651.25 654.83 655.75 45 656-662 657.25 660.83 661.75 46 662-668 663.25 666.83 667.75 47 668-674 669.25 672.83 673.75 48 674-680 675.25 678.83 679.75 49 680-686 681.25 684.83 685.75 50 686-692 687.25 690.
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4-6 kW UHF Translator Chapter 1, Introduction dBm, dBw, dBmV, dBµV, AND VOLTAGE EXPRESSED IN WATTS 50 ohm system WATTS 1,000,000,000,000 100,000,000,000 10,000,000,000 1,000,000,000 100,000,000 10,000,000 1,000,000 100,000 10,000 1,000 100 50 20 10 1 0.1 0.01 0.001 0.0001 0.00001 0.000001 0.0000001 0.00000001 0.000000001 0.0000000001 0.00000000001 0.
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4-6 kW UHF Translator Chapter 1, Introduction USEFUL CONVERSION FACTORS TO CONVERT FROM TO MULTIPLY BY mile (US statute) kilometer (km) inch (in) millimeter (mm) inch (in) centimeter (cm) inch (in) meter (m) foot (ft) meter (m) yard (yd) meter (m) mile per hour (mph) kilometer per hour(km/hr) mile per hour (mph) meter per second (m/s) pound (lb) kilogram (kg) gallon (gal) liter U.S. liquid (One U.S. gallon equals 0.
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4-6 kW UHF Translator Chapter 1, Introduction ABBREVIATIONS/ACRONYMS AC Alternating Current dBw Decibel referenced to 1 watt AFC Automatic Frequency Control FEC Forward Error Correction ALC Automatic Level Control FM Frequency modulation AM Amplitude modulation Hz Hertz AGC Automatic Gain Control ICPM Incidental Carrier Phase Modulation AWG American wire gauge I/P Input BER Bit Error Rate IF Intermediate Frequency BW Bandwidth LED Light emitting diode DC Direct Current LS
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4-6 kW UHF Translator Chapter 1, Introduction RETURN LOSS VS. VSWR 0 -10 -20 R E T U R N L O S S -30 dB -40 -50 -60 -70 1.001 1.01 1.1 VSWR 837B, Rev. 0 1-13 2.