Technalogix TAVD-500 User manual

TAVD-500
POWER AMPLIFIER

You’ve already unpacked it, haven’t you? You’ve unpacked
it and plugged it in and turned it on and fiddled with the
knobs. No? Okay, good. Please take a few minutes to read
the manual and familiarize yourself with your new
Technalogix power amplifier.
We believe that this manual, and of course our equipment,
should be everything you need to get on the air with superb
broadcast quality video. We understand that a capable and
confident user will get the most out of our product and we
have made every attempt to educate readers of all technical
levels. If there is something that is not clear, or you require
further information, please do not hesitate to contact us and
we’ll be glad to help out.
Technalogix Ltd.
#4, 8021 Edgar Industrial Place
Red Deer, Alberta, Canada
T4P 3R3
Phone: [phone]
Fax: [phone]
URL: www.technalogix.ca
Email: [e-mail]
[e-mail]
We truly appreciate that you have chosen us as your
television broadcast system supplier. Happy viewing.

Table of Contents
SECTION I- SAFEGUARDS................................................................................................................. I-1
SAFETY AND FIRST AID.................................................................................................................... I-2
OPERATING SAFEGUARDS ............................................................................................................... I-3
SECTION II -WARRANTY ................................................................................................................ II-1
SECTION III -OVERVIEW................................................................................................................. III-1
STANDARD FEATURES ................................................................................................................... III-1
PRINCIPLE OF OPERATION ............................................................................................................. III-2
BLOCK DIAGRAM (TAVD-500)....................................................................................................... III-3
RF SIGNAL PATH........................................................................................................................... III-4
BLOCK DIAGRAM (TAVD-500)....................................................................................................... III-3
SPECIFICATIONS ............................................................................................................................ III-5
SECTION IV -RF COMPONENTS......................................................................................................IV-1
AMPLIFIER PALLETS ......................................................................................................................IV-1
SPLITTER/COMBINER .....................................................................................................................IV-4
DIRECTIONAL COUPLER.................................................................................................................IV-4
ISOLATOR......................................................................................................................................IV-4
FILTER ..........................................................................................................................................IV-4
SECTION V-POWER SUPPLY SECTION............................................................................................V-1
SECTION VI -MONITOR AND CONTROL SYSTEM ..............................................................................VI-1
CONTROL BOARD OVERVIEW (INSIGHT)..........................................................................................VI-1
USER INTERFACE MODULE .............................................................................................................VI-2
COUPLER CONDITIOING MODULE ....................................................................................................VI-3
RF CONDITIONING MODULE ...........................................................................................................VI-3
TEMPERATURE SENSOR MODULE...................................................................................................VI-3
TXNET MODULE.............................................................................................................................VI-3
REMOTE PORT...............................................................................................................................VI-4
FAULT SHUTDOWN.........................................................................................................................VI-5
BILL OF MATERIALS ......................................................................................................................VI-6
SCHEMATICS ...............................................................................................................................VI-12
SECTION VII -MECHANICAL SECTION ............................................................................................VII-1
SECTION VIII -INSTALLATION.......................................................................................................VIII-1
BUILDING RECOMMENDATIONS.....................................................................................................VIII-1
HEATING AND COOLING REQUIREMENTS.......................................................................................VIII-2
ELECTRICAL SERVICE RECOMMENDATIONS ..................................................................................VIII-3
ANTENNA AND TOWER RECOMMENDATIONS .................................................................................VIII-4
SHELTER SECURITY.....................................................................................................................VIII-5
UNPACKING AND INSPECTION.......................................................................................................VIII-6
LOCATION AND FUNCTION OF CONTROLS AND CONNECTORS (TAVD-500 POWER AMPLIFIER).......VIII-7
LOCATION AND FUNCTION OF CONTROLS AND CONNECTORS (COMBINER ENCLOSURE .................VIII-11

INITIAL HOOK UP……………………………………………………………………………………… VIII-13
SECTION IX -OPERATING PROCEDURE...........................................................................................IX-1
SECTION X-MAINTENANCE AND TROUBLESHOOTING.......................................................................X-1
TROUBLESHOOTING........................................................................................................................X-2

I-1
Technalogix Ltd TAVD-500 Transmitter
Section I - Safeguards
General Safeguards
This section is written as a general guide to keep all 5 fingers on your hand and is intended for
those having previous knowledge and experience with these kinds of equipment. It is not intended
to contain a complete statement of all safety precautions, which should be observed by personnel
using this or other electronic equipment.
DOCUMENTATION-Read,retainandfollowinstructions before operatingthe equipment.
There is a lot of useful information in the manual, and besides, we spent a lot of time
writing it!
ENVIRONMENT - To reduce the risk of fire or electric shock, do not expose this
equipment to rain, moisture, or rye and sodas at the company Christmas party. Refer all
servicing to qualified service personnel.
SERVICING - Do not attempt to service this equipment yourself as opening or removing
covers can result in a warm tingly feeling and will void the warranty. Refer all servicing to
qualified service personnel.

I-2
Technalogix Ltd TAVD-500 Transmitter
Safety and First Aid
Personnel engaged in the installation, operation,maintenance,or servicing of electronicequipment
are exposed to the hazard of high voltage. It is imperative that all safety regulations and
precautions are consistently observed. Knowledge of first aid procedures is recommended. The
following information is presented as a reference only.
•At all times, avoid placing any part of the body in series between ground and circuit points,
whether power is on or off.
•Dangerous voltage may be present in equipment even though power is off. Do not open the
cabinet. Refer servicing to qualified service personnel.
•It is the duty of all personnel to be prepared to give adequate emergency first aid treatment and
thereby prevent avoidable loss of life.
•There are three principle degrees of burns, recognizable as follows:
•a first-degree burn reddens the skin.
•a second-degree burn blisters the skin.
•a third degree burn chars the flesh and frequently places the victim in a state of shock
accompanied by respiratory paralysis.
•Respiratory paralysis can cause death by suffocation within seconds. It is imperative that the
approvedmethods of artificial respiration areinitiated immediatelyandcontinue untilthe victim’s
breathing is normal.
•A muscular spasm of unconsciousness may render the victim unable to break free of the
electric power. If this is the case, turn the power off immediately.
DO NOT TOUCH THE VICTIM OR YOU MAY SHARE THE SAME
PREDICAMENT.
•If the power cannot be turned off immediately, very carefully loop a dry rope, article of clothing,
length of strong cloth or a rolled-up newspaper around the victim and pull the victim free of the
power source. Carefully avoid touching the victim or clothing.
•Once free of the power source, the victim must be placed in a reclining position and covered
with a blanket or newspapers to keep warm. At the first opportunity, enlist help in
summoning a doctor. If a doctor cannot be summoned, transport the victim to the doctor or
a hospital. Be sure the victim is kept well covered and warm while awaiting professional
treatment.

I-3
Technalogix Ltd TAVD-500 Transmitter
Operating Safeguards
It is a known fact that our broadcast transmitters and translators enjoy 50-ohm load
impedances. So much so, that it is imperative you maintain 50-ohm impedances throughout
your system. In return, your equipment will provide you with maximum power transfer to the
antenna and decreased reflected power heading back towards the amplifier pallets, reducing
the amount of magic smoke that gets let out of the power amplifier. Before anything is turned
on, ensure that there is a 50-ohm path from the output of each stage to the input of the next, all
the way to the antenna.
In addition to maintaining proper 50-ohm impedances throughout the signal chain, it is also
important, whenever possible, to make sure the RF drive going to the input of the power
amplifier is removed before turning on or turning off the DC power supply. This is because all of
the RF transistors used in the individual amplifier pallets are fabricated with LDMOS (Laterally
Diffused Metal Oxide Semiconductor) technology. Nice and linear yes, but they do not like to
make any RF power when their supply voltages are not within a specific range. When you first
turn your power amplifier on or off, the DC power supply’s output voltage may take a while to
stable out to a safe operating voltage. Ten seconds wait before applying the RF drive will
ensure no issues arise.
Our power amplifiers are designed to reliably generate a specific RF output power. Failing to
adhere to overdriven amplifier warnings can decrease the reliability of your system, and frankly,
makes our repair department busy and grumpy. If you need to transmit to a little larger
coverage, you are better off increasing antenna gain, and more importantly, antenna height
above average terrain. On TV and FM broadcast frequencies, insufficient antenna height puts
an upper limit on your range, regardless of power levels, as the distance from your antenna to
the radio horizon is limited.

Technalogix Ltd TAVD-500 Transmitter
II-1
Section II - Warranty
Our legalese is straightforward. It is simplydesignedto give youpeaceof mind and helpsyou resist
the temptation to have your electronics friend try to repair your Technalogix product.
Technalogix Ltd. products have been completely tested and found to meet specifications and bein
proper operating condition. They are warranted to be free from defects in materials and
workmanshipfor a period of oneyear from the date ofshipment. If the system becomesdamaged in
shipment and there are obvious signsof damage to theoutsideof the packaging, notifyyour courier
immediately before that courier walks out the door.
Technalogix Ltd. will not be liable for damages of whatever nature arising out of or in connection
with the equipment or its use thereof. Technalogix does not assume responsibility for injury or
damage resulting from the practices of untrained or unqualified personnel in the handling of this
equipment.
Technalogix Ltd. warranty does not include:
•misuse, neglect or accident.
•incorrect wiring and /or improper installation.
•unauthorized repairs, modifications or use in violation of instructions issued by Technalogix.
•incidental or consequential damages as a result of any defect.
•reshipment cost or insurance of the unit or replacement units or parts.
•acts of nature or terrorism.
Technalogix agrees, at our option, to remedy warranted defects or furnish a new part in exchange
forany part of a unitwhich, under normal installation, useand service, becomes defective. Theuser
will pay for transportation costs to and from the repair center. If you require technicalservice on the
site, the cost to you will be $800.00 US per day plus air fare and meals.

Technalogix Ltd TAVD-500 Transmitter
II-2
To claim your rights under this warranty:
•Contact Technalogix and describe the problem in as much detail as possible. See
troubleshooting section in this manual. If a solution cannot be found at this time, it may be
determined that the unit will have to be returned to Technalogix for repair, once a Return
Materials Authorization (RMA) number is provided. Please look under our web site
(www.technalogix.ca) for the RMA form (Service) and fill it out. Either fax it to us or email to us.
•Packageequipment carefully for prepaid shipmentto Technalogix. Include a written description
of the problem experienced, a copy of the original invoice establishing warranty status, and the
RMA.
Technalogix reserves the right to make revisions in current production of the equipment and
assumes no obligation to incorporate these changes in earlier models.
Shipping Address:
Technalogix Ltd.
ATTN:RMA#
#4, 8021 Edgar Industrial Place
Red Deer, Alberta, Canada
T4P 3R3
Ph: 403.347.5400
Made in Canada, returned for repairs

Technalogix Ltd TAVD-500 Transmitter
II-3
Terms & Conditions of Sale
Sales by Technalogix Ltd (“Seller”) are made only on the terms which are contained in this
Terms and Conditions of Sale Policy. Seller hereby gives notice of its objection to any different
or additional terms and conditions. All sales are expressly conditional upon Buyers’ assent to
the terms and conditions set forth below. These terms and conditions may be modified or
supplemented only by a written document sighed by the authorized representative of Seller.
These terms and conditions supersede any prior and/or contemporaneous agreements or
correspondence between Buyer and Seller. Any order received and accepted by Technalogix
Ltd (Seller) shall be construed as an acceptance of Seller’s offer to sell its products to the
purchaser (Buyer) in accordance with the terms and conditions of sale set forth herein. No
waiver, whether express or implied, by Seller of any of the terms or conditions hereof shall be
deemed a continuing waiver or trade custom between the parties, but shall apply solely to the
instance to which the waiver is directed.
Ordering Information
All orders must be in writing and/or accompanied by a PO. 50% down payment is required with
all orders. No orders are considered an order until the down payment has been paid.
Order Confirmation
A purchase order is not binding on Seller until Buyer has received Seller’s order confirmation or
acknowledgement.
Pricing Policy
Prices for products do not include taxes or any additional charges. All prices are FOB shipping
point and prices do not include freight/handling charges and insurance charges. All prices are
in U.S. currency.
All prices published or quoted by Seller may be changed at any time without notice. Unless
otherwise specified, written quotations expire thirty (30) days from the date issued and are
subject to change or termination by notice during this period.
Taxes
Prices for all products do not include any sales, use, excise or other taxes. Buyer agrees to pay
all applicable federal, state, and local taxes, duties and other fees on product and services
ordered. If Buyer claims an exemption form any tax, Buyer shall submit to Seller the
appropriate exemption certificates.
Shipping
Shipping is the responsibility of the Buyer. This includes all freight, custom and brokerage
charges and duties.