HD Communications HD33568 1500 Watt RF Amplifier User Manual

HD Communications HD33568 1500 Watt RF Amplifier User Manual

HD Communications
Model: HD33568

COPYRIGHT
This manual and the information of this document is the proprietary property of HD Communications Corporation. No part of this document may be reproduced or copied without the express written permission of HD Communications Corporation. Any unauthorized use of this manual or its contents is strictly prohibited. All Rights Reserved.

DISCLAIMER AND LIMITATION OF LIABILITY
The information contained in this manual is subject to change by HD Communications Corporation without prior notice. HD Communications Corporation makes no warranty of any kind, either expressed or implied, with respect to the information contained herein. HD Communications Corporation shall not be liable in damages, of whatever kind, as a result of the reliance on or use of the information contained herein.

FCC Compliance notes
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.

NOTE: THE GRANTEE IS NOT RESPONSIBLE FOR ANY CHANGES OR MODIFICATIONS NOT EXPRESSLY APPROVED BY THE PARTY RESPONSIBLE FOR COMPLIANCE. SUCH MODIFICATIONS COULD VOID THE USER’S AUTHORITY TO OPERATE THE EQUIPMENT.

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: – Reorient or relocate the receiving antenna. – Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help.

IMPORTANT SAFTEY INFORMATION

Warning:

• For safe operation and installation, please read this manual prior to using this product.
• Practice all local facility and product safety instructions and precautions.
• Failure to follow the manual instructions may cause death, personal injury or property damage.
• HD Communications Corporation provides information concerning the hazards of the product and its use, but assumes no responsibility for any operator miss-use of the product or conflicting local safety practices
• INTERLOCKS OR GROUNDING MUST NOT BE BYPASSED OR DISREGARDED

Chapter 1: Safety Guidlines

1.1 Important Safety Information
To ensure safe installation and operation of the HD33568 RF Amplifier, read and understand this manual before installation and any attempt to operate this product. At a minimum, read and follow the safety instructions and practices in section “Rules for Safe Installation and Operation” below.

1.2 Rules for Safe Installation and Operation

1. Do not attempt to install or operate this equipment without proper training
2. Ensure that the unit is properly grounded (see Grounding and Grounding)
3. Ensure that all cables are properly connected
4. Verify that input voltage and current capacity are within specifications prior to turning on the product (see AC Specifications)
5. Use proper electrostatic discharge (ESD) and lockout/tagout precautions
6. Always be careful around this product

1.3 Cautions and Safety
Follow all warnings and instructions marked on or supplied with the product.

Symbology:

WARNING

THE CURRENTS AND VOLTAGES IN THIS PRODUCT ARE DANGEROUS. PERSONNEL MUST OBSERVE SAFETY REGULATIONS AT ALL TIMES.

This manual is intended as a general guide for trained and qualified personnel who are aware of the dangers inherent in handling potentially dangerous electrical and electronic circuits. It is not intended to contain a complete statement of all safety precautions which should be observed by personnel in using this or other electronic equipment.
The installation and operation of this equipment involves risks both to personnel and equipment. It must be performed only by qualified personnel exercising due care. HD Communications Corporation shall not be responsible for injury or damage resulting from improper procedures or from the use of improperly trained or inexperienced personnel performing such tasks.
During installation and operation of this equipment, all applicable building codes and fire protection codes must be observed.
Do not remove, short-circuit, or tamper with interlock switches. Keep away from live circuits. Know your equipment and don’t take chances Do not remove, short-circuit, or tamper with interlock switches. Keep away from live circuits. Know your equipment and don’t take chances
This RF Amplifier is air cooled. DO NOT OPERATE THE RF AMPLIFIER WITHOUT ADEQUATE AIR FLOW.

WARNING

DAMAGE CAUSED TO THE AMPLIFIER BY INADEQUATE AIR FLOW IS NOT COVERED BY WARRANTY. DO NOT RESTRICT THE EXHAUST IN ANY WAY. DO NOT VENT THE EXHAUST WHERE WIND, OR OTHER FORCES CAN CAUSE BACK PRESSURE.

This unit complies with FCC RF exposure limits for an uncontrolled environment. To comply with FCC exposure limit requirements, antennas must be operated at a minimum distance of 7.76m between the radiator and any person’s body.

WARNING

THIS AMPLIFIER GENERATES RF ENERGY. EXPOSURE TO RF ENERGY CAN BE HAZZARDOUS TO HUMAN HEALTH.
MAINTAIN ADEQUATE DISTANCE FROM THE ANTENNA THAT RADIATES THE ENERGY GENERATED BY THIS AMPLFIER.

Do not use this equipment near water, wet locations, or outdoors.
Do not place this equipment on an unstable cart, stand, or table. The HD33568 RF Amplifier may fall, causing personal injury or damage to the RF Amplifier.
To avoid electric shock, this unit must be connected to the power source in compliance with the National Electrical Code ANSI C1 and/or any other codes applicable to the user. Improper installation may result in a shock or fire hazard.
It is the responsibility of the installer to provide a proper protective ground from the HD33568 RF Amplifier to earth ground, in accordance with local and national electrical codes, and any other codes applicable to the user.
The HD33568 RF Amplifier should be operated from the type of power source indicated by the serial tag and AC Input Specifications. If you are not sure of the type of power available, consult the system integrator, an electrician, or your local power company.
Do not allow anything to rest on the power cable, RF cables, or other interconnecting cables. Do not locate the HD33568 RF Amplifier where people will step on the power, RF, or interconnecting cables.
Slots and Openings in the equipment’s chassis are provided for ventilation. To ensure reliable operation of the HD33568 RF Amplifier, these openings must not be blocked, covered, or restricted. Restricting the air inlets or exhaust will cause the unit to overheat. Sustained over temperature conditions may degrade or cause damage.
Never push objects of any kind into the slots and openings of the HD33568 RF Amplifier enclosure. They may touch dangerous voltage points or short out parts, which could result in a fire or electric shock.
Never spill liquid of any kind on or into the HD33568 RF Amplifier.
Never remove covers or guards that require a tool for removal. THERE ARE NO OPERATOR SERVICABLE AREAS WITHIN THE COVERS. Refer servicing to qualified service personnel.

Chapter 2:  Product Overview

2.1 Operation Overview
The purpose of this RF Amplifier is to convert AC line voltage (and current) to precise, highly regulated, RF power. The major sub-assemblies include: AC to DC conversions, power amplifier, RF power measurement and microprocessor- based controls.

Figure 1- Simplified Block Diagram

Chapter 3:  Specifications

3.1 Physical Description
The HD33568 is housed in a 19” rack chassis see (Mechanical ) for details. AC power input and circuit breaker are located on the rear of the chassis. The RF Output is on the rear of the chassis. A fan is mounted behind the front panel. Air flow in from the front and side of the unit and exhausted through the rear.
The rear panel contains the Serial connector (DB9 female), RJ-45 (TCP/IP connector), RF Input (type N female), RF Output (7/16” DIN), Key (RCA phono female).
The HD33568 uses a 5.4” (13.7cm) TFT touchscreen display. All set up of the Amplifier ’s local controls, readings, etc. are performed from the display.

3.2 Electrical Description
The Amplifier requires a single phase power source see (AC Input Specification).
The Controller section communicates with the appropriate I/O (front panel, serial, TCP/IP) to generate all RF functionality. The controller section also supplies feedback as to control settings and status (digital and analog) of the Amplifier.
The RF Amplifier section consists of multiple stages. The amplifier takes the output of the exciter and amplifiers to the specified power output.

3.3 General Specifications

3.4 Equipment Identification
The Amplifier is identified by a Model Number and Serial Number located on the top of the chassis. All correspondence to the factory should reference the complete Model and Serial Numbers.

Chapter 4: Installation

4.1 Initial Inspection
Carefully inspect the Amplifier for any evidence of shipping damage. This inspection should include observing all sides of the chassis for physical damage. Observe the front panel. If the display shows any scratches or alignment problem, it may indicate that the Amplifier was handled roughly or dropped. Check the shipping documents against the received material to ensure that the shipment is complete. NOTIFY THE SHIPPING CARRIER AND HD COMMUNICATIONS IMMEDIATELY OF ANY DAMAGE OR MISSING MATERIAL.

4.2 Environmental Requirements
The Amplifier must be kept in a clean, dry environment. Adequate external heat must be provided to keep the temperature above 0 oC. Enough ventilation or air conditioning should be provided to keep the building temperature below 55 oC when all equipment in the building is in operation. DO NOT COVER THE TOP OR SIDES OF THE CHASSIS OR RESTRICT AIR FLOW IN ANY MANNER.

4.3 Mechanical Requirements
The Amplifier must be placed in a sturdy rack or shelf which can safely support the weight of the unit. Adequate space should be provided on all sides of the chassis for proper air flow.

4.4 Electrical Requirements
The HD33568 s require AC power. It is suggested that the wiring to the Amplifier be capable of handling a load of at least 2 times the power output of the Amplifier. The power must be routed through a fused disconnect switch or circuit breaker which can be used to remove all power from the Amplifier. THIS IS AN IMPORTANT SAFETY REQUIREMENT.

NOTE
IT IS THE RESPONSIBILITY OF THE CUSTOMER TO CHECK AND ADHERE TO ALL LOCAL AND NATIONAL ELECTRICAL CODES REGULATING THE INSTALLATION OF THIS EQUIPMENT.

4.5 System Connections

Figure 2 – Rear Panel

Primary Power

• The HD33568 has a fixed line cord with a 20 Amp L620 plug
• Connect the appropriate plug to line cord or connect line cord to distribution panel
• When needed use the circuit breaker to apply AC power to the RF Amplifier.

RF Output

• Connect an appropriate 50-ohm coaxial cable to the RF output connection on the rear of the Amplifier and a suitable load. Depending on the output power rating of the Amplifier, load configuration, and application, several coaxial cable types can be used. Contact HD Communications Corporation to help select the cable appropriate for your application.
• Be sure to install the interlocked cover over the RF output connector to ensure the RF output interlock is closed. If the cover is not in place properly, the interlock will be open, and the Amplifier will not operate.

WARNING
Do not enable mains power or operate the RF Generator without connecting a suitable load to the RF Output. Operating without a suitable load connected to the RF Output may be hazardous.

Other rear panel connections

Ground – Stud to connect Amplifier chassis ground. This is used for RF grounding and not AC power input grounding.

Chapter 4: Serial Interface

5.1 Serial Interface Hardware
The serial connector is a DB9 female located on the rear panel of the Amplifier . Serial control and status signals are available at this connector for operation of the Amplifier . The Amplifier responds to inputs from this connector when the Amplifier ‘Settings’ are set to ‘Serial’.

Follows are detailed pin descriptions for this connector.

5.2 Serial Interface Commands
The RS232 interface is set up as follows:
• 19200 BAUD
• 8 Bit Data
• 1 Stop Bit
• No Parity
• No Handshake

All serial commands must be terminated with an “ENTER” key. This key is the ASCII character code for Carriage Return. It is a decimal value “13”, or and 8-bit value of “00001101”.

Chapter 6: Active Display Operation

6.1 Display Overview
When the Amplifier is first turned on, the front panel display will go through a startup routine. When completed, the status screen will appear.

Figure 3 – Initial Active Display

This screen will be a general display of all the operating parameters of the Amplifier .
The Forward and Reflected Power will be continuously displayed.
Power amplifier DC voltage, Drain voltage, PA Current, and heat sink temperature are constantly displayed.
About, RF On and Settings buttons are also available.

6.2 Front Panel Commands

Chapter 7: Initial Turn On Procedure

WARNING

THIS RF GENERATOR USES HIGH VOLTAGE! YOU CAN BE SERIOUSLY INJURED OR KILLED BY THE AC LINE. ALWAYS USE EXTREME CARE WHEN WORKING ON ANY HIGH-POWER ELECTRICAL EQUIPMENT.

7.1 AC Power Connection
Confirm that AC power is disconnected to the Amplifier (Customer installed AC disconnect is in the OFF position).

NOTE:
FOLLOW THIS PROCEDURE EXACTLY WHEN PLACING THE GENERATOR IN OPERATION FOR THE FIRST TIME. THE PROCEDURE IS DESIGNED TO FIND INSTALLATION PROBLEMS BEFORE ANY DAMAGE OCCURS TO THE GENERATOR. IF AT ANY STEP IN THE PROCEDURE, THE REQUIRED RESPONSE IS INCORRECT, STOP AND FIND THE PROBLEM BEFORE CONTINUING.

7.2 Installation Checkout

• Recheck all electrical and mechanical details for conformance to requirements set out in Connections and Interface and Mechanical Specifications.
• Ensure that all covers are in place on the chassis.
• Check that all air intake and exhaust areas are clear from obstructions.

7.3 Grounding

****WARNING:
Do not turn on power until unit is properly grounded.

A stud is located on the rear panel of the unit. Proper grounding to this stud minimizes or eliminates radio frequency interference. Improper ground connections can result in poor RF performance and cause unusual problems. Please take care to use good practices when implementing a RF ground

7.4 Initial Turn On Procedure
Recheck that the AC Power to the Amplifier is correct. Turn OFF the customer- supplied external disconnect.
Recheck that the RF transmission line and load are properly connected.

CAUTION
IT IS PRESUMED THAT THE GENERATOR IS TO BE OPERATED ON THE FREQUENCY AND AT THE POWER LEVEL FOR WHICH IT WAS OPTIMIZED AT THE FACTORY. CONSULT QEI TECHNICAL SUPPORT NOW IF ANY CHANGES ARE REQUIRED.

WARNING
THE NEXT STEP WILL APPLY AC POWER TO THE GENERATOR. BEFORE PROCEEDING, VERIFY THAT ALL PERSONNEL ARE CLEAR OF ELECTRICAL HAZARDS. THIS INCLUDES PERSONNEL NEAR THE LOAD.

• Be sure the RF Output of the Amplifier is connected.
• Apply AC Power to the Amplifier (turn external customer supplied disconnect ON). Be sure the circuit breaker on the rear of the amplifier is ON. Turn the power switch on the front of the Amplifier ON. The front panel display will go through a loading procedure. The Amplifier is now ready for operation.

7.5 Tuning Procedure

• Be sure that the amplifier is ready for operation. Section 7.4.
• Be sure the rear panel ANTENNA connector is connected to a proper load or antenna.
• Set the GAIN control on the rear panel to a minimum (full counter-clockwise)..
• Ensure that the exciter output is less than 5 Watts.
• Set the exciter to the operating frequency.
• Key the exciter. You should have an indication of power output from HD33568.amplifier.
• Check the forward and reflected power. The reflected power should be very low (less than 10% of the forward power). If not, you should check your load or antenna and transmission line.
• If you have forward power and the reflected power is low, slowly adjust the GAIN control on the rear panel for the desired power output. If needed, also increase the exciter output power to reach the desired output power. Note: If you exceed 1500 Watts, the amplifier will give a warning to reduce power.

7.6 Normal Operation

• Local Control – Use the front panel display for operation in this mode.
• Remote Control – Use the Analog Input on the rear panel for operation in this mode. Refer to section Setpoint Source for details.
• Serial Control – Use the Serial Input on the rear panel for operation in this mode. Refer to section Serial Interface and Serial Interface Commands for details.

Chapter 8: Warranty

All HD33568 equipment designed and manufactured by HD Communications Corporation is warranted against defects in workmanship and material that develop under normal use within a period of eighteen (18) months (unless stated otherwise on the Product Quote) from the date of original shipment subject to the following conditions and limitations:

8.1 Conditions and Limitations
The purchaser is not in default under his contract of purchase.
The sole responsibility of HD Communications Corporation for any equipment not conforming to this warranty shall be, at QEI’s option:

• To repair or replace such equipment or otherwise cause it to meet the represented specifications either at the purchaser’s installation or upon return thereof F.O.B. Williamstown, New Jersey, as directed by HD Communications Corporation; or
• To demonstrate that the equipment has no defect in workmanship or material and that it meets the represented specifications, in which event all expenses reasonably incurred by HD Communications Corporation in so demonstrating including but not limited to cost of travel to and from the purchaser’s installation, and subsistence, shall be paid by purchaser to HD Communications Corporation.
• In case of any equipment thought to be defective, the purchaser must, within seven (7) days notify HD Communications Corporation, in writing (fax or e-mail is acceptable), giving full particulars as to the defects. Upon receipt of such notice, HD Communications Corporation will give instructions respecting the shipment of the equipment, or such other manner as it elects to service this warranty as above provided.
• Equipment shall not be deemed to be defective if, after examination by HD Communications Corporation, the equipment evidences damage from moisture, temperature, lightning, improper handling, installation, operation, accident, or abuse.
• This warranty extends only to the original purchaser and is not assignable or transferable.

NO OTHER WARRANTIES, EXPRESS OF IMPLIED INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE SHALL BE APPLICABLE TO ANY EQUIPMENT SOLD BY HD COMMUNICATIONS CORPORATION, AND NO REPRESENTATIVE OR OTHER PERSON IS AUTHORIZED BY HD COMMUNICATIONS CORPORATION TO ASSUME FOR IT ANY LIABILITY OR OBLIGATION WITH RESPECT TO THE CONDITION OR PERFORMANCE OF ANY EQUIPMENT SOLD BY IT, EXCEPT AS PROVIDED IN THIS WARRANTY. THIS WARRANTY PROVIDES FOR THE SOLE RIGHT AND REMEDY OF THE PURCHASE AND HD COMMUNICATIONS CORPORATION SHALL IN NO EVENT HAVE ANY LIABILITY FOR CONSEQUENTIAL DAMAGES OR FOR LOSS, DAMAGE, OR EXPENSE DIRECTLY OR INDIRECTLY ARISING FROM THE USE OF THE EQUIPMENT PURCHASED FROM HD COMMUNICATIONS CORPORATION.

Chapter 9: QEI Contact Information

9.1 Service
For service on any HD Communications Products, contact:
HD Communications Corporation
338 Jericho Turnpike, Unit 387
Syosset, NY 11791
USA

Telephone: +631-588-3877
e-mail: sales@hdcom.com
web: www.hdcom.com

9.2 RMA Request
Please contact HD Communications for a Return Material Authorization (RMA) before returning any products to HD Communications. Any products returned without a proper RMA may have a delay in service.

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References

• HDComm . Com - Design, Manufacturing, Marketing and Distribution of Wireless Broadband RF and Microwave components and systems since 1991- HD Communications Corp (888)588-3800)

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