Quark Eagle 2000 User Manual
Quark BROADCASTING SRL Via Copernico 2 – 20019 Settimo Milanese (MI) - Italy
Tel. +39 02 023288410 – email info@quarkelectronics.it – www.quarkelectronics.it
Eagle 2000
Ultra-compact 2 kW FM R.F. Amplifier
User’s Manual
Revision 1.0
ON/STAND-BY
Eagle 2000 – 2kW FM Broadcasting Amplifier
User’s manual – Page 2 of 66
Preliminary notes
We used the utmost care in making a complete manual with detailed, accurate and updated information, yet the contents herein cannot be
regarded as totally binding towards our company.
Quark, in their constant commitment to improve the quality of their products, reserve the right to vary the technical features of the same
without prior notice. For a full update please visit our web-site www.quarkelectronics.it or contact our local dealer or agent.
The manufacturer will not be held responsible for any consequence caused by errors or improper handling on which he has no direct
control.
According to the requirements of our customers, the described options may vary from model to model.
All rights reserved. No part of this document can be reproduced in any form or by any means, including recording or photocopy without
Quark’s prior written authorization.
Via Copernico, 2
20019 Settimo Milanese (MI) Italy
Ph. +0039-02-023288410
e-mail: info@quarkelectronics.it
Web site: www.quarkelectronics.it
Quark Broadcasting S.r.l. hereby declares that the object of this manual complies with the requirements specified in the 1999/05/EC
directive.
Eagle 2000 – 2kW FM Broadcasting Amplifier
User’s manual – Page 3 of 66
Contents
1 INTRODUCTION .......................................................................................................................... 5
2 GENERAL INFORMATION ............................................................................................................ 6
2.1 Safety suggestions........................................................................................................................6
2.1.a General safety recommendations......................................................................................................6
2.1.b Good practices..................................................................................................................................7
2.1.c First aid in case of electrical shock....................................................................................................7
2.1.d Emergency resuscitation technique...................................................................................................7
2.1.e Treatment for burns...........................................................................................................................8
2.2 Symbols used in this document ....................................................................................................9
3 WARNINGS ..............................................................................................................................10
3.1 Safety first!...................................................................................................................................10
4 PARTS DESCRIPTION................................................................................................................ 11
4.1 Front view.................................................................................................................................... 11
4.2 Control panel...............................................................................................................................11
4.3 Rear view.....................................................................................................................................12
4.4 Internal top view - main parts location.........................................................................................13
5 CIRCUITS DESCRIPTION............................................................................................................ 14
5.1 Power supply unit........................................................................................................................ 14
5.1.a Power supply unit connections and indications...............................................................................14
5.1.b Main power supply switch and power supply relay..........................................................................15
5.2 R.F. amplifier section................................................................................................................... 15
5.2.a Connections of the R.F. amplifier section........................................................................................15
5.3 Control (CPU) board....................................................................................................................16
5.3.a Control board connections and commands.....................................................................................16
5.4 Analog board...............................................................................................................................17
5.4.a Adjustment of the maximum output Power level..............................................................................17
5.4.b Adjustment of direct and reflected power levels readings................................................................17
5.4.c Analog board connections...............................................................................................................17
5.5 Fans control board ......................................................................................................................18
5.5.a Fans control boar d connections ......................................................................................................18
5.6 LCD display and control panel board.......................................................................................... 18
5.7 Digital encoder (multifunction knob)............................................................................................19
6 INSTALLATION ......................................................................................................................... 20
6.1 Checking the supplied parts........................................................................................................ 20
6.2 General safety rules.................................................................................................................... 20
6.3 Placing the equipment.................................................................................................................20
6.3.a Choosing the proper room and location...........................................................................................20
6.3.b Environmental Conditions................................................................................................................20
6.3.c Electrical conditions.........................................................................................................................21
6.4 Connecting the equipment .......................................................................................................... 21
6.4.a Connecting the ant enna ..................................................................................................................21
6.4.b Connecting the AC power line .........................................................................................................21
6.4.c Connecting to the exciter.................................................................................................................22
7 BASIC OPERATIONS .................................................................................................................23
7.1 Turning on/turning off..................................................................................................................23
7.1.a First switching on ( during installation)..............................................................................................23
7.1.b Adjusting the output power ..............................................................................................................23
7.1.c Setting the display language ........................................................................................................... 24
7.1.d Setting date and time.......................................................................................................................24
7.1.e Turning off.......................................................................................................................................26
8 USE OF THE MENUS.................................................................................................................. 27
8.1 Use of the multifunction knob......................................................................................................27
8.2 Navigating the menu ...................................................................................................................27
8.3 Confirming/quitting the settings................................................................................................... 28
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9 MENU DESCRIPTION ................................................................................................................. 29
9.1 Startup page................................................................................................................................ 29
9.2 Working Page...........................................................................................................................29
9.3 Main menu................................................................................................................................... 29
9.4 Set Power Output menu........................................................................................................30
9.5 Debug Page menu..................................................................................................................... 30
9.5.a Analog Inputs menu ..................................................................................................................30
9.5.b Logic Inputs menu.....................................................................................................................31
9.5.c Encoder Test menu.....................................................................................................................32
9.6 Language menu......................................................................................................................... 32
9.7 Set Function, Size menu ...................................................................................................32
9.8 Set LCD Contrast menu........................................................................................................32
9.9 Set Clock menu....................................................................................................................... 33
9.10 Info Page menu....................................................................................................................... 33
10 SET FUNCTION, SIZE MENU .................................................................................................... 34
10.1 Program page menu ................................................................................................................34
10.1.a Function menu............................................................................................................................35
10.1.b Power size menu........................................................................................................................35
10.1.c Show Timers menu....................................................................................................................... 36
10.1.d Set power saver menu .............................................................................................................. 36
10.1.e Set a new password menu........................................................................................................37
11 MAINTENANCE AND WARRANTY................................................................................................ 39
11.1 Maintenance................................................................................................................................ 39
11.1.a Clogging by dust..............................................................................................................................39
11.1.b Cooling fans ....................................................................................................................................39
11.1.c Periodic overhaul.............................................................................................................................39
11.2 Warranty...................................................................................................................................... 39
12 TROUBLESHOOTING AND ALARMS ............................................................................................40
12.1 Types of alarms and relevant LEDs information.........................................................................40
12.2 Alarm messages.......................................................................................................................... 41
13 TECHNICAL FEATURES ............................................................................................................. 42
14 INDEX ...................................................................................................................................... 43
15 ELECTRICAL, MECHANICAL DIAGRAMS AND PARTS LOCATION ...................................................45
16 DECLARATION OF CONFORMITY ...............................................................................................66
Eagle 2000 – 2kW FM Broadcasting Amplifier
User’s manual – Page 5 of 66
1 INTRODUCTION
Congratulations for your choice! Eagle 2000 is new-concept, FM broadcasting solid state (MOS-FET), wide-band 2.000 W amplifier.
The system is so compact it can be entirely fitted into a 19" 2 unit rack 500 mm depth, which makes Eagle 2000 the ideal solution for
medium power repeaters in unattended stations, in N+1 systems and also as a spare amplifier. These are only some of the state-ofthe-art features that make the Eagle 2000 a truly unique device:
• Ultra compact size and reduced weight (15 kg).
• Thoroughly modular construction. The R.F. amplifier is composed of 3 ultra-compact new-generation internal modules.
Such modules are easy to identify and inspect.
• High reliability. Thanks to the internal balance circuits, in case one of the three internal modules fails, the other mod ules left
are automatically re-balanced, thus to continuing the operation at reduced power.
• Better reliability. The rated output power (2000W) is reached at the 80% of the maximum output power the equipment can
generate (2400W).
• Low operation costs. The special care taken in the design, aimed at minimizing intern al losses, allows a very high electrical
efficiency to be achieved thus minimizing power consumption an d thereby reducing operation costs.
• High ventilation and low heat sinking. The reduced internal losses and high overall efficiency minimize heat sinking. As a
result, the size of the internal ventilation system can meet even the most demanding environmental conditions.
• Large allowable bandwidth and low maintenance requirements.
• Interactive control panel with LCD display. Enables the user to set easily the equipment modes and commands and to
display the operation parameters through the practical multifunction knob.
• Sturdy modular mechanical and electrical construction. It guarantees a high MTBF and an easy maintenance.
• High efficiency. To control the output power level the output power loop control adjust s first the power supply voltage of the
MOS FET and, if it’s not sufficient, it adjusts the Bias voltage.
• Continuous control of the cooling fans speed. This control allows a constant temperature of the amplifier heatsink, and a
longer lifespan of the cooling fans.
• Automatic reset when an active alarm ends. When an active alarm ends, the equipm ent is able to automaticall y reset itself,
without the need of human intervention.
• Simple diagnostics and unambiguous parameters reading. This is due to a comprehensive metering and alarm section on
LCD display. Thanks to the optional external telemetry system (available with the next version of Eagle 2000), parameters and
alarms are easily accessible from remote posts through the relevant remote control input.
• Compliance with the strictest norms. The equipment was designe d in compliance with the tightest international norms, as
well as the recent, strict anti-magnetic noise EC requirements. Besides, the equipment complies with the EC and ETSI
302.018-2 v 1.1.2.1 (2006-03) standards.
Please note that the manufacturer, in his continuous attempt to improve further the quality of his product, reserves the right to
vary its technical features without prior notice.
, Warning! Before carrying out any operation, it is essential to read the whole of the present manual – with particular
reference to Chapters
2 and 3 – in order to avoid damages to objects and people.
Eagle 2000 – 2kW FM Broadcasting Amplifier
User’s manual – Page 6 of 66
2 GENERAL INFORMATION
2.1 Safety suggestions
Regardless of how well electrical equipment is designed, personnel can be exposed to dangerous electrical shock when
protective covers are removed for maintenance or other activities. Therefore, the user is obliged to see that all safety
regulations are consistently observed and that each individual assigned to the equipment has a clear understanding of the
first aid related to electrical shocks (see following pages).
IN ADDITION THESE SAFETY PRACTICES MUST BE FOLLOWED:
• Do not attempt to adjust unprotected circuit controls or to dress leads with power on.
• Always avoid placing parts of the body in series between ground and circuit points.
• To avoid burns, do not touch heavily loaded or overheated components without precautions.
• Remember that some semiconductor cases and solid-state circuits carry high voltages.
• Do not assume that all dangers of electrical shock are removed when the power is off. Charged capacitors can retain
dangerous voltages for a long time after power is turned off. These capacitors should be discharged through a suitable resistor
before any circuit points are touched.
• Don't take chances. Be fully trained. Quark Broadcasting equipments should be operated and maintained b y fully qualified
personnel.
• Do not servic e alone and do not perform internal adjustments of these units unless anot her person capable of rendering first
aid and resuscitation is present.
• Some components used in the construction of this equipment contain Beryllium Oxide (BeO). This substance is harmless as it
is, but becomes highly dangerous if it’s ground to powder. Special procedures of disposal must be observed in case of failure of
these devices.
2.1.a General safety recommendations
When connecting the equipment to the power, please follow these important recommendations:
• These products are intended to operate from a power source that will not apply more than 10% of the voltage specified on
technical specifications between the supply conductors or between either supply conductor and ground. A protective-grou nd
connection by way of the grounding conductor in the power cord is essential for safe operation.
• This equipment is grounded through the grounding conductor of the power cord. To avoid electrical shock, plug the power cord
into a properly wired socket before connecting to the product input or output terminals.
• Upon loss of the protective-ground connection, all accessible conductive parts (including parts that may appear to be
insulating) can render an electric shock.
• To avoid fire hazard, use only fuses of correct type, voltage rating, and current rating. Refer fuse replacement to qualified
service personnel.
• To avoid explosion, do not operate this equipment in an explosive atmosphere.
• To avoid personal injury, do not remove the product covers or panels. Do not op erate the product without the covers and
panels properly installed.
Note: This section is not intended to contain a complete statement of all safety precautions which
should be observed by personnel in using this electronic equipment or others.
Quark Broadcasting SHALL NOT BE responsible for injury or damage resulted from improper procedures or
from using it by improperly trained or inexperienced personnel.
Eagle 2000 – 2kW FM Broadcasting Amplifier
User’s manual – Page 7 of 66
2.1.b Good practices
In maintaining the equipment covered in this manual, please keep in mind the following, standard g ood practices:
• When connecting any instrument (wattmeter, spectrum analyzer, etc.) to a high frequency output, use the appropriate
attenuator or dummy load to protect the final amplifiers and the instrument input.
• When inserting or removing printed circuit boards (PCBs), cable connectors, or fuses, always turn off power from the affected
portion of the equipment. After power is removed, allow sufficient time for the power supplies to bleed down before reinserting
PCBs.
• When troubleshooting, remember that FETs and other metal-oxide semiconductor (MOS) devices may appear defective
because of leakage between traces or component leads on the printed circuit board. Clean the printed circuit board and
recheck the MOS device before assuming it’s defective.
• When replacing MOS devices, follow standard practices to avoid damage caused by static charges and s old ering.
• When removing components from PCBs (particularly ICs), use care to avoid damaging PCB traces.
2.1.c First aid in case of electrical shock
If someone seems unable to free himself under electric shock contact, turn the power off before rendering aid. A muscular spasm or
unconsciousness can make a victim unable to free himself from the electrical power.
If power cannot be turned off immediately, very carefully loop a length of dry non-conducting materi al (such as a rope, insulating
material, or clothing) around the victim and pull him free of the power. Carefully avoid touching him or his clothing until free of power.
2.1.d Emergency resuscitation technique
Step 1
Check the victim for responsiveness. If there is no response
, immediately call for
medical assistance, and then return to the person.
Step 2
Position the person flat on his back. Kneel by his side and place one hand on the
forehead and the other under the chin. Tilt the head back and lift the chin until teet h
almost touch. Look and listen for breathing.
Step 3
If not breathing normally, pinch the nose and cover the mouth with yours. Give two full
breaths. The person's chest will rise if you are giving enough air.
DO NOT TOUCH VICTIM OR HIS CLOTHING BEFORE POWER IS DISCONNECTED
OR YOU CAN BECOME A SHOCK VICTIM YOURSELF
Eagle 2000 – 2kW FM Broadcasting Amplifier
User’s manual – Page 8 of 66
Step 4
Put the fingertips of your hand on the Adam's apple, slide them into the groove next
to the windpipe. Feel for a pulse. If you cannot feel a pulse or are unsure, move on to
the next step.
Step 5
Position your hands in the center of the chest between the nipples. Place one hand
on top of the other.
Step 6
Push down firmly two inches. Push on chest 15 times.
CONTINUE WITH TWO BREATHS AND 15 PUMPS UNTIL HELP ARRIVES
2.1.e Treatment for burns
• Continue treat victim for electrical shock.
• Check for points of entry and exit of current.
• Cover burned surface with a clean dressing.
• Remove all clothing from the injured area, but cut around any clothing that adheres to the skin and leave it in place. Keep the
patient covered, except the injured part, since there is a tendency to chill.
• Splint all fractures (violent muscle contractions caused by the electricity may result in fractures).
• Never permit b urned surfaces to be in contact with each other, such as: areas between the fingers or toes, the e ars and the
side of the head, the undersurface of the arm and the chest wall, the folds of the groin, and similar places.
• Transport to a medical facility.
Eagle 2000 – 2kW FM Broadcasting Amplifier
User’s manual – Page 9 of 66
2.2 Symbols used in this document
In order to allow a quick and essential reading, we used symbols which attract immediate attention, and which simply and efficiently
advise and inform the user.
, The symbol of the open hand, stresses a description of the highest importance, which concerns technical
intervention, dangerous situations, security warnings, advice and/or information of the highest importance. If such
symbol is not heeded, serious problems/consequences could arise.
The written notebook represents practical and important advice which we recommend to follow in order to obtain the best
performance possible from the equipment.
The display messages (menu, options, etc.) are written in this font (bold Courier New).
Important sentences and words are underlined
.
For ease of reference, cross references to sections, chapters, page numbers, diagrams, etc. may be indicated using the Ö s ymbol.
For example: “Ö3.1” means “refer to paragraph 3.1”
Eagle 2000 – 2kW FM Broadcasting Amplifier
User’s manual – Page 10 of 66
3 WARNINGS
3.1 Safety first!
, Before connecting or using this device, carefully read all instructions contained in this manual, in the order in which
they are written. Cross references to sections and chapters were created exclusively for ease of use. Keep this
manual in a safe place for future reference.
, IMPORTANT: Improper use or installation of this device could cause serious damage to objects and people alike.
Therefore, it is essential to rely on an installer who has been previously authorized or approved by Quark
Broadcasting, or by our local representative, and that both the user and the installer read the entire manual before
carrying out any operation.
, All warnings included in this manual must be strictly followed to avoid damages to both the device and the operator.
Read and follow all instructions indicated on warning labels or affixed to the device and its accessories.
, The equipment weighs about 15 kg and should therefore be moved or carried exclusively with the proper equipment
and the due caution.
, Do not turn the equipment on without having duly wired and connected it, as explained in chapter 6.
, Always follow the laws and regulations stipulated regarding the use of broadcast transmitters, as in effect in the
geographical area in which you are operating.
, The amplifier output power must be exclusively adjusted through the amplifier menu and NOT through any other way,
such as the driving power. If this rule is not followed the equipment could get damaged. In case of specific needs,
please contact Quark.
, As the equipment software is regularly updated, some of the screenshots or menus described in this manual might be
slightly different than those will actually appear on your device. In case of doubts, promptly contact Quark.
Eagle 2000 – 2kW FM Broadcasting Amplifier
User’s manual – Page 11 of 66
4 PARTS DESCRIPTION
4.1 Front view
Please see the following images to spot and identify the equipment parts and gain confidence with them:
[1] ON/STAND-BY button – allows switching the equipment between the operating (ON) condition and the stand-by one. T o get
the command working, keep this button pressed for at least two seconds.
[2] Control panel – allows the user to set device functions, and to view and set operating parameters. For further details Ö
4.2.
[3] Front ventilation grid – allows the device to draw in the cooling air into the equipment.
[4] Front handles – they allow the user to easily carry the device.
[5] R.F. monitor output – BNC-type connector for sourcing the low level RF signal; this function is useful for connecting to
external measurement units. The signal attenuation is 50 dB.
RF MONITOR output does not guarantee an output level that is perfectly constant versus frequency. As such, it cannot be used
for precision spectrum measurements.
4.2 Control panel
The control panel commands are the followings:
[6] LCD (Liquid Crystal Display) – this display, composed of 4 lines of 20 characters, shows the operation parameters and
functions selected through the multifunction knob.
[7] Multifunction knob (digital encoder) – it allows the user to navigate through the command menu in various ways.
• If turned – selects the various functions/operations for the device, or the parameter values to be set
• If pressed (for a short time like a button) when inside the menu, it activates the currently selecte d opti on
6
7
8
10
9
4
5
ON/STAND-BY
1 3 2
4
Eagle 2000 – 2kW FM Broadcasting Amplifier
User’s manual – Page 12 of 66
For further information regarding the use of the multifunction knob Ö 8.1
[8] ON LED - this LED glows green when the equipment is in normal operation.
[9] STAND-BY LED - this LED glows yellow when the equipment is in stand-by mode. In this condition, the amplifier can’t
temporarily deliver output power until it’s reverted back into operation mode through the ON/STAND-BY button [1].
[10] ALARM LED - this LED glows red if an alarm event occurs.
The combination of these 3 LEDs can also show if an alarm has been issued. For further information please refer to par. 12.1.
4.3 Rear view
[11] R.F. OUTPUT 50 OHM – an FM broadcasting suitable antenna able to bear the amplifier rated power must be connected to this
7/16 flange.
Instead of the 7/16 flange, the amplifier can be supplied, on demand, with a 7/8 connector.
[12] R.F. IN – a 25 to 30 W rated exciter must be connected to this N-type connector.
The equipment can be supplied with an optional N-N cable to connect the amplifi er to the exciter.
[13] Exhaust cooling air outlet – the exhaust cooling air which came into the equipment through the front ventilation grid, used to
cool the power supply unit, exits from this outlet.
[14] POWER ON/OFF – it enables to switch on/off the main power supply.
After the first switch on, when installing the amplifier, this switch has to be used only for maintenance purposes. The standar d
way to switch on/off Eagle 2000 is via the ON/STAND-BY button
[1] located on the front side.
[15] 230V
AC
– the amplifier comes with a 3 x 2.5 mm2 - 2 meters length power supply cable.
[16] REMOTE I/O – in the next version of Eagle 2000, this DB25 connector will enable the remote control option.
[17] GROUND – it allows the connection of the equipment to ground for a safe operation.
[18] Exhaust air ventilation outlet – the exhaust cooling air which came into the equipment through the front ventilation grid, used
to cool the RF section heatsink, exits from this outlet.
12
13
14
15
18
RF OUTPUT 50 OHM
RF IN
GROUND
17
POWER
ON/OFF
REMOTE I/O
16
230Vac
11
Eagle 2000 – 2kW FM Broadcasting Amplifier
User’s manual – Page 13 of 66
4.4 Internal top view - main parts location
[19] Digital encoder – multifunction knob (Ö
5.7).
[20] Display board (Ö
5.6).
[21] Analog board (Ö
5.4).
[22] Control (CPU) board (Ö
5.3) - installed underneath the analog board.
[23] Fans control board (Ö
5.5).
[24] Main power supply switch and AC power supply relay.
[25] Power Supply unit (Ö
5.1).
[26] Amplifier section / 3-ways Wilkinson splitter.
[27] Amplifier section / 800W power modules.
[28] Amplifier section / 3-ways Wilkinson combiner.
[29] Amplifier section / Low-pass filter.
[30] Amplifier section / Directional couplers.
19
20
23
25
29
30
28
27
26
Front side
Rear side
24
21/22
Eagle 2000 – 2kW FM Broadcasting Amplifier
User’s manual – Page 14 of 66
5 CIRCUITS DESCRIPTION
, This section’s sole purpose is to provide general explanations about the device operation in order to simplify the
maintenance by skilled personnel appointed by Quark. As already mentioned, no internal adjustments are required for
normal operation. Tampering with the internal settings makes the warranty null and void. Moreover, could seriously
damage the equipment, compromising the guaranteed performance.
, Several modules are highly specialized and difficult to repair even by skilled technicians and must therefore be
replaced with new modules, and, if possible, sent to the manufacturer in order to verify the possibility of a repair.
, Any inspection of the described modules must be carried out with the cover removed and, in many cases, with the
equipment connected to the power line. Although some live parts are insulated and difficult to reach, this involves the
risk of accidental contact with the power line voltage. In order to avoid this, use only insulated tools and never touch
the main power supply switch or the power sockets when the equipment is connected to the power line.
, Do not operate the equipment without the covers properly screwed on. If the top cover is removed, malfunctioning of
the equipment may occur, as well as of any other electronic measuring instrument, owing to the strong R.F. fields
involved.
Eagle 2000 is composed of the following elements:
• Power supply unit
• R.F. amplifier section
• Control board
• Analog board
• Fans control board
• LCD display and control panel button board
• Digital encoder
5.1 Power supply unit
The Power supply unit is an αPower AC/DC converter (3kW and 48VDC rating) with PFC (power factor correction) with output
voltage adjustable from 0 to 30V
DC
. This supply voltage is adjusted according to a 0-12V command sig nal sent by the analog bo ard
via a flat cable. The unit produces two supply voltages: a 30-48 VDC to supply the R.F. amplifier unit, and a 15VDC to supply the
service boards (excluding the control board which is powered by the 48 VDC).
5.1.a Power supply unit connections and indications
[31] Mains voltage - coming from the power supply relay.
[32] Power Supply status LEDs.
31
32
Eagle 2000 – 2kW FM Broadcasting Amplifier
User’s manual – Page 15 of 66
5.1.b Main power supply switch and power supply relay
The main power supply switch triggers a power supply relay rated for th e supply current required by the equipment. The power
supply unit is connected to this relay.
5.2 R.F. amplifier section
The first element of this section is a 3-ways Wilkinson splitter [26] which splits the R.F. input power (30W) into three 10W outputs.
These signals are the inputs of three 800W amplifier modules
[27]. The outputs of the three amplifier modules are fed to a 3-ways
Wilkinson combiner
[28] which combines the three signals into o ne (this circuit includes also three unb alancing and load resistors).
The coupler output is connected to a low-pass filter
[29], which delivers the signal to the antenna output flange. In this part of the
amplifier section also includes the directional couplers
[30], which extracts the direct and reflected powers and the low-level R.F.
signals (connected to the R.F. Monitor output connector located on the front panel).
The RF input signal must be between 25 and 30W. This value doesn’t affect the output power level, becaus e the amplifier’s
output power adjustment isn’t obtained by changing the input level (from the exciter), but adjusting the amplifier’s section gain
by means of the proper menu. This solution which guarantees a constant high efficiency, even when the user decides to set an
output power which is lower than the rated one.
Even if Eagle 2000 is able to output a (max) 2400W output power (thanks to the use of the 3x800W amplifier mod ules), it has a
rated output power of 2000W, a solution allowing a better reliability
.
5.2.a Connections of the R.F. amplifier section
[33] R.F. output signal.
[34] R.F. input signal.
[35] 48V
DC
power supply – for the 800W amplifier module #3.
[36] 48VDC power supply – for the 800W amplifier module #2.
[37] Analog data bus - 10 pole flat cable used to send to the control board the information related to: direct power, reflected power,
bias, temperature, input power.
[38] 48VDC power supply – for the 800W amplifier module #1.
33
35
36
38
37
34
Eagle 2000 – 2kW FM Broadcasting Amplifier
User’s manual – Page 16 of 66
5.3 Control (CPU) board
The control board, located just behind the analog board, stores the software which manages the equipment. Moreover, the built in
memory stores the programs used in all models of the Eagle series (please see the bottom note). This board is connected to the
various part of the system, thus allowing the CPU to control the equipment operation b y sending the appropriate commands or,
conversely, to get the data concerning the current functioning and process (e.g. possible alarms). The CPU is also connected to the
LCD display board and to the digital encoder.
This control board can be used as “universal” spare part for all the Eagle models because it stores the programs for all of them.
If there is an equipment with such board broken, you can easily replace it just by setting the right model with the Set
Function,Size menu (Ö 10).
5.3.a Control board connections and commands
[39] Data bus with the 4x20 display – 10 pole connector.
[40] On/stand-by secondary switch.
[41] On/stand-by command – connection with the ON/STAND-BY button located on the front panel.
[42] Data bus between the CPU board and the Analog board.
[43] Data bus between the CPU and the digital encoder (multifunction knob on the front panel).
[44] JTAG for programming purposes.
[45] Not used.
[46] Backup battery – only for the clock circuits.
[47] CPU reset button.
[48] Data bus between the CPU board and the LEDs board.
[49] RS232 port – not active.
39
43
44
45
49
40
48
42
41
47
46
Eagle 2000 – 2kW FM Broadcasting Amplifier
User’s manual – Page 17 of 66
A
nalog board
RV1
Reflected Power reading adjustment
RV2
Direct Power reading adjustment
RV3
Max Output Power adjustment
5.4 Analog board
This board manages all the equipment protections via the output power loop control an d the reflected power loop control. On the
board there are two trimmers to adjust the direct (RV2) and reflected (RV1) powers shown on the display (e.g. in the working page,
Ö
9.2), and a third trimmer (RV3) for the adjustment of the maximum output power level (see the following paragraph for information
on how to locate and adjust these trimmers). If there is the need to reduce the amplifier gain, to maintain a n high efficiency, this
board regulates the output power gain loop adjusting, first of all, th e MOSFET Drain-Source voltage (the voltage can be regulated
from 48 down to 30V). If this isn’t sufficient, then the BIAS voltage is be also reduced (please see the bottom note).
As soon as the equipment is powered, the fans will start turning at the mini mum speed. Then, the control board will change
their speed according to the heatsink temperature (i.e. the environmental one).
5.4.a Adjustment of the maximum output Power level
With the equipment working, increase the level of the input R.F. driving
power until the output one reaches 2400W (measured with a hi-precision
power meter). Now with RV3 adjust the output power level until the
measurement instrument reading is 2000W.
, Do not exceed 30W as maximum driving input power!
5.4.b Adjustment of direct and reflected power levels readings
With the equipment in normal operation (ON mode), and the display
showing the working page (Ö
9.1), check with an hi-precision R.F. power-
meter that the output power is 2000W, then adjust RV2 until the display
shows the same direct power reading. Check the reflected power level
with an hi-precision directional power meter, then adjust the reflected
power level reading accordingly using RV1.
5.4.c Analog board connections
[50] Exciter enabling/disabling command output – this signal (relay contacts) is sent to a connector (if present) located on the
rear panel.
52
51
50
55
56
57
58
59
60
53 54
61
Eagle 2000 – 2kW FM Broadcasting Amplifier
User’s manual – Page 18 of 66
[51] 48V
DC
power supply for the 800W amplifier module #3 – the (black) power resistor is used for the current measurement.
[52] 48VDC power supply for the 800W amplifier module #2 – the (black) power resistor is used for the current measurement.
[53] External stand-by input command – coming (if present) from the rear panel. A short-circuit between the two contacts sets the
Eagle2000 in stand-by mode.
[54] Telemetry data bus – connected with the REMOTE I/O port (if present) located on the rear panel.
[55] Ground.
[56] 15VDC power supply – from aux power supply.
[57] Data bus with the Power Supply unit.
[58] 48V
DC
power supply for the 800W amplifier module #1 – the (black) power resistor is used for the current measurement.
[59] Data bus between the analog board and the CPU board.
[60] Primary junction for the 48 V
DC
power supply.
[61] Power supply for the fan control board.
5.5 Fans control board
This board features two separated power supply outputs: a power supply for the t wo fans cooling the heatsink and another one f or
the fan of the power supply unit. The rated power supply is 24 VDC, this is why only this service board is powered at 48VDC. This
board gets information directly from the R.F. amplifier section via a flat cable.
To assure the maximum reliability, the equipment has been designed to allow the fans operation even if this board is broken
(in this case event the fans will turn at the maximum speed in order to assure the maximum safety).
5.5.a Fans control board connections
[62] 48V
DC
power supply input.
[63] Power supply output for the power supply unit fan.
[64] Power supply outputs for the fans cooling R.F. amplifier heatsink.
[65] Data bus from the R.F. amplifier unit – this flat cable sends data referred to the operation of the R.F. amplifier unit. This bus
is common both for the fans control board and the analog board.
5.6 LCD display and control panel board
This board integrates the LCD display [6], various LEDs and the ON/STAND-BY button [1] (for further details Ö 4.2). By
communicating directly with the CPU, the LCD display keeps the us er inform ed with vario us information and messa ges (e.g. menus,
alarms etc.).
65
62
63
64
Eagle 2000 – 2kW FM Broadcasting Amplifier
User’s manual – Page 19 of 66
5.7 Digital encoder (multifunction knob)
This board is located in the back of the front panel near the ON/STAND-BY button [1] and the Analog board (Ö 5.4). It holds the
rotary digital encoder, directly connected to the multifunction knob
[7]. The board communicates directly with the Control (CPU)
board (Ö
5.3), which detects the user commands: clockwise rotations, counterclockwise ones, as well as pushbutton operations.
The proper operation of the digital encoder is detected by the Control (CPU) board and checke d by the dedicated menu (Ö 9.5.c).
Encoder
A
nalog board
ON/STAND-BY button
Front panel
Eagle 2000 – 2kW FM Broadcasting Amplifier
User’s manual – Page 20 of 66
6 INSTALLATION
, Warning: to ensure safe functioning of the equipment, it’s absolutely mandatory to comply with the instructions of the
present chapter.
6.1 Checking the supplied parts
Before using your amplifier, make sure that the following parts are included in the packing:
• The amplifier
• The user’s manual (this manual)
As an option (to be supplied on demand) there would be a RG58 N-N cable, 1 meter length, to connect the amp lifier to the exciter.
In case some parts are damaged or missing, promptly contact your supplier.
6.2 General safety rules
, Warning: in order to prevent serious damages to objects and people, the following rules must be strictly followed.
• Although in most cases no special instruments are required, the equipment must be installed by skilled person nel only. To
make best use of the equipment and prevent damage to the unit, compliance with the instructi ons of the present manual is
mandatory. Should doubts or technical problems arise during the installation procedure, you are strongly recommended to
contact Quark or a local appointed agent/dealer.
• Should you encounter any technic al problems or be in any doubts about the installation procedure, Quark will be happy to
provide its qualified technical support service. We strongly recommend that no interventions must be c arried out by personnel
not authorized by Quark.
• As a rule, the user should not have access to the inner parts of the equipment. Tampering with the factory settings makes our
warranty null and void and might also affect the equipment performance, causing expensive damages.
• No adjustments or internal settings are required for normal operations. The equipment shall be properly earthed and be
operated with all the covers closed to prevent electrical hazards and fully comply with EC, EMI and all local safety
requirements.
• Never touch the inner parts of the equipment without first disconnecting it from the AC power line. Dangerous AC, DC and
radio-frequency voltages are available inside and become accessible when the covers are removed.
6.3 Placing the equipment
6.3.a Choosing the proper room and location
• Install the equipment in a dry, sheltered but well-ventilated room away from dust, moisture, ins ects, rodents and vermin (e.g.
mice).
• Room siz e shall be such that the equipment can be placed in an upright position an d that the technical personnel can easily
carry out routine or extraordinary maintenance.
• Place the equipment as close as possible to the antenna in order to prevent excessive power loss in the cables. If this is not
feasible, use antenna low-loss cables of suitable cross-section.
• Vents in the walls and any other openings shall be fitted with metal grids to keep rodents and insects ou t and with a dust filter.
Make absolutely sure that no water could penetrate through the vents or the air e xhaust duct or the antenna-cable grommet,
and that the floor cannot be flooded during heavy rainfall.
6.3.b Environmental Conditions
• In order to achieve the best possible performance in terms of power, life span, etc., the ideal room temperature should range
between -10°C and + 45°C. The pre-set over-temperature alarm will work when the limit of 45°C is exceeded. It is advisable to
install in the room a min-max thermometer to display any variation.
• The room must be ventilated to ensure that the temperature never exceeds 45°C. Such conditions CANNOT be gene rally met
when the exhaust cooling air is not pushed outside and is instea d fed back into the room. This is even truer if more than one
unit is installed in the same location. An efficient ventilation system is thus required in the room. Air exchange in the room shall
have a minimum flow-rate of 500 meters per hour or more.
• As a rule, if the eq uipment is fitted in a rack, the rear cover cannot be secured. If it is required t hat the equipment be totally
enclosed, a forced ventilation and air extraction system must be provided. In order to assist the air flo w an exhaust ventilation
system with a flange must be connected to a hot air exhaust duct communicating with the e xterior. In this case, bear in mind
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