ITB ARCHIMEDE 5000 Series User manual

ITALAB COMMUNICATIONS Via Casale 3/a - 20144 Milano- Italy
Tel. [phone] –email: [email protected] –www.italab.it
ARCHIMEDE
5000 Series
High Power FM Amplifier
MAIN MENU
TURN AND PUSH TO SELECT
START STOPALARM STAND BY ON
ARCHIMEDE 5000
MADE IN EUROPE
DESIGN BY LAURA M ICA LIZZI
RFP VHF FM POWER AMPLIFIER
Ultra-compact High Power FM Amplifiers
User’s Manual
Revision 1.0

Archimede 5000 series- FM Power Amplifiers
User’s manual –Page 2 of 65
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.
Italab, 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.Italab.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
Italab’s prior written authorization.
ITALAB
Via Casale 3/a
20144 - Milano Italy
Phone: [phone]
e-mail: [e-mail]
Web site: www.italab.it
Italab Communications. hereby declares that the object of this manual complies with the requirements specified in the 1999/05/EC directive.

Archimede 5000 series- FM Power Amplifiers
User’s manual –Page 3 of 65
Contents
1INTRODUCTION.........................................................................................................................5
2GENERAL 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
3WARNINGS.............................................................................................................................10
3.1 Safety first! .................................................................................................................................10
4MODEL IDENTIFICATION ..........................................................................................................11
5PARTS DESCRIPTION ..............................................................................................................12
5.1 Front view...................................................................................................................................12
5.1.a Control panel ....................................................................................................................................13
5.2 Rear view...................................................................................................................................14
5.2.a REMOTE connector..........................................................................................................................16
5.3 Internal top view - main parts location........................................................................................17
5.4 Internal bottom view (R.F. amplifier section) - main parts location.............................................18
6CIRCUITS DESCRIPTION...........................................................................................................19
6.1 Power supply section .................................................................................................................19
6.1.a Power supply unit connections and indications................................................................................20
6.2 Analog & controls board.............................................................................................................20
6.2.a Adjustment of the maximum output Power level...............................................................................20
6.2.b Analog board connections ................................................................................................................21
6.3 Fans control board .....................................................................................................................21
6.4 R.F. amplifier section..................................................................................................................22
6.4.a Driver amplifier..................................................................................................................................22
6.4.b Amplifier circuits................................................................................................................................23
6.4.c Protection fuses for the amplifier modules........................................................................................24
6.4.d Input/Direct/Reflected power levels readings adjustment circuit ......................................................25
6.4.e Extraction of direct/reflected power levels and low-level R.F. signal................................................26
6.5 LCD display board......................................................................................................................26
6.6 Digital encoder (multifunction knob)...........................................................................................26
7INSTALLATION........................................................................................................................27
7.1 Checking the supplied parts.......................................................................................................27
7.2 General safety rules...................................................................................................................27
7.3 Placing the equipment................................................................................................................27
7.3.a Choosing the proper room and location............................................................................................27
7.3.b Environmental Conditions.................................................................................................................27
7.3.c Electrical conditions..........................................................................................................................28
7.4 Connecting the equipment .........................................................................................................28
7.4.a Connecting the antenna....................................................................................................................28
7.4.b Connecting the AC power line..........................................................................................................28
7.4.c Connection of the Archimede 4000 or Archimede 5000 power supply cable...................................29
7.4.d Connecting to the exciter..................................................................................................................29
8BASIC OPERATIONS................................................................................................................30
8.1 Turning on/turning off.................................................................................................................30
8.1.a First switching on (during installation)...............................................................................................30
8.1.b Adjusting the output power ...............................................................................................................30
8.1.c Setting the display language.............................................................................................................31
8.1.d Setting date and time........................................................................................................................31
8.1.e Turning off.........................................................................................................................................33

Archimede 5000 series- FM Power Amplifiers
User’s manual –Page 4 of 65
9USE OF THE MENUS ................................................................................................................34
9.1 Use of the multifunction knob.....................................................................................................34
9.2 Navigating the menu ..................................................................................................................34
9.3 Confirming/quitting the settings..................................................................................................35
10 MENU DESCRIPTION................................................................................................................36
10.1 Startup page...............................................................................................................................36
10.2 Working Page.............................................................................................................................36
10.3 Main menu .................................................................................................................................36
10.4 Set Power Output menu.............................................................................................................37
10.5 Debug Page menu .....................................................................................................................37
10.5.a Analog Inputs menu..........................................................................................................................37
10.5.b Logic Inputs menu ............................................................................................................................38
10.5.c Encoder Test menu ..........................................................................................................................39
10.6 Language menu .........................................................................................................................39
10.7 Set Function, Size menu............................................................................................................39
10.8 Set LCD Contrast menu .............................................................................................................39
10.9 Set Clock menu..........................................................................................................................40
10.10 Info Page menu..........................................................................................................................40
11 SET FUNCTION,SIZE MENU .....................................................................................................41
11.1 Program page menu...................................................................................................................41
11.1.a Function menu..................................................................................................................................42
11.1.b Power size menu..............................................................................................................................42
11.1.c Show Timers menu...........................................................................................................................43
11.1.d Set power saver menu......................................................................................................................43
11.1.e Set a new password menu ...............................................................................................................44
12 MAINTENANCE AND WARRANTY...............................................................................................46
12.1 Maintenance...............................................................................................................................46
12.1.a Clogging by dust...............................................................................................................................46
12.1.b Cooling fans......................................................................................................................................46
12.1.c Periodic overhaul..............................................................................................................................46
12.2 Warranty.....................................................................................................................................46
13 TROUBLESHOOTING AND ALARMS ...........................................................................................47
13.1 Types of alarms and relevant LED information ..........................................................................47
14 TECHNICAL FEATURES............................................................................................................48
15 INDEX ....................................................................................................................................49
16 ELECTRICAL,MECHANICAL DIAGRAMS AND PARTS LOCATION...................................................51
17 .................................................................................. ERRORE.IL SEGNALIBRO NON È DEFINITO.

Archimede 5000 series- FM Power Amplifiers
User’s manual –Page 5 of 65
1INTRODUCTION
Congratulations for your choice! Archimede High Power is a series of new-concept FM solid state (MOS-FET) amplifiers, available
in three different models according to their rated output power (Archimede 3000 3kW - Archimede 4000 4kW –Archimede
5000 5kW).
These systems are so compact they can be entirely fitted into a 19" 2 units rack 500 mm depth, making them the ideal solutions for
medium and high power repeaters in unattended stations, in N+1 systems and also as spare amplifiers. These are only some of the
state-of-the-art features that make the Archimede High Power series truly unique:
Ultra compact size and reduced weight. (Archimede 3000/4000:28kg, Archimede 5000:35kg).
Thoroughly modular construction. The R.F. amplifier is composed of ultra - compact new-generation internal modules (their
number depends on the model). Such modules can be easily identified and inspected.
High reliability. Thanks to the internal balance circuits, in case one of the internal modules fails, the other modules left are
automatically re-balanced, thus to continuing the operation at reduced power.
Better reliability. Per each model the rated output power is reached at nearly the 80% of the maximum output power the
equipment could generate.
Low operation costs. The special care taken in the design, aimed at minimizing internal losses, allows a very high electrical
efficiency to be achieved thus minimizing power consumption and 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 easily set 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 adjusts 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 equipment is able to automatically 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
the control panel. Thanks to the optional external telemetry system, parameters and alarms are easily accessible from remote
posts through the relevant remote control input.
Compliance with the strictest norms. These equipments were designed in compliance with the tightest international norms,
as well as the recent, strict anti-magnetic noise EC requirements. Besides, the equipments comply 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 the technical features of the Falcon High Power models 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.

Archimede 5000 series- FM Power Amplifiers
User’s manual –Page 6 of 65
2GENERAL 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. Italab ( ITB ) equipments should be operated and maintained by fully qualified personnel.
Do not service alone and do not perform internal adjustments of these units unless another 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-ground
connection by way of the grounding conductor in the power cord is essential for safe operation.
According to the model, these units have to be grounded through the contact (GND) located on the rear panel or via 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 operate 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.
Italab Communications SHALL NOT BE responsible for injury or damage resulted from improper procedures
or from using it by improperly trained or inexperienced personnel.

Archimede 5000 series- FM Power Amplifiers
User’s manual –Page 7 of 65
2.1.b Good practices
In maintaining the equipment covered in this manual, please keep in mind the following, standard good 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 soldering.
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 material (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 teeth
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

Archimede 5000 series- FM Power Amplifiers
User’s manual –Page 8 of 65
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 burned surfaces to be in contact with each other, such as: areas between the fingers or toes, the ears 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.

Archimede 5000 series- FM Power Amplifiers
User’s manual –Page 9 of 65
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 (LCD pages, 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 symbol.
For example: “Par.3.1” means “refer to paragraph 3.1”

Archimede 5000 series- FM Power Amplifiers
User’s manual –Page 10 of 65
3WARNINGS
3.1 Safety first!
Before connecting or using these devices, 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 these devices 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 ItalabBroadcasting,
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.
According to the model, the equipment can weighs up to about 35kg 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 7.
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 Italab.
As the equipment software is regularly updated, some of the screenshots or commands described in this manual
might be slightly different than those will actually appear on your device. In case of doubts, promptly contact Italab.
Warning! When connecting the Archimede 5000 or Archimede 4000 to the power line please read carefully the
paragraph 7.4.c “Connection of the Archimede 4000 or Archimede 5000 power supply cable” to avoid damages to
equipment and people.

Archimede 5000 series- FM Power Amplifiers
User’s manual –Page 11 of 65
4MODEL IDENTIFICATION
The features of the Archimede High Power series FM amplifiers (such as the commands on the front panel) are common to all
models. Nevertheless each one of them differs in the output power and other standard or optional specs that make it unique. This is
why it’s mandatory checking the exact model of the equipment in use.
There are several ways to recognize the model of your equipment. The following table resumes the differences between Archimede
3000, Archimede 4000 and Archimede 5000:
Ref.
Archimede
3000
Archimede
4000
Archimede
5000
Notes
Model name on the front panel
“Archimede
3000”
“Archimede
4000”
“Archimede
5000”
Par. 5.1, part # [1]
Label on the rear panel
“Archimede
3000”
“Archimede
4000”
“Archimede
5000”
R.F. Output connector
7/16 flange*
7/8 flange
Par. 5.2, part # [17]
Number of fans on the rear side
2
3
Par. 5.2, part # [17]
Number of power supply units
2**
3
Par. 5.3, parts # [25] and [26]
R.F. splitter (Wilkinson type)
3-ways
4-ways
Par. 5.4, part # [30]
R.F. amplifier modules number and power
3 x 1.300W
4 x 1.300W
4 x 1.500W
Par. 5.4, parts # [31], [32], [33], [34]
R.F. combiner (Wilkinson type)
3-ways
4-ways
Par. 5.4, part # [35]
Number of fuses protecting the amplifier
modules
6
8
Par. 5.4, parts # [39], [40] and Par.6.4.c
* 7/8 rigid line flange can be required as optional
** Archimede 3000 can be optionally supplied for a three-phase power supply (Par. 6.1). In this case the equipment mounts three
power supply units (for the installation see the information given in paragraph 7.4.c).
In order to avoid misunderstandings of the operating instructions, it’s very important to verify the exact model of the
equipment and keep it in mind.

Archimede 5000 series- FM Power Amplifiers
User’s manual –Page 12 of 65
5PARTS DESCRIPTION
If not otherwise specified, the following descriptions are valid for all Archimede High Power models.
5.1 Front view
Please see the following images to spot and identify the equipment parts and get familiar with them:
MAIN MENU
TURN AND PUSH TO SELECT
START STOPALARM STAND BY ON
ARCHIMEDE 5000
MADE IN EUROPE
DESIGN BY LAURA M ICA LI ZZI
RFP VHF FM POWER AMPLIFIER
5 53 32 4
6
1
[1] Model –This label quotes the model of the equipment (e.g.: the image refers to Archimede 5000).
[2] RF MONITOR ( Option ) –SMA - type connector for sourcing the low level RF signal. This function is useful for measurements
with external instruments. 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 accurate spectrum measurements.
[3] Control panel –allows the user to set device functions, and to view and set operating parameters. For further details 5.1.a.
[4] Front ventilation grid –allows the device to draw in the cooling air into the equipment.
[5] Front handles –allow the user to easily carry the device.
[6] ON/STAND-BY button –allows switching the equipment between the operating (ON) condition and the stand-by one. To get
the command working, keep this button pressed for at least two seconds.
.

Archimede 5000 series- FM Power Amplifiers
User’s manual –Page 13 of 65
5.1.a Control panel
The control panel commands are the followings:
START STOPALARM STAND BY ON
ARCHIMEDE 5000VHF FM POWER AMPLIFIER
MAIN MENU
8 7
910
11
[7] LCD (Liquid Crystal Display) –this display, composed of 4 lines of 20 characters, shows the operation parameters and
functions selected through the multifunction knob.
[8] 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 selected option.
For further information regarding the use of the multifunction knob 9.1.
[9] ON LED - this LED glows green when the equipment is in normal operation.
[10] 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 [6].
[11] 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. 13.1.

Archimede 5000 series- FM Power Amplifiers
User’s manual –Page 14 of 65
5.2 Rear view
Archimede 3000 and Archimede 4000 rear view (standard version, for the connection to a single-phase 230VAC power line):
12 15 16
1413
20 19 18 17
12
GND
Archimede 5000 rear view:
19 21 18
121212
14
17
I T B
[12] Exhaust cooling air outlet –the exhaust cooling air which came into the equipment through the front ventilation grid exits from
this outlet
[13] RS 232 connector –optional, for the connection to an external modem. Only with Archimede 3000 and 4000.
[14] REMOTE –DB25 female connector, used when the amplifier is equipped with the optional Telemetry board.
[15] GND (ground) –It allows the connection of the equipment to ground for a safe operation.

Archimede 5000 series- FM Power Amplifiers
User’s manual –Page 15 of 65
When installing Archimede 5000 or Archimede 4000 models make sure to earth the equipment through the ground
wire of the power supply cable (7.4.c).
[16] Power Supply cable –Archimede 3000 standard model can be connected to a single-phase 230VAC power line. Archimede
4000 can be connected to a single-phase 230VAC, to a three-phase 220VAC or to a three-phase with neutral wire 400VAC power
line.
For details about the Archimede 4000 power supply connections 7.4.c
On demand, Archimede 3000 can be supplied for the connection to a three-phase with neutral wire 400VAC power line
[17] RF OUT (50 OHM) –an FM broadcasting suitable antenna able to bear the amplifier rated power must be connected to this
flange.
Archimede 3000 is default supplied with a 7/16 connector. On demand, it can be supplied with a 7/8 flange.
Archimede 4000 and Archimede 5000 are default supplied with a 7/8 flange complete with a 7/8 rigid line flange. This is a
quite useful solution when carrying out maintenance operations (e.g.: fans maintenance), because it’s not necessary to
unsolder the 7/8 rigid line connector, being sufficient to loosen a clip to get the equipment free and removable from the rack
(clearly after having removed all the other connections).
[18] Power ON/ OFF –it enables to switch on/off the equipment (main power supply).
[19] RF IN –The exciter must be connected to this N type connector.
Do not exceed the maximum driving input power levels given in the following table:
Maximum Driving Input Power levels
Archimede
3000
Archimede
4000
Archimede
5000
35W
50W
60W
[20] INTERLOCK AUX –when installing Archimede 3000 or Archimede 4000 connect the power supply input of the exciter to this
VDE female connector.
This solution acts as an interlock command managed by the amplifier control board which can decide, in case of an active
critical alarm, to switch off the exciter.
[21] Power supply cable –Archimede 5000 comes with a 7 x 1.5 mm2(six poles + neutral wire) power supply cable, about 2
meters long.
Archimede 5000 can be connected to a single-phase 230VAC, to a three-phase 220VAC or to a three-phase with neutral wire
400VAC power line.
For details about the Archimede 5000 power supply connections 7.4.c.

Archimede 5000 series- FM Power Amplifiers
User’s manual –Page 16 of 65
5.2.a REMOTE connector
The REMOTE connector [14] gathers mainly information about the equipment status (alarms status and internally carried measures).
The following table describes these I/O signals:
Pin
Signal
Description/Notes
1
-
(not connected)
2
High reflected power alarm
If this status is reached, the output on this pin is +12VDC.
3
-
(not connected)
4
Direct power measure
Range from 0 to 2VDC (full range).
5
Reflected power measure
Range from 0 to 2VDC (full range).
6
Low direct power alarm
If this status is reached, the output on this pin is +12VDC.
7
Not connected
(not connected)
8
DC power supply
External 12 VDC for service purposes (20mA Max)
9
-
(not connected)
10
Stand by
To set the equipment in stand by mode connect this pin to pin 8 or to an external +12VDC.
11
Power adjustment input command
Range from 0 to 4VDC (from 0W up to full output power).
12
Temperature alarm
If this status is reached, the output on this pin is +8VDC.
13
-
(not connected)
14
-
(not connected)
15
-
(not connected)
16
-
-
17
-
-
18
-
-
19
-
-
20
-
-
21
-
-
22
-
-
23
-
-
24
-
-
25
-
-

Archimede 5000 series- FM Power Amplifiers
User’s manual –Page 17 of 65
5.3 Internal top view - main parts location.
[22] ON/OFF power switch
[23] Fans control board (Par.6.3).
[24] Analog & controls board (Par.6.2).
[25] Power supply board –standard with all models (Par.6.1).
[26] Power supply board –This space is fitted with a third power supply unit with Archimede 4000 standard version or with
Archimede 3000 mounting the three-phase with neutral wire 400VAC power supply option (Par.6.1).
[27] LCD display board (Par.6.5)
[28] Digital encoder –multifunction knob (Par.6.6)
Front side
Rear side
22
24
23
25
25
25
Front side
Rear side
22
24
25
25
26
Archimede 3000/4000
Archimede 5000
23
27
28
27
28

Archimede 5000 series- FM Power Amplifiers
User’s manual –Page 18 of 65
5.4 Internal bottom view (R.F. amplifier section) - main parts location.
If not otherwise specified, the following descriptions are valid for all Archimede High Power models.
[29] Driver amplifier (Par.6.4.a).
[30] Wilkinson type splitter (Par.6.4.b)
[31] Amplifier module # 1 (Par.6.4.b).
[32] Amplifier module # 2 (Par.6.4.b).
[33] Amplifier module # 3 (Par.6.4.b).
[34] Amplifier module # 4 –this module is present only with Archimede 4000 and Archimede 5000 (Par.6.4.b).
[35] Wilkinson type combiner (Par.6.4.b).
[36] Low-pass filter (6.4.b).
[37] Directional couplers (Par.6.4.e).
[38] Adjustment of the Input, Direct and Reflected power level readings (Par.6.4.d).
[39] Fuses –protection of the transistors mounted on the amplifier modules # 1 and 2 (Par.6.4.c).
[40] Fuses –protection of the transistors mounted on the amplifier modules # 3 and 4 (the last one module is mounted only on
Archimede 4000 and Archimede 5000) (Par.6.4.c).
Front side
Rear side
40
39
38
30
34
33
32
31
29
35
36
37

Archimede 5000 series- FM Power Amplifiers
User’s manual –Page 19 of 65
6CIRCUITS 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 Italab. 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.
The Archimede High Power models are mainly composed of the following elements:
Power supply section
Analog & controls board
Telemetry board (optional)
Fans control board
R.F. amplifier section
LCD display board
Digital encoder
If not otherwise specified, the following descriptions are valid for all Archimede High Power models.
6.1 Power supply section
According to the model and/or to the installed options, this section can be equipped with two or three power supply units (Par. 5.3,
parts # [25] and [26]). The following table resumes the number of the units per each version:
Model
Number of power supply units
Archimede 3000 standard version (single-phase 230VAC power supply)
2
Archimede 3000 with the three-phase with neutral wire 400VAC power
supply option (see note at the bottom of this table)
3
Archimede 4000 and Archimede 5000 (standard versions)
3
The third power supply unit, if mounted on Archimede 3000, is installed in the central position (  5.3, parts # [26])
For all models, the power supply units are AC/DC converters (3kW, 48VDC rating) with PFC (power factor correction) with output
voltage adjustable from 0 to 30VDC. This supply voltage is adjusted according to a 0-12V command signal sent by the analog &
controls board via a flat cable. The units produce two supply voltages: a 30-48VDC to supply the R.F. amplifier section, and a 15VDC
to supply the service boards.

Archimede 5000 series- FM Power Amplifiers
User’s manual –Page 20 of 65
Analog board
RV1
Max Output Power adjustment
6.1.a Power supply unit connections and indications
[41] Mains voltage input.
[42] Power Supply unit status LEDs.
6.2 Analog & controls board
This board (Par. 5.3, part # [24]) manages all the equipment protections (Direct, Reflected and Max output R.F. powers) via the
output power loop control and the reflected power loop control. If there is the need to reduce the amplifier gain, to maintain an high
efficiency this board regulates the output power gain loop adjusting, first of all, the MOSFET Drain-Source voltage (the voltage can
be regulated from 48 down to 30V). If this isn’t sufficient, then the BIAS voltage will be also reduced (please see the bottom note).
On the board there is a trimmer (RV1) for the adjustment of the maximum output power level (see the following paragraph for
information on how to locate and adjust this trimmer)
As soon as the equipment is powered, the fans will start turning at the minimum speed. Then, their speed changes according
also to the heatsink temperature.
This board performs all its functions (e.g.: ALC control, output power level management, reflected power max level) in analog
mode, without adopting a microprocessor. This solution guaranties faster processes, and better efficiency and confidence.
6.2.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 level reaches the 120% of the rated power (e.g.
6kW with Archimede 5000), measured with a hi-precision power meter.
Now with RV1adjust the output power level until the measurement
instrument reading is equal to the rated power (e.g. 5kW for Archimede
5000).
Do not exceed the maximum driving input power given in the
following table:
Maximum Driving Input Power levels
Archimede
3000
Archimede
4000
Archimede 5000
35W
50W
60W
42
41