ITB ARCHIMEDE 3000 User manual

Italian Technology of Broadcast
User's Manual
ARCHIMEDE 3000 AR
432
Page 1of 40
ARCHIMEDE 3000
Operating Manual
Via Casale 3/A
20144 Milano Italy
Phone: [phone]
Fax: [phone]
E-mail: [email protected]
Website: www.italab.it
ITALAB reserves the right to revise and change any and all information included in this document.
Ediz./Rev.
Data
(gg/mm/aa)
Motivo
Approvato da:
ARC3000 -A/00
20/06/2011
First Edition
M.N.
ARC3000-A/00
18/09/2014
Second Edition
M.N.

Italian Technology of Broadcast
User's Manual
ARCHIMEDE 3000 AR
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Page 2of 40
Warranty
Italab product is guaranteed against defects in materials and workmanship for a period of TWO YEARS from
date of shipment. The standard warranty may be extended beyond the two-year period. A record of warranty
extensions is listed on sales orders of each product purchased. Standard warranty conditions apply to
extended warranty period.
During warranty Italab will repair or replace product proved to be faulty prior to authorization. The warranty
validation only applies if product is returned to Italab after release of Return of Merchandise Authorization and
provided that maintenance procedures are followed as listed in the manual. Warranty does not cover repair
resulting from product carelessness, incorrect or improper use.
NO OTHER WARRANTY APPLIES
ITALAB IS NOT LIABLE FOR DAMAGES RESULTING FROM PRODUCT MISUSE
ITALAB DOES NOT GUARANTEE ERROR-FREE EQUIPMENT, UNINTERRUPTED OPERATION, FIRMWARE OR
FIRMWARE BUGS.
If your Equipment needs repairing call Italab promptly and ask for customer service department. It is important
to contact Italab immediately since many problems may be quickly solved over the phone or by e-mail. Please
have your Serial Number ready before you contact Italab and clearly explain the nature of your problem. Once
we acknowledge your Equipment needs service, we will send you an electronic form to fill in with your name,
address, phone number, e-mail and an accurate description of problem or failure. We will issue an RMA
number.
Send the unit with prepaid shipment to the indicated maintenance lab and place the Equipment in the original
box or a suitable container to protect product from damage. Italab will not be responsible for damage incurred
during shipping. Please ensure RMA number is clearly marked onto shipping container. Our standard terms are
to fix or repair Equipment within five working days. If Equipment requires parts ordering or more than five
working days, Italab technical service will contact you. We also provide service for Equipment if warranty has
expired. Please, follow the same instructions described above, but tick in the “not in warranty” box.
Warranty is valid on condition that proper maintenance procedures have been complied with, as listed in the
manual. Damage caused by product misuse is NOT covered by warranty.
Warranty Service
The ARCHIMEDE 3000 is a high reliability equipment. Nevertheless, as any equipment which works 24 hours a
day for years, some failures are possible. Because the reparation of the modules, inside the Amplifier, is very
difficult on the field, we suggest in the event of any failure to contact our service.
ITALAB Via Casale 3/A 20144 Milano Italy
Phone: [phone] - Fax: [phone]

Italian Technology of Broadcast
User's Manual
ARCHIMEDE 3000 AR
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Page 3of 40
Table of Contents
page
Warranty
2
Safety Instructions
4
System overview
6
Technical features
7
Front Panel
8
Rear panel
9
Internal overview
10
Installation to start up
11
System start up
12
System block diagram and Internal Connections
13
Circuit description
14/15
RF amplifier box
CPU board
Analog board
Led board
Lcd display
Power supply
14
14
15
15
15
15
LCD display screens
16
Power on
Start of transmission
Stop sequence
16
16
17
LCD display alarm screens
18
FWR alarm
SWR alarm
Temperature alarm
18
18
19
User Programming
20
Programming clock
Programming language
Programming name
Programming exit
21
22
23
24
Schematic drawings and BOM
25

Italian Technology of Broadcast
User's Manual
ARCHIMEDE 3000 AR
432
Page 4of 40
Safety Instructions
To maximize user safety and ensure the device to operate correctly , all instructions contained in this section
should be read carefully.
OPERATING CONDITIONS
This Equipment operates with:
AC 50÷60 Hz power source of between 190-265 V
temperature range from 0 up to 40°C.
Maximum altitude of 4000 m
ATTENTION : hazardous voltages are present inside the Equipment. ONLY AUTHORIZED AND QUALIFIED
PERSONNEL CAN REMOVE PARTS OF THE EQUIPMENT
GROUND THE AMPLIFIER
To minimize shock hazard, the Amplifier chassis must be connected to an electrical ground through the AC
power mains cable, with the third wire ( yellow green ) connected to an electrical ground (safety ground) at the
power outlet. Any interruption of the grounding conductor will cause a potential shock hazard that could result
in personal injury. If the Amplifier is powered by any other source, make sure that the chassis is connected to a
separate safety ground
DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE
Operation of the ARCHIMEDE 3000 in presence of flammable gasses or fumes can endanger persons
proximate to the site of operation.
DO NOT REPAIR THE ARCHIMEDE
Component maintenance, replacement and internal adjustments must be made only by ITB qualified service
personnel.
Fuses
In the event of fuses failure, only fuses with the same required current, voltage rating, and specified type
should be used. Do not use repaired fuses or short-circuited fuse holders.
Output Connector
The “7/16” output connector carries dangerously high RF voltages that could cause shock and burn hazards.
Never operate the Amplifier without properly connecting the output connector in either an adequately rated
load or antenna.
Electrostatic Discharge (ESD)
A sudden discharge of electrostatic electricity can destroy static-sensitive devices or micro-circuits. Proper
grounding techniques are necessary precautions to prevent damage. Always take industry-standard
precautions.

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User's Manual
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Page 5of 40
General Safety Rules
The device must be used in accordance with the instructions for use.
Electrical installations in the room must correspond to the requirements of safety regulations.
Take care that there are no cables, especially mains cables, in areas where people could move or work.
Do not use a mains connection in sockets shared by other power consumers. Do not use an extension
cable.
Only use the mains cable supplied. In the case it is not long enough, only use a cable with the same
characteristics as the one provided to assemble a longer one.
The unit is completely disconnected from the power source only when the power cord is removed from
power source. Therefore the power cord and its connectors must always remain easily accessible.
Do not set up the device in the proximity of heat sources or in a damp location.
Make sure that the device has adequate ventilation.
The Amplifier should not be used near water and objects filled with liquids should not be placed on the
appliance.
The Amplifier should be situated so that its location or position does not interfere with its proper
ventilation. For example, the device should not be placed in a built-in installation, such as a bookcase or
cabinet that may stop the flow of air through the ventilation openings.
All plugs on the connection cables must be screwed or locked to the chassis housing.
The device is designed to be used in horizontal position only.
The device is no longer safe to operate when has visible damage or it hasn’t been working for long time.
In case of technical problems or a few elements of doubt, Italab will help you with the support of
qualified technical personnel.
In case of system failure or visible damage, the device must be shut down.
Repairs may only be carried out by a person authorized by ITALAB.
The ARCHIMEDE 3000 must be switched off and the power cord disconnected from the AC source when
removing the top cover.
Climatic Conditions
In order to have the best performance in term of power, life span, etc, the following parameters must be
respected:
the room temperature should be in a range of 25° C and 30°C .
The humidity shall be less than 70% and non-condensing.
The Equipment will work beyond the parameters specified, but Italab will not guarantee the continuous service
and, in any case, with temperatures higher than 50°inside the Equipment, the standby procedure will
automatically start. The room must have a good ventilation to ensure that the inside temperature never
exceeds the limit of 40 °C. If the Equipment is included in a rack, the rear of this should not be closed. If it is
necessary to close the rear of the device, a forced ventilation and air extraction must be provided.

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User's Manual
ARCHIMEDE 3000 AR
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Page 6of 40
SYSTEM OVERVIEW
This document, ARCHIMEDE 3000 guidebook , provides instructions on how to install, start up and perform
controls on the 3000 Watt ARCHIMEDE FM Broadcast Transmitter (see photo below), an easy-to use and
versatile system used in stand-alone mode.
The information on this manual is intended for an experienced system operator with a knowledge of high-
performance broadcast transmission systems. The ARCHIMEDE 3000 is designed to fit a standard 19” rack.
ARCHIMEDE 3000 is a broadband amplifier operating from 87.5 to 108 MHz. The RF part consists of 3
amplifying units (AMP1000 - FM) that can deliver full power to 3750 watts in continuous service. However,
since the philosophy of Italab is to allow all components of a product “not to work in stressful
conditions ," the full power of work has been limited to 3000 watts at full speed, this ensures a good
reliability without stress.
The Radiofrequency part (including a pallet, a low-pass filter and the input / output directional coupler)is
inserted in a box and shielded from all other components that complement this Equipment.
The switching power supply, extremely compact and of excellent quality, is oversized for its final use.
The ARCHIMEDE 3000 is run entirely by a powerful microprocessor that in real time controls all the important
functions for an efficient work (ventilation, temperatures of the RF part, temperature of incoming and inner
air, output power and reflected power).

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User's Manual
ARCHIMEDE 3000 AR
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TECHNICAL FEATURES
Technology
• Solid state power MOSFET technology
• Master control by microprocessor with stored program
RF SPECIFICATIONS
Frequency…………………………………………………………………………………………………………….87.5 ÷ 108 MHz
Input Power…………………………………………………………………………………….…………………15-17 Watts Max
Output Power………………………………………………………………………………………..……………...0 ÷ 3000 Watts
Harmonics…………………………………………………………………………………………….…………………….≤ - 70 dBc
Output Connector…………………………………………………………………………………………………….…………7/16 “
Input Connector………………………………………………………………………………………………………….…….N type
OTHER
Voltage Input………………………………………………………………………………………………………….190 ÷ 265 Vac
Current Input………………………………………………………………………………….……………………25 A÷ & 230Vac
Protections…………………………………………………………………………….……Overload, VSWR and Temperature
Cooling………………………………………………………………………………………..…………………………….Forced Air
Working Ambient Temperature ……………………………………………………………………………………….0 ÷ +40 °C
Storage Temperature……………………………………………………………………………………...………… -10 ÷ +60 °C
Umidity……………………………………………………………………………………………………………………………..90 %
Control System……………………………………………………………………………………...2 buttons, 4x20 LCD display
Dimension…………………………………………………………………………………………………3 unity rack 19", 530mm
Weigh……………………………………………………………………………………………………………..……………….26 Kg
Box Material…………………………………………………………………………………………………...Alodyne Aluminium
The user must obtain a license before using the product in the intended country of use. Ensure respective
country licensing requirements are complied with. Limitations of use can be applied in respect of operating
frequency, transmitter power and/or channel spacing. Italab is not criminally and civilly liable for a not-legally
authorized use.

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User's Manual
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FRONT PANEL
1
RF TEST (SMA connector output signal test–60dBc ÷ 3 dB ) option
2
STOP button
Stop button
3
START button
Start button
4
Led ST.BY
Standby status led
5
Led On AIR
Power broadcast led
6
Led BLOCK
Spy Led block
7
Led TEMP
Alarm led for overheating
8
Led RF OUT
Spy Led RF out
9
Led REFL
Spy Led refl
10
DISPLAY
Operation display
DESCRIPTION
LED SWR: Blinking: indicates that the output RF power is being limited in order to reduce the
reflected power
Steady light: indicates that the reflected power is greater than 12% of the nominal power
of the Equipment
LED PWR: Blinking: indicates that the Equipment is limiting the output power in order not to exceed
the nominal power.
Steady light: indicates that the output power is greater than the nominal power
LED TEMP: Steady light: indicates that the sensors, placed inside the Equipment, detect a
temperature of the apparatus or pallet higher than the safety parameters.
LED INHIBIT: Blinking: indicates that the CPU is reducing the bias voltage to the MOSFET.
LED ON AIR: Blinking: indicates that the Amplifier is operating but there is no output signal over 15%
nominal maximum.
Steady light: indicates that the Equipment is deriving the output power
LED ST.BY: Steady light: indicates that the Amplifier is in stand-by mode.
STOP BUTTON: Pushing the button the Amplifier will go on standby mode and the output auxiliary power
supply will be suspended
START BUTTON: Pushing the button the pallet will go on operating mode and output auxiliary power
supply will be received

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User's Manual
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REAR PANEL OF EQUIPMENT
1
Hot air extraction from power supply
option
2
RF Output Connector
3
RF Input Connector
4
220 Vac control output for the transmitter ( Max 1 A. )
5
Ground connector
6
A.C. mains input 220 Volt
7
A.C. mains input 220 Volt
8
Switch disconnector
9
Extraction of hot air RF section
10
Extraction of hot air RF section

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User's Manual
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INTERNAL OVERVIEW OF EQUIPMENT
3
2
1
6
5
4
1
COLD AIR INPUT GRID
option
2
COLD AIR INPUT VANS
3
RF BOX
4
INTERFACE RF BOX
5
6
CPU
POWER SUPPLIES ( these may change from model to model)

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User's Manual
ARCHIMEDE 3000 AR
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Page 11 of 40
INSTALLATION TO THE START UP
For any questions or technical problems you may encounter during the installation phase, the ITALAB technical
staff will be at your complete disposal to solve the problem. Please do not produce any change that may
damage the Device .
Before mounting the Amplifier, check that in the room intended for the installation:
•dust is not excessive
•no deposits of harsh chemicals are present (chlorine, sulfur, etc..)
•any heat source (radiators, hot air ventilation etc.) must be at least 2 meters;
•the room temperature must not exceed the limits between 0 and +40 ° C with a relative humidity no
higher than 90% non-condensing.
After removing the Amplifier out of the packaging, verify that no damages have occurred during shipment.
Electrical connections
•The connection with main power at 230 Vac must be done through the cable shipped with the Amplifier
or with a three conductor cable and minimum conductor section 2.5 mm square.
•For safety is a good rule to have a dedicated cord of 2.5 mm square coming from main panel to wall
outlet with a proper thermal-magnetic circuit breaker.
•Check that the ON/OFF switch on the rear panel of Amplifier is on OFF position
•Plug the AC power cord into the AC power socket on the rear panel of Amplifier
•Plug the other end of the AC power cord into a wall outlet
•Connect the AC power cord of the exciter to the female wall outlet on the rear panel of Amplifier. This is
powered only when the Amplifier is in broadcasting mode.
•The max power absorption allowed is 230W/1A
RF connection
•Connect the coaxial antenna cable with impedance of 50 Ωto the RF output connector ( 7/16” ) on the
rear panel of Amplifier
•Connect the RF output of exciter to RF input connector of Amplifier with coax cable with impedance of
50 Ω
Final check for start-up procedure
Before starting the procedure check the following points for security:
That the Amplifier has the GROUND connection
That the Vac 230 with its circuit breaker is correctly connected to the Amplifier
That the AC power cord of exciter is correctly connected to the Amplifier
That the antenna cable is correctly connected at the Amplifier
That the RF cable from exciter to the Amplifier is correctly connected
Verify that the input power is not greater than 2 watts. The device will maintain constant the
output power even in the presence of a greater power input. Excessive power input will
damage the Equipment.

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SYSTEM START UP
When the power switch is turned on, some seconds are necessary before the system starts because the power
supply has a long start-up time in order to prevent overloading.
The display will then show the start-up procedure of the Amplifier and this will be ready for
transmission. With the ON AIR led blinking, slowly increase the exciter output power until you reach
the required transmission power and in any case not greater than 3000 Watts. When the display shows an
output of 150 watts, the ON AIR led stops blinking.
If the output power exceeds 3000 watts, the PWR led will blink and automatically the Mosfet bias voltage is
reduced in order to maintain the output power in the safety parameters. It is therefore useless to increase the
driving to have more power output.
By keeping on increasing the driving, you can damage the RF power Mosfet which is no covered by warranty, a
part from the warranty of the manufacturer.
Do not remove the AC power without first having performed the stop procedure , because if the Amplifier is still
connected to input power when is removed, this could damage the Equipment.
The installation of the Amplifier is now completed and the correct operation is indicated on the display showing
the following values:
•ARCHIMEDE 3000
•OUT POWER up to 3000 Watt
•REF POWER NORM.
And in the fourth line of the display will be displayed alternately:
The temperature of the pallet (MAX 85°C) and of the input air ( MAX 45°C)
Date and time
It is mandatory to provide adequate ventilation to the Equipment to maintain its internal temperature as low as
possible, in a recommended range of 5÷35° C. Even if the Equipment may work until 40°C his life expectancy
will be impaired by excessive temperature.
Vents in the walls and any other opening shall be fitted with a metal grating to keep away rodents and other
animals. Proper air filtering avoid dust and insects to be conveyed in the internal equipment causing over
temperature alarm. Make absolutely certain that the floor cannot be flooded during heavy rainfall. Even
moisture and/or dust may cause condensation build-up in the Amplifier. This can trigger destructive electric
arcs during the switch on/off system and thus cause damage that is not covered by the warranty.

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User's Manual
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Page 13 of 40
SYSTEM BLOCK DIAGRAM
INTERNAL WIRING

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CIRCUIT DESCRIPTION
1RF AMPLIFIER BOX
INHIBIT
POWER SPLITTER
IN RF
A
c
LOW PASS
FILTER AND
BIDIRECTIONAL
COUPLER
POWER COUPLER
OUT RF
SOLID STATE
AMPLIFIER
IN 48V
OUT PWR
OUT SWR
B
The RF section consists of one 3000 W (3 x AMP1000-FM)amplifier modules and the Low Pass filter to reduce
the harmonics. In the Low Pass filter output, a bidirectional coupler measures AC/DC power showing the
parameters on the display and sending the signals to the microprocessor which manages the operation and
alarm functions. The circuits are all fully planar designed to allow an immediate access and inspection to all
internal modules. All the RF part is completely screened by an Alodyne Aluminium to comply with EMI
requirements.
2CPU BOARD
MICROPROCESSOR
Analog
Board
Interface
Display
Interface
LED and
Switch Board
Interface
Relay AUX
Main Power
Temperature
Sensor
DC DC
Switching
The CPU board is the heart of the Amplifier. The board contains an ST microcontroller with internally stored the
software for management and control of the Equipment. The software can only be modified locally by qualified
technicians. The CPU is connected to all other boards by flat cables to read the status ( PWR; SWR,
Temperature, ……) and to assure the normal operation. Inside the board there are two DC/DC switching to
deliver the low voltage power from main 48V for all analogue and digital circuits.

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3ANALOG BOARD
CPU INTERFACE
Inhibit
Command
Current
Sensor
( option )
Temperature
Sensor
PWR
Sensor
SWR
Sensor
The analog board is the interface between the RF box and CPU board. This adjusts the level signal from RF box
to CPU and from CPU to RF box.
4LED BOARD
On this board are placed some led for warning alarm, status machine and two buttons mainly used to start/stop
the Equipment and as second function to read/change the Equipment parameters.
5LCD DISPLAY
The front panel LCD display allows the monitoring of the Amplifier parameters ( PWR, SWR, temperature,…)
6POWER SUPPLY
This module performs an efficient regulation of the AC input 230 Vac to a lower DC 48Vac for RF pallet and
log/analog boards. Being its efficiency very high, very little heat is produced in the regulation process.

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LCD DISPLAY SCREENS
To assure a very good vision the ARCHIMEDE uses a big display of 4 lines and includes 20 characters in each.
POWER ON
Turning on the Amplifier( placed in "stop”mode), after the setup stage, the display will show the written below.
On the fourth line of the will be displayed the Equipment data.
P
u
s
h
S
T
A
R
T
t
o
s
t
a
r
t
T
X
h
h
:
m
m
START of TRANSMISSION
After pushing the start button or turning on the Amplifier (placed on "start" ), after the setup stage, the display
will show the written
A
R
C
H
I
M
E
D
E
3
0
0
0
W
a
i
t
S
y
s
t
e
m
S
e
t
u
p
After the setup phase the display will show the written
A
R
C
H
A
I
I
M
E
D
E
3
0
0
0
O
U
T
P
O
W
E
R
.
.
.
.
W
A
T
T
R
E
F
.
P
O
W
E
R
N
O
R
M
.
R
a
d
x
x
°
C
I
n
g
x
x
°
C
On the fourth line of the display will be displayed alternately for some seconds the date and time
During the broadcast it is possible to see sequentially on the display, by pressing the start button, the
parameters of the Amplifier and the Equipment data.

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STOP SEQUENCE
During the broadcast by pressing the stop button will activate the standby procedure.
The display will show the written
at the same time will be disconnected the AC power from aux main plug located on the rear panel and the
voltage polarization on the pallet.
At the end of the standby cycle on the display will show the written
P
u
s
h
S
T
A
R
T
t
o
s
t
a
r
t
T
X
h
h
:
m
m
S
T
O
P
s
e
q
u
e
n
c
e

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LCD DISPLAY ALARM SCREENS
FORWARD ALARM (PWR)
When the “PWR”is above 105% of rated power the “PWR”led on the led board starts blinking and the CPU will
start to reduce the bias voltage of the MOSFET to bring the output power back to the nominal level. If the “PWR”
does not return within normal ranges, but will exceed the threshold of 110%, the “CPU”will begin the
standby process and the display will show the written
A
l
a
r
m
P
W
R
l
i
m
i
t
a
t
i
o
n
After some seconds the “CPU”will restart the start up sequence. If at the end of the sequence the “PWR”is
inside the limit the transmission will continue ,otherwise it will fall back into the alarm cycle.
Warning: If the alarm cycle is repeated for 5 times in a few hours the Amplifier will stop.
To restart the Amplifier turn off for some seconds the main power supply 230 Volt and then turn it on.
REFLECTED ALARM (SWR)
When the “SWR”is above 7% of rated power the SWR led starts blinking and the third line “ REF. POWER
ALARM” will appear on the display
A
R
C
H
I
M
E
D
E
3
0
0
0
O
U
T
P
O
W
E
R
.
.
.
.
W
A
T
T
R
E
F
P
O
W
E
R
A
L
A
R
M
H
S
x
x
°
C
I
n
x
x
°
C
If the “SWR”does not return within normal ranges, but will exceed the threshold of 10%, the “CPU”will begin
the process of standby and the display will show the written
A
l
a
r
m
S
W
R
l
i
m
i
t
a
t
i
o
n

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After some seconds the “CPU”will start the sequence of start up. If at the end of the sequence the “SWR”
shall be within the limit the transmission will continue otherwise it will fall back into the alarm cycle.
Warning: If the alarm cycle is repeated for 5 times in a few hours the Amplifier will stop.
To restart the Amplifier turn off for some seconds the main power supply 230 Volt and then turn it on.
Please check if the output impedance is 50 Ohm
TEMPERATURE ALARM
When the CPU detects that a temperature sensor provides a value above the scheduled threshold, the
standby process begins and on the display will be shown the flashing written
T
e
m
p
e
r
a
t
u
r
e
S
T
O
P
The Equipment will stay in alarm until the temperature will come back within normal ranges.
Warning: If the alarm cycle is repeated for 5 times in a few hours the Amplifier will stop.
To restart the Amplifier turn off for some seconds the main power supply 230 Volt and then turn it on.

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USER PROGRAMMING
The end user can change clock, language and the name that appears on the display when the Equipment is on
standby mode. To do this you must follow the following procedure. Press the stop button and wait until the
display will show the written:
P
a
s
s
w
o
r
d
:
At this point insert the password as follows:
push for 3 times the stop button
push for 3 times the start button
Whenever you press a button the display will show the symbol “ * ”to confirm keying in.
If the sequence will be wrong the display will show the written
P
a
s
s
w
o
r
d
:
--
>
W
R
O
N
G
<
--
After a few seconds on the display will appear the written to input the password.
When you enter the correct password the display will show the written
P
r
o
g
r
a
m
m
i
n
g
C
U
S
T
O
M
E
R
P
u
s
h
S
T
A
R
T