PJ1000C-LCD - RVR Elettronica SpA Documentation Server

PJ1000C-LCD - RVR Elettronica SpA Documentation Server
PJ1000C-LCD
User Manual
Volume 1
Manufactured by
Italy
File name:
PJ1000C-LCD_en.P65
Version:
1.0
Date:
29/10/2003
Revision History
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PJ1000C-LCD - User Manual
Version 1.0
© Copyright 2003
R.V.R. Elettronica SpA
Via del Fonditore 2/2c - 40138 - Bologna (Italia)
Telefono:
+39 051 6010506
Fax:
+39 051 6011104
Email:
[email protected]
Web:
www.rvr.it
All rights reserved
Printed and bound in Italy. No part of this manual may be reproduced,
memorized or transmitted in any form or by any means, electronic or
mechanic, including photocopying, recording or by any information
storage and retrieval system, without written permission of the copyright
owner.
Notification of intended purpose and limitations of product use
This product is a FM transmitter intended for FM audio broadcasting. It utilises
operating frequencies not harmonised in the intended countries of use.
The user must obtain a license before using the product in intended country of
use. Ensure respective country licensing requirements are complied with.
Limitations of use can apply in respect of operating freuency, transmitter power
and/or channel spacing.
Declaration of Conformity
Hereby, R.V.R. Elettronica SpA, declares that this FM transmitter is in
compliance with the essential requirements and other relevant provisions of
Directive 1999/5/EC.
PJ1000C-LCD
Table of Contents
1.
2.
3.
3.1
3.2
4.
5.
5.1
5.2
5.3
6
6.1
6.2
6.3
7.
7.1
7.2
8.
8.1
8.2
8.3
8.4
8.5
8.6
8.7
9.
9.1
9.2
Preliminary Instructions
Warranty
First Aid
Treatment of electrical shocks
Treatment of electrical Burns
General Description
Quick guide for installation and use
Preparation
Use
Software
External Description
Front Panel
Rear Pannel
Connectors description
Technical specifications
Physical specifications
Electrical specifications
Working Principles
Power Supply
Panel board - CPU
Telemetry board
PWR Input Measure card
Power amplifier
LPF card
BIAS card
Identification of the Modules
Upper view
Bottom view
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1. Preliminary Instructions
This manual is written as a general guide for those having previous knowledge
and experience with this kind of equipment, well conscious of the risks connected
with the operation of electrical equipment.
It is not intended to contain a complete statement of all safety rules which should
be observed by personnel in using this or other electronic equipment.
The installation, use and maintenance of this piece of equipment involve risks
both for the personnel performing them and for the device itself, that shall be used
only by trained personnel.
R.V.R. Elettronica SpA doesn’t assume responsibility for injury or damage resulting
from improper procedures or practices by untrained/unqualified personnel in the
handling of this unit.
Please observe all local codes and fire protection standards in the operations of
this unit.
WARNING: always disconnect power before opening covers or removing any part
of this unit.
Use appropriate grounding procedures to short out capacitors and high voltage
points before servicing.
WARNING: this device can irradiate radio frequency waves, and if it’s not installed
following the instructions contained in the manual and local regulations it could
generate interferences in radio communications.
This is a "CLASS A" equipment. In a residential place this equipment can cause
hash. In this case can be requested to user to take the necessary measures.
R.V.R. Elettronica SpA reserves the right to modify the design and/or the technical
specifications of the product and this manual without notice.
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2. Warranty
Any product of R.V.R. Elettronica is covered by a 24 (twenty-four) month warranty.
For components like tubes for power amplifiers, the original manufacturer’s warranty
applies.
R.V.R. Elettronica SpA extends to the original end-user purchaser all
manufacturers warranties which are transferrable and all claims are to be made
directly to R.V.R. per indicated procedures.
Warranty shall not include:
1 Damage while the equipment is being shipped to R.V.R. for repairs;
2 Any unauthorized repair/modification;
3 Incidental/consequential damages as a result of any defect
4 Nominal non-incidental defects
5 Re-shipment costs or insurance of the unit or replacement units/parts
Any damage to the goods must be reported to the carrier in writing on the shipment
receipt.
Any discrepancy or damage discovered subsequent to delivery, shall be reported
to R.V.R. Elettronica within 5 (five) days from delivery date.
To claim your rights under this warranty, you shold follow this procedure:
1 Contact the dealer or distributor where you purchased the unit. Describe the
problem and, so that a possible easy solution can be detected.
Dealers and Distributors are supplied with all the information about problems
that may occur and usually they can repair the unit quicker than what the
manufacturer could do. Very often installing errors are discovered by dealers.
2 If your dealer cannot help you, contact R.V.R. Elettronica and explain the
problem. If it is decided to return the unit to the factory, R.V.R. Elettronica
will mail you a regular authorization with all the necessary instructions to send
back the goods.
3 When you receive the authorization, you can return the unit. Pack it carefully
for the shipment, preferably using the original packing and seal the package
perfectly. The customer always assumes the risks of loss (i.e., R.V.R. is never
responsible for damage or loss), until the package reaches R.V.R. premises.
For this reason, we suggest you to insure the goods for the whole value.
Shipment must be effected C.I.F. (PREPAID) to the address specified by R.V.R.’s
service manager on the authorization
DO NOT RETURN UNITS WITHOUT OUR AUTHORIZATION AS THEY WILL BE
REFUSED
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PJ1000C-LCD
4 Be sure to enclose a written technical report where mention all the problems found
and a copy of your original invoice establishing the starting date of the warranty.
Replacement and warranty parts may be ordered from the following address. Be
sure to include the equipment model and serial number as well as part description
and part number.
R.V.R. Elettronica SpA
Via del Fonditore, 2/2c
40138 BOLOGNA
ITALY
Tel. +39 051 6010506
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3. First Aid
The personnel employed in the installation, use and maintenance of the device,
shall be familiar with theory and practice of first aid..
3.1
3.1.1
Treatment of electrical shocks
If the victim is not responsive
Follow the A-B-C's of basic life support
•
Place victim flat on his backon a hard surface.
•
Open airway: lift up neck, push forehead back (Fig. 3-1).
•
clear out mouth if necessary and observe for breathing
•
if not breathing, begin artificial breathing (Figure 3-2): tilt head, pinch nostrils,
make airtight seal, four quick full breaths. Remember mouth to mouth
resuscitation must be commenced as soon as possible
Figure 3-1
•
Figure 3-2
Check carotid pulse (Fig 3-3); if pulse is absent, begin artificial circulation
(Fig. 3-4) depressing sternum (Fig. 3-5)
Figure 3-3
Figure 3-4
Figure 3-5
•
In case of only one rescuer, 15 compressions alternated to two breaths.
•
If there are two rescuers, the rythm shall be of one brath each 5 compressions.
•
Do not interrupt the rythm of compressions when the second person is giving
breath.
•
Call for medical assistance as soon as possible.
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PJ1000C-LCD
3.1.2
3.2
3.2.1
If victim is responsive
•
Keep them warm
•
Keep them as quiet as possible
•
Loosen their clothing (a reclining position is recommended)
•
Call for medical help as soon as possible
Treatment of electrical Burns
Extensive burned and broken skin
•
Cover area with clean sheet or cloth
•
Do not break blisters, remove tissue, remove adhered particles of clothing, or
apply any salve or ointment.
•
Treat victim for shock as required.
•
Arrange transportation to a hospital as quickly as possible.
•
If arms or legs are affected keep them elevated
If medical help will not be available within an hour and the victim is conscious and
not vomiting, give him a weak solution of salt and soda: 1 level teaspoonful of salt
and 1/2 level teaspoonful of baking soda to each quart of water (neither hot or
cold). Allow victim to sip slowly about 4 ounces (half a glass) over a period of 15
minutes. Discontinue fluid if vomiting occurs
DO NOT give alcohol
3.2.2
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Less severe burns
•
Apply cool (not ice cold) compresses using the cleansed available cloth article.
•
Do not break blisters, remove tissue, remove adhered particles of clothing, or
apply salve or ointment.
•
Apply clean dry dressing if necessary.
•
Treat victim for shock as required.
•
Arrange transportation to a hospital as quickly as possible
•
If arms or legs are affected keep them elevated.
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PJ1000C-LCD
4. General Description
The PJ1000C-LCD, made by R.V.R. Elettronica SpA, is an amplifier for Frequency
Modulated audio broadcasting in a frequency modulation able to transmit in the
band between 87.5 and 108 MHz, with an output RF power adjustable up to a
maximum of 1000 W into a 50 Ohm standard load and with a driver power less than
20 W.
This amplifier contains a low-pass filter that reduces the harmonic emissions to below
the limits allowed by international regulations (CCIR or FCC).
Important PJ1000C-LCD features are compactness and great use simplicity. The
machine, infact, was designed to be modular: its various functions are run from
modules directly connected to each other with male and female connectors or with
flat cables ending in connectors. This type of design makes maintenance operations
and any required module replacement easier.
The RF power section makes use of four MOSFET modules, able to deliver more
than 300W each.
PJ1000C-LCD is able to work in all range frequency without calibration and setting
operations.
The microprocessor system includes an LCD display on front panel and push-button
panel for interaction with the user, and implements the following functions:
•
Setting the output power
•
Activation and deactivation of power delivery
•
Setting the Power Good threshold
•
Measurement and display of the working parameters of the amplifier
•
Communications with outside devices
Four LEDs indicate the machine status and are found on the front panel: ON, LOCK,
FOLDBACK and RF MUTE, moreover two red LEDs indicate eventual Power Supply
breakdowns.
The amplifier's management software is based on a menu system. The user can
navigate between the various submenus by using four push buttons: ESC, LEFT/UP,
RIGHT/DOWN and ENTER.
On rear panel there are Mains connectors, with a voltage selector that allow to use
different mains voltage (Full Range version), RF input and output connectors, telemetry
connector, protection fuses, input and output interlock connectors and RF Test
connector at -60 dB to monitoring modulation.
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5. Quick guide for installation and use
This chapter contains the necessary information for installing and using the
machine. If any aspects are not completely clear, for example when using the machine
for the first time, we recommend you carefully read the entire description contained
in this manual.
5.1
Preparation
Unpack the amplifier and before doing any other operation, be sure it has not been
damaged during transport. In particular check that all the connectors are in perfect
condition.
Check that the voltage selected coincide with mains voltage. The protection fuses
can be accessed from the outside on the rear panel (see figure 6.2). Extract the fuse
carrier with a screwdriver to check its integrity or for replacement, if necessary. The
fuses to be used are different and depends from the mains voltage selected:
Mains Voltage: 115 V
Mains Fuse:
25A 10x38
Service Fuse: 2A 5x20
Mains Voltage: 230 V
Mains Fuse:
16A 10x38
Service Fuse: 1A 5x20
Connect to the RF Input the RF Output of suitable exciter (for example the RVR
Elettronica's PTX30) using a N-connectors terminated cable; the exciter shall be set
for minimum power and OFF.
Link one of the Alarms/Interlock connectors to the Interlock connector of the exciter, if
available (it is in RVR Elettronica's exciters).
Connect the RF output to the antenna cable or to a suitable dummy load.
ATTENTION: without load, when machine is working, don’t touch RF output connector
to avoid electrical shocks and burns.
Connect the mains cable to the MAINS connector on rear panel (figure 6.2 note [3]).
ATTENTION: mains connector is a bare terminals, attention that line is not under
voltage when you are connecting it.
ATTENTION: It is crucial that the mains system be provided with earthing to ensure
both the operators' safety and correct operation of the device.
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PJ1000C-LCD
5.2
Use
Switch ON the amplifier and verify the green "ON" LED is lit. The LCD display will
show first screen with the indication of forward and reflected power value. Verify that
there is not power limitation: push ENTER button until that it enter in modify mode
with the instantaneous power reading and with a series of vertical bars that it indicates
power level. Place cursor on series of vertical bars and push RIGHT/DOWN button
until bars fill up all the screen. Then, push ENTER button to confirm.
Switch ON the exciter (to minimum power level) and wait for it to lock on the working
frequency. When the locked condition is reached, progressively increase its output
power, while controlling the amplifier's display. Keep increasing the exciter output
until the amplifier’s output power is over 1000W. Then, come back in modify mode
and, through LEFT/UP button, decrease power until its value is 1000 W. Then, push
ENTER button to confirm.
At this point, you can verify all the amplifier’s working parameters using the
management software.
Normally, the device doesn't require any human supervision for its normal operation.
If any alarm conditions happen, these are automatically managed by the embedded
protection system, and notified to the user with the LEDs on the panel or through
messages on the LCD display.
NOTE: When the device leaves the factory, it is delivery with the output power
adjustment at maximum and in the OFF position.
5.3
Software
The machine is provided with a two-line LCD display where a set of menus is shown.
An overall view of the machine's menus is given in figure 5.1.
One of the following symbols may be present on the left side of the display, depending
on the case:
The parameter highlighted by the arrow can be modified
The arrow points out the current line, the parameter of which cannot be modified.
This symbol is present in the menus made up of more than two lines to help
scroll the menu.
When turned on, the LCD display shows the predefined screen, with the indication of
the forward and reflected power values:
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PJ1000C-LCD
To change the set power level, select the line relating to the forward power and
keep the ENTER push button pressed until it enters the modify mode.
The screen that is shown in the modify mode is similar to the following:
The upper line gives the instantaneous reading of the power (997 W in this example),
whereas the bar indicates the set level.
To increase level, press the RIGHT/DOWN push button and to decrease it, press
LEFT/UP. As the set level increases or decreases, the bar becomes longer or shorter
to display the current setting. When the desired level is reached, press ENTER to
confirm and exit the predefined menu.
Note that the set value is stored anyway, so if you press ESC or let the timeout go by
without pressing a key, the power will remain at the last set level.
If you push the ESC button while you are in the predefined menu, it will be shown to
user the next selection screen from which you can access all the other menus:
To enter one of the submenus, select its name (which will be underlined by a blinking
cursor) with the RIGHT or LEFT push buttons and then push the ENTER button.
If you instead want to go back to the predefined menu, all you have to do is press the
ESC push button again.
Figure 5.1 shows the complete set of the machine's menus.
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PJ1000C-LCD
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Figure 5.1
5.4.1
Operation Menu (Fnc)
Through this menu the user can activate or deactivate power distribution, set “Local”
or “Remote” control and set percentage power of Power Good.
To modify one of the three functions, select the relative line with UP and DOWN push
buttons and then press for a long time the ENTER push button until the command is
accepted. So, the Pwr setting will change from On to Off or inverse and the Loc
setting will change from "LOCAL" to "REMOTE" or inverse. To change the percentage
value of Power Good, after selected PWG voice you must change its value with UP
and DOWN push button and then confirm with ENTER.
The Power Good function is a distributed power check and alarm function.
When output power is under Power Good threshold value, machine changes DB15
“Remote” connector’s pin state on rear panel (see figure 6.2 note [12]).
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PJ1000C-LCD
Percentage Power Good value is refered to nominal machine power, that is 1000 W,
and is not refered to distributed power. So, if you set 80% value, it will correspond to
800 W, indifferently from set up power.
5.4.2
Power Menu (Pwr)
This screen shows the user the measures relating to the exciter’s RF power output:
•
Forward Power (Fwd)
•
Reflected Power (Rfl)
•
Input Power (Inp)
The values shown are "readings", and therefore cannot be modified (note the empty
triangle). To modify the power setting, use the predefined menu as described above.
5.4.3
Power Amplifier Menu (PA)
This screen, consisting by four lines that can be scrolled with UP and DOWN push
buttons, shows to user the measures relating to the device's final power amplifier:
•
Voltage (VPA)
•
Current consumption (IPA)
•
Efficiency FWD PWR/(Vpa X Ipa)% (EFF)
•
Temperature (TMP)
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PJ1000C-LCD
5.4.4
Alarms Menu (Alm)
This menu signals the alarm situations that happens during machine working.
The screen numbers the alarm situations until 10, they are refered to an excess of
forward power, to an excess of reflected power and to an excess of input power. After
check the alarm situation, you can reset the numeration placing cursor on “Rst” voice
and pushing for a long time the ENTER button.
5.4.5
Miscellaneous Menu (Mix)
This menu allows you to set the machine's address in a o I2C type of serial bus
connection:
The I2C network address is important when the exciter is connected to an RVR
transmission system that envisages use of this protocol. We recommend you do not
modify it without a good reason.
5.4.6
Versions Menu(Vrs)
This screen shows the version and the release date of the software.
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6 External Description
This chapter describes the elements placed on front and on rear panels of the
PJ1000C-LCD.
6.1
Front Panel
Figure 6.1
[1] ON
[2] LOCK
[3] FOLDBACK
[4] R.F. MUTE
[5] CONTRAST
[6] ESC
[7] LEFT/UP
[8] RIGHT/DOWN
[9]
[10]
[11]
[12]
[13]
[14]
User Manual
ENTER
DISPLAY
POWER
AIR FLOW
ALARMS PS1
ALARMS PS2
Green LED, lit when the exciter is working
Red LED, lit when there is an alarm warning (chapter 5.4.4)
Yellow LED, lit when the foldback function is operating
(automatic reduction of the delivered RF power)
Yellow LED, lit when the exciter’s power output is inhibited by an
external interlock command
Display contrast adjusting trimmer
Push button to exit from a menu
Push button to move in the menu system and to modify the
parameters
Push button to move in the menu system and to modify the
parameters
Push button to confirm a parameter and to enter in a menu
Liquid crystals display
ON/OFF switch.
Grid for the intake of the air flow of the forced ventilation
Red LED, lit when the Power Supply 1 doesn’t work correctly
Red LED, lit when the Power Supply 2 doesn’t work correctly
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PJ1000C-LCD
6.2
Rear Pannel
figure 6.2
[1] R.F. TEST
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
16 / 26
Output at -60 dB refered to output power level, adapted to
modulation monitoring. Do not use it for spectral analysis.
AIR FLOW
Grid for the intake of the air flow ventilation.
MAINS
Mains supply connectors, 115-230 V 50-60 Hz.
FUSE 1
Mains supply fuse.
R.F. INPUT
RF input connector, “N” type.
R.F. OUT
RF output connector, 7/16” type.
INTERLOCK IN
BNC interlock in connector: the amplifier is forced in stand-by
mode when the inner conductor is grounded.
FWD EXT. AGC
Trimmer for the control of the delivered power in function of the
income FWD fold (REMOTE connector).
RFL EXT. AGC
Trimmer for the control of the delivered power in function of the
income RFL fold (REMOTE connector).
INTERLOCK OUT
BNC interlock out connector: when amplifier is in stand-by mode,
the inner conductor, usually floating, become grounded.
RS232
DB9 connector for interconnection with other devices and for
factory parameters programming.
REMOTE
DB15 connector for telemetry of the machine.
SERVICE VOLTAGE SEL. Mains voltage selector 120-240 V.
SERVICE FUSE
Service protection fuse.
FUSE 2
Mains supply fuse.
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PJ1000C-LCD
6.3
6.3.1
Connectors description
RS232
Type: DB9 female
6.3.2
1
2
3
4
5
6
7
8
9
NC
TX_D
RX_D
Internally connected with 6
GND
Internally connected with 4
Internally connected with 8
Internally connected with 7
NC
Remote
Type: DB15 female
User Manual
Pin
1
2
3
4
5
6
7
Name
Interlock
Ext AGC FWD
GND
SDA IIC
VPA Tlm
FWD tlm
Power Good
Type
IN
IN
I/O
OUT anal.
OUT anal.
OUT digit.
8
9
10
11
12
13
14
GND
GND
Ext AGC RFL
SCL IIC
IPA Tlm
RFL Tlm
On cmd
IN
I/O
OUT anal.
OUT anal.
IN digit.
15
OFF cmd
IN digit.
Meant
Inhibits power if closed to GND
External signal for power limitation (AGC)
Ground
Serial data for IIC communications
Mains voltage PA: 5 V for 62 V
Forward power: 3 V for 1245 W
Open collector, ON when power is over set
up threshold (cap. 5.4.1)
Ground
Ground
External signal for power limitation (AGC)
Clock for IIC communications
Mains current PA: 5 V for 47 A
Reflected power: 3 V for 230 W
An impulse to ground (500 ms) active
power output
An impulse to ground (500 ms) inhibits
power output
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7. Technical specifications
7.1
Physical specifications
7.2
Electrical specifications
Panel size
Depth
Weight
Working Temperature
Cooling
General
RF output power
Frequency range
Spurious and Harmonics suppression
Input Drive Power
C.A. power supply
Power consumption at 1000 W RF
Input
R.F. Input Connector
Input impedance
Output
R.F. Out Connector
Output impedance
R.F. Test Connector
Remote connections
Interlock IN
Interlock OUT
Serial interface
Telemetry card
User Manual
483 mm (19”) x 132.5 mm (3 HE)
650 mm (26 1/2”)
33 Kg
-10 °C ÷ 50 °C
Forced Ventilation
0 to 1000 W, adjustable with continuity
87.5 MHz ÷ 108 MHz, step 10kHz
Respects relevant FCC and CCIR standards
(typical -75 dBc)
≅ 20 W
≅ 90 V ÷ 250 V, full-range.
Power factor > 0.97 (with PFC)
≅1,7 kVA
"N" Type
50 Ω
Standard connector 7/16”
50 Ω
BNC connector, -60 dB wrt. carrier level
impedance 50 Ohm
BNC female: the amplifier is forced in
stand-by mode when the inner conductor is
grounded
BNC female: when amplifier is in stand-by
mode, the inner conductor, usually floating,
become grounded
DB9 female RS232
DB15 female, give indications on the state of
the device
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8. Working Principles
A schematic view of the modules and connections making up the PJ1000C-LCD is
shown in figure 8.1.
R.F. INPUT
PWR INPUT
MEASURE
R.F.
4 X R.F.
SPLITTER
4 X R.F.
RF MODULES
R.F.
COMBINER
LPF +
DIRECT. COUPL.
R.F.
OUTPUT
BIAS
4 X VPA (50VDC)
FUSE BOARD
FWD PWR
RFL PWR
4 X VPA (50VDC)
BIAS
VOLTAGE REG.
MAINS
INTERFACE
4 X 50VDC
PANEL
PS ALARM
DC
SURGE
PROT.
PFC
(RECTIFIER)
ALIM 50V 25A
LED CARD
TELEMETRY
Figure 8.1
Below a brief description of each module's functions is given, while the complete
diagrams and layouts of the cards are given in the “Technical appendix” in vol.2.
8.1
Power Supply
PJ1000C-LCD power supply is composed by three important sections:
1. Over range protection. Surge Protection board (see cap. 8.1.1) protects machine
from eventual unexpected variations of the mains voltage .
2. Service. This section contains elements that do not regard directly the power
supply, they are:
- Service transformer
- Power switch
- Service voltage selector
- Service fuse
3. Power Supply. Various units supplies an adapted supply to RF power amplifier
modules. The units that compose power supply are rectifiers (PFC or traditionals)
and switching supply. Machine is available in different configuration for voltage
rectify:
- One PFC (only 230 V)
- Two PFC (115-230 V)
- One rectifier (only 230 V)
- Two rectifiers (115-230 V)
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PJ1000C-LCD
8.1.1
Surge Protection
This card contains two mains fuse accessible from outside (figure 6.2 note [4] and
[15]) and it contains a MOV battery to protect main supply and machine from over
range mains voltage. Then the mains voltage reaches the main Power switch placed
on front panel and, if it is on ON state, mains voltage arrives to TR1 service transformer.
One of its secondary output generates (through interface card) 24V voltage that
excites power relè placed on Surge card, so PFC or rectifier units, connect to it, will
be on voltage.
8.1.2
PFC board (rectifiers)
PFC units are rectifiers that modulates absorbed current so that the wave shape is
sinusoide, having so 99% power factor.
PFC can work with input mains voltage from 90 V to 250 V. When you use it with
mains voltage of 110 V, is necessary to install two PFC units because there is a lot of
absorbed current. In PFC output there are 350 V of rectified voltage.
You can replace PFC units with one or two “traditional” rectifying units (but without
power factor protection).
8.1.3
Power supply
There are two power supply switching mode of 50 V 25 A, that have an input voltage
check. Output voltage is set from microprocessor in function of RF power required.
Two power supply units works in parallel mode and they have a balance current circuit
so that the distributed current from every module is approximately the same one.
8.2
Panel board - CPU
The panel card contains the microcontroller (PIC16F877) that implements the
machine's control software, the display and the other components needed to interface
the user.
The card interfaces with the other machine modules, both for power supply distribution
and for the control and measures.
8.3
Telemetry board
This card is the input/output CPU interface with external world. All the available input
and output signals are replied on the DB15 “REMOTE” connector (see cap. 6.3.2).
On the same board there is also the BNC connector of interlock to disable device.
Closing the central pin to ground, the output power is reduced to zero until connection
doesn’t removed.
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PJ1000C-LCD
When it is used with a R.V.R. exciter, this connector is connected, through a
BNC-BNC connector, to REMOTE or to INTERLOCK of the exciter. In case of
breakdowns of the exciter, the central conductor is place to ground forcing the device
to enter in stand-by mode.
8.4
PWR Input Measure card
This card makes two check and measure functions:
8.5
-
Input power measure, measure sended to interface card that supplies to send
machine in protection mode in case of input power excess
-
Temperature measure
Power amplifier
RF power amplifier section is made with four power amplifier modules combined
through a Wilkinson splitter and a Wilkinson combiner in strip-line technology.
The splitter is used to divide input power from PWR Input Measure card and to supply
a quarter of it to every RF module. The combiner is used to combine output power
from every RF module so as to have total power amplifier.
Splitter, amplifier and combiner are plans so that powers generated from the
amplifiers add its in phase, diminishing the loss of balance and therefore the
dissipation of useful power.
All RF section is placed on a fin that supplies to the cooling through forced ventilation.
Every RF module supplies 300 W and is supplied from a switching supply.
The active device used in amplifier module is a Mosfet (BLF278).
8.6
LPF card
This card is a low-pass filter and its function is to suppress the harmonic components
generated by the amplifier below the levels required by regulations.
Moreover, in the end of filter, there is a directional coupler, its function is the
measurement of the forward and reflected output power.
On this card there is an RF sample at -60 dB compared with the output and it is
available on a BNC connector. This sample is useful for checking the characteristics
of the carrier, but not of the higher order harmonics.
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PJ1000C-LCD
8.7
BIAS card
Main function, of this card, is to check and to correct the polarization voltage (BIAS)
of Mosfet in RF amplifier section.
Moreover it supplies the measure of the absorbed current as sum of the absorbed
currents from every module and it contains a circuit for the signalling of the breakdowns
in the Power Supply.
Without alarm condition, Bias voltage is regulated only in function of output power set
up, with a feedback mechanism based on the reading of the effectively distributed
power (AGC).
Bias voltage is also influenced from other factors like:
- Excess of reflected voltage
- External AGC signals (Ext. AGC FWD, Ext. AGC RFL,...)
- Excess of temperature
- Excess of absorbed current from a RF module.
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PJ1000C-LCD
9. Identification of the Modules
The PJ1000C-LCD is made up of various modules connected to each other with
connectors so as to make maintenance and any required module replacement easy.
9.1
Upper view
The 9.1 figure shows the upper view of the machine (230 V version, only one PFC
module) with the various components pointed out.
Figure 9.1
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
User Manual
Bias Board (SLBIAS1K3U-2)
Pass Thru Board (SLFILPJ1KM)
LPF Board (SLLPFTEX1KL)
Panel Board (SLPANTXLC004)
Impeller FAN1 (VTL4184)
Alim 50V 25A Module 1 (PSL1000_PJ1K)
Alim 50V 25A Module 2 (PSL1000_PJ1K)
Power Factor Module 1 (PFCPSL1000)
Surge Protection Board (SLSRGPRPJ1KM)
Telemetry Board (SLTLMTXLCD02)
Turbine FAN2 (VTLG1E120)
PWR Input Measure Board (SLDRVTEX500L)
Splitter Card (SLSPLPJ1KC1)
RF Board (SLRFPJKMU44)
Combiner Card (SLCMBPJ1KC1)
Fuse Board (SLFUSRFPJ1KC)
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PJ1000C-LCD
9.2
Bottom view
The 9.2 figure shows the bottom view of the machine with the various components
pointed out.
Figura 9.2
[1]
[2]
[3]
[4]
[5]
[6]
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Filter Card (SLFILPSPJ1KC)
LED PS Board(SLLEDPSTEX1K)
Interface Board (SLINTTX500-2)
Trasformer TR1 (TRFTEX1000T)
Bare Terminals MO1 (MORSWDMK3/12)
Telemetry Board (SLTLMTXLCD02)
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User Manual
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