R.V.R. Elettronica PJ500M-C User manual

PJ500M-C
UserManual
Manufactured by Italy
LCD Version

PJ500M-C-UserManual
Versione 1.7L
© Copyright 1999-2010
R.V.R.ElettronicaSpA
Via del Fonditore 2/2c - 40138 - Bologna (Italia)
Telefono: [phone]
Fax: [phone]
Email: [e-mail]
Web: www.rvr.it
Allrightsreserved
PrintedandboundinItaly. No partofthismanualmaybereproduced,
memorized or transmitted in any form or by any means, electronic or
mechanic, including photocopying, recording or by any information
storageandretrievalsystem,withoutwrittenpermissionofthecopyright
owner.
File name: 500LCD_CHAP_EN.P65
Version: 1.7L
Date: 01/09/2010
Revision History
1.4L 25/03/2002 MN700 PS Update J. Berti
Version Date Reason Editor
1.5L 14/10/2002 Frontal BiasAdjuist Update J. Berti
1.6L 29/01/2003 A.G.C. Update J. Berti
1.7L 01/09/2010 Specifications Update P.Tassin

Notification of intended purpose and limitations of product use
ThisproductisaFMtransmitterintendedfor FM audio broadcasting. It utilises
operatingfrequenciesnotharmonisedintheintendedcountriesof use.
Theusermustobtainalicensebeforeusing the product in intended countryof
use.Ensurerespectivecountrylicensingrequirements are complied with.
Limitationsofuse can apply in respect of operating freuency, transmitter power
and/orchannelspacing.
Declaration of Conformity
Hereby,R.V.R. Elettronica SpA, declares that this FM transmitter is in
compliancewiththeessentialrequirementsand other relevant provisionsof
Directive 1999/5/EC.

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PJ500M-C
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Table of Content
1. Preliminary instructions 1
2. Warranty 3
3. First Aid 5
3.1 Treatment of electrical shocks 5
3.2 Treatment of electrical Burns 6
4. General Description 7
5. Installation and Use 9
5.1 Preparation 9
5.2 Operation 10
5.3 Software 11
6. Controls, Indicators and Connectors 20
6.1 Front Panel 20
6.2 Rear Panel 21
7. Technical Specifications 22
7.1 Dimensional and Environmental Specifications 22
7.2 Electrical Specifications 22
8. Electrical description 24
8.1 PJ500M-C LCD with MN7000 Option 25
8.2 Power supply 26
8.3 Soft Start 26
8.4 Input directional coupler 26
8.5 RF Power Amplifier 26
8.6 Wilkinson Splitter and Combiner 27
8.7 Bias Card 27
8.8 Low-pass Filter 27
8.9 Ouput Directional Coupler 27
8.10 CPU 27
8.11 Telemetry connector 28
8.12 External telemetry card (optional) 28
8.13 PFC Switching Power Supply (optional) 29
Appendix:
Component layouts, schematics, bills of material

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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.
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. 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 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 reservestherighttomodifythedesign and/or the technical
specifications of the product and this manual without notice.

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PJ500M-C
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2. Warranty
AnyproductofR.V.R. Elettronica iscoveredbya24(twentyfour)month warranty.
Forcomponentsliketubesforpoweramplifiers,theoriginalmanufacturer’swarranty
applies.
R.V.R. extends to the original end-user purchaser all original manufacturers
warranties which are transferable and all claims are to be made directly to R.V.R.
per indicated procedures.
R.V.R.'s warranty shall not include:
1) Re-shipment of the unit to R.V.R. for repair purposes
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
Warranty shall come into force from invoice date and for the period of the
manufactures warranty.
Anydamagetothegoodsmustbereportedtothecarrierinwritingontheshipment
receipt.
Any discrepancy or damage discovered subsequent to delivery, shall be reported
to R.V.R. within five (5) days from its receipt.
To claim your rights under this warranty:
a. Contact the dealer or distributor where you purchased the unit. Describe the
problem and ask if he has an easy solution. 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.
b. If your dealer cannot help you, contact R.V.R. in Bologna and explain the
problem. If it is decided to return the unit to the factory, R.V.R. will mail you a
regularauthorizationwithallthe necessary instructionstosendbackthegoods.
c. 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.

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DO NOT RETURN UNITS WITHOUTOURAUTHORIZATIONAS THEY WILLBE
REFUSED.
a 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 order 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. [phone]

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3. First Aid
Thepersonnelemployedintheinstallation,useandmaintenanceofthedevice,shall
befamiliarwith theory and practice of first aid.
3.1 Treatment of electrical shocks
3.1.1 If 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
• clear out mouth if necessary and observe for breathing
• if not breathing, begin artificial breathing (Figure 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 1 Figure 2
• Check carotid pulse (Figura 3); if pulse is absent, begin artificial circulation
(Figura 4) depressing sternum 1 1/2" TO 2" (Figure 5).
Figura 3 Figura 4 Figura 5
• APPROX. 80 SEC. : ONE RESCUER, 15 COMPRESSIONS
• APPROX. 60 SEC.: TWO RESCUERS, 5 COMPRESSIONS, 1 BREATH
• DO NOT INTERRUPT RHYTHM OF COMPRESSIONS WHEN SECOND
PERSON IS GIVING BREATH
• Call for medical assistance as soon as possible.

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3.1.2 If victim is responsive
•Keep them warm
•Keep them as quiet as possible
•Loosentheirclothing (arecliningpositionisrecommended)
•Call for medical help as soon as possible
3.2 Treatment of electrical Burns
3.2.1 Extensive burned and broken skin
•Cover area with clean sheet or cloth (Cleansed available cloth article).
•Do not break blisters, remove tissue, remove adhered particles ofclothing,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 Less severe burns (1st and 2nd degree)
• 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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4. General Description
RVR Elettronica's PJ500M-C/LCD is a 19" rack-mountable broadband MOSFET
RF power amplifier. It works without adjustments on the whole 87.5 - 108 MHz FM
band,and its power output is 500Wwitha drive level ofabout8W.
The RF power section makes use of two modules, able to deliver more than 300
W each.
The power supply is a switching mode one, and a soft-start circuit is included to
minimize the transformer's current spikes when the device is switched on.
The PJ500M-C/LCD is controlled by a microprocessor system including a LCD
display, implementing the following functions:
•measurement and display of the amplifier's working parameters
•activation and deactivation of the RF power output
•protection of the amplifier against dangerous sistuations like exceeding output
power or swr, overdrive or overtemperature
•detection of user-settable attention thresholds (e.g. output power being below
a certain value), that are made externally available using the "telemetry"
connector
•communication with external devices
The amplifier gives the option for an external 24 V dc power supply: this will
automatically be used to supply the CPU section in case the mains power goes
off, allowing to interact with the device even in such case.
The user can navigate through the menu system using four buttons, ESC, move
LEFT/UP, move RIGHT/DOWN and ENTER. Another button is used to reset the
alarms that possibly arose.
FiveLEDsonthe front paneloftheamplifiershowthe currentstatusofthemachine:
ON/OFF, WAIT, FAULT, LOCAL and FOLDBACK
A switch allows to select the LOCAL or REMOTE mode. LOCAL mode allows to
controlthemachine usingthebuttonsonthefrontpanel,whileremotecontrol(thatis
using the telemetry connector) is disable. In REMOTE mode, buttonson the panel
canbeusedonlytoreadparameters,buttheycanbechangedonlyremotly.
ThePJ500M-CincludestheAutomatic GainControlfeature,thatwillcanbe used to
fix the RF output power of the amplifier to the desired value so that environmental
factors (e.g. temperature) or settings (frequency change) don’t impact onto the
delivered RF power. TheAGC function can be seen as an add-on, meaning that it
canbeexploited ornotdependingontheuserpreferences.Moreinformationsabout
thisaregiveninthe manual.

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Different working parameters are made available for the user on the telemetry
connector, as voltage levels that are proportional to the value of the parameter
underconsideration.
A built-in low-pass filter keeps the harmonic emission level below the CCIR and
FCCpermittedlevels.

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5. Installation and Use
Thischapterisintendedtosummarizethenecessarypointforthe installation of the
device.Incaseanyoftheargumentsisunclear,forexamplewhenyouuseitfor the
firsttime,pleasereadcarefully the wholemanual.
5.1 Preparation
Unpacktheamplifierandbeforeanyother operation check theunitforanyshipping
damage and check that all the controls and connectors on the front and rear
panels are in good conditions.
Check the mains voltage selector on the rear panel: the position of the jumpers to
chose between 220 and 110 mains voltage is indicated on the panel.
Check also the presence and the integrity of the fuses. The required value for the
fusesare:
•RFMODULE 25 A 10X38
•A.C.LINE 10 A 6,3X32
•AUXOUTA.C.LINE 4 A 6,3X32
Verify that the mains switch is in the OFF position.
Connect to the RF input the RF output of a suitable exciter (e.g. RVR Elettronica
PTX30)usingaN-connectors terminatedcable;theexcitershallbe setforminimum
powerandOFF.
Turnthe“PowerAdj.”multiturn trimmeronthefrontpanelcompletelyclockwise.This
operationdisablestheinterventionoftheAGC
LinkoneoftheALARMS/INTERLOCKconnectorstotheINTERLOCKconnector of
theexciter, if available (it is, in RVRElettronicaexciters).
Connect The RF output to the antenna cable or to a suitable dummy load.
Finally, connect a proper cable to the amplifier's mains input.
ATTENTION: the cable has to be disconnected from the mains outlet.
Afterthe cablehasbeensafelyconnected totheamplifier’smainsplug, itispossible
toplugitintothemainsoutlet.
The amplifier shall be mounted in one rack that contain a anti-strap device to not
exposeaccidentallythemainsconductors.

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ATTENTION: It is essential that the unit is properly earthed to ensure both the
safetyofoperationaswellasthecorrectworkingoftheequipment.
5.2 Operation
Switchtheamplifieronandverifythegreen"ON"LEDbeinglit.TheLCDdisplay
willindicateafirstscreenofpresentationoftheamplifierandnextitwillswitchto
ascreenindicatingtheforwardandreflectedpower.
Switchtheexciteron(tominimumpowerlevel)andwaitforittolockontheworking
frequency.Whenthelockedconditionwillbereached,progressively increase its
outputpower,whilecontrollingtheamplifier'sdisplay. Keepincreasingtheexciter
output until the amplifier reaches the desired level, at most 500W. (Please note
that, as result of the digitalization of measurements, it could happen that the
displayed value is not exactly 500W, but a value comprised between 495 and
505;thisisperfectlynormal.)
At this point, the transmitter is set for its nominal power, but the built-in AGC
function is not controlling the output power of the amplifier.Changesinthe
exciter’s power, or in the environmental conditions could reduce the RF power
generatedby theamplifier.
To activatetheAGC,increasethe exciter’s outputlevelupto 8W(theFWD power
oftheamplifier willreach540Wormore,butits internallimiterwillmake shurethat
noharmwillbecausedtothemachine).Theexciter’spowercanalsobemeasured
astheamplifier’sinputpowerinthe“PowerMenu”,asdescribedlaterinthemanual.
NowturncounterclockwisethePWRAdj.trimmeronthefrontpanelofthePJ500M-
Cobservingthereductionin the deliveredpoweroftheamplifier,untilthedesired
levelisreached.
Iftheamplifierhastobeusedatalowerpowerlevel,twowayscanbefollowed:
•If the power reduction will be temporary (e.g. for tests), simply reduce the
exciter’spoweruntiltherequiredlevelisreached
•If the power reduction will be permanent (that is to have lower transmitted
power by the station), first disable the AGC function turning clockwise the
PWR Adj. trimmer of the amplifier. Than reduce the exciter’s power
proportionallytothewanted reduction in the output power of the transmitter.
Finally turn the PWRAdj. trimmer counterclockwise until the desired output
power is reached
At this point, it is possible for the user to verify all the working parameters of the
amplifierusingthemanagementsoftware.

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Normally,the devicedoesn’trequireany humansupervisionforitsnormaloperation.
If any alarm condition arise, these are automatically managed by the embedded
protectionsystem,andnotifiedtotheuserwiththeLEDsonthepanelorviamessages
onthe LCD display.
5.3 Software
Thischapterdescribes in whichmodemicroprocessorsystemcontrolstheamplifier,
andhowtheusercaninteractwith it.
Note that the user can give commands to the device only when it's set in LOCAL
mode using the switch [13] of Figure 1. Otherwise, the user will only be allowed to
read the parameters, but not to change any of them.
The flow diagram in figure 3 gives an overall view of the use interface of the
software.
Atpoweron,theLCD display willshowthefollowingpresentationscreen,indicating
thenameofthedeviceandtheindicationoftheswitch-onpowerlimiterdevicenamed
SoftStart:

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Figure3-Softwareflowdiagram
After a few seconds, the main screen will be dispalyed, reporting the values od
ForwardpowerandReflectedpower
PushingtheESCbutton,theuser will bepresentedwiththemenuselectionscreen,
fromwhichtheotherscreenscanbeaccessed:
Start
~ 2 sec. ESC
DefaultScreen SelectionMenu
ESC Enter
Enter
Enter
Enter
Enter
Enter
SwitchMenu
PAMenu
ThresholdSettings
WarningMenu
VariousMenu
VersionMenu
PowerMenu
Enter

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To enterintoanothermenu,justselectthecorrespondingname(thatwillbeindicated
byaflashingunderscore)withtheLEFTandRIGHTbuttons,andthenpushENTER.
Note that some of the parameters that are measured and can be read may be, in
some circumstances, not available. This situation mostly arises when, for physical
reasons,themeasuredvaluesarenotsignificantto be used in the controlsoftware.
Whenthevalue foraparameterisnotavailableforsuchreasons,it'ssubstitutedwith
thesymbol==.
5.3.1 RF Power switch menu (Fnc)
Fromthisscreentheusercanswitchonandoffthe power amplifier.
When the amplifier is set in the OFF state, the inner conductor of the INTERLOCK
connector will be grounded to force the exciter in stand-by mode(if it is fitted with
suchan option, as RVRexcitersare, and if thedevicesarecorrectly linked). At the
sametime,theauxiliaryACpoweroutputcircuitisopenedtoshutofftheexciterifit
isconnectedtothisplug.
A few seconds after the amplifier is set in OFF mode, the software sends a signal
to the relaysof the blowers to turn them off too (the delay allows for the proper
cooling of the amplifier).
5.3.2 Power menu (Pwr)
In this multi-line scrollable screen it is possible to read all the measurements
related to the behaviour of the power section of the amplifier:
•ForwardPower(FwdPwr)
•ReflectedPower(RflPwr)
•StandingWave Ratio (SWR)
•InputPower(InpPwr)
•InternalSWR(IntSWR)
Depending on the configuration, some of the measurements can be disabled.
Thecompleteaspectof thescreenisthefollowing(please notethatonlytwolinesat

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atimearevisible,usetheUPandDOWNbuttonstoscroll):
5.3.3 Power Amplifier menu (P.A.)
Inthismulti-linescrollablescreenitispossibletoreadthevaluesoftheparameters
related to the RF amplifier section of the device:
•voltage(VPA)
•current(IPA)
•efficiency
•temperature
•mainsvoltage(Percentagevariationreferredtonominalvoltage)
The complete aspect of the screen is the following (only two lines at a time are
visible, use the UP and DOWN buttons to scroll):
5.3.4 Threshold setting menu
Asithasbeensaidintheintroduction,theamplifieroffersamaximumofthreeuser
settablealarms.Foreachofthem,oneoftheworkingparametersiscomparedagainst
athresholdvaluethatcanbebemodifiedbytheuser.Theresultsofthecomparisons
areavailableonthetelemetryconnectororasdrycontactsontheoptionalexternal
telemetryboard,andcanberead on the displayas"O"(open,i.e.theresultisfalse)
or"C"(closed,i.e.the result is true).
Two seatteble thresholds(PowerGood)regardtheemittedpowerlevel,thethirdis
usedtoverifythequantity of reflectedpower(ReflectedWarning).