R.V.R. Elettronica VJ1000HP User manual

Prodotto da Italia
VJ1000HP
User Manual

VJ1000HP - USER MANUAL
Version 4.0
© Copyright 1993-2001
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.Nopartofthismanual may be reproduced,
memorized or transmitted in any form or by any means, eletronic or
mechanic, including photocopying, recording or by any information
storageand retrievalsystem,whithout the permissionofthe copyright
owner.

Notification of intended purpose and limitations of product use
Thisproductisa FM transmitter intended for FM audio broadcasting. It utilises
operatingfrequencies not harmonised intheintendedcountries of use.
Theuser must obtain alicensebeforeusing the productinintendedcountry of
use.Ensure respective countrylicensingrequirements are compliedwith.
Limitationsofusecanapplyin respect of operating freuency, transmitterpower
and/orchannel spacing.
Declaration of Conformity
Hereby,R.V.R.ElettronicaSpA,declaresthatthisFMtransmitteris in
compliancewith the essentialrequirementsand other relevantprovisionsof
Directive 1999/5/EC.

This page intentionally left blank

VJ1000HP
iUSER MANUAL Rev. 4.0 - 26/02/01
Table of Content
1. Preliminary instructions 1
2. Warranty 2
3. First Aid 4
3.1 Treatment of electrical shocks 4
3.1.1 If victim is not responsive 4
3.1.2 If victim is responsive 5
3.2 Treatment of electrical Burns 5
3.2.1 Extensive burned and broken skin 5
3.2.2 Less severe burns (1st and 2nd degree) 5
4. General Description 6
4.1 Mechanical Description 6
4.2 Electrical Description 6
4.3 Controls and Indicators 6
4.4 Protection System 7
4.5 Specifications 7
5. Electrical Description 10
5.1 Introduction 10
5.2 Power Supply 10
5.3 Protection Card 10
5.4 Tube 10
6. Installation Procedure 24
6.1 Introduction 24
6.2 Unpacking 24
6.3 Fitting the Tube 24
6.4 Connection and Setup Procedures 24
6.5 Fault Finding during the Setup Procedure 26
7. Maintenance Procedure 28
7.1 Safety Procedures 28
7.2 Routine Maintenance 28
7.3 Replacement of Components 28
7.4 Replacement of the Tube 29
7.5 Changing the Air Filter 29
8. Calibration Procedure 30
8.1 Frequency Changes 30
8.2 Calibration of the Protection Card 31
8.3 Calibration of the PWR Meter (REF) 32
8.4 Calibration of the PWR Meter (FWD) 32
8.5 Calibration of the Grid Current Meter (IG) 33
8.6 Calibration of Anode Measurement (IA) 33
9. Connectors Description 37

VJ1000HP
ii USER MANUALRev. 4.0 - 26/02/01
9.1 Telemetry Connector 37
10. Telemetry Card Option 38
10.1 Calibration of the Voltages on the Telemetry connector 38
10.2 Wiring Connections details 38
10.3 General Verifications 39
Appendix 40

VJ1000HP
1 / 40USER MANUAL Rev. 4.0 - 26/02/01
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 "CLASSA" 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 theright tomodifythe designand/or thetechnical
specifications of the product and this manual without notice.

VJ1000HP
2 / 40 USER MANUALRev. 4.0 - 26/02/01
2. Warranty
Any product of R.V.R. Elettronica is covered by a 12 (twelve) 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.
Anydamage tothe goodsmust bereported tothe carrierin writing onthe shipment
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
problemandaskifhehas aneasysolution.DealersandDistributors aresupplied
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
regularauthorization withall thenecessaryinstructions tosend backthe goods.
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.
ShipmentmustbeeffectedC.I.F.(PREPAID)totheaddress specifiedbyR.V.R.’s
service manager on the authorization.

VJ1000HP
3 / 40USER MANUAL Rev. 4.0 - 26/02/01
DO NOT RETURN UNITS WITHOUT OUR AUTHORIZATION AS THEY WILL
BE 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]

VJ1000HP
4 / 40 USER MANUALRev. 4.0 - 26/02/01
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 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.

VJ1000HP
5 / 40USER MANUAL Rev. 4.0 - 26/02/01
3.1.2 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
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 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 Less severe burns (1st and 2nd degree)
• Applycool (not ice cold) compresses usingthe 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.

VJ1000HP
6 / 40 USER MANUALRev. 4.0 - 26/02/01
4. General Description
4.1 Mechanical Description
The VJ1000HP is housed in a 19" rack-mountable frame, 14U high, of which 4U are
free and may be used for an exciter, a receiver or other equipment.
All controls and switches are situated on the front panel together with two analog meters.
There are no connectors on the rear panel.
Both the cooling air inlet complete with fan and filter, and the power cable entry hole may be
found on this panel.
A flue may be found on the top of the unit for the expulsion of hot air used for coooling the
unit, together with the RF output connector (to be connected to the antenna).
4.2 Electrical Description
The VJ1000HP is a tube amplifier with an earthed grid allowing a wide-band input (no
calibration across the band) from 87.5 to 108MHz.
This amplifier is able to generate an output power of over 1KW from an input power of
approx. 25W.
The amplifier features motorized anode and load matching across the entire operational
band.
The VJ1000HP is available in single phase version.
4.3 Controls and Indicators
Two analog meters are present on the front panel; one measures direct power output
and reflected power output (1 Fig.1), the other measures plate and grid currents (3 Fig.1).
The output power meter has only one scale 1KW f.s.,both for the measurement of the direct
power output and for reflected power output.
The meter for the measurements of the grid and plate currents has two scales too; one for
1A f.s.for the measurement of the grid current and for 100mA for the grid current.
For each of these meters there are the relative reading selector
(2 and 4 Fig.1).
In central position there are some switches and led indicators that concern to the plate and
load tuning: the two led indicators signal respectively the stop for the plate tuning at 87.5
MHz (6 Fig.1) and at 108 MHz (8 Fig.1), while the three selectorsare used rispectively for to
enable the engines of tuning (5 Fig.1), for the plate tuning (7 Fig.1) and for the load tuning (9
Fig.1).
Then there are three led indicators that signal alarms: for an excess of R.O.S. (10 Fig.1), for
insufficient fan pressure (11 Fig.1) and for an excess of grid current (12 Fig.1).

VJ1000HP
7 / 40USER MANUAL Rev. 4.0 - 26/02/01
The following are present on the front panel: an HT indicator which signals that the high
voltage supply is active; a switch to activate the HT supply, or put the unit in stand-by (ST.BY.
15 Fig.1); an on-off switch and corresponding indicator (14 and 16 Fig.1).
4.4 Protection System
TheVJ1000HP featuresprotection against:excess VSWR,excess gridcurrent, opening
of panels with the unit active, and insufficient ventilation.
Under abnormal conditions the unit will be automatically disactivated; after 90 seconds the
protection system will re-activate the unit if the condition has returned to normal, unless a
panel is still open or the cooling system lacks sufficient pressure.
Inthis event,the procedureis repeatedfour times,after whichthe unit willremain disactivated
for 15 minutes.
If, after 15 minutes, the condition is still present, four more switch-on attempts are made,
after which the unit is shut down indefinately.
Should,during thesecycles,the faultcondition dissappearand theprotectionsystem succeed
in re-activating the unit for more than 15 minutes, the fault condition counter will be reset to
zero.
N.B. The times indicated above are approximate and may vary considerably.
4.5 Specifications
Please refer to Table A for the electrical specification and Table B for the mechanical
specification.

VJ1000HP
8 / 40 USER MANUALRev. 4.0 - 26/02/01
TABLE A
ELECTRICAL SPECIFICATIONS
Power Supply Single Phase: 220-240 V, 50-60 Hz
Frequency Range 87,5 - 108 MHz (others on request)
Output Power 850 - 1100 W
RF Output Impedance 50 Ohm
Output Connector "LC” connector, 7/8" o 7/16"
RF Input Impedance 50 Ohm
Input Connector "N" type connector
RF Input Power 20 W typical, max 25 W
Tube EIMAC 3CX1500 A7 (8877)
Cooling System Forced ventilation
Harmonic and Spurious Meets or exceeds FCC and CCIR
Signal Soppression regulations

VJ1000HP
9 / 40USER MANUAL Rev. 4.0 - 26/02/01
TABLE B
DIMENSIONAL AND ENVIRONMENTAL SPECIFICATIONS
Rack Dimensions 540mm(21,26")W
540mm(21,26)D
698,3mm(27,49")H
Panel Dimensions 483mm(19)W
443mm(17,44")H
Weight 65 Kg
Operating Temperature Range da -10 a +45°C
Maximum Humidity max 90%, senza condensa

VJ1000HP
10 / 40 USER MANUALRev. 4.0 - 26/02/01
5. Electrical Description
5.1 Introduction
This section describes in detail, the operation of the VJ1000HP.
For ease of description, the unit has been divided into sections, each of which is described in
detail, below.
5.2 Power Supply
The power supply, accessible via the rear panel, has been designed to be both rugged
and at the same time simple to maintain, allowing easy access to every component thus
easing repair work.
The power supply features a PI filter after the rectifying stage which attenuates spurious
components.
Two fuses provide overload protection.
Thepower supply comprises twoseparate transformers: the largestsupplies the tubeanode,
the other transformer supplies the tube's filament and supplies various functions such as
relays and the protection system.
This power supply is designed to work at single phase voltages.
5.3 Protection Card
Thiscard is mounted in ametal box and fixed to the right-handside of the RFchamber’s
chassis(6Photo 2).Thissub-unithas threealarminputs which carrythesignal toacomparator
which compares them to a pre-defined threshold. Should one of these inputs exceed the
alarm threshold, the amplifier is disactivated and a counter is started.
If the fault condition does not dissappear within the period defined by the counter, the unit is
shut down indefinately.
5.4 Tube
The ceramic/metal power triode 3CX1500A7/8877 has been designed to work in AB2
class amplifiers, in class B cathode-driven amplifiers, in audio or RF applications including
the VHF band, or in class C cathode-driven, anode-modulated RF amplifiers.
As linear amplifiers, they feature high power gain with low levels of intermodulation.
For the tube specification, see table C.

VJ1000HP
11 / 40USER MANUAL Rev. 4.0 - 26/02/01
TABLE C
TUBE SPECIFICATIONS
Model: 3CX1500A7/8877
Anode Dissapation: 1500W approx.
Grid dissapation: 25W approx.
Max Frequency: 250 MHz
Cooling System: Forced ventilation
Filament Voltage: 5V
Filament Current: 10.5A
Capacitance with Grounded Cathode
Input: 38.5 pF
Output: 0.1 pF
Input/Output: 10.2 pF
Capacitance with Grounded Grid
Input: 38.5 pF
Output: 10.2 pF
Input/Output: 0.1 pF
Amplification Factor: 200
Transconductance: 55.000 µmhos
Recommended Socket for Gounded
Grid operation: SK2210
Recommended Socket for Grounded
Cathode operation: SK2200
Recommended flue: SK2216
Maximum Anode and Solder Temperature 250°C
Maximum Length: 102.2 mm (4.02")

VJ1000HP
12 / 40 USER MANUALRev. 4.0 - 26/02/01
Maximum Diameter: 85.8 mm (3.38")
Weight: 0.7 Kg (1.6 lbs)
Operational Position: Any

VJ1000HP
13 / 40USER MANUAL Rev. 4.0 - 26/02/01
FRONT PANEL’S VIEW DESCRIPTION (FIG. 1)
1 OUTPUT POWER Analog meter for the measurement of direct
and reflected output power
2 DIR/REF Switchfor the selectionof direct orreflected
power measurment
3 CURRENTS Analogmeterfor themeasurement ofanode
and grid currents
4 GRID/PLATE Switch for the selection of grid or anode
current measurement
5 TUNING Motorized tuning switch
6 LED "-" (87,5) LED toindicate that tuning has reachedend
of range at 87.5 MHZ. OFF signifies end of
range
7 PLATE Anode tuning swich
8 LED "+" (108) LEDto indicatethat tuning hasreached end
of range at 108 MHZ. OFF signifies end of
range
9 LOAD Load matching switch
10 V.S.W.R. Indicator shwing excess V.S.W.R.
11 PRESS. Indicator showing insufficent fan pressure
12 I.G. Alarm indicator for excess grid current
13 H.T. Indicator showing high voltage active
14 ON Power indicator
15 ST.BY. Standby switch
16 POWER Power ON/OFF switch
17 PANNELLO H.T. Internal access to RF chamber
18 RESTART Alarm reset(only inthe version withtelemtry
option)
19 ALARMS CARD ON Alarms card on (only in the version with
telemetry option)

VJ1000HP
14 / 40 USER MANUALRev. 4.0 - 26/02/01
FIG. 1