R.V.R. Elettronica SDC20 Bedienungsanleitung

Manufactured by R.V.R. Elettronica -Italy

TECHNICAL MANUAL

SDC20

SDC20 Stereo Digital Coder

R.V.R. Elettronica S.r.l. (Bo)Pag. 2

SDC20

STEREO DIGITAL CODER

Technical Manual

SDC20 Stereo Digital Coder

R.V.R. Elettronica S.r.l. (Bo)Pag. 3

INDEX

Preliminary Instructions &Warranty InformationPag. 4

Safety RegulationsPag. 6

SECTION 1

SDC20 Stereo Digital Coder DescriptionPag. 9

Technical Specifications (Table A)Pag.10

Dimensional and Enviromental Specifications (Table B)Pag.11

Front Panel View DescriptionPag.12

Front Panel View (Fig.1)Pag.13

Rear Panel View Description (Version n°1)Pag.14

Rear Panel View (Fig.2)Pag.15

Rear Panel View Description (Version n°2)Pag.16

Rear Panel View (Fig.3)Pag.17

SECTION 2

Electrical DescriptionPag.18

SECTION 3

Installation proceduresPag.19

Top View DescriptionPag.21

Top View (Fig.4)Pag.22

Connectors Specifications (Fig.5)Pag. 23

Balanced Inputs Connection (Fig.6)Pag. 24

APPENDIX A

Circuit Diagram, Bills of Material and LayoutsPag.25

Main CardPag.26

Panel CardPag.35

Limiter Card (Optional)Pag.39

SDC20 Stereo Digital Coder

R.V.R. Elettronica S.r.l. (Bo)Pag. 4

PRELIMINARY INSTRUCTIONS AND WARRANTY INFORMATION

WARNING:This is a"CLASS A" equipment. In aresidential place this

equipment can cause hash. In this case can be requested to user take

necessary measures.

Please observe safety precautions when handling this unit. This equipment

contains dangerous currents and high voltages.

This manual is written as ageneral guide for those having previous

knowledge and experience with this kind of equipment. It is not intended

to contain acomplete statement of all safety warnings which should be

observed by personnel in using this or other elettronic equipment.

R.V.R. doesn't assume responsability 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.

CAUTION: 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.

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. within five (5) days from its

receipt.

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.

All manufacturers warranties will be supported by R.V.R. to ensure

precise and speedy service where possible.

R.V.R. shall not be liable for any damage of whatsoever nature, arising

out of or in connection with the product or its use thereof.

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.

SDC20 Stereo Digital Coder

R.V.R. Elettronica S.r.l. (Bo)Pag. 5

The warranty for aperiod of 12 months is referred to any R.V.R. product,

while for products as Transistors, Mos-Fet and Tubes of the final stages

is applied the manufacture's warranty of these devices.

To claim your rights under this warranty:

a.Contact the dealer or distributor where you prchased 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 aregular authorization with all the necessary

instructions to send back the 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. 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

Be sure to enclose awritten technical report where mention all the

problems found and acopy 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 S.r.l.- Broadcasting Equipment -

Via del Fonditore, 2/2c

Zona Roveri

40138 Bologna - Italy

Telephone +39-51-6010506

Fax +39-51-6011104

R.V.R. reserves the right to modify the design and specifications of the

equipment in this manual without previous notice.

SDC20 Stereo Digital Coder

R.V.R. Elettronica S.r.l. (Bo)Pag. 6

WARNING!

The currents and voltages in this equipment are dangerous!

Personnel must at all times observe safety regulation!

This manual is intended as ageneral guide for trained and qualified

personnel who are aware of the dangers inherent in handling potentially

hazardous electrical and electronic circuits.

It is not intended to contain acomplete statement of all safety

precautions which should be observed by personnel in using this or other

electronic equipment.

The installation, operation, maintenance and service of this equipment

involves risks both to personnel and equipment, and must be performed

only by qualified personnel exercising due care.

R.V.R. ELETTRONICA s.r.l. shall not be responsible for injury or damage

resulting from improper procedures or from the use of improperly trained

or inexperienced personnel performing such tasks.

During installation and operation of this equipment, local building codes

and fire protection standards must be observed.

WARNING!

Always disconnect power before opening covers,

doors, enclosures, gates, panels or shields.

Always use grounding sticks and short out high

voltage points before servicing. never make

internal adjustments, perform maintenance or

service when alone or when fatigued.

Do not remove, short-circuit or tamper with interlock switches on access

covers, doors, enclosures, gates, panels or shields.

Keep away from live circuits, know your equipment and don’t take chances.

WARNING!

In case of emergency ensure that power has been disconnected

SDC20 Stereo Digital Coder

R.V.R. Elettronica S.r.l. (Bo)Pag. 7

TreatmentofelectricalShock

1) If victim is not responsive follow the A-B-C's of basic life support.

PLACE VICTIM FLAT ON HIS BACK ON A HARD SURFACE

AAIRWAYBBREATHING

IF UNCONSCIOUS,IF NOT BREATHING,

OPEN AIRWAYBEGIN ARTIFICIAL

BREATHING

LIFT UP NECK,TILT HEAD,

PUSH FOREHEAD BACK,PINCH NOSTRILS,

CLEAR OUT MOUTH IF NECESSARY,MAKE AIRTIGHT SEAL,

OBSERVE FOR BREATHING.4 QUICK FULL BREATHS.

REMEMBER MOUTH TO MOUTH

RESUSCITATION MUST BE

COMMENCED AS SOON AS

POSSIBLE.

CCIRCULATION

CHECK CAROTID PULSEDEPRESS STERNUM 11/2" TO 2"

IF PULSE ABSENT,APPROX. 80 SEC. : ONE RESCUER, 15 COMPRESSIONS,

BEGIN ARTIFICIAL2 QUICK BREATHS.

CIRCULATION APPROX. 60 SEC. :TWO RESCUERS, 5 COMPRESSIONS,

1BREATH

NOTE: DONOTINTERRUPT RHYTHMOF COMPRESSIONS

WHEN SECOND PERSONIS GIVING BREATH.

Call for medicalassistanceassoonaspossible.

2) If victim is responsive.

a. Keep them warm.

b. Keep them as quiet as possible.

c. Loosen their clothing (a reclining position is recommended).

SDC20 Stereo Digital Coder

R.V.R. Elettronica S.r.l. (Bo)Pag. 8

FIRST-AID

Personnelengagedintheinstallation,operation,maintenanceor

servicingofthisequipmentareurgedtobecomefamiliarwithfirst-aid

theoryandpractices.Thefollowinginformationisnotintendedtobe

acompletefirst-aidprocedure,itisbriefandisonlytobeusedas

areference.Itisthedutyofallpersonnelusingtheequipmenttobe

preparedtogiveadequateEmergencyFirstAidandtherebyprevent

avoidablelossoflife.

TreatmentofelectricalBurns

1) Extensive burned and broken skin.

a. Cover area with clean sheet or cloth.

(Cleanest available cloth article).

b. Do not break blisters, remove tissue, remove adhered particles

ofclothing, or apply any salve or ointment.

c. Treat victim for shock as required.

d. Arrange transportation to ahospital as quickly as possible

e. If arms or legs are affected keep them elevated.

NOTE

If medical help will not be available within an hour and the victim

is conscious and not vomiting, give him aweak 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 4ounces (half aglass) over aperiod

of 15 minutes.

Discontinue fluid if vomiting occurs (Do not give alcohol).

2) Less severe burns - (1st & 2nd degree)

a. Apply cool (not ice cold) compresses using the cleanest available

cloth article.

b. Do not break blisters, remove tissue, remove adhered

particles of clothing, or apply salve or ointment.

c. Apply clean dry dressing if necessary.

d. Treat victim for shock as required.

e. Arrange transportation to a hospital as quickly as possible.

f. If arms or legs are affected keep them elevated.

SDC20 Stereo Digital Coder

R.V.R. Elettronica S.r.l. (Bo)Pag. 9

SECTION1

SDC20 STEREO DIGITAL CODER

DESCRIPTION

1.1EXTERNAL DESCRIPTION

The SDC20 is contained in 19" 1U rack. This stereo digital coder

is engineered for high performance stereo FM broadcasting.

It's an equipment that integrates in acheap model, but without quality

compromises, all technical characteristics of the expansive Coders.

On the front panel there are: the Power ON/OFF luminous switch (8 Fig.1),

the two led bars for left and right channels (1-2 Fig.1) and atrimmer

for phase adjustment (14 Fig.1).

Moreover, there is acommands section with relative led indicators

composed of: a preenphasis command switch (3-9 Fig.1), a left channel

switch (4-10 Fig.1), acommand to put in phase left and right channels

(5-11 Fig.1), aright channel switch (6-12 Fig.1), a19 KHz tone selector

(7-13 Fig.1) and a trimmer for fine tuning of the phase.

On the rear panel there are: the mains voltage inlet (1 Fig.2), a MPX

output connector with its level selector (2-3 Fig.2), aRDS input

connector (4 Fig.2), aSCA input connector (5 Fig.2), aRIGHT input

connector with its level selector (8-9 Fig.2) and aLEFT input connector

with its level selector (6-7 Fig.2).

1.2ELECTRICAL DESCRIPTION

This Stereo Coder uses afrequency sinthesized internal digital

circuitry that allows very linear modulation, high stereo separation,

high input level capability.

The input/output analog section of good quality integrates oneself with

digital system answering for high input dynamics, high signal/noise rate

and very low distorsion.

1.3TECHNICAL SPECIFICATIONS

Refer to Table (A) for electrical specs and to Table (B) for

dimensional and environmental specs.

SDC20 Stereo Digital Coder

R.V.R. Elettronica S.r.l. (Bo)Pag. 10

TABLE A

TECHNICAL SPECIFICATION

AUDIO INPUT (L &R)

Input LevelAdjustable from 0to 12 dB

Input Sensitivity194 mVrms (-12 dBm)

Input Impedance>6Kohm (balanced)

Frequency Responsefrom 20 Hz to 15 KHz

19 KHz Suppression-70 dB

38 KHz Suppression-72 dB

Pre-emphasis50 microsec, 75 microsec, off

SCA INPUT

Input Level0dB

Input Impedance>10 Kohm (unbalanced)

Frequency Response (20 Hz to 100 KHz)<±0.5 dB

RDS INPUT

Input Level0dB

Input Impedance>150 Kohm

Frequency Response (20 Hz to 100 KHz)<±0.5 dB

STEREO GENERATOR

Pilot Tone Frequency19 KHz ±0.1 Hz

Pilot Tone Level-20 dBm (adjustable 2dBm)

Output Impedance (Multiplex)50 Ohm (unbalanced)

Output Level (Multiplex)0dBm to +12 dBm

(with 0dBm, 1KHz input signal)

Separation (20 Hz to 15 KHz)>60 dB

Subcarrier Suppression (38 KHz)>70 dB

THD (1 KHz, output =+12 dBm)<0.03%

Signal/Noise Ratio-80 dB (DIN audio)

Power Requirements117/230 Vac, 50/60 Hz, 8W

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