R.V.R. Elettronica SDC20 Technical Manual Download

Page: 42 / 44

SDC20 Stereo Digital Coder

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

Pag. 42

SDC20 LIMITER CARD

Bill Of Materials

Page 2

Item Quantity

Reference

Part

Description

Part Order Code

________________________________________________________________________________________________

24 1

IC4

NE570

IC 2 COMPANDOR

CILNE570

25 2

C9,C19

N.C.

NOT CONNECTED

Summary of Contents for SDC20

Page 1: ...M a n u f a c t u r e d b y R V R E l e t t r o n i c a I t al y TECHNICAL MANUAL SDC20...

Page 2: ...SDC20 Stereo Digital Coder R V R Elettronica S r l Bo Pag 2 SDC20 STEREO DIGITAL CODER Technical Manual...

Page 3: ...Pag 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 E...

Page 4: ...vers 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...

Page 5: ...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 respons...

Page 6: ...lified 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 per...

Page 7: ...BREATHING 4 QUICK FULL BREATHS REMEMBER MOUTH TO MOUTH RESUSCITATION MUST BE COMMENCED AS SOON AS POSSIBLE C C I R C U L A T I O N CHECK CAROTID PULSE DEPRESS STERNUM 1 1 2 TO 2 IF PULSE ABSENT APPROX...

Page 8: ...d d Arrange transportation to a hospital 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...

Page 9: ...ut in phase left and right channels 5 11 Fig 1 a right channel switch 6 12 Fig 1 a 19 KHz tone selector 7 13 Fig 1 and a trimmer for fine tuning of the phase On the rear panel there are the mains volt...

Page 10: ...el 0 dB Input Impedance 10 Kohm unbalanced Frequency Response 20 Hz to 100 KHz 0 5 dB RDS INPUT Input Level 0 dB Input Impedance 150 Kohm Frequency Response 20 Hz to 100 KHz 0 5 dB STEREO GENERATOR Pi...

Page 11: ...er R V R Elettronica S r l Bo Pag 11 TABLE B DIMENSIONAL AND ENVIRONMENTAL SPECIFICATIONS Operating Temperature 10 C to 50 C Humidity 95 Max Non Condensing Weight 3 2 Kg 7 Lbs Panel Size 483 mm 19 W 4...

Page 12: ...OFFselector 4 L LeftchannelON OFFselector 5 L R L R Channelsphaseselector 6 R RightchannelON OFFselector 7 19KHz 19KHz pilottone selector 8 POWER ON OFFpowerswitch 9 PRE EMPHASISLED Pre emphasisON OF...

Page 13: ...SDC20 Stereo Digital Coder R V R Elettronica S r l Bo Pag 13 FIG 1...

Page 14: ...A C Lineinlet 2 MPX MPXoutputchannelconnector XLR male 3 MPXLEV MPXchannellevelselector 4 RDS RDSinputchannel XLR female 5 SCA SCAinputchannel XLR female 6 LEFT LEFTinputchannel XLR female 7 LEFTLEV...

Page 15: ...SDC20 Stereo Digital Coder R V R Elettronica S r l Bo Pag 15 FIG 2 XLR VERSION...

Page 16: ...N 1 A C IN A C Lineinlet 2 MPX MPXoutputchannelconnector Socket 3 MPXLEV MPXchannellevelselector 4 RDS RDSinputchannel Socket 5 SCA SCAinputchannel Socket 6 LEFT LEFTinputchannel Socket 7 LEFTLEV LEFT...

Page 17: ...SDC20 Stereo Digital Coder R V R Elettronica S r l Bo Pag 17 FIG 3 SOCKET VERSION...

Page 18: ...the bottom in central position 2 Fig 4 The Main card receives input signals LEFT RIGHT RDS and SCA from a Mixer or a transmitter These signals are amplified and filtered through 19KHz filters and pre...

Page 19: ...of the FM station However it s possible to obtain max performance for each transmitting system adjust again on pilot tone phase to compensate possible FM transmitter phase delays So that this adjustme...

Page 20: ...er the tuner used for the adjustments can be of good quality the performances as separation of this equipment and of all transmitting system improbably can be compared with SDC20 ones therefore the re...

Page 21: ...SDC20 Stereo Digital Coder R V R Elettronica S r l Bo Pag 21 TOP VIEW DESCRIPTION FIG 4 1 Panelcard 2 Maincard 3 Powerswitch 4 Mainsvoltageinlet 5 Mainsvoltagetransformer 6 Voltage switch 117 V 230 V...

Page 22: ...SDC20 Stereo Digital Coder R V R Elettronica S r l Bo Pag 22 TOP VIEW FIG 4...

Page 23: ...ca S r l Bo Pag 23 C L R INPUTS 1 Ground 2 Inphase 3 Return With unbalanced signals ground terminal Return 3 connecting to terminal Ground 1 MPX OUTPUT 1 Ground 2 Output 3 Ground RDS SCA INPUTS 1 Grou...

Page 24: ...ect the braide wire on connectors both of right channel and left channel of the XLR cable end connected on Stereo Coder 1st Case If this hum noise is still present repeat the same operation on the con...

Page 25: ...composing the equipment For more information about each module see as reference Section 2 APPENDICE A SCHEMI E L E T T R I C I P I A N ID IM O N T A G G I OEL I S T EC O M P O N E N T I Questo capitol...

Page 26: ...R V R Elettronica S r l Bo Pag 26 MAIN CARD A Circuit Diagram Sheet 1 of 2 Pag 27 B Bill of Materials Sheet 1 of 2 Pag 28 C Circuit Diagram Sheet 2 of 2 Pag 30 D Bill of Materials Sheet 2 of 2 Pag 31...

Page 27: ...SDC20 Stereo Digital Coder R V R Elettronica S r l Bo Pag 27...

Page 28: ...FK30 1 R22 R23 8 2 R5 R19 33K RESISTOR 1 4W 5 RSC1 4JK0033 9 2 P1 P2 POT50KX2 DOUBLE POTENT 50K RVP0650K 10 4 C1 C3 470PF CERAMIC CAPACITOR CKM471BK600P C7 C9 11 2 C5 C11 2N2F 1 CERAMIC CAPACITOR CKM2...

Page 29: ...S 4 CONT MORSKB04PPO 26 2 J7 J8 MORS CS 6 MORS C S 6 CONT MORSKB06PPO 27 5 SW1C SW1B COM P4V 2P COMM A PULS 4V 2P CMMPULS4V2P SW3B SW4C SW4B 28 1 PD1 WL04 DIODE BRIDGE 1 5A PNRWL04 29 1 IC18 LM7815 PO...

Page 30: ...SDC20 Stereo Digital Coder R V R Elettronica S r l Bo Pag 30...

Page 31: ...1 RSM1 4FK5 11 10 5 R31 R35 10K 1 RESISTOR 1 4W 1 RSM1 4FK0010 R52 R63 R64 11 1 R56 10K RESISTOR 1 4W 5 RSC1 4JK0010 12 1 R40 12K7 1 RESISTOR 1 4W 1 RSM1 4FK12 7 13 2 R38 R77 15K RESISTOR 1 4W 5 RSC1...

Page 32: ...C23 470PF CERAMIC CAPACITOR CKM471BK600P 36 3 C17 C22 1NF 1 CERAMIC CAPACITOR CKM102BF63 C27 37 1 C16 1N5F 1 CERAMIC CAPACITOR CKM152BF63 38 1 C26 2N7F 1 CERAMIC CAPACITOR CKM272BF63 39 1 C25 100NF C...

Page 33: ...____________________________________________________________________ 52 1 IC14 LF347N QUAD JFET IN OP AMP CILLF347N 53 1 IC9 LF353 DOUBLE OP AMP CILLF353 54 3 IC5 IC6 LF356 JPFET IN OP AMPLIFIER CILLF...

Page 34: ...SDC20 Stereo Digital Coder R V R Elettronica S r l Bo Pag 34...

Page 35: ...SDC20 Stereo Digital Coder R V R Elettronica S r l Bo Pag 35 PANEL CARD A Circuit Diagram Pag 35 B Bill of Materials Pag 37 C Component Layout Pag 38...

Page 36: ...SDC20 Stereo Digital Coder R V R Elettronica S r l Bo Pag 36...

Page 37: ...1 4W 5 RSC1 4JM02 2 6 2 P1 P2 HC50K TRIMM REG OR CERMET RVTCEROK0050 7 4 C2 C3 C4 C5 2 2 F ELECTROLYTIC CAPACITOR CEA225AM630 8 1 C1 10 F ELECTROLYTIC CAPACITOR CEA106AM350 9 1 J1 4 PIN STRIP STRIP M...

Page 38: ...SDC20 Stereo Digital Coder R V R Elettronica S r l Bo Pag 38...

Page 39: ...SDC20 Stereo Digital Coder R V R Elettronica S r l Bo Pag 39 LIMITER CARD OPTIONAL A Circuit Diagram Pag 40 B Bill of Materials Pag 41 C Component Layout Pag 42...

Page 40: ...SDC20 Stereo Digital Coder R V R Elettronica S r l Bo Pag 40...

Page 41: ...W 1 RSM1 4FK0020 R23 R32 9 8 R1 R12 47K RESISTOR 1 4W 5 RSC1 4JK0047 R15 R16 R19 R30 R33 R34 10 2 R13 R31 64K9 1 RESISTOR 1 4W 1 RSM1 4FK64 9 11 2 R11 R29 1M RESISTOR 1 4W 5 RSC1 4JM0001 12 2 P1 P2 TC...

Page 42: ...20 LIMITER CARD Bill Of Materials Page 2 Item Quantity Reference Part Description Part Order Code ________________________________________________________________________________________________ 24 1...

Page 43: ...SDC20 Stereo Digital Coder R V R Elettronica S r l Bo Pag 43...

Page 44: ...und in Italy All rights reserved No part of this manual may be reproduced or utilized in any form or by any means electronic or mechanical including photocopying recording or by any information storag...

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