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evertz S621 Instruction Manual

Vitc generator/translator with source ident
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© Copyright 1989
EVERTZ MICROSYSTEMS LTD.
3465 Mainway, Burlington, Ontario, Canada, L7M 1A9
Phone:
905-335-3700
BBS:
905-335-9131
Internet:
Tech Support: eng@evertz.com
Sales: sales@evertz. com
Revision 1.0, September 1989
The material contained in this manual consists of information that is the property of Evertz Microsystems and is
intended solely for the use of purchasers of Evertz time code equipment. Evertz Microsystems expressly prohibits
the use of this manual for any purpose other than the operation or maintenance of the equipment
All rights reserved. No part of this publication may be reproduced without the express written permission of Evertz
Microsystems Ltd.
Copies of this guide can be ordered from your Evertz products dealer or from Evertz
Microsystems.
MODELS S621, S621-LTR
VITC GENERATOR/TRANSLATOR
WITH SOURCE IDENT
INSTRUCTION MANUAL
Fax:
905-335-3573

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Summary of Contents for evertz S621

  • Page 1 Sales: sales@evertz. com Revision 1.0, September 1989 The material contained in this manual consists of information that is the property of Evertz Microsystems and is intended solely for the use of purchasers of Evertz time code equipment. Evertz Microsystems expressly prohibits the use of this manual for any purpose other than the operation or maintenance of the equipment All rights reserved.
  • Page 3 WARNING Changes or Modifications not expressly approved by Evertz Microsystems Ltd. could void the user’s authority to operate the equipment. Use of unshielded plugs or cables may cause radiation interference. Properly shielded interface cables with the shield connected to the chassis ground of the device must be used.
  • Page 4 EV-BLOC REVISION HISTORY REVISION DESCRIPTION DATE Original issue 9/89...

  • Page 5: Table Of Contents

    EV-BLOC TABLE OF CONTENTS 1. MODEL S621 VITC GENERATOR/TRANSLATOR................1-1 1.1. INSTALLATION ..........................1-1 1.1.1. Power Requirements ......................1-2 1.1.2. Video Input and Output ...................... 1-2 1.1.3. LTC Input and Output ......................1-2 1.1.4. Parallel Remote Control..................... 1-2 1.2. LINE SELECTION ..........................1-2 1.3.
  • Page 6 EV-BLOC This page left intentionally blank TABLE OF CONTENTS...

  • Page 7: Model S621 Vitc Generator/Translator

    1.1. INSTALLATION All connections to the S621 are made on the rear panel. During set-up it may be necessary to remove the module from its enclosure to set up DIP Switches. Each module is held in the chassis by two quarter turn screws to allow for easy removal of the module.

  • Page 8: Power Requirements

    75 ohms at the end of the line. When the S621 senses a stable video input, the µP OK LED will be on. When no video is present, it will be flashing on and off. Program video with VITC inserted on the selected lines is available on two separate outputs.

  • Page 9: Source Identification Encoding

    The two leftmost 8 position DIP switches provide an easy method of presetting unique source identification codes into the user bits. Each 8 position switch is configured as a pair of 4 position switches, each one encoding a bcd value as shown below. MODEL S621 VITC GENERATOR/TRANSLATOR...

  • Page 10: Message Number Switch

    When it is grounded it reverses the setting of the position 1 switch. When the LTC reader option is not fitted, source ID user bits are always inserted. In this case, position 1 switch is used for the generator mode (see section 1.5). MODEL S621 VITC GENERATOR/TRANSLATOR...

  • Page 11: Source Number Switch

    Positions 1 to 4 and 5 to 8 of the centre DIP switch (SW 2) provide BCD encoding for the 10x and 1 x digits of the source number from 00 to 99 respectively. An example of proper switch settings follows. For source identification "VTR 21" set up the switches as shown: MODEL S621 VITC GENERATOR/TRANSLATOR...

  • Page 12: Generator Run Functions

    1.4. GENERATOR RUN FUNCTIONS When the LTC reader option is not fitted, the S621 module may be used as a stand alone VITC generator with source ID. On power up, VITC from the S621 contains only source identification user bits, (i.e. the time bits are all set to zero).

  • Page 13: Technical Description

    1.6.1. Microcontroller (6210-32) At the heart of the S621 reader module is a 8749 microcontroller, (MCU) Its two 8 bit bi-directional ports and 8 bit bus provide peripheral interfacing to the rest of the circuits. Program memory and scratch pad and data RAM are provided internally by the MCU.

  • Page 14: Video Processing (6210-30)

    To calibrate the VITC keyer, connect colour bars from your sync generator to the Video input loop, of the S621, and to channel A of your oscilloscope, and terminate it. Connect the VITC output to channel B of your scope and terminate it.

  • Page 15: Vitc Generator Logic

    U14 pin 10. A series of timing pulses, generated by U10 and U9, are used to properly decode 0 and 1 bits from the incoming code. A constant MODEL S621 VITC GENERATOR/TRANSLATOR...
  • Page 16 1, an extra transition will occur before the ramp exceeds the reference, clocking flip flop U9b on. The LTC data is available at U9 pin 15, and is shifted through sync detector U4 and U6 into one half of shift register U3. MODEL S621 VITC GENERATOR/TRANSLATOR 1-10...

This manual is also suitable for:

S621-ltr

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