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evertz S622 Instruction Manual

Vitc reader
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© Copyright 1986
EVERTZ MICROSYSTEMS LTD.
5288 John Lucas Drive
Burlington, Ontario, Canada, L7L 5Z9
Phone:
905-335-3700
Fax:
905-335-3573
Internet:
Tech Support: eng@evertz.com
Sales:
Web Page:
Written by Alan Lambshead
Revision 2.1, January 1986
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 EV-BLOC systems. Evertz Microsystems expressly prohibits the use
of this manual for any purpose other than the operation or maintenance of the EV-BLOC system.
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.
Model S622, S622-VCG
VITC Reader
INSTRUCTION MANUAL
sales@evertz.com
www.evertz.com

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Summary of Contents for evertz S622

  • Page 1 Written by Alan Lambshead Revision 2.1, January 1986 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 EV-BLOC systems. Evertz Microsystems expressly prohibits the use of this manual for any purpose other than the operation or maintenance of the EV-BLOC system.
  • Page 2 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 3 EV-BLOC REVISION HISTORY REVISION DESCRIPTION DATE Original issue 01/86...
  • Page 4 EV-BLOC This page left intentionally blank...

  • Page 5: Table Of Contents

    EV-BLOC TABLE OF CONTENTS MODEL 622 VITC READER/TRANSLATOR ..................1-1 1.1. INSTALLATION ..........................1-2 1.1.1. Video Input and Output ......................1-2 1.1.2. LTC Translator Output ......................1-2 1.1.3. CTL/DATA Pin Assignments....................1-3 1.2. FORMAT FUNCTIONS ........................1-3 1.3. CHARACTER GENERATOR FUNCTIONS ..................1-4 1.3.1.
  • Page 6 EV-BLOC 6220 VITC Reader Circuit ........................ 6220-31H 622/6221 Component Layout ......................622-81H 6221 VCG Submodule Video Input/Output ..................6221-31J 6221 VCG Submodule Connector Interface..................6221-32J 6221 VCG Submodule Character Ram and Prom ................6221-33J 6221 VCG Submodule Timing Components ..................6221-34J 6221 Component Layout ........................

  • Page 7: Model 622 Vitc Reader/Translator

    EV-BLOC MODEL 622 VITC READER/TRANSLATOR The 622 module is a vertical interval time code reader and longitudinal time code generator in one slim euro-card package containing features not found anywhere else. When used as a translator from VITC to LTC, a unique soft locking scheme assures error free play speed code regardless of speed variations of the code being read.

  • Page 8: Installation

    EV-BLOC Another application is source identification. A look-up table is used to decode a special code (placed in the user bits of the VITC by a 621 encoder or other VITC generator) and display source ID messages using the optional VCG. The ID code may be “source only"...

  • Page 9: Ctl/Data Pin Assignments

    EV-BLOC 1.1.3. CTL/DATA Pin Assignments A nine pin subminiature 'D' connector is provided on the Model 603 Parallel I/O module, for remote control of the reader functions and BCD data/remote control outputs from the reader. The inputs are activated by a connection to ground. The pin connections are described below: Name Description...

  • Page 10: Character Generator Functions

    EV-BLOC When BLANK is displayed, the character display is blanked when there is no incoming VITC on the lines it is programmed to read. When SHOW is displayed, the character display shows the last value read after VITC is removed from the programmed lines. When code is present, the VITC data is displayed according to the formatted DSPLY mode.

  • Page 11: Character Position

    EV-BLOC 1.3.1. Character Position The position of the reader display is selected by a 16 position rotary switch located on the side of the module. A small screwdriver can be used to position the characters to one of 15 positions on the screen. Selecting position 0 turns the characters off.

  • Page 12: Parallel Outputs

    EV-BLOC 1.4. PARALLEL OUTPUTS Six transistor switches brought out to the 9 pin CTL/DATA connector are configured to operate in one of two modes. When the optional VCG is installed, the use of these outputs is configured using the mode select switch. (see section 1.2) When the VCG is not installed, the CTL/DATA remote control input on the 9 pin connector selects DATA when grounded and RCTL when left open.

  • Page 13: Remote Control Switch Outputs

    EV-BLOC Figure 1-2: BCD Output Waveforms 1.4.2. Remote Control Switch Outputs When the RCTL mode is formatted, the six parallel outputs are configured as open collector transistor switch outputs. When source ID user bits are being received, the 'hours' user bits, (binary groups 7 & 8), will be used to control the remote control switch outputs.

  • Page 14: Microcontroller (6220-30)

    EV-BLOC 1.5.1. Microcontroller (6220-30) At the heart of the 622 reader module is an 8749 microcontroller, (MCU) U21. 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 15: Video Character Generator (6221-30)

    EV-BLOC Inverted VITC data is shifted into U11 which calculates the cyclic redundancy check (CRC) word for the recovered data. Valid CRC and 90 bits of code, detected by U9, clocks U6a on, disabling the VITC clock and generating a VITC RDY signal to the MCU.
  • Page 16 EV-BLOC This page left intentionally blank MODEL 622 1-10...

  • Page 17: 4600T Installation

    EV-BLOC 4600T INSTALLATION 2.1. REAR PANEL The following connectors are provided on the rear panel for connection into your system. Each slot has the same configuration for its respective module. Timecode Connectors LTC OUT:A ¼"stereo phone jack for output of SMPTE/EBU longitudinal time code from generator.

  • Page 18: Mounting

    EV-BLOC The module in the center is the LTC/VITC reader/character inserter for time code, and the one on the right is the LTC/VITC reader/character inserter for Keykode. To replace the front panel assembly, slide it into place, and turn the quick release fasteners clockwise until they are firmly secured.
  • Page 30 This page left intentionally blank...

This manual is also suitable for:

S622-vcg

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