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evertz 8025 Instruction Manual

Digital video keyer
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© Copyright 1993, 1994, 1995
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
Web Page:
Revision 1.4, Feb. 1995
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 the 8025 Digital Video Keyer. Evertz Microsystems expressly
prohibits the use of this manual for any purpose other than the operation of the 8025.
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.
Digital Video Keyer
Instruction Manual
Fax:
http://www.evertz.com
Model 8025
905-335-3573

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Summary of Contents for evertz 8025

  • Page 1 Revision 1.4, Feb. 1995 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 the 8025 Digital Video Keyer. Evertz Microsystems expressly prohibits the use of this manual for any purpose other than the operation of the 8025.
  • 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 Model 8025 Digital Video Keyer Manual REVISION HISTORY REVISION DESCRIPTION DATE Original issue - preliminary release Sept. 93 Revised to add 4Fsc support Dec. 93 Installations drawings revised May 94 Updated for Version B units Sept 94 Technical Description chapter added Feb.

  • Page 4: Table Of Contents

    2.6.1. Connecting the 4025 and 8025 for Digital VITC Keying ..........2-7 2.6.2. Connecting the 4025 and 8025 for Digital and Analog VITC Keying ......2-9 HOW TO OPERATE DIGITAL VIDEO KEYER................3-1 3.1. AN OVERVIEW OF KEY AND DISPLAY FUNCTIONS.............. 3-1 3.1.1.
  • Page 5 Serial Video Output Schematic..................8025-34F Digital Video LCA Schematic..................... 8025-35F Microprocessor And Eprom Schematic ................8025-36F Monitor Submodule Header, Tri Oscillator And Control Inputs Schematic ....... 8025-37F Power Supply Dip Switch And Display Header Schematic..........8025-38F Clock Buffer And Phase Restorer Schematic ..............8025-39F Main Board Component Layout ..................
  • Page 6 Model 8025 Digital Video Keyer Manual Bottom Component Layout ....................8029-81B Power Supply Schematic....................8102-31A Power Supply Component Layout ..................8102-80A Parts Lists .........................Parts List # 8025 Main Board ......................BAM8025DK 5220 Display Board .......................BAM5220DS Video Encoder 8025, 8070 Submodule................. BAS8029VE 8102 Power Supply .......................BAM8102PS...
  • Page 7 Model 8025 Digital Video Keyer Manual This page left intentionally blank TABLE OF CONTENTS Page iv...

  • Page 8: Overview

    This manual is organized into 4 chapters : Overview, Installation, and Operation, Technical Description. 4025 If you are currently an owner of the Evertz 4025 Film Footage Encoder, you will find special information on connecting your digital keyer to the 4025 marked with the following symbol in the margin.

  • Page 9: Definitions

    Model 8025 Digital Video Keyer Manual 1.2. DEFINITIONS AES (Audio Engineering Society): A professional organization that recommends standards for the audio industries. AES/EBU: Informal name for a digital audio standard established jointly by the Audio Engineering Society and the European Broadcasting Union organizations.
  • Page 10 Model 8025 Digital Video Keyer Manual characteristics for both Y, B-Y, R-Y and RGB component digital television signals. CCIR-656 The physical parallel and serial interconnect scheme for CCIR-601. CCIR-656 defines the parallel connector pinouts as well as the blanking, sync and multiplexing schemes used in both parallel and serial interfaces.
  • Page 11 Model 8025 Digital Video Keyer Manual EBU Tech 3246-E standard which was in turn derived from CCIR-601. EMBEDDED AUDIO: Digital audio is multiplexed onto a serial digital video data stream. PIXEL: The smallest distinguishable and resolvable area in a video image.
  • Page 12 Model 8025 Digital Video Keyer Manual 4Fsc Four times subcarrier sampling rate uses in composite digital systems. In NTSC this is 14.3 MHz. In PAL this is 17.7 MHz. OVERVIEW Page 1-5...
  • Page 13 Model 8025 Digital Video Keyer Manual This page left intentionally blank OVERVIEW Page 1-6...

  • Page 14: Installation

    The following sections describe the purpose of the rear panel connectors of the 8025. Sections 2.1.1 to 2.1.6 describe the specific signals that should be connected to the 8025. Figure 2-6 to Figure 2-9 give sample connection diagrams for connecting the 8025 Digital Video Keyer to your 4025 Film Footage Encoder.

  • Page 15: Digital Video Output Connections

    Model 8025 Digital Video Keyer Manual 2.1.2. Digital Video Output Connections MONITOR VIDEO DIGITAL OUT SERIAL PARALLEL Figure 2-3: Digital Video Output Rear Panel Connections Both the serial and parallel outputs contain the selected input video with data keyed in by Keyer 2. The serial digital video output is optional and may not be fitted on your unit.

  • Page 16: Analog Monitor Connections

    Model 8025 Digital Video Keyer Manual On 8025 units with an 8 digit display there was a labeling error on the rear panel connections. The actual functions of the CTL and Fill connectors are reversed. The FILL2 connector is actually the one labelled CTL 2 and the CTL 2 connector is actually the one labeled FILL 2.

  • Page 17: Mounting

    2.2. MOUNTING The 8025 Digital Video Keyer is equipped with a rack mounting tray and fits into a standard 19 inch by 1 3/4 inch (483 mm x 45 mm) rack space. The 8025 may be removed from the rack mounting tray if rack mounting is not desired.

  • Page 18: Connecting The Digital Video

    PARALLEL or SERIAL input is accomplished on the front panel, if the serial input option is installed. The 8025 may be configured to accept either 525 or 625 digital video in either component (4:2:2) or composite (4Fsc) format. Selection of the correct video type is accomplished using the front panel menu system.

  • Page 19: Connecting The Keyer Controls

    When the KEY CTL signal is active (low) the 8025 samples the KEY FILL signal at each digital clock and keys in a digital black value if the KEY FILL is low and a digital white value if the Key FILL is high.

  • Page 20: Connecting The 8025 To A 4025 Film Footage Encoder

    4025 and terminate it. Connect KEY CTL 2 of the 8025 to the 4025's VITC OUT B and KEY FILL 2 of the 8025 to the 4025 VITC OUT A. The 8025 must be set up to use TTL level input levels for the KEY controls.

  • Page 21: Figure 2-6: Connections To A 4025 Film Footage Encoder For Digital Vitc Keying (Version A With 8 Digit Display)

    Model 8025 Digital Video Keyer Manual TELECINE EVERTZ MODEL 5500 KEY CODE READER FROM KEYKODE HEAD COMPUTER KEY CODE READER KJ123456 2345+00 model 5500 12:34:56:00 MONITOR 3/4" VTR COMPOSITE FRAME ANALOG BIPHASE POLSE +VITC +CHAR 1" MASTER VTR CHAR. GEN...

  • Page 22: Connecting The 4025 And 8025 For Digital And Analog Vitc Keying

    4025 are in time with each other. In this mode, the 4025 act as an analog keyer and the 8025 keyer extracts the VITC from the analog video and keys it into the digital bitstream. The...

  • Page 23: Figure 2-8: Connections To A 4025 For Digital And Analog Vitc Keying (Version A With 8 Digit Display)

    Connect the program video to the GEN VIDEO IN of the 4025 and terminate it. Connect KEY CTL 2 of the 8025 to the 4025's VITC OUT B and terminate the KEY FILL 2 of the 8025. The 8025 must be set up to use Video level input levels for the KEY controls.

  • Page 24: Figure 2-9: Connections To A 4025 For Digital And Analog Vitc Keying (Version B With 12 Digit Display)

    Model 8025 Digital Video Keyer Manual TELECINE EVERTZ MODEL 5500 KEY CODE READER FROM KEYKODE HEAD COMPUTER KEY CODE READER KJ123456 2345+00 model 5500 12:34:56:00 MONITOR COMPONENT VIDEO ANALOG OR DIGITAL 4:2:2 3/4" VTR COMPOSITE ENCODER (See Note) COMPOSITE FRAME...
  • Page 25 Model 8025 Digital Video Keyer Manual This page left intentionally blank INSTALLATION Page 2-12...

  • Page 26: How To Operate Digital Video Keyer

    SHIFT Figure 3-2: Version B Front Panel Layout There are two different versions of 8025 hardware. Version A has an 8 digit display located on the right hand side of the gray front panel. Version B has an 12 digit display located in the middle of the black front panel.

  • Page 27: The Setup Pushbutton Group

    Engineering Setup Mode provides additional configuration items which should only be used by qualified engineering personnel. The 8025 will automatically return to the operating mode if no key presses are made for several seconds. When in either of the Setup modes, the $ & % arrow keys are used to move up or down the main items in the menu system.

  • Page 28: An Overview Of The Status Indicators

    3.1.3. An Overview of the Status Indicators There are 8 status indicators located on the front panel that show operational status of the 8025 at a glance. Indicates that the video input is from the serial input. If it is blinking, it indicates that the Serial video input is selected, but a valid digital video signal is not present.

  • Page 29: An Overview Of The Front Panel Programming Menu

    Model 8025 Digital Video Keyer Manual 3.1.5. An Overview of the Front Panel Programming Menu The key to the operational flexibility of the 8025 Digital Video Keyer lies in the front panel programming menu system. The programming menu system uses the 8 digit alphanumeric display and provides a quick, intuitive method of configuring 8025 Digital Video Keyer, guiding you to the correct setup for your application.

  • Page 30: Programming The 8025 Operational Modes

    PROGRAMMING THE 8025 OPERATIONAL MODES The front panel menu is used to configure the basic operational modes of the 8025 Digital Video Keyer such as selecting which video input will be used, what type of video is present, etc. VIDEO TYPE Is used to program the 8025 for the digital video format.
  • Page 31 4025 If you are using the 8025 in conjunction with a 4025 the following settings should be used. If the 4025 is set for digital mode, use TTL levels. If the 4025 is set for analogue mode, use the Video levels.
  • Page 32 Model 8025 Digital Video Keyer Manual Select Lvl ttl if you are using TTL level signals for Key CTL and Key Fill. Select Lvl video if you are using Video level signals for Key CTL and Key Fill. OPERATION Page 3-7...
  • Page 33 Model 8025 Digital Video Keyer Manual This page left intentionally blank OPERATION Page 3-8...

  • Page 34: Technical Description

    4.2.1. DIP Switch Functions The main circuit board of the model 8025 contains an 8 position DIP switch which is used to invoke various diagnostic and calibrations functions. The functions of each switch are described below.

  • Page 35: Jumper Functions - Main Board

    Analog Composite Monitor (optional) The microcontroller, serial and parallel video inputs and outputs, and keyer LCA circuits are all contained on the main circuit card (8025). The display and keypad circuitry is contained on a separate circuit board (5220) which plugs into the main board via a twenty conductor ribbon cable.

  • Page 36: Microcontroller (8025-36)

    Model 8025 Digital Video Keyer Manual 4.3.1. Microcontroller (8025-36) At the heart of the model 8025 keyer is an 8032 microcontroller, (MCU) U19. Its three 8 bit bi-directional ports and 8 bit bus provide peripheral interfacing to the rest of the circuits. Program memory is contained on EPROM U21.

  • Page 37: Parallel Digital Video Input And Output (8025-31)

    SMPTE 125 ECL level clock and data signals to TTL compatible levels used throughout the rest of the 8025. These TTL level signals are fed to the A inputs of input multiplexes U7, U8, and U9. To conserve power the ECL to TTL translators are powered by relays PRLY1 and PRLY2 only when the parallel inputs are selected (using the setup menus).

  • Page 38: Serial Digital Video Output (8025-34)

    9005 is set by trim pots VR2 for 270 MHz, VR1 for 143 MHz, and VR3 for 173 MHz. The 8025 works only in the 270 MHz component format so only VR2 is relevant. The capture range can be adjusted with the following procedure.

  • Page 39: Analog Composite Monitor (8026-31, 8026-32)

    To adjust the video level of the analog output, connect a test pattern source (e.g. colour bars) to the digital video input of the 8025. Adjust the GAIN trimpot (VR1) so that the output amplitude of the colour bar signal is 1 volt p-p.

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