evertz S622 User manual

Model S622, S622-VCG
VITC Reader
INSTRUCTION MANUAL
© Copyright 1986
EVERTZ MICROSYSTEMS LTD.
5288 John Lucas Drive
Burlington, Ontario, Canada, L7L 5Z9
Phone: [phone]
Fax: [phone]
Internet: Tech Support: [email protected]
Sales: [email protected]
Web Page: www.evertz.com
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.

INFORMATION TO USERS IN EUROPE
NOTE
CISPR 22 CLASS A DIGITAL DEVICE OR PERIPHERAL
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to the European Union EMC directive. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation
of this equipment in a residential area is likely to cause harmful interference in which
case the user will be required to correct the interference at his own expense.
INFORMATION TO USERS IN THE U.S.A.
NOTE
FCC CLASS A DIGITAL DEVICE OR PERIPHERAL
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the
user will be required to correct the interference at his own expense.
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.

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REVISION HISTORY
REVISION DESCRIPTION DATE
2.1 Original issue 01/86

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TABLE OF CONTENTS
1. 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. Character Position ................................................................................................................ 1-5
1.3.2. Background Selection ........................................................................................................... 1-5
1.3.3. Drop Frame Indication (NTSC units only) ............................................................................. 1-5
1.3.4. Field Indication...................................................................................................................... 1-5
1.3.5. Time/User Bits Display..........................................................................................................1-5
1.3.6. Source Identification ............................................................................................................. 1-5
1.3.7. Freeze Remote Control Input ............................................................................................... 1-5
1.4. PARALLEL OUTPUTS .................................................................................................................... 1-6
1.4.1. BCD Time/User Bit Output.................................................................................................... 1-6
1.4.2. Remote Control Switch Outputs............................................................................................ 1-7
1.5. TECHNICAL DESCRIPTION ...........................................................................................................1-7
1.5.1. Microcontroller (6220-30)...................................................................................................... 1-8
1.5.2. Sync Separator (6220-31) .................................................................................................... 1-8
1.5.3. VITC Reader (6220-31) ........................................................................................................ 1-8
1.5.4. Video Character Generator (6221-30) .................................................................................. 1-9
2. 4600T INSTALLATION ........................................................................................................................ 2-1
2.1. REAR PANEL .................................................................................................................................. 2-1
2.2. INSIDE THE 4600T:REMOVING THE FRONT PANEL................................................................... 2-1
2.3. MOUNTING ...................................................................................................................................... 2-2
2.3.1. Selecting the Correct Mains Voltage..................................................................................... 2-2
Figures:
Figure 1-1: Model 622 Block Diagram......................................................................................................... 1-1
Figure 1-2: BCD Output Waveforms ........................................................................................................... 1-7
Drawings: DWG. #
6031/6051 Rear Panels............................................................................................................... M6000-58RL
603-6031 I/O Modules................................................................................................................... S-6030-30A
6031 I/O Module Power Supply.........................................................................................................6031-31A
6220 VITC Reader Main Schematic................................................................................................. 6220-30H
TABLE OF CONTENTS i

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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 ................................................................................................................... 6221-80J
TABLE OF CONTENTS ii

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1. 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. If the VTR is bumped in and out of sync by
an editor or synchronizer, the translated LTC framing follows gradually without
missing a beat. The 622 reader contains all the necessary video processing
circuits and therefore requires no external signals other than the video signal
containing the VITC.
The 622 module has several reading modes. The first valid line of code
encountered in each field will be processed in the 'AUTO' mode. This mode,
invoked automatically when the optional VCG is not installed, ensures smooth
reader operation from still frame to about 20 times play speed. The use of a
time base corrector will extend the recovery range. Two further modes,
available when the VCG option is installed, permit selective reading of one
VITC line pair, when several sets of VITC data are present.
Figure 1-1: Model 622 Block Diagram
An optional video character inserter allows this unit to be used as a direct
display reader. A broadcast quality keyer inserts white high resolution
characters with a black background into the program video. Character size and
raster position are switch selectable.
MODEL 622 1-1

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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" for a camera (ie. CAM 1), on air status (ON AIR
blinking), or source ID plus timecode for a time coded source (ie. VTR 3).
Six Buffered outputs are provided for either multiplexed parallel BCD data
outputs, or grounding solid state switches used for remote machine control
applications. A two position front panel switch aids in selection of the various
operational modes such as VCG display characteristics, function of parallel
outputs, VITC line select, etc. Formatted modes are retained in non-volatile
memory even when power is removed.
1.1. INSTALLATION
All connections to the 622 VITC Reader are made using the Model 603-RD
Parallel I/O module. Refer to section 2.2 for instructions on fitting the 622 and
I/O modules into the rack frame.
1.1.1. Video Input and Output
The reader video with VITC recorded on it is connected to the VIDEO IN loop.
The internal sync separator has a high impedance input tapped off the loop
through, therefore, the input must be terminated with 75 ohms at the end of the
line. The input video is also used as a reference for phasing of the LTC
translator output and as an input to the optional character inserter. When video
is present at the reader input the µP OK LED will be on. When no video is
present, it will be flashing on and off. When VITC is being read from the input
video, the VITC LED will also be on.
Program video with characters inserted is available on two separate outputs.
1.1.2. LTC Translator Output
A 1/4" stereo phone jack is provided as an output from the LTC translator. This
output is play speed regenerated code from the VITC being read. When the
incoming code is at normal play speed, the output code is properly
synchronized to the input video. When there is no incoming VITC, the LTC
output disappears.
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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:
Pin Name Description
5 FRZ Freeze time display input
9 RCT/DAT remote ctl/data select input
4 OP5/STB Address/data strobe/bit 5
8 OP6/CTS Clear to send / output bit 6
3 OP3 Data output bit 3
7 OP4 Data output bit 4
2 OP1 Data output bit 1
6 GND Ground
1 OP2 Data output bit 2
1.2. FORMAT FUNCTIONS
A two position toggle switch mounted on the front panel is used in conjunction
with the optional video character inserter to configure the following operational
modes. Each time the switch is pressed to the MODE position, the next mode
to be formatted is selected, and an appropriate message is displayed in the top
left corner of the VCG display. If you want to change that mode, press the
switch to the SELECT position to cycle through the possible configurations.
When the desired selection is displayed, release the switch to the centre
position. The next mode may be selected by pressing the switch to the MODE
position, etc. After 5 seconds with no switch action, the format display is turned
off, and the selections are stored in a non-volatile memory, for recall after a
power failure. The format modes are listed below in the order they occur.
When the optional VCG is not installed, the Model 622 uses AUTO reading mode. The
RCTL/DATA remote control input selects the DATA/RCTL mode.
"
DSPLY Pressing SELECT changes the display format of the VCG display to
show time, user bits (source ID or numeric), time and user bits, or
no VCG display. In the absence of incoming VITC, the VCG display
may be blanked (see VCG MODE below). Display mode selection
should be done with a valid VITC input. When Source ID user bits
are being read without running time code numbers, the time digits
will not be displayed.
SIZE Pressing SELECT alternates between one of two VCG sizes.
VCG MODE Pressing SELECT alternates between one of two modes for the
VCG display.
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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.
READ MODE One of three reading modes will be selected. When AUTO is
displayed, the first valid line of VITC encountered in each field will
be read.
When two line numbers are displayed, (ie. 12 14), only VITC
recorded on the displayed lines will be read.
When two line numbers separated by an arrow are displayed,
(ie. 12>14), then the first valid line of VITC encountered in the range
of lines selected will be read.
Selection of individual lines or a range of lines can only be used when the incoming
video with VITC is at play speed, or is time base corrected. If no VITC exists on the
selected lines, the 622 reader will turn the VITC IN indicator off and blank the character
display if the BLANK VCG mode is selected. If the SHOW VCG mode is selected, the last
valid time read will be displayed.
"
LINE1 Two line numbers will be displayed, with the leftmost one blinking.
Pressing SELECT will advance the blinking number. When the last
permitted line is reached, the number will return to the lowest
permitted number. Valid numbers are 10 to 20 for NTSC, and 6 to
21 for PAL.
LINE2 Two line numbers will be displayed, with the rightmost one blinking.
Line selection is accomplished as for LINE1 above.
OUTPUT One of two modes for the parallel outputs will be selected. When
DATA is displayed, the reader data is output as described in section
1.4.1. When RCTL is displayed, the outputs operate as remote
control switches as described in section 1.4.2.
1.3. CHARACTER GENERATOR FUNCTIONS
When fitted with the optional VCG sub module, the Model 622 VITC reader
provides a display of time or user bit information as characters keyed into the
program video.
MODEL 622 1-4