evertz 9540 User manual

Model 9540
and
Model 9542
Video Delay Processor
Instruction Manual
© Copyright 1999, 2001
EVERTZ MICROSYSTEMS LTD.
5288 John Lucas Drive,
Burlington, Ontario, Canada,
L7L 5Z9
Phone: [phone]
Sales Fax: [phone]
Support Fax: [phone]
Internet: Sales: [email protected]
Tech Support: [email protected]
Web Page: http://www.evertz.com
Revision 1.2 May 2001
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 9540 Video Delay Processor. Evertz Microsystems expressly
prohibits the use of this manual for any purpose other than the operation of the Video Delay Processor.
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.

Model 9540 Video Delay Processor Manual
REVISION HISTORY
REVISION DESCRIPTION DATE
1.0 Original Version Oct 99
1.1 Chapter 3 Operation has been updated Nov 99
1.0-1 Change Sheet inserted Nov 99
1.2 Added features for Model 9542 May 01

Model 9540 Video Delay Processor Manual
TABLE OF CONTENTS
1. OVERVIEW......................................................................................................................................1-1
1.1. HOW TO USE THIS MANUAL........................................................................................................1-2
2. INSTALLATION...............................................................................................................................2-1
2.1. REAR PANEL..................................................................................................................................2-1
2.1.1. Digital Video Connections....................................................................................................2-1
2.1.2. Remote Control Connections...............................................................................................2-1
2.1.3. Power Connections..............................................................................................................2-2
2.2. MOUNTING .....................................................................................................................................2-2
2.3. POWER REQUIREMENTS .............................................................................................................2-2
2.3.1. Selecting the Correct Mains Voltage....................................................................................2-2
2.3.2. Changing the Fuse...............................................................................................................2-3
2.4. CONNECTING THE DIGITAL VIDEO.............................................................................................2-3
2.4.1. Video Input and Output........................................................................................................2-3
2.5. CONNECTING THE GENERAL PURPOSE INPUTS AND OUTPUTS ..........................................2-3
3. HOW TO OPERATE THE VIDEO DELAY PROCESSOR ..............................................................3-1
3.1. AN OVERVIEW OF THE KEY AND DISPLAY FUNCTIONS..........................................................3-1
3.1.1. The Setup Button Group......................................................................................................3-1
3.1.2. The Preset Button Group.....................................................................................................3-1
3.1.3. The Auxiliary Button Group..................................................................................................3-2
3.1.4. Status Indicators ..................................................................................................................3-2
3.1.5. Front Panel Display Messages ............................................................................................3-3
3.2. FRONT PANEL SETUP MENU.......................................................................................................3-3
3.2.1. Setting the Video Delay........................................................................................................3-5
3.2.2. Choosing Which lines in the Vertical Blanking interval will be Blanked ...............................3-7
3.2.3. Upgrading the Firmware in the Video Delay Processor.......................................................3-7
3.3. LOADING THE FACTORY DEFAULTS..........................................................................................3-8
3.4. WORKING WITH THE USER PRESETS........................................................................................3-8
3.4.1. Saving User Presets ............................................................................................................3-8
3.4.2. Recalling User Presets.........................................................................................................3-8
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Model 9540 Video Delay Processor Manual
4. TECHNICAL DESCRIPTION.......................................................................................................... 4-1
4.1. SPECIFICATIONS.......................................................................................................................... 4-1
4.1.1. Serial Video Input.................................................................................................................4-1
4.1.2. Serial Video Outputs............................................................................................................4-1
4.1.3. Electrical...............................................................................................................................4-1
4.1.4. Functional.............................................................................................................................4-1
4.2. UPDATING THE FIRMWARE IN THE VIDEO DELAY PROCESSOR .......................................... 4-2
4.2.1. Requirements.......................................................................................................................4-2
4.2.2. Update Procedure................................................................................................................4-2
4.2.2.1. Part I – Terminal program Setup.............................................................................4-2
4.2.2.2. Part II – Invoke upload mode via the front panel ....................................................4-2
4.2.2.3. Part III – Invoke upload mode from the Terminal Program.....................................4-3
4.2.2.4. Part IV – Uploading the new firmware ....................................................................4-4
4.2.2.5. Part V – Completing the Upgrade...........................................................................4-4
Figures
Figure 1-1: 9540 Block Diagram......................................................................................................1-2
Figure 2-1: Model 9540 Rear Panel Layout.....................................................................................2-1
Figure 2-2: General Purpose I/O Schematic....................................................................................2-4
Figure 2-3: Powering the General Purpose Input Opto Isolators from the Unit ...............................2-5
Figure 2-4: Powering the General Purpose Input Opto Isolators from an External Power Supply ..2-5
Figure 2-5: Powering the General Purpose Output Opto Isolators from the Unit.............................2-6
Figure 2-6: Power the General Purpose Output Opto Isolators from an External Power Supply ....2-6
Figure 3-1: Front Panel Layout........................................................................................................3-1
Figure 3-2: Overview of the Setup Menu.........................................................................................3-4
Figure 3-3: Overview of the Video Delay Menu...............................................................................3-5
Figure 3-4: Overview of the Vertical Blanking Menu........................................................................3-7
Tables
Table 2-1: COM 1 Connector Pin Definitions...................................................................................2-1
Table 2-2: GPIO Connector Pin Definitions.....................................................................................2-2
Table 3-1: Model 9540 Video Delay Units – 525 and 625 Line Video .............................................3-6
Table 3-2: Model 9542 Video Delay Units – 525 and 625 Line Video .............................................3-6
Table 3-3: Typical Video Delay Settings – 525 and 625 Line Video................................................3-7
ii Revision 1.2 TABLE OF CONTENTS

Model 9540 Video Delay Processor Manual
1. OVERVIEW
The Evertz 9540 series Video Delay Processors are full function video delay units for standard definition
digital video. The delay can be set in video units (frames, lines and samples) or time units (seconds). The
9540 delays the complete VBI and all ancillary data including embedded audio, VITS and D-VITC.
There are two models available with different amounts of delay possible.
Model Delay Range
9540 100 µs up to 0.5 seconds
9542 100 µs up to 2.3 seconds
Possible Applications:
• satellite uplinks
• cable headends
• mobile vehicle outputs
• broadcast transmitter inputs
• anywhere video delay is required
• re-entry feeds into Master Control Switcher for re-timing
• audio compression delay equalization
The Video Delay Processor consists of a 1 RU chassis with integrated control panel.
The video delay processor allows users to store up to 4 commonly used sets of delay parameters as
USER PRESETS, and recall them with a single keypress.
Features:
• Delay programmable in video units (frames, lines, and samples) or as time units (seconds)
• Auto senses video standard and switches between 525 and 625 video formats
• Delays SMPTE 259M Serial digital video up to ½ second (2.3 seconds for 9542)
• Pass or blank individual lines in the vertical blanking interval
• Bypass relay for program video path – activated on unit failure or from front panel
• Front panel lock-out control
• Easy to operate front panel menu system to program delay settings and VBI line blanking
• Four User-definable presets for commonly used settings
• Optional redundant power supply
OVERVIEW Revision 1.2 Page 1-1

Model 9540 Video Delay Processor Manual
Equalizer S / P VBI
Blank/Pass
Serial Input
270 Mb/s
(SMPTE 259M)
Cable
Driver
P / S
Control
RS-232
Upgrade Port
Serial Output
270 Mb/s
Front Panel
Variable
Delay Buffer
GPIO
(Bypass Protected)
Figure 1-1: 9540 Block Diagram
1.1. HOW TO USE THIS MANUAL
Throughout this manual the term 9540 will refer to both models unless otherwise stated. This manual is
organized into 4 chapters: Overview, Installation, Operation and Technical Description. Chapter 1
contains a short overview of the features of the unit. Chapter 2 gives a detailed description of the rear
panel connectors and how the Video Delay Processor should be connected into your system. Chapter 3
gives a detailed description of the operation. Chapter 4 gives an overview of how to update the firmware
in the unit and other technical issues.
!Items of special note are indicated with a double box like this.
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Model 9540 Video Delay Processor Manual
2. INSTALLATION
2.1. REAR PANEL
The following sections describe the purpose of the rear panel connectors of the 9540. Sections 2.1.1 to
2.1.3 describe the specific signals that should be connected to the units.
Figure 2-1: Model 9540 Rear Panel Layout
2.1.1. Digital Video Connections
SDI INPUT Input BNC connector for 10-bit serial digital video signals, compatible with the
SMPTE 259M (CCIR601) standard.
SDI OUTPUTS Four BNC serial digital video outputs are provided. Output 1 is protected by a
bypass relay, which will activate in the event of power loss to the unit, or can be activated from
the front panel. The remaining three outputs are not bypass protected.
2.1.2. Remote Control Connections
COM1 A 9 pin female 'D' connector for the RS-232 serial interface used for updating the firmware.
Pin
# Name Description
1 GND Chassis ground
2 Tx-/TxD RS-232 Transmit Output / RS-422 Tx-
3 Rx-/RxD RS-232 Receive Input / RS-422 Rx-
4
5 Sig Gnd RS-232 Signal Ground
6
7 Rx+/RTS RS-232 RTS Input / RS-422 Rx+
8 Tx+/CTS RS-232 CTS Output / RS-422 Tx+
9
Table 2-1: COM 1 Connector Pin Definitions
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Model 9540 Video Delay Processor Manual
GPIO This female 9 pin D is an opto-isolated Parallel port with 3 inputs and 1 output.
Pin
# Name Description
1 GP+5V +5V from general purpose interface board
2 Vext External voltage source for GPI’s
3 n/c No connection
4 n/c No connection
5 GND Chassis ground
6 GPO1 Contact closure to ground on loss of SDI input
7 GPI1 Bypass Relay (low = bypass)
8 n/c No connection
9 n/c No connection
Table 2-2: GPIO Connector Pin Definitions
2.1.3. Power Connections
LINE: The Video Delay Processor has two universal power supplies that operate on either 115v/60
Hz or 230v/50 Hz AC operation.
2.2. MOUNTING
The Video Delay Processor is equipped with rack mounting angles and fits into a standard 19 inches by
1.75 inches by 17.75 inches (483 mm x 45 mm x 451mm) rack space. The mounting angles may be
removed if rack mounting is not desired.
2.3. POWER REQUIREMENTS
2.3.1. Selecting the Correct Mains Voltage
The Video Delay Processor has two universal power supplies that automatically sense the input voltage.
The 9540 operates on either 115 Volt / 60 Hz or 230 Volt / 50 Hz AC. The PSU STATUS LEDs on the
front panel indicate if the power supplies are operating normally.
Power should be applied by connecting a 3-wire grounding type power supply cord to the power entry
modules on the rear panel. The power cord should be minimum 18 AWG wire size; type SVT marked VW-
1, maximum 2.5 m in length. The power entry module combines a standard power inlet connector, two 5 x
20 mm fuse holders and an EMI line filter.
!CAUTION: To reduce the risk of electric shock, plug each power supply cord
into separate branch circuits employing separate service grounds.
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Model 9540 Video Delay Processor Manual
2.3.2. Changing the Fuse
The fuse holder is located inside the power entry module. To change the fuses, pull out the fuse holder
from the power entry module using a small screwdriver. The fuse holder contains two fuses, one for the
line and one for the neutral side of the mains connection. Pull out the blown fuse and place a fuse of the
correct value in its place. Use slo blo (time delay) 5 x 20 mm fuses rated for 250 Volts with a current
rating of 1 amp. Carefully reinsert the fuseholder into the power entry module.
!Never replace with a fuse of greater value.
2.4. CONNECTING THE DIGITAL VIDEO
2.4.1. Video Input and Output
The 9540 requires that a digital video source be connected to the SDI INPUT BNC. The 9540 auto
senses whether the input is 525 or 625 line digital video in the component (4:2:2) format.
The four SDI OUTPUT BNCs provide identical delayed versions of the input video. If VBI blanking is
selected then these outputs will also have the specified VBI lines blanked.
When the bypass relay is not active, video will be present at outputs 1, 2, 3, and 4. When the bypass
relay is active (on power loss to the unit or activated from the front panel or Parallel GPI Input) the input
video is connected directly to output 1 and does not pass through the unit. Outputs 2, 3 & 4 will not have
any video on them when the bypass relay is active.
2.5. CONNECTING THE GENERAL PURPOSE INPUTS AND OUTPUTS
The 9 pin GPIO connector has 3 general-purpose inputs and 1 general purpose output. The GPI1 input is
used to activate the video bypass relay. The GPO1 output will give a contact closure when there is no
input signal present.
All GPI1 input is active low. This means that if you leave the input floating (not connected) then it will not
be activated. Lowering the GPI input to a voltage below Vext will activate the input.
The user can connect GP+5V supplied from the frame into the Vext pin to provide power to the GPIO
opto-isolator circuitry. In this configuration the user can activate the GPI simply by connecting the GPI
input pin to Ground (see Figure 2-3). This can be done with a button, switch, relay or an open collector
transistor. In this configuration the GPOs will be internally pulled up to 5 volts. (See Figure 2-5) Five volts
is available to the user to be used for driving external circuitry. Care must be taken to limit the load to
0.5W so there is no affect on the power supply source in the frame.
Alternately, the user can connect an external power source for the opto-isolator circuitry. Figure 2-4 and
Figure 2-6 show how to wire the GPIs and GPOs from an external power supply.
INSTALLATION Revision 1.2.1 Page 2-3

Model 9540 Video Delay Processor Manual
!Warning: Do not connect GP+5V from one frame to another frame’s GP+5V.
Pin #
GP+5v
Vext
GND
From Internal
Circuit
Chassis
Ground
From Frame Power Supply
+5v
External Power For GPI & GPO
To Internal
Circuit
10k
Ω
4.7 k
Ω
DB-9
GPI 1
GPO 1
1
2
5
7
6
Figure 2-2: General Purpose I/O Schematic
Page 2-4 Revision 1.2.1 INSTALLATION

Model 9540 Video Delay Processor Manual
Frame Supplied Power For GPIs
500
Ω
GP+5v
GND
1
5
Power OK
Vext
2
GPI
Command
GPI
7
Figure 2-3: Powering the General Purpose Input Opto Isolators from the Unit
Alternately, an external voltage source may be applied (Figure 2-4). The Vext voltage must be greater
than the voltage supplied to GPI by at least 5v.
Externally Supplied Power For GPIs
GP+5v
GND
1
5
Vext
2
N/C
5 - 50 V DC
GPI
Command
GPI
7
Figure 2-4: Powering the General Purpose Input Opto Isolators from an External Power Supply
INSTALLATION Revision 1.2.1 Page 2-5

Model 9540 Video Delay Processor Manual
Frame Supplied Power For GPOs
500
Ω
GP+5v
GPO
GND
1
6
5
Power OK
Vext
2
10k
Ω
Figure 2-5: Powering the General Purpose Output Opto Isolators from the Unit
GP+5v
GPO
GND
1
6
5
Vext
2
10k
Ω
Externally Supplied Power For GPOs
N/C
5 - 50 V DC
Figure 2-6: Power the General Purpose Output Opto Isolators from an External Power Supply
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Model 9540 Video Delay Processor Manual
3. HOW TO OPERATE THE VIDEO DELAY PROCESSOR
3.1. AN OVERVIEW OF THE KEY AND DISPLAY FUNCTIONS
The display area consists of a 16 digit alphanumeric display, 16 LED status indicators and a 16
pushbutton keypad.
The Setup menu provides a means of setting the delay that will be applied to the video, and which lines in
the vertical blanking interval will be blanked. Four user preset buttons and one factory preset button allow
you to save and recall frequently used collections of settings, to simplify operation of the Video Delay
Processor.
When the Video Delay Processor is not in the SETUP menu it will show various messages on the front
panel. The current video delay will be shown in video units or in seconds when the unit is active. When
the Bypass relay is activated, the front panel will show Bypassing Video Processor.
Figure 3-1: Front Panel Layout
The remainder of this section gives an overview of each of the front panel buttons. Sections 3.2 to 3.4 give
details on the operation of the 9540.
3.1.1. The Setup Button Group
SETUP This button is used to enter the setup menu which is used to control various setup options to
configure the operating modes of the video delay processor. (See section 3.2 for a complete
description of the setup menu.)
SELECT This button is used to save setup menu choices and settings.
↑& ↓The arrow keys are used to navigate through various menu choices in the setup menu.
3.1.2. The Preset Button Group
The Preset key group consists of the DEFAULT and PRESET SAVE buttons and four PRESET buttons.
These keys are used to load the factory default delay and VBI blanking settings, or to save and recall one
of four different user setups.
DEFAULT This button is used to recall the factory default settings for delay and vertical interval
blanking. The factory default is to bypass the delay engine. The video is delayed by the
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Model 9540 Video Delay Processor Manual
minimum propagation delay through the device (See section 4.1.4.). None of the VBI lines
will be blanked.
PRESET SAVE This button allows the user to save the current delay and VBI blanking settings to
one of the four user preset memory locations. To save the current settings to one of the
user preset locations press the PRESET SAVE button once, then the desired PRESET
button. You will be prompted to press the PRESET SAVE button a second time to confirm
the operation.
PRESETS These four buttons are used to store or recall the non-volatile USER PRESETS. To recall a
USER PRESET press the corresponding button once. (See section 3.3 for a complete
description of how to use the user preset.)
3.1.3. The Auxiliary Button Group
The Auxiliary key group consists of the PANEL LOCK and BYPASS buttons and four AUX CONTROL
buttons.
PANEL LOCKPressing the PANEL LOCK button initiates a global panel lock. All front panel controls
except the PANEL LOCK button are inhibited when LOCK is enabled. When the panel is
LOCKED the PANEL LOCK LED illuminates. Pressing the PANEL LOCK button will toggle
the LOCK state ON and OFF.
BYPASS Pressing the BYPASS button activates the video bypass relay. The SDI input video will be
fed directly to the Bypass SDI output, bypassing the video delay processor unit. When the
Bypass relay is active the BYPASS LED illuminates. Pressing the BYPASS button will
toggle the BYPASS state ON and OFF.
AUX CONTROLS These four buttons will be used for future enhancements to the Video Delay
Processor and are not currently used.
3.1.4. Status Indicators
There are 16 status indicators located on the front panel that show operational status of the Video Delay
Processor at a glance.
DEFAULT Indicates that the factory default settings are active. If the delay or VBI blanking settings
are modified this LED will extinguish.
PRESET Indicates that selected preset is active. If the delay or VBI blanking settings are modified
this LED will extinguish.
PRESET SAVE Indicates that the preset save is currently in progress. Pressing one of the PRESET
buttons will store the preset.
DELAYING VIDEO Indicates that a delay value greater than the minimum delay through the device is
being applied to the video.
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Model 9540 Video Delay Processor Manual
BLANKING VBI Indicates that at least one of the lines in the vertical blanking interval is being
blanked.
PSU STATUS Indicates that the respective power supply is functioning normally.
AUX CONTROLS These LEDs are not currently used.
PANEL LOCK Indicates that Video Delay Processor front panel controls are locked against
accidental changes.
BYPASS Indicates that Video bypass relay is active. Incoming video is not being processed,
and no delay or VBI blanking is being applied.
3.1.5. Front Panel Display Messages
When the 9540 is in the normal operating mode (not in one of the setup menus) the front panel display will
cycle through a sequence of messages, indicating the current delay settings that are in use. The first
message will indicate the video standard that the 9540 has detected. The message will show:
525 Video Delay:
or
625 Video Delay:
The next four messages will indicate the delay that the 9540 is adding into the video path. This delay
does not include the minimum processing delay through the 9540. (See section 4.1.4.) The delay will be
shown in video units (3 messages) and time units (1 message), with the time units chosen appropriately
for the amount of delay. The delay messages will show:
Frames: xx
Lines: yyy
Samples: zzz
Time: t.ddd sec
3.2. FRONT PANEL SETUP MENU
The SETUP menu system uses the 16 digit alphanumeric display and provides a quick, intuitive method of
setting the video delay and the VBI blanking in the Video Delay Processor.
The four keys in the Setup key group (SETUP, SELECT, ↑, ↓)are used to cycle through the various items
on the SETUP menu. The SETUP menu consists of a main menu with two or more choices for each menu
item.
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Model 9540 Video Delay Processor Manual
To enter the front panel programming menu, press the SETUP key. Pressing the ↑& ↓keys allows you to
move vertically within the menu tree. The top-level menu items are shown in UPPERCASE on the front
panel display. To view/change the settings for that menu item, press the SELECT key. The sub-menu
values are shown in lowercase on the front panel display. Navigation of the sub menu items depends on
the particular menu item. Some sub menu values will be shown blinking and need to be accepted using
the SELECT key before they will become active. The sub-menu items that are shown not blinking are the
active settings. See sections 3.2.1 and 3.2.2 for a complete description of the individual sub-menu items.
Pressing the SETUP button one or more times while in one of the sub-menus will return to the main menu
tree. Pressing the SETUP key while in the top-level menu will return to the normal display mode. Figure
3-2 is an overview of the top level of the SETUP menu.
!When you make a change to one of the SETUP parameters and it starts to
blink, you will need to press the SELECT button to save the change.
SOFTWARE UPGRADE
VIDEO DELAY
VBI BLANKING
SETUP
enter Setup
menu
SETUP
exit Setup
menu
Figure 3-2: Overview of the Setup Menu
3.2.1. Setting the Video Delay
This menu item allows the user to set the video delay. The maximum delay is approximately ½ second
(2.3 seconds for 9542) even though it is set using video units (frames, lines and samples). Each time the
SELECT key is pressed to accept a portion of the total delay, the new video delay will be implemented.
The video delay is set using a 3 step process. Figure 3-3 gives an overview of setting the video delay.
Page 3-4 Revision 1.2 OPERATION

Model 9540 Video Delay Processor Manual
!Pressing the SETUP button at anytime within this menu item will take you to the
previous delay parameter without saving changes to the current delay parameter.
SELECT
VIDEO DELAY
SETUP
go back to
top level menu
SETUP SELECT
SELECT
SELECT
SETUP
go back to
lines adjust
go back to
frames adjust
frames = xx
adjust frames part of delay
(xxx blinking when changed
but not accepted)
accept frames
part of delay
lines = yyy
adjust lines part of delay
(yyy blinking when changed
but not accepted)
accept lines
part of delay
samples = zzz
adjust samples part of delay
(zzz blinking when changed
but not accepted)
accept samples part
of delay
Figure 3-3: Overview of the Video Delay Menu
Step 1: Coarse Adjustment
Press the SELECT key to set the delay. The display will show frames = xx where xx is the frames part
of the delay value. Press the ↑& ↓keys to adjust the value. Holding the ↑& ↓keys will change the value
at a faster rate. The numeric frames value will be blinking after you have adjusted it indicating that it has
not taken effect yet. Press the SETUP key to return to the beginning of the video delay setup without
setting the frames part of the delay or press the SELECT key to accept the video lines part of the delay.
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Model 9540 Video Delay Processor Manual
Step 2: Medium Adjustment
The display will show lines = yyy where yyy is the partial frame delay in video lines. Press the ↑& ↓
keys to adjust the value up to the maximum number of lines per frame. The numeric lines value will be
blinking after you have adjusted it indicating that it has not taken effect yet. Press the SETUP key to
return to the frames part of the video delay setup without setting the lines part of the delay or press the
SELECT key to accept the video lines part of the delay.
Step 3: Fine Adjustment
The display will now show samples = zzzz where zzzz is the partial line delay in video samples. Press
the ↑& ↓keys to adjust the value. The numeric samples value will be blinking after you have adjusted it
indicating that it has not taken effect yet. Press the SETUP key to return to the lines part of the video
delay setup without setting the samples part of the delay or press the SELECT key to accept the video
samples part of the delay and complete the delay entry.
Table 3-1 shows the maximum number of video units of delay available in 525 and 625 line video for the
model 9540. Table 3-2 shows the maximum number of video units of delay available in 525 and 625 line
video for the model 9542. Table 3-3 shows typical conversions between video units and time units for 525
and 625 line video. The calculations are based on the total samples per line shown in Table 3-1, and the
time per sample which is 1 / (27 x 106) seconds.
Maximum delay
Video Units Time Units
Video Type Lines per
frame Samples per line Frames Lines Samples Milliseconds
525 525 1716 16 525 1716 567.296
625 625 1728 13 625 1728 560.064
Table 3-1: Model 9540 Video Delay Units – 525 and 625 Line Video
Maximum delay
Video Units Time Units
Video Type Lines per
frame Samples per line Frames Lines Samples Seconds
525 525 1716 69 525 1716 2.33573
625 625 1728 58 625 1728 2.36064
Table 3-2: Model 9542 Video Delay Units – 525 and 625 Line Video
Video Type Desired Delay Video Units
Milliseconds Total
Samples Frames Lines Samples
525 50 1,350,000 1 261 1224
100 2,700,000 2 523 732
200 5,400,000 5 521 1464
625 50 1,350,000 1 156 432
100 2,700,000 2 313 239
200 5,400,000 5 1 478
Table 3-3: Typical Video Delay Settings – 525 and 625 Line Video
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Model 9540 Video Delay Processor Manual
3.2.2. Choosing Which lines in the Vertical Blanking interval will be Blanked
This menu item allows the user to select which lines of the VBI will be blanked and which ones will be
passed through.
Press the SELECT key to enter the VBI Blanking menu item. The display will show line x: blank or
line x: pass where x is the video line number. Press the ↑& ↓keys to select the VBI line you want to
configure. Press the SELECT key to set the line blanking for this line. Use the ↑& ↓keys to select other
lines you want to configure. Only valid VBI lines for the current video standard are shown. Press the
SETUP key from within this menu to exit the VBI Blanking menu item. Figure 3-4 gives an overview of the
VBI blanking menu.
SELECT
SETUP
line x : blank
line x + 1 : blank
SELECT line x : pass
line x - 1 : blank
VBI BLANKING SELECT
set VBI
blanking
finish VBI
blanking setup
choose next
VBI line
choose previous
VBI line
change
blanking for
selected line
change
blanking for
selected line
Figure 3-4: Overview of the Vertical Blanking Menu
3.2.3. Upgrading the Firmware in the Video Delay Processor
This menu item allows the user to set up the unit for firmware upgrades. When the front panel message
shows Select = Upgrade, press the SETUP key to return to the main menu or press the SELECT key
to initiate the firmware upgrade mode. The front panel will show the message Upgrading to indicate that
it is awaiting a firmware upload. Once this message is displayed, you can only exit the firmware upgrade
mode by power cycling the unit. See section 4.2 for a complete description of how to upgrade the
firmware in the video delay processor.
3.3. LOADING THE FACTORY DEFAULTS
The DEFAULT button is used to recall the factory default settings for video delay (minimum delay as
specified in section 4.1.4) and VBI blanking (pass all lines). The DEFAULT LED will illuminate when the
Factory defaults settings are loaded. The 9540 must be in the normal operating mode (the video delay
messages will be cycling on the front panel) in order to recall the factory default settings.
OPERATION Revision 1.2 Page 3-7