evertz 7740 Series User manual

7700 MultiFrame Manual
7740 Series SDI Video Delay
Revision 1.2
1. OVERVIEW.......................................................................................................................................... 1
2. INSTALLATION................................................................................................................................... 2
3. SPECIFICATIONS............................................................................................................................... 3
3.1. SERIAL VIDEO INPUT ............................................................................................................... 3
3.2. SERIAL VIDEO OUTPUTS......................................................................................................... 3
3.3. FUNCTIONAL............................................................................................................................. 3
3.4. ELECTRICAL ............................................................................................................................. 3
3.5. PHYSICAL.................................................................................................................................. 3
4. STATUS LEDS .................................................................................................................................... 4
5. CONFIGURING THE 7740DLY USING THE ON SCREEN MENU..................................................... 4
5.1. TOP LEVEL MENU STRUCTURE...................................................................................................... 5
5.1.1. Setting the Video Delay......................................................................................................... 5
5.1.2. Choosing Which lines in the Vertical Blanking interval will be Blanked ................................ 6
6. JUMPERS AND USER CONTROLS................................................................................................... 7
6.1. SELECTING WHETHER LOCAL FAULTS WILL BE MONITORED
BY THE GLOBAL FRAME STATUS.......................................................................................... 8
6.2. ENABLING THE BYPASS RELAY ..................................................................................................... 8
6.3. CONFIGURING THE MODULE FOR FIRMWARE UPGRADES ............................................... 8
Figures
Figure 1: 7740 Block Diagram...............................................................................................................................1
Figure 2: 7742DLY Rear Panels ...........................................................................................................................2
Figure 3 : Location of Jumpers on 7740DLY Boards ............................................................................................7
Tables
Table 1: Model 7740 Video Delay Units – 525 and 625 Line Video......................................................................6
Table 2: Model 7742 Video Delay Units – 525 and 625 Line Video......................................................................6
Table 3: Typical Video Delay Settings – 525 and 625 Line Video ........................................................................6

7700 MultiFrame Manual
7740 Series SDI Video Delay
Revision 1.2
REVISION HISTORY
REVISION DESCRIPTION DATE
1.0 Original Version Jan 02
1.1 Minor typographical corrections Aug 02
1.2 Block diagram in Figure 1 updated Jan 03
Information contained in this manual is believed to be accurate and reliable. However, Evertz assumes no responsibility for the use thereof nor for
the rights of third parties, which may be effected in any way by the use thereof. Any representations in this document concerning performance of
Evertz products are for informational use only and are not warranties of future performance, either express or implied. The only warranty offered by
Evertz in relation to this product is the Evertz standard limited warranty, stated in the sales contract or order confirmation form.
Although every attempt has been made to accurately describe the features, installation and operation of this product in this manual, no warranty is
granted nor liability assumed in relation to any errors or omissions unless specifically undertaken in the Evertz sales contract or order confirmation.
Information contained in this manual is periodically updated and changes will be incorporated into subsequent editions. If you encounter an error,
please notify Evertz Customer Service department. Evertz reserves the right, without notice or liability, to make changes in equipment design or
specifications.

7700 MultiFrame Manual
7740 Series SDI Video Delay
Revision 1.2 7740DLY-1
1. OVERVIEW
The Evertz 7740 series Video Delay modules 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
7740 series video delay modules delay 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. Both versions will be referred to
as the 7740DLY throughout this manual except where the delay values are referred to.
Model Delay Range
7740DLY 100 µs up to 0.5 seconds
7742DLY 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
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 7742)
•Pass or blank individual lines in the vertical blanking interval
•Bypass relay for program video path – activated on unit failure or from GPI
•Card edge controls operate on screen menu system to program delay settings and VBI line blanking
Serial Input
270 Mb/s
(SMPTE 259M)
Cable
Driver
Control
Serial Output
270 Mb/s
(Bypass Protected)
Module
Status
Video
Present
Bypass Enable
P / S
Variable
Delay Buffer
VBI
Blank/Pass
S / P
Equalizer
Figure 1: 7740 Block Diagram

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7740 Series SDI Video Delay
7740DLY-2 Revision 1.2
2. INSTALLATION
The 7740DLY series modules come with a companion rear plate that has 5 BNC connectors and occupy
one slot in the frame. For information on mounting the rear plate and inserting the module into the frame
see the 7700FR chapter section 3.
Figure 2: 7742DLY Rear Panels
SDI INPUT Input BNC connector for 10-bit serial digital video signals, compatible with the
SMPTE 259M (CCIR601) standard.
SDI OUTPUTS Three 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 module, or can be activated
from the Bypass BNC input. The remaining two outputs are not bypass protected.
BYPASS BNC input for Bypass relay control. If you leave the input floating (not connected) then it will
not be activated. Connecting the GPI input (center) to ground activate the bypass relay. The
Bypass relay can also be activated by using the BYPASS jumper located near the front of the
module. (See section 6.2)

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7740 Series SDI Video Delay
Revision 1.2 7740DLY-3
3. SPECIFICATIONS
3.1. SERIAL VIDEO INPUT
Standards: SMPTE 259M (270 Mb/s)
Connector: 1 BNC input per IEC 169-8
Equalization: Automatic
Max. Cable Length: 210m recommended, tested to 225m @ 270 Mb/s
with Belden 8281 or equivalent cable
Return Loss: > 15 dB up to 540 Mb/s
3.2. SERIAL VIDEO OUTPUTS
Number of Outputs: 1 with relay bypass, 3 additional outputs.
Connector: BNC per IEC 169-8
Signal Level: 800mV nominal
DC Offset: 0V ±0.5V
Rise and Fall Time: 470ps nominal
Overshoot: <10% of amplitude
Return Loss: > 15 dB up to 540 Mb/s
Wide Band Jitter: < 0.2 UI
3.3. FUNCTIONAL
Minimum Delay: 815 nsec (22 samples)
Maximum Delay:
Model 7740: 525 line: 17 frames, 625 line: 14 frames (approx. .56 sec)
Model 7742: 525 line: 70 frames, 625 line: 59 frames (approx. 2.3 sec)
3.4. ELECTRICAL
Voltage: + 12VDC
Power: 10 watts
EMI/RFI: Complies with FCC regulations for class A devices.
Complies with EU EMC directive.
3.5. PHYSICAL
7700 or 7701 frame mounting:
Number of slots: 1
Stand Alone Enclosure:
Dimensions: 14 “ L x 4.5 “ W x 1.9 “ H
(355 mm L x 114 mm W x 48 mm H)
Weight: approx. 1.5 lbs. (0.7 Kg)

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7740 Series SDI Video Delay
7740DLY-4 Revision 1.2
4. STATUS LEDS
MODULE OK This Green LED will be On when the module is operating properly
LOCAL FAULT This Red LED makes it easy to identify one module in a frame that is missing an
essential input or has another fault.
The LED will blink on and off if the microprocessor is not running.
The LED will be on solid when the cable length warning is active, when input video
is lost or there is a fault in the module power supply.
VIDEO PRESENT: This Green LED will be On when there is a valid video signal present at the module
input.
5. CONFIGURING THE 7740DLY USING THE ON SCREEN MENU
An On screen menu (OSD) is used to configure many of the test generator’s parameters. The three
position, return to center, toggle switch and momentary pushbutton located on the front edge of the
module are used to navigate the OSD setup menus and configure the cards various controls.
To enter the OSD menu system, press and hold the pushbutton and then press the toggle switch up for 5
seconds. This will bring you to the main setup menu where you can use the toggle switch to move up and
down the list of available sub menus. An arrow (>) moves up and down the left hand side of the menu
items to indicate which item you are currently choosing. Once the arrow is on the desired item, press the
pushbutton to select the next menu.
On all menus, there is a selectable item Done. Selecting Done will take you to the previous menu (the one
that was used to get into the menu). If you are at the top level of the menu tree then selecting Done will
exit the OSD menu and return the 7740DLY to the normal operating mode.
Once you are in a sub menu, there may be another menu level, or there may be a list of parameters to
adjust. If there is another set of menu choices, use the toggle switch to select the next choice with the
same procedure as in the main menu.
If there is a list of parameters to adjust, use the toggle switch to move up or down to the desired parameter
and press the pushbutton. The arrow will move to the right hand side (<) indicating that you can now
adjust the parameter. Using the toggle switch, adjust the parameter to its desired value. If the parameter
is a numerical value, the number will increase if you lift the toggle switch and decrease if you push down
on the toggle switch. If the parameter contains a list of choices, you can cycle through the list by pressing
the toggle switch in either direction.
When you have stopped at the desired value, depress the pushbutton. This will update the parameter with
the selected value and move the arrow back to the left side of the parameter list. Continue selecting and
adjusting other parameters or use the Done commands to return to the next higher menu level.

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Revision 1.2 7740DLY-5
5.1. TOP LEVEL MENU STRUCTURE
The following is a brief description of the top level of the menu tree that appears when you enter the On
screen menu. Selecting one of these items will take you down into the next menu level.
Video Delay Sets the amount of delay through the 7740DLY
VBI Blanking Configure what lines of the VBI will be blanked and which ones will be
passed through..
Done Exit On Screen Menu System
5.1.1. Setting the Video Delay
The VIDEO DELAY menu item allows the user to set the video delay. The maximum delay is
approximately ½ second (2.3 seconds for 7742DLY) even though it is set using video units (frames, lines
and samples). The video delay is set using frame, line or sample increments. Each time the pushbutton is
pressed to accept a portion of the total delay, the new video delay will be implemented.
Frame = xxx Sets the amount of delay in whole numbers of frames
Line = yyy Sets the amount of delay in whole numbers of lines (the sub-frame)
Sample = zzz Sets the amount of delay in samples (the sub-line delay)
Done Return to main menu
Delay = ttt.ddd sec Displays the amount of delay in seconds
Step 1: Coarse Adjustment
Press the toggle switch up or down until the right arrow (>) is beside the Frames menu item. Press the
pushbutton to set the whole frame delay. The display will show frames = xxx where xxx is the frames
part of the delay value. Press the toggle switch up or down to adjust the value. Holding the toggle switch
will change the value at a faster rate. Press the pushbutton to accept the video frames part of the delay.
The arrow (>) will appear back at the left side of the display.
Step 2: Medium Adjustment
Press the toggle switch down until the right arrow (>) is beside the Lines menu item. Press the pushbutton
to set the whole line delay. The display will show line = yyy where yyy is the lines part of the delay
value. Press the toggle switch up or down to adjust the value. Holding the toggle switch will change the
value at a faster rate. Press the pushbutton to accept the video lines part of the delay. The arrow (>) will
appear back at the left side of the display.
Step 3: Fine Adjustment
Press the toggle switch down until the right arrow (>) is beside the Samples menu item. Press the
pushbutton to set the sample delay. The display will show sample = zzz where zzz is the samples part

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7740DLY-6 Revision 1.2
of the delay value. Press the toggle switch up or down to adjust the value. Holding the toggle switch will
change the value at a faster rate. Press the pushbutton to accept the video sample part of the delay. The
arrow (>) will appear back at the left side of the display.
Table 1 shows the maximum number of video units of delay available in 525 and 625 line video for the
model 7740. Table 2 shows the maximum number of video units of delay available in 525 and 625 line
video for the model 7742. Table 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 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 1: Model 7740 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 2: Model 7742 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: Typical Video Delay Settings – 525 and 625 Line Video
5.1.2. Choosing Which lines in the Vertical Blanking interval will be Blanked
The VBI BLANKING menu item allows the user to select what lines of the VBI will be blanked and which
ones will be passed through.
Line = yy Select a line in the vertical interval
Blanking Sets whether the line selected using the Blanking menu item will be blanked or
not
Done Return to main menu

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Revision 1.2 7740DLY-7
Step 1: Choosing the VBI line
Press the toggle switch up or down until the right arrow (>) is beside the Line menu item and press the
pushbutton. The display will show
Line = yy <
Blanking:off or Line = yy <
Blanking:on
Press the toggle switch up or down to select the VBI line you want to configure. Only valid VBI lines for
the current video standard are shown. Press the pushbutton to select this line. The arrow (>) will appear
back at the left side of the display.
Step 2: Enabling Blanking for a VBI line
Press the toggle switch down until the right arrow (>) is beside the Blanking menu item and press the
pushbutton. The display will show whether blanking is On or Off for the line selected above. Press the
toggle switch up or down to enable or disable blanking for this line and press the pushbutton to accept
your choice. The arrow (>) will appear back at the left side of the display.
To configure other VBI lines repeat steps 1 and 2. When you are finished select the Done menu item and
press the pushbutton.
6. JUMPERS AND USER CONTROLS
MODULE STATUS
SIGNAL PRESENT
EVERTZ (A) 7700PB
SFF POWER +12V
Run
Upgrade
J16
J24
J22
FRAME
STATUS
ON
OFF
J8
GND
Bypass
J25
Figure 3 : Location of Jumpers on 7740DLY Boards

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7740 Series SDI Video Delay
7740DLY-8 Revision 1.2
6.1. SELECTING WHETHER LOCAL FAULTS WILL BE MONITORED
BY THE GLOBAL FRAME STATUS
FRAME STATUS The FRAME STATUS jumper located at the front of the module determines whether
local faults (as shown by the Local Fault indicator) will be connected to the 7700FR
frame's global status bus. (This feature is not available on Rev 1 versions of the
board)
To monitor faults on this module with the frame status indicators (on the PS FRAME
STATUS LED's and on the Frame's Fault Tally output) install this jumper in the On
position. (Default)
When this jumper is installed in the Off position, local faults on this module will not
be monitored.
6.2. ENABLING THE BYPASS RELAY
BYPASS The BYPASS jumper J25 located at the front of the module allows the user to
manually activate the video bypass relay. When the video bypass relay is activated
the incoming video connected to the SDI INPUT BNC will be directly connected to
the top SDI OUTPUT BNC and will bypass the delay and VBI blanking processing of
this module. There will not be signal on the other SDI OUTPUT BNCs when the
video bypass relay is activated. The video bypass relay will also be activated in the
event of a power loss to the module, preserving the integrity of your program video
path.
To activate the video bypass relay connect this jumper on the BYPASS side. If you
connect this jumper on the other side or leave it off then the video bypass relay will
not be activated. You can also activate the video bypass relay by connecting the
center of the GPI BNC to ground (See section 2)
6.3. CONFIGURING THE MODULE FOR FIRMWARE UPGRADES
UPGRADE The UPGRADE jumper J16 located at the front of the module is used when firmware
upgrades are being done to the module. For normal operation it should be installed
in the RUN position. On Rev 1 versions of this board the upgrade jumper is located
in another location. See the Upgrading Firmware section of this manual for more
information.
To upgrade the firmware in the module unit pull it out of the frame. Move Jumper
J16 into the UPGRADE position. Install the Upgrade cable provided (located in the
vinyl pouch in the front of this manual) onto header J24 at the card edge. Re-install
the module into the frame. Run the upgrade as described in the Upgrading
Firmware section of this manual. Once the upgrade is completed, remove the
module from the frame, move J16 into the RUN position, remove the upgrade cable
and re-install the module. The module is now ready for normal operation.