evertz 7710DCDA-HD User manual

7700 MultiFrame Manual
7710DCDA-HD Downconverter & Distribution Amplifier
TABLE OF CONTENTS
1. OVERVIEW......................................................................................................................................... 1
2. INSTALLATION.................................................................................................................................. 3
3. SPECIFICATIONS.............................................................................................................................. 4
3.1. SERIAL VIDEO INPUT .............................................................................................................. 4
3.2. RECLOCKED SERIAL VIDEO DA OUTPUTS .......................................................................... 4
3.3. DOWNCONVERTED SERIAL VIDEO OUTPUTS.....................................................................4
3.4. DOWNCONVERTED COMPOSITE ANALOG VIDEO OUTPUTS............................................ 5
3.5. INPUT TO OUTPUT PROCESSING DELAY (HD INPUT VIDEO) ............................................ 5
3.6. ELECTRICAL ............................................................................................................................ 5
3.7. PHYSICAL................................................................................................................................. 5
4. STATUS INDICATORS ...................................................................................................................... 5
4.1. AUDIO STATUS LEDS.............................................................................................................. 6
5. ON SCREEN MENUS......................................................................................................................... 6
5.1. NAGIVATING THE ON SCREEN MENU SYSTEM................................................................... 6
5.2. ON SCREEN DISPLAY – MAIN MENU ....................................................................................7
5.3. CONFIGURING THE VIDEO CONTROLS ................................................................................ 8
5.3.1. Setting the Video Input Type..........................................................................................8
5.3.2. Setting the Video Input and Output Standard.................................................................9
5.3.3. 3:2 Pulldown Processing................................................................................................ 9
5.3.3.1. Selecting the 3:2 Pulldown Reference with 1080p/23.98sF Input Video .............. 10
5.3.3.2. Accommodating Non-Standard 3:2 Sequences.................................................... 10
5.3.4. Setting up the Video Output Timing .............................................................................11
5.3.4.1. Calculating the Delay through the Downconverter................................................ 12
5.3.4.2. Setting the Vertical Phase of the Output Video – 525 Line Video......................... 12
5.3.4.3. Setting the Horizontal Phase of the Output Video – 525 Line Video .................... 13
5.3.4.4. Setting the Vertical Phase of the Output Video – 625 Line Video......................... 13
5.3.4.5. Setting the Horizontal Phase of the Output Video – 625 Line Video .................... 13
5.4. CONFIGURING THE OUTPUT PICTURE...............................................................................13
5.4.1. Setting the Aspect Ratio of the Output Picture............................................................. 14
5.4.2. Setting the Action to Take when Input Video Is Missing. ............................................. 15
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5.4.3. Set the Colour of the Letterbox Panels. ....................................................................... 16
5.5. CONFIGURING THE SCALER................................................................................................16
5.5.1. Setting the Scaler Horizontal filter Sharpness..............................................................16
5.5.2. Setting the Scaler Vertical filter Sharpness..................................................................16
5.6. CONFIGURING THE VERTICAL INTERVAL PROCESSING................................................. 17
5.6.1. Displaying Closed Captions on the Program Video Outputs........................................17
5.6.2. Putting VITC On The Program Video Outputs ............................................................. 17
5.6.3. Setting The Contents Of The VITC User Bits...............................................................18
5.6.4. Setting the VITC Line for 525 Line Video Outputs .......................................................18
5.6.5. Setting the VITC Line for 625 Line Video Outputs .......................................................18
5.7. CONFIGURING THE AUDIO PROCESSING .......................................................................... 18
5.7.1. Selecting The Audio Groups That Will Be De-Embedded............................................19
5.7.2. Selecting The Audio Groups That Will Be Embedded..................................................19
5.8. SETTING UP THE ANALOG OUTPUT PARAMETERS .........................................................20
5.8.1. Setting the Composite Display Mode – Colour or Monochrome .................................. 20
5.8.2. Setting the Analog Video Output Level ........................................................................ 20
5.8.3. Setting the Hue.............................................................................................................20
5.8.4. Setting the Saturation...................................................................................................21
5.8.5. Setting the Contrast......................................................................................................21
5.8.6. Setting the Brightness ..................................................................................................21
5.8.7. Setting the NTSC Setup Pedestal on the Analog Video Output...................................21
5.8.8. Setting the NTSC Setup Pedestal on Line 21 of the Analog Video Output ..................21
5.9. UTILITIES ................................................................................................................................22
5.9.1. Recalling Configurations to the User Presets or the Factory Preset............................22
5.9.2. Saving Configurations to the User Presets ..................................................................22
5.9.3. Initiating a Software Upgrade.......................................................................................23
5.9.4. Accessing Information About this Module and its Firmware.........................................23
6. LOCATION OF LEDS AND JUMPERS............................................................................................23
6.1. SELECTING WHETHER LOCAL FAULTS WILL BE MONITORED
BY THE GLOBAL FRAME STATUS.......................................................................................24
6.2. CONTROLLING THE OUTPUT VIDEO STANDARD ON LOSS OF VIDEO .......................... 24
6.3. DISABLING THE ON SCREEN DISPLAY ON THE PROGRAM VIDEO OUTPUTS..............24
6.4. SELECTING THE FUNCTION OF THE COMP/SDI OUTPUTS 1 TO 3..................................24
7. VISTALINK™ REMOTE MONITORING/CONTROL ........................................................................25
7.1. WHAT IS VISTALINK™? ............................................................................................................25
7.2. VISTALINKTM MONITORED PARAMETERS ...........................................................................26
7.3. VISTALINKTM CONTROLLED PARAMETERS ........................................................................27
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7.4. VISTALINKTM TRAPS ............................................................................................................... 27
8. MENU QUICK REFERENCE............................................................................................................ 28
Figures
Figure 1: 7710DCDA-HD Block Diagram ............................................................................................................ 2
Figure 2: 7710DCDA-HD Rear Panel Overlay .................................................................................................... 3
Figure 3: 3:2 Pulldown Sequence Insertion – 1080p/23.98sF Input Video....................................................... 11
Figure 4: RP188 Pulldown Sequence A Frame Alignment – 1080p/23.98sF Input Video................................ 11
Figure 5: Aspect Ratio Conversions.................................................................................................................. 15
Figure 6: LED and Jumper Locations – Rev A Boards ..................................................................................... 23
Tables
Table 1: Video Input Formats .............................................................................................................................. 4
Table 2: Audio Group Status LEDs ..................................................................................................................... 6
Table 3: Video Delay ......................................................................................................................................... 12
Table 4: VistaLINK™ Monitored Parameters .................................................................................................... 26
Table 5: VistaLINK™ Controlled Parameters.................................................................................................... 27

7700 MultiFrame Manual
7710DCDA-HD Downconverter & Distribution Amplifier
REVISION HISTORY
REVISION DESCRIPTION DATE
1.0 First version May 03
1.1 Added sections for Pulldown, Video phasing and VANC processing Aug 03
Updated VistaLINK™ Parameter tables. Updated Figure 6 – Jumper locations
1.1.1 Minor typographical changed Aug 03
1.3 Updated Delay table and menu structure, fixed typographical errors Oct 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.
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1. OVERVIEW
The 7710DCDA-HD is a reclocking high definition serial digital video distribution amplifier and a high
quality downconverter for 1.5 Gb/s HDTV signals. It can also function as a monitoring distribution amplifier
for standard definition 270 Mb/s signals. The 7710DCDA-HD provides 4 reclocked DA outputs and 3
downconverted SDI or composite analog NTSC/PAL outputs (selectable). The 7710DCDA-HD accepts all
the popular international SMPTE 292M video formats. When the 7710DCDA-HD down converts
1080p/23.98sF input video to 525i/59.94 with a 3:2 pulldown, it inserts extra fields to create a random 3:2
pulldown cadence of the picture content on the downconverted output.
The 7710DCDA-HD has color space conversion from ITU rec. 709 to ITU rec. 601, and will provide
various down converted formats such as 16:9 letterbox, 14:9 letterbox, 13:9 letterbox, 4:3 center crop, and
4:3 anamorphic squeeze. Full 10 bit processing is provided throughout the signal path to achieve
excellent downconversion quality. The module allows for selectable horizontal and vertical filters to control
picture sharpness. It also de-embeds two groups of audio and re-embeds the audio on the SDI output in
time with the video. All parameters may be controlled by use of the on screen display menu.
The 7710DCDA-HD provides card edge LEDs to indicate signal present and audio groups present.
The 7710DCDA-HD occupies one card slots in the 3 RU frame, which will hold up to 15 modules or the
1RU frame, which will hold up to three modules.
Features:
Serial digital 1.5 Gb/s HD input per SMPTE 292M•
•
•
•
•
•
•
•
•
•
•
•
•
Supports most international standards including 1080i/59.94, 1080i/50, 480p/59.94, 480p/60,
720p/59.94, and 1080i/23.98sF
Will also accept 270 Mb/s SD input SDI per SMPTE 259M in a pass through mode – auto senses HD
or SD inputs
4 Reclocked DA outputs (HD if HD inputs applied, SD if SD inputs applied)
3 Selectable SDI or Composite Outputs (downconverted from HD if HD input applied), (from reclocked
SD if SD input applied)
High quality HD -> SD down conversion
Supports 16:9 letterbox, 14:9 letterbox, 13:9 letterbox, 4:3 center crop, and 4:3 anamorphic squeeze
aspect ratio conversions.
1080p/23.98sF conversion to 525i/59.94 with 3:2 pulldown sequence (random cadence)
HD to SD colour space conversion (ITU rec. 709 to ITU rec. 601)
On screen display used to configure the operating modes
De-embeds Audio from HD video and embeds into standard definition SDI video (2 groups)
Card Edge LEDs for signal presence, equalization warning, audio groups present, module status
VistaLINK™ - enabled offering remote monitoring, control and configuration capabilities via SNMP.
VistaLINK™ is available when modules are used with the 3RU 7700FR-C frame and a 7700FC
VistaLINK™ Frame Controller module in slot 1 of the frame using the model 9000NCP Network
Control Panel or Evertz VistaLINK™ PRO or other third party SNMP manager software.
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HD or SDI
Serial Video
Input
3 Downconverted
Outputs
(each are selectable)
as SDI (SMPTE 259M)
or composite analog
(NTSC/PAL)
Auto
Equalizer
S/P
&
Reclocker
4 HD/SD
Re-clocked
Outputs
Downconverter bypass
when SD SDI applied to input
Control &
Indicators
Module
Health
EQ
Warning
3/2 pulldown
Downconverter
Aspect ratio conversion
SDI
P/S
Audio/ANC
De-embedder
Audio/ANC
Embedder
NTSC/
PAL
Encoder
Audio Groups
HD SD
Video
Present
Figure 1: 7710DCDA-HD Block Diagram
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2. INSTALLATION
The 7710DCDA-HD comes with a companion rear panel overlay that can be placed over the rear panel
BNC connectors to identify their function. For information on inserting the module into the frame see the
7700FR chapter section 3.
Figure 2: 7710DCDA-HD Rear Panel Overlay
INPUT Input BNC connector for 10-bit serial digital video signals compatible with the SMPTE 292M or
SMPTE 259M-C standards. (SMPTE 259M not supported at the time of writing.)
DA OUTPUT 1 to 4 These four BNC connectors are used to output reclocked serial component video, in
the same standard as the video input
COMP/SDI OUT 1 to 3 These three BNC connectors can be individually configured either as
downconverted SDI video outputs, compatible with the SMPTE 259M-C standard, or as
composite analog (NTSC/PAL) video outputs. See section 6.4 for information on selecting the
output type..
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3. SPECIFICATIONS
3.1. SERIAL VIDEO INPUT
Standard: 270 Mb/s SMPTE 259M - pass through mode
1.485 Gb/sec SMPTE 292M – auto-detects standard
SMPTE 260M, SMPTE 274M, SMPTE 296M, SMPTE 349M – see Table 1 for a
list of supported HD video standards
Common Name Pixels /
Active Lines
Frame Rate Progressive
/Interlace
SMPTE
Standard
Output Format
1080i/59.94 1920 x 1080 29.97 (30/1.001) I 274M 525i/59.94 (NTSC)
1080i/50 1920 x 1080 25 I 274M 625i/50 (PAL)
1080p/29.97sF 1920 x 1080 29.97 (30/1.001) P (sF) 274M 525i/59.94 (NTSC)
1080p/25sF 1920 x 1080 25 P (sF) 274M 625i/50 (PAL)
1080p/23.98sF 1920 x 1080 23.98 (24/1.001) P (sF) 274M 525i/59.94 (NTSC)
1035i/59.94 1920 x 1035 29.97 (30/1.001) I 260M 525i/59.94 (NTSC)
720p/59.94 1280 x 720 59.94 (60/1.001) P 296M 525i/59.94 (NTSC)
480p/59.94 720 x 483 59.94 (60/1.001) P 293M, 349M 525i/59.94 (NTSC)
Table 1: Video Input Formats
Connector: BNC per IEC 60169-8 Ammendment 2.
Input Equalization: Automatic to 100m @ 1.5Gb/s with Belden 1694 or equivalent cable.
Return Loss: >15 dB up to 1.5GHz
3.2. RECLOCKED SERIAL VIDEO DA OUTPUTS
Standard: Same as input
Number of Outputs: 4 Per Card reclocked
Connector: BNC per IEC 60169-8 Ammendment 2
Signal Level: 800mV nominal
DC Offset: 0V ±0.5V
Rise and Fall Time: 200ps nominal for HD
750ps nominal for SD
Overshoot: <10% of amplitude
Return Loss: > 15 dB at 1.5 Gb/s
Jitter: < 0.2 UI
3.3. DOWNCONVERTED SERIAL VIDEO OUTPUTS
Standard: SMPTE 259M-C (270 Mb/s)
Number of Outputs: up to 3 Per Card (jumper selectable)
Connector: BNC per IEC 169-8
Signal Level: 800mV nominal
DC Offset: 0V ±0.5V
Rise and Fall Time: 750ps nominal
Overshoot: <10% of amplitude
Return Loss: > 15 dB at 270 Mb/s
Jitter: < 0.2 UI
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3.4. DOWNCONVERTED COMPOSITE ANALOG VIDEO OUTPUTS
Standards: Analog composite NTSC (SMPTE 170M) or
Analog composite PAL (ITU-R BT.470)
Number of Outputs: up to 3 Per Card (jumper selectable)
Connectors: BNC per IEC 169-8
Signal Level: 1 V p-p nominal
DC Offset: 0V ±0.1V
Return Loss: >35dB up to 5 MHz
Frequency Response: 0.1dB to 4 MHz, 01.5dB to 5.5 MHz
Differential Phase: <0.5°(<0.3°typical)
Differential Gain: <0.8% (<0.5 % typical)
SNR: >78dB to 5 MHz (shallow ramp)
Impedance: 75 ohm
3.5. INPUT TO OUTPUT PROCESSING DELAY (HD INPUT VIDEO)
Video Delay: Just less than 1 to 2 frames depending on input video format, processing mode
and phase setting
Audio Delay: Audio is delayed and re-embedded in time with the output picture
3.6. ELECTRICAL
Voltage: +12VDC
Power: 10 Watts.
EMI/RFI: Complies with FCC regulations for class A devices.
Complies with EU EMC directive.
3.7. PHYSICAL
Number of slots: 1
4. STATUS INDICATORS
The 7710DCDA-HD has 10 LED Status indicators on the main circuit board front card edge to show
operational status of the card at a glance. Figure 6 shows the location of the LEDs and card edge controls.
Two large LEDs on the front of the board indicate the general health of the module
LOCAL FAULT: This Red LED indicates poor module health and will be On during the absence of a
valid input signal or if a local input power fault exists (i.e.: a blown fuse). The LOCAL
FAULT indication can also be reported to the frame through the FRAME STATUS
jumper.
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MODULE OK: This Green LED indicates good module health. It will be On when a valid input
signal is present, and board power is good.
There are four small LEDs near the upper edge of the board that indicate the status of the equalizer and
reclocker.
VIDEO PRESENT: This Green LED will be On when there is a valid signal present at the module input.
HD INPUT: This Green LED will be On when there is a valid high definition signal present at the
module input.
SD INPUT: This Green LED will be On when there is a valid standard definition (525 or 625 line)
SDI signal present at the module input.
CABLE LENGTH WARNING: This Yellow LED will be On when the cable equalizer detects that the
cable length is greater than a preset threshold (factory set for 100 meters of Belden
1694A or equivalent cable).
4.1. AUDIO STATUS LEDs
Four LEDs located on the lower edge of the module (near the card extractor) indicate which audio groups
are present in the input video. Audio group LED 1 is located closest to the center of the module.
Audio Group
LED
Colour Audio Group Status
1 Off No group 1 present on input video.
Green Group 1 present on input video.
2 Off No group 2 present on input video.
Green Group 2 present on input video.
3 Off No group 3 present on input video.
Green Group 3 present on input video.
4 Off No group 4 present on input video.
Green Group 4 present on input video.
Table 2: Audio Group Status LEDs
5. ON SCREEN MENUS
5.1. NAGIVATING THE ON SCREEN MENU SYSTEM
A toggle switch and pushbutton allow card edge navigation of a set of on-screen menus used to configure
the card. To enter the on-screen menu system, press the pushbutton once. 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 (Î) 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 level.
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On all menus, there are two extra selectable items: Back and Exit. Selecting Back will take you to the
previous menu (the one that was used to get into the current menu) while Exit will return the display to its
normal operating mode. On the main menu, BACK and EXIT will both take you to the normal operating
mode.
Once in a sub menu, there may be another menu layer, 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 desired menu item and press the
pushbutton.
To adjust any parameter, 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 of the line (Í) 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.
When you have stopped at the desired value, depress the pushbutton. This will update the parameter to
the selected value and move the arrow back to the left side of the parameter list (Î). Continue selecting
and adjusting other parameters or use the BACK or EXIT commands.
5.2. ON SCREEN DISPLAY – MAIN MENU
The OSD menu is arranged in a layered structure that groups similar configuration items together. The
following section gives a brief description of the first level of menus that appear when you enter the OSD
screens. Selecting one of these items will take you to the next menu level. Sections 5.3 to 5.8 provide
detailed descriptions of each of the sub menus. The tables in sections 5.3 to 5.8 are arranged in an
indented structure to indicate the path taken to reach the control. Menu items or parameters that are
underlined indicate the factory default values.
Video Sets the input and output video standards and timing for the video output.
Output Picture Configuration of the output picture aspect ratio, action on loss of input, panel
colours, and other items related to the output picture.
Scaler Configuration of the scaler filter sharpness
VANC Data Processing Controls how vertical interval data is processed
Audio Sets the Audio groups
Analog Output Configuration of the analog video output parameters
Utilities Card preset management and various debug and maintenance features.
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5.3. CONFIGURING THE VIDEO CONTROLS
The Video menus are used to configure parameters associated with the input and output video standards
and output video timing. Other than the Video Type menu, these menu items are not applicable when a
standard definition input video is connected. The chart below shows the items available in the Video
menu. Section 5.3.1 gives detailed information about the menu item.
Video Type Selects the video input will be High Definition or Standard definition.
Std Selects the video input and output standards.
Pulldown Reference Selects the reference source when 3:2 pulldown is being added on the
output.
A Frame Offset Sets the offset of the A Frame from the Pulldown Reference when 3:2
pulldown is being added on the output
525 V Phase Offset Sets the vertical phase of the output signal to the NTSC input.
525 H Phase Offset Sets the horizontal phase of the output signal to the NTSC input.
625 V Phase Offset Sets the vertical phase of the output signal to the PAL input.
625 H Phase Offset Sets the horizontal phase of the output signal to the PAL input.
5.3.1. Setting the Video Input Type
Video
Video Type
Auto
SD
HD
With this control, you can set whether the 7710DCDA-HD will
function as a reclocking high definition serial digital video
distribution amplifier and a high quality downconverter for 1.5
Gb/s HDTV signals or function as a monitoring distribution
amplifier for standard definition 270 Mb/s signals.
When set to Auto, the module will autodetect the input video
type. You can also force it to either high definition mode (HD) or
standard definition mode (SD).
"
When the input video is Standard Definition, the 7710DCDA-HD operates as a
monitoring distribution amplifier. In this mode it does not process the audio or
vertical interval data but merely passes it through. Accordingly, the menu items
that control these functions (as described in sections 5.3.2 to 5.7) have no effect
when the 7710DCDA-HD is operating with standard definition video.
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5.3.2. Setting the Video Input and Output Standard
Video
Std
Auto
1080i/59.94 to 525i/59.94
720p/59.94 to 525i/59.94
1080i/50 to 625i/50
1080p/23.98sF to 525i/59.94
1080p/29.97sF to 525i/59.94
1080p/25sF to 625i/50
1035i/59.94 to 525i/59.94
480p/59.94 to 525i/59.94
With this control, you can set the input and output video
standards. This menu item is not applicable when a standard
definition input video is connected.
Note: When set to Auto, the module can not distinguish between
1080i/59.94, 1080p/29.97sF and 480p/59.94, so it will be treated
as 1080i/59.94. Similarly 1080p/25sF will be treated as
1080i/50.
5.3.3. 3:2 Pulldown Processing
When using a 1080i/59.94 input video feed containing 3:2 pulldown, the 7710DCDA-HD downconverts
each field of the incoming image to one field of output image, so there will be no pulldown related de-
interlacing artifacts on film originated material with 3:2 pulldown, or video originated material acquired at a
nominal 24 frames per second.
When using a 720p/59.94 input video feed the 7710DCDA-HD downconverts each frame of the incoming
image to one field of output image, so there will be no pulldown related artifacts on film originated material
with 3:2 pulldown, or video originated material acquired at a nominal 24 frames per second.
When using a 1080p/23.98sF input video feed the 7710DCDA-HD combines each segment of the
incoming image is back to a progressive frame before down conversion. After down conversion, extra
fields are inserted to create a 3:2 pulldown at the output. The Pulldown Reference and A Frame Offset
menus are used to determine the cadence of the 3:2 output.
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5.3.3.1.Selecting the 3:2 Pulldown Reference with 1080p/23.98sF Input Video
"
This menu setting is only used when the input video is 1080p/23.98sF. In other
input video formats it is not applicable
Video
Pulldown Reference
Auto
RP 188
Free Run
On 1080p/23.98sF video inputs the Pulldown Reference menu is used to
identify the input frame that will become an A frame at the output. This
frame is called the A frame candidate (see Figure 3). The output of the A
frame candidate frame will delayed by 2 frames, will consist of two video
fields and will normally be in time with the input. Additionally, an offset can
be added to the A Frame reference using the A Frame Offset control to
accommodate situations where the A frames are not in time with the A
Frame reference. (See section 5.3.3.2)
When you select Auto the 7710DCDA-HD will auto detect the pulldown
reference according to the following priority:
•
•
RP188 ancillary timecode if present
Free Run pulldown if RP188 is not present
Select RP 188 when the embedded ancillary timecode present on the input
video is used to determine the pulldown. The input frames with time code
frame numbers divisible evenly by 4 will normally identify the input A frame
candidates.
Select Free Run when you want a continuous 3:2 pulldown on the output
but do not care if it matches specific frames of the input video.
5.3.3.2.Accommodating Non-Standard 3:2 Sequences
"
This menu setting is only used when the input video is 1080p/23.98sF. In other
input video formats it is not applicable
Video
A Frame Offset
0
1
2
3
This control allows the user to select other frames as the A Frames.
Figure 4 shows how this control defines the A frame when RP188 Ancillary
data is used to control the 3:2 pulldown.
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0
odd
0
even
0 1
1
odd
1
even
2
1
odd
2
even
3
2
odd
3
even
3
odd
3
even
0
odd
0
even
1
odd
1
even
2
odd
2
even
3
odd
3
even
1080p/23.98sF
525i/59.94
Frame
Buffer
A Frame
A Frame Candidate
4
A Frame Candidate
4
odd
4
even
B Frame C Frame D Frame
Figure 3: 3:2 Pulldown Sequence Insertion – 1080p/23.98sF Input Video
:00 :01 :02 :03
1080p/24sF
A Frame Candidate
A Frame Offset
0
1
2
3
Figure 4: RP188 Pulldown Sequence A Frame Alignment – 1080p/23.98sF Input Video
5.3.4. Setting up the Video Output Timing
The output stage of the downconverter contains a frame buffer and a line buffer so that the output video
can be timed with respect to the incoming HD Video.
There are separate controls to adjust the horizontal and vertical timing of the output video for both the 525
and 625 line video standards. The controls work in the same way for each video standard, except that the
V Phase Offset control has valid values from 1 to the number of lines per frame in the respective video
standard.
!
The V Phase Offset and H Phase Offset adjustments are REAL TIME
ADJUSTMENTS and will affect the output video timing immediately. These
settings should not be adjusted when the output video is in the broadcast chain.

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5.3.4.1.Calculating the Delay through the Downconverter.
The delay through the downconverter is dependent on the video input format and the H and V phase
settings. Table 3 shows the default and maximum and minimum delays for each video standard. Delays
shown are expressed in the units of the output video.
The default delay will be when the V Phase Offset and H Phase Offset parameters are set to zero. When
increasing the V Phase Offset value causes it to go beyond the limit of the frame buffer (the line value
shown in the maximum delay column), the V Phase Offset will wrap to the beginning of the frame buffer,
resulting in a loss of one frame of throughput delay between the HD input and the video output. When
increasing the H Phase Offset value causes it to go beyond the limit of the line buffer (the sample value
shown in the maximum delay column), the H Phase Offset will wrap to the beginning of the line buffer.
Thus, the minimum delay is achieved when both the V Phase Offset and H Phase Offset wrap to the
beginning of the frame and line buffers and will occur when the V Phase Offset is set to the line value
shown and the H Phase Offset is set to the sample value shown in the minimum delay columns. The
maximum delay is achieved one line before the V Phase Offset wraps to the beginning of the frame buffer
and one sample before the H Phase Offset wraps to the beginning of the line buffer and will occur when
the V Phase Offset is set to the line value shown and the H Phase Offset is set to the sample value shown
in the maximum delay columns.
Default
Delay
Maximum Delay Minimum Video Delay
Frames Frames Lines Samples Frames Lines Samples
1080i59.94 Field 1 1 518 27 0 518 28
1080i50 Field 1 1 615 1594 0 615 1595
1080p23.98sF 2 2 516 1403 1 516 1404
1080p29.97sF 2 2 269 777 1 269 777
1080p25sF 2 2 303 767 1 303 768
1035i59.94 Field 1 1 518 81 0 518 82
720p59.94 1.5 1 516 220 0 516 221
480p59.94 1 1 517 1633 0 517 1634
Table 3: Video Delay
5.3.4.2.Setting the Vertical Phase of the Output Video – 525 Line Video
Video
525 V Phase Offset
0 to 524
0
With this control, you can set the vertical timing of the output video with
respect to the NTSC input when operating with a 525 line video output.
Setting this control to 0 keeps the output video in time with the input video.
Increasing the value will delay the output video in one-line increments. In
order to advance the vertical timing, set the control to 525 minus the number
of lines that you wish to advance the output video. (E.g. to advance the
output video 5 lines set the value to 520.) When increasing the
V Phase Offset value causes it to go beyond the limit of the frame buffer,
the V Phase Offset will wrap to the beginning of the frame buffer, resulting in
a change of one frame of throughput delay between the HD input and the
video output. See Table 3 for the minimum and maximum delays possible.
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5.3.4.3.Setting the Horizontal Phase of the Output Video – 525 Line Video
Video
525 H Phase Offset
0 to 1715
0
With this control, you can set the horizontal timing of the output video with
respect to the NTSC input when operating with a 525 line video output.
Setting this control to 0 keeps the output video in time with the input video.
Increasing the value will delay the output video in one-sample increments.
In order to advance the horizontal timing of the output video set the control
to 1716 minus the number of samples that you wish to advance the output
video. (E.g. to advance the output video 5 samples set the value to 1711.)
When increasing the H Phase Offset value causes it to go beyond the limit
of the line buffer, the H Phase Offset will wrap to the beginning of the line
buffer, resulting in a change of one line of throughput delay between the HD
input and the video output. See Table 3 for the minimum and maximum
delays possible.
5.3.4.4.Setting the Vertical Phase of the Output Video – 625 Line Video
Video
625 V Phase Offset
0 to 624
0
With this control, you can set the vertical timing of the output video with
respect to the PAL input when operating in a 625 line video output. Setting
this control to 0 keeps the output video in time with the input video.
Increasing the value will delay the output video in one-line increments. In
order to advance the output video set the control to 625 minus the number
of lines that you wish to advance the output video. (E.g. to advance the
output video 5 lines set the value to 620.) When increasing the
V Phase Offset value causes it to go beyond the limit of the frame buffer,
the V Phase Offset will wrap to the beginning of the frame buffer, resulting in
a change of one frame of throughput delay between the HD input and the
video output. See Table 3 for the minimum and maximum delays possible.
5.3.4.5.Setting the Horizontal Phase of the Output Video – 625 Line Video
Video
625 H phase Offset
0 to 1727
0
With this control, you can set the horizontal timing of the output video with
respect to the PAL input when operating with a 625 line video output.
Setting this control to 0 keeps the output video in time with the input video.
Increasing the value will delay the output video in one-sample increments.
In order to advance the horizontal timing of the output video set the control
to 1728 minus the number of samples that you wish to advance the output
video. (E.g. to advance the output video 5 samples set the value to 1723.)
When increasing the H Phase Offset value causes it to go beyond the limit
of the line buffer, the H Phase Offset will wrap to the beginning of the line
buffer, resulting in a change of one line of throughput delay between the HD
input and the video output. See Table 3 for the minimum and maximum
delays possible.
5.4. CONFIGURING THE OUTPUT PICTURE
The Output Picture menus are used to configure parameters associated with the output picture. These
menu items are not applicable when a standard definition input video is connected. The chart below
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shows the items available in the Output Picture menu. Sections 5.4.1 to 5.4.3 give detailed information
about each of the menu items.
Aspect Ratio Selects the aspect ratio of the output picture.
Loss of Video Selects the action to take when the input video is missing
Panel Colours Sets the colour of the letterbox panels.
5.4.1. Setting the Aspect Ratio of the Output Picture
Output Picture
Aspect Ratio
16:9 Letterbox
4:3 Side Cut
4:3 Squeeze
14:9 Letterbox
13:9 Letterbox
SDTV monitors are usually 4:3 so there is a need for some simple aspect
ratio conversion from the HDTV 16:9 format. With this control, you can set
the aspect ratio of the output Picture.
When we display a 16:9 picture on a 4:3 (12:9) monitor, the picture
becomes anamorphic (4:3 squeeze) resulting in tall thin people. To correct
this problem, we have a choice of cropping the edges (4:3 side cut) or
making the whole picture smaller (16:9 letter box). The 14:9 and 13:9
letterbox solutions are a compromise where the picture is larger than 16:9
letterbox and less of the edges are cropped than 4:3 side cut.
The anamorphic solution uses all the horizontal lines of the 4:3 raster.
Clipping discards video information at the start and end of each line. For the
letterbox solution, we have to re-map the picture to occupy fewer lines. The
unused lines are left black at the top and bottom of the picture.
Figure 5 shows the various output aspect ratios available.
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4:3 Squeeze
16:9 Letterbox
4:3 Sidecut
14:9 Letterbox
13:9 Letterbox
Figure 5: Aspect Ratio Conversions
5.4.2. Setting the Action to Take when Input Video Is Missing.
Output Picture
Loss of Video
Black
Blue
Pass
The user can set the output to go to black, go to blue or pass the input with
this control. When set to Black or Blue the video standard of the output is
set by jumper J7. (See section 6.2)
When set to Pass the output video will be incoherent when the video input is
missing.
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5.4.3. Set the Colour of the Letterbox Panels.
Output Picture
Panel Colours
Black
Blue
Red
White
The user can set the colour of the letterbox panels with this control.
5.5. CONFIGURING THE SCALER
The 7710DCDA-HD scaler chip uses a process of filtering to in order to reduce the resolution from 1920 x
1080 (or 1280 x 720) to 720 x 480 (or 720 x 576). The Scaler menus are used to configure the cut-off
frequencies of the filters associated with the scaler hardware. These menu items are not applicable when
a standard definition input video is connected. The chart below shows the items available in the Scaler
menu. Sections 5.5.1 to 5.5.2 give detailed information about each of the menu items.
H Filter Cutoff Sets the cutoff frequency of the horizontal filter in the scaler
V Filter Cutoff Sets the cutoff frequency of the vertical filter in the scaler
5.5.1. Setting the Scaler Horizontal filter Sharpness
Scaler
H Filter Cutoff
0.35 Fs
0.15 to 0.35 Fs
With this control, you can set the sharpness of the horizontal filter used
during the down conversion process. Larger numbers mean a sharper
picture.
5.5.2. Setting the Scaler Vertical filter Sharpness
Scaler
V Filter Cutoff
0.35 Fs
0.15 to 0.35 Fs
With this control, you can set the sharpness of the vertical filter used during
the down conversion process. Larger numbers mean a sharper picture.
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