evertz 7710ARC Series User manual

7700 MultiFrame Manual
7710ARC Series - SD Aspect Ratio Converter
Revision 1.1
TABLE OF CONTENTS
1. OVERVIEW............................................................................................................................. 1
1.1. DEFINITIONS ............................................................................................................................... 3
2. INSTALLATION...................................................................................................................... 5
2.1. VIDEO CONNECTIONS ............................................................................................................... 5
2.2. GENERAL PURPOSE INPUTS....................................................................................................6
3. SPECIFICATIONS .................................................................................................................. 7
3.1. SERIAL VIDEO INPUT................................................................................................................. 7
3.2. SERIAL VIDEO OUTPUTS........................................................................................................... 7
3.3. GENLOCK INPUT ........................................................................................................................ 7
3.4. GENERAL PURPOSE INPUTS....................................................................................................7
3.5. ELECTRICAL ............................................................................................................................... 7
3.6. PHYSICAL.................................................................................................................................... 7
4. STATUS INDICATORS........................................................................................................... 8
5. CARD EDGE CONTROLS.................................................................................................... 10
6. OPERATION OVERVIEW..................................................................................................... 10
6.1. QUICK CONFIGURATION ......................................................................................................... 10
6.2. DETAILED CONFIGURATION OVERVIEW .............................................................................. 10
6.2.1. Aspect Ratio Mode – General Concepts ....................................................................... 10
6.2.1.1. Source Frame Aspect Ratio .............................................................................11
6.2.1.2. Image Aspect Ratio .......................................................................................... 12
6.2.2. Relationship Between Input and Output Image ............................................................. 14
6.2.2.1. Cropping ........................................................................................................... 14
6.2.2.2. Stretching (Squeezing) ..................................................................................... 15
6.2.2.3. Filling ................................................................................................................15
6.2.3. Relationship Between Output Image and Destination Frame........................................ 16
6.2.4. Manual Mode ................................................................................................................. 17
7. ON SCREEN MENUS........................................................................................................... 18
7.1. NAVIGATING THE ON SCREEN MENU SYSTEM.................................................................... 18
7.2. ON SCREEN DISPLAY – MAIN MENU ..................................................................................... 18

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Revision 1.1
7.3. CONFIGURING THE VIDEO CONTROLS ................................................................................. 19
7.3.1. Set The Video Input Source (7710ARC version only) ...................................................19
7.3.2. Set The Video Input Standard .......................................................................................19
7.3.3. Selects The Action To Take When Input Video Is Missing ............................................20
7.3.4. Selects The Source Of Genlock Reference................................................................... 20
7.3.5. Selects The Source Of External Genlock ......................................................................20
7.3.6. Selects The Horizontal Phase Offset.............................................................................21
7.3.7. Selects The Vertical Phase Offset .................................................................................21
7.3.8. Select If Ancillary Data (Non-Video) Is Passed To The Output .....................................21
7.3.9. Bypass Blanking Of Active Picture Before The Selected Line....................................... 21
7.4. CONFIGURING THE ASPECT RATIO CONVERTER ...............................................................22
7.4.1. Configuring The Aspect Ratio Scaler Mode................................................................... 22
7.4.1.1. Quick Selection Of Common Conversions Using Menu Presets......................24
7.4.1.2. Set The Aspect Ratio Of The Input Image........................................................25
7.4.1.3. Set Custom Aspect Ratios Of The Input Image................................................ 25
7.4.1.4. Set The Aspect Ratio Of The Source Frame.................................................... 25
7.4.1.5. Set Custom Aspect Ratios Of The Source Frame............................................ 25
7.4.1.6. Select Input Image Horizontal Position In Source Frame.................................26
7.4.1.7. Select Input Image Vertical Position In Source Frame .....................................26
7.4.1.8. Selects How Many Pixels To Crop From The
Left And Right Of The Input Image...................................................................26
7.4.1.9. Determines How To Convert The Input Image Into The Output Image ............27
7.4.1.10. Set Crop Horizontal Offset................................................................................ 27
7.4.1.11. Set Crop Vertical Offset....................................................................................27
7.4.1.12. Set The Aspect Ratio Of The Output Image.....................................................28
7.4.1.13. Set Custom Aspect Ratios Of The Output Image ............................................. 28
7.4.1.14. Set The Aspect Ratio Of The Destination Frame ............................................. 28
7.4.1.15. Set Custom Aspect Ratios Of The Destination Frame ..................................... 28
7.4.1.16. Set Output Image Horizontal Position ..............................................................29
7.4.1.17. Set Output Image Vertical Position................................................................... 29
7.4.2. Configuring The Manual Scaler Mode ...........................................................................29
7.4.2.1. Converts Aspect Ratio Conversion Setup Into Scaler Parameters ..................30
7.4.2.2. Setting User Defined Aspect Ratios ................................................................. 30
7.4.3. Configuring The Active Format Description And Pan-Scan Parameters ....................... 31
7.4.3.1. Enable Insertion of AFD/Bar Data VANC packets on the Output Video........... 32
7.4.3.2. Set The AFD Output Line Number ...................................................................32
7.4.3.3. Enable Insertion of Pan-Scan VANC packets on the Output Video .................32
7.4.3.4. Set The Pan-Scan Output Line Number........................................................... 33
7.4.3.5. Set The Handling Of Shoot And Protect...........................................................33
7.4.3.6. Set The Read Pan-Scan Data Set ID ...............................................................33
7.4.3.7. Set The Write Pan-Scan Data Set ID ...............................................................33
7.4.3.8. Setting The Priority Level for Processing Incoming SMPTE 2016 Packets...... 34
7.4.4. Configuring The Wide Screen Signalling Parameters ...................................................35
7.4.4.1. Enable WSS Insertion on the Output Video .....................................................35
7.4.4.2. Set The WSS Read Line ..................................................................................35
7.4.4.3. Set The WSS Write Line...................................................................................35
7.4.5. Selecting The Conversion Mode.................................................................................... 36
7.4.6. Selecting The Source Of The Fill (7710ARC-F version only) ........................................ 36
7.4.7. Set The Colour Of The Letterbox Panels....................................................................... 36
7.5. CONFIGURING THE VIDEO PROCESSING FUNCTIONS .......................................................37
7.5.1. Enabling Gamma Adjust ................................................................................................ 37

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Revision 1.1
7.5.2. Setting the Gamma Level .............................................................................................. 38
7.5.3. Enabling RGB Clipping .................................................................................................. 38
7.5.4. Setting the Gain Levels..................................................................................................38
7.5.5. Setting the DC Offset..................................................................................................... 38
7.5.6. Setting the Hue .............................................................................................................. 38
7.6. CONFIGURING IMAGE ENHANCEMENT................................................................................. 39
7.6.1. Enabling Image Enhancement....................................................................................... 39
7.6.2. Setting the Detail Gain................................................................................................... 39
7.6.3. Setting the Luma Floor ..................................................................................................39
7.6.4. Setting the Detail Noise Floor ........................................................................................ 40
7.6.5. Setting the Enhancement Limit...................................................................................... 40
7.6.6. Setting the Horizontal Band ........................................................................................... 40
7.6.7. Setting the V Enhancement ........................................................................................... 40
7.7. UTILITIES ................................................................................................................................... 41
7.7.1. Selecting the On Screen Display ................................................................................... 41
7.7.2. Recalling Configurations From The User Presets Or The Factory Preset..................... 41
7.7.3. Saving Configurations To The User Presets ................................................................. 42
7.7.4. Recall Presets Via GPIs ................................................................................................ 42
7.7.5. Initiating a Software Upgrade ........................................................................................43
7.7.6. Accessing Information About this Module and its Firmware .......................................... 43
8. LOCATION OF JUMPERS ................................................................................................... 44
8.1. SELECTING WHETHER LOCAL FAULTS WILL BE MONITORED
BY THE GLOBAL FRAME STATUS.......................................................................................... 44
8.2. CONFIGURING THE MODULE FOR FIRMWARE UPGRADES ............................................... 44
8.3. CONTROLLING GPI PULLUP VOLTAGE................................................................................. 45
8.4. CONTROLLING THE GENLOCK BNC TERMINATION............................................................ 45
9. VistaLINK®REMOTE MONITORING/CONTROL ................................................................ 46
9.1. WHAT IS VISTALINK®? ............................................................................................................ 46
9.2. VISTALINK®MONITORED PARAMETERS .............................................................................. 46
9.3. VISTALINK®CONTROLLED PARAMETERS ........................................................................... 47
9.4. VISTALINK®TRAPS .................................................................................................................. 49
9.5. VISTALINK® PRO CONFIGURATION WINDOWS..................................................................... 50

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Revision 1.1
Figures
Figure 1-1: 7710ARC Block Diagram ..................................................................................................................... 2
Figure 1-2: 7710ARC-F Block Diagram.................................................................................................................. 2
Figure 2-1: 7710ARC and 7710ARC-F Rear IO Modules ...................................................................................... 5
Figure 2-2: Typical GPI Circuitry ............................................................................................................................ 6
Figure 4-1: LED Status Indicators .......................................................................................................................... 8
Figure 5-1: Card Edge Controls ........................................................................................................................... 10
Figure 6-1: 4:3 Full Screen Image........................................................................................................................ 12
Figure 6-2: 16:9 Letterbox Image ......................................................................................................................... 12
Figure 6-3: 16:9 Distorted Image.......................................................................................................................... 12
Figure 6-4: 4:3 Postage Stamp............................................................................................................................. 12
Figure 6-5: 16:9 Full Screen Image...................................................................................................................... 13
Figure 6-6: 4:3 Side Panels .................................................................................................................................. 13
Figure 6-7: 4:3 Distorted Image............................................................................................................................ 13
Figure 6-8: 16:9 Postage Stamp........................................................................................................................... 13
Figure 6-9: Reference Image................................................................................................................................ 14
Figure 6-10: Large to small aspect ratio crop - Side Cropping ............................................................................ 14
Figure 6-11: Large to small aspect ratio squeeze – anamorphic squeeze .......................................................... 15
Figure 6-12: Large to small aspect ratio fill – Letterboxed image ........................................................................ 16
Figure 6-13: Postage Stamp Image from Incorrect Aspect Ratio conversion ...................................................... 16
Figure 8-1: Jumper Locations............................................................................................................................... 44
Figure 9-1: Monitor Window ................................................................................................................................. 50
Figure 9-2: Video Control Window ....................................................................................................................... 51
Figure 9-3: Converter Control Window................................................................................................................. 52
Figure 9-4: Converter Control Misc. Window ....................................................................................................... 53
Figure 9-5: Misc. Control Window ........................................................................................................................ 54
Figure 9-6: Traps Window .................................................................................................................................... 55
Tables
Table 7-1: Main Menu........................................................................................................................................... 18
Table 7-2: Video Controls..................................................................................................................................... 19
Table 7-3: Aspect Ratio Converter Controls......................................................................................................... 22
Table 7-4: Aspect Ratio Scaler Mode Controls .................................................................................................... 23
Table 7-5: Manual Scaler Controls....................................................................................................................... 29
Table 7-6: Active Format Description Parameters ............................................................................................... 32
Table 7-7: Wide Screen Signalling Parameters ................................................................................................... 35
Table 7-8: Video Processing Functions................................................................................................................ 37
Table 7-9: Image Enhancement Controls............................................................................................................. 39
Table 7-10: Utility Controls ................................................................................................................................... 41
Table 9-1: VistaLINK®Monitored Parameters...................................................................................................... 46
Table 9-2: VistaLINK®Controlled Parameters ..................................................................................................... 49
Table 9-3: VistaLINK®Traps Parameters............................................................................................................. 49

7700 MultiFrame Manual
7710ARC Series - SD Aspect Ratio Converter
Revision 1.1
REVISION HISTORY
REVISION DESCRIPTION DATE
0.1 Preliminary version Oct 06
0.2 Updated menu items Nov 06
0.3 Minor corrections throughout the manual Dec 06
1.0 Added screen captures to section 9.5 Feb 07
1.1 Updated specifications Jan 08
Information contained in this manual is believed to be accurate and reliable. However, Evertz assumes no responsibility for the use thereof or 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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Revision 1.1
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7700 MultiFrame Manual
7710ARC Series - SD Aspect Ratio Converter
Revision 1.1 7710ARC-1
1. OVERVIEW
The 7710ARC and the 7710ARC-F modules are dual standard (525/625) serial digital 270Mb/s high
quality motion adaptive video aspect ratio converters (ARC) designed for use in television production
facilities, DBS satellite operations, outside broadcast vehicles, MSO cable facilities, production and post-
production facilities.
"
From this point forward, the 7710ARC, and the 7710ARC-F modules will be referred
to as the “ARC Series”, unless the feature in question is applicable only to one of
the modules, in which case the specific model number will be referenced.
With full 10-bit processing, the ARC Series modules convert any aspect ratio picture input to any aspect
ratio picture output maintaining excellent image quality. The ARC Series modules read Active Format
Description (AFD), Pan-Scan and Wide Screen Signalling (WSS) data to automatically set the input image
aspect ratio. The module also supports full AFD, Pan-Scan and WSS insertion capability on the output
side, along with transparent handling of other HANC and VANC from the input to the output. All
parameters may be controlled by use of the on screen display menu and/or via SNMP (using VistaLINK®
PRO or 9000NCP Network Control Panel).
The 7710ARC-F modules have a built in digital keyer. This allows for insertion of static or animated logos
into any of the panels generated after an aspect ratio conversion.
The ARC Series provide card edge Light Emitting Diodes (LED’s) to indicate signal presence, input and
output modes, and occupies one card slot in the 7700FR-C frame that will hold up to 16 modules.
Features:
• Any aspect ratio to any aspect ratio, with standard support for 16:9 letterbox, 14:9 letterbox, 4:3 center
crop, and 4:3 anamorphic squeeze aspect ratio conversions
• Flexible ARC control: manual configuration or slave to incoming AFD, Pan-Scan or WSS – can be
controlled via GPI or VistaLINK®
• Motion adaptive de-interlace for exceptional vertical resolution
• High quality 10-bit video processing
• Full AFD/Bar Data, Pan-Scan and WSS input handling and output insertion
• Full VANC and HANC transfer from input to output with same delay as the video
• 10 user presets for storing custom module configurations
• GPI inputs to recall module configuration
• Auto detecting 525 or 625 SD-SDI video (per SMPTE 259M) inputs
• 1 SDI Program input and 1 SDI Program Backup input. The video input source is user selectable. -
(7710ARC version only)
• 1 SDI Program input and 1 SDI Fill input. Fill input may be keyed into output program side-panels -
(7710ARC-F version only)
• On screen display used to configure the operating modes
• Card Edge LED’s for signal presence, input and output modes, and module status
• VistaLINK®- enabled offering remote control and configuration capabilities via SNMP (using
VistaLINK®PRO or 9000NCP Network Control Panel). Available when modules are used with the
3RU 7700FR-C frame and a 7700FC VistaLINK®Frame Controller.

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7710ARC-2 Revision 1.1
VistaLINK®
Interface
WSS / AFD
and
HANC/VANC
Extractor
Card
Edge
Control
EQ &
S/P
Motion
Adaptative
De-interlacer
ARC
controller
HANC/VANC
Delay
WSS / AFD
WSS / AFD
and
HANC/VANC
Inserter
Card
Status
O
S
D
Reference
Timing
Generator
GENLOCK
Frame
Buffer
EQ &
S/P
Frame
Buffer
FRAME MI
GENLOCK
M
U
X
Control/
Indication
ARC P/S
Cable
Driver
PGM IN
PGM
BACKUP
PGM OUT 1
Cable
Driver PGM OUT2-3
GPI
Figure 1-1: 7710ARC Block Diagram
VistaLINK®
Interface
WSS / AFD
and
HANC/VANC
Extractor
Card
Edge
Control
EQ &
S/P
Motion
Adaptative
De-interlacer
ARC
controller
HANC/VANC
Delay
WSS / AFD
WSS / AFD
and
HANC/VANC
Inserter
Card
Status
O
S
D
Reference
Timing
Generator
GENLOCK
Frame
Buffer
EQ &
S/P
Frame
Buffer
PGM
FRAME MI
GENLOCK
Keyer
KEY
FILL
Control/
Indication
ARC
P/S
Cable
Driver
PGM IN
FILL IN
PGM OUT 1
Cable
Driver PGM OUT2-3
GPI
Figure 1-2: 7710ARC-F Block Diagram

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Revision 1.1 7710ARC-3
1.1. DEFINITIONS
Throughout this manual the following terms are used:
Image lattice: A two-dimensional array of pixels.
Image: The image lattice that represents the portion of the video picture area (frame) that is
being utilized for program content. The image area usually excludes letterbox bars and
pillarbox bars. May also be referred to as active image.
Image aspect ratio: The ratio of horizontal dimension to vertical dimension of the image area,
when displayed so that object shapes will retain their original shape (e.g. circles will
remain as circles).
Frame: The image lattice that represents the maximum active picture area permitted in the
video signal. For baseband digital systems it has the specific meaning of the picture
area where the V bits and H bits are both set to 0.
Source frame: The image lattice that represents the maximum active picture area permitted in the input
video signal.
Source frame aspect ratio: The ratio of horizontal dimension to vertical dimension of the source frame
when displayed so that object shapes within images that completely fill the source
frame will retain their original shape (e.g. circles will remain as circles).
Destination frame: The image lattice that represents the maximum active picture area permitted in the
output video signal. This rectangular area represents the result of the image conversion
process.
Destination frame aspect ratio: The ratio of horizontal dimension to vertical dimension of the
destination frame when displayed so that object shapes within images that completely
fill the source frame will retain their original shape (e.g. circles will remain as circles).
Bar: A region of a frame that is outside the image area. This region is often filled with a
uniform image (e.g. black or blue) or with an alternate image.
Cropping: The action of removing part of the image in order to change the shape of the image.
Filling: The action of scaling an image equally in both dimensions, and then filling unused
image areas with a bar in order to change the aspect ratio of the image. See “letterbox”
and “pillarbox”
Stretching (squeezing): The action of compressing or expanding one dimension of an image in order
to change the aspect ratio of the image.
Letterbox: Describes a frame where the image does not fill vertically, requiring bars without image
information at the top and/or the bottom of the image.
Pillarbox: Describes a frame that the image does not fill horizontally, requiring bars at the left
and/or right sides of the image. Some publications refer to pillarbox in a 16:9 display
area by the term “sidebar”.
Output video: The output video signal of the aspect ratio converter.

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7710ARC-4 Revision 1.1
Source video: The input video signal to the aspect ratio converter.
Viewport: A selected rectangular area of a source frame that will be used to create a destination
frame.

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Revision 1.1 7710ARC-5
2. INSTALLATION
The ARC Series modules come with a companion rear panel that occupies one slot in the frame. For
information on inserting the module into the frame refer to section 1.3 of the 7700FR module installation
guide.
Figure 2-1: 7710ARC and 7710ARC-F Rear IO Modules
2.1. VIDEO CONNECTIONS
PGM BACK-UP: This BNC connector is only available on the 7710ARC module, and is used as the
secondary or back-up program video input. This input can be selected as the
primary program video input source via the menu system. (See section 7.3.1)
FILL IN: This BNC connector is only available on the 7710ARC-F module, and is used as the
video fill input that is keyed into unused portions of the output raster. The video fill
must be frequency locked to the program video input.
PGM IN: This BNC connector is the primary program video input for 10-bit serial digital video
signals compatible with the SMPTE 259M.

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7710ARC-6 Revision 1.1
PGM OUT 1, 2, 3: These three BNC connectors are used for the program video output. The output
video standard is the same as the input video standard. The PGM OUT 1 output is
protected by a bypass relay, which will activate in the event that power to the
module is lost or the module is removed. PGM OUT 2 and PGM OUT 3 are
identical to PGM OUT 1 except that these outputs are not bypass relay protected.
GLCK IN: This BNC connector is used as the Genlock input. The Genlock signal may be
NTSC or PAL colour black. The reference input type is auto-detected.
"
The input program video and fill video must be in the same video standard as the
genlock colour black and clock locked (constant phase) with respect to the genlock
signal.
2.2. GENERAL PURPOSE INPUTS
The 6-pin terminal strip has four general purpose inputs (GPI’s). The GPI’s are active low with internal
pull-ups to +5 or +12 volts DC, set by jumper J16 (see section 8.3 and Figure 8-1). If an input is left
floating (not connected) it will not be activated. Lowering the GPI input to a voltage below 0.5 volts will
activate the input. GPI’s can be activated by simply connecting the GPI input pins to ground using a
button, switch, relay, or an open collector transistor.
6mA
+12V or +5V
GPI
10
Figure 2-2: Typical GPI Circuitry

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Revision 1.1 7710ARC-7
3. SPECIFICATIONS
3.1. SERIAL VIDEO INPUT
Standard: 270 Mb/s SMPTE 259M-C (525/625) – Auto-detect
Number of Inputs: 2
Connector: BNC per IEC 60169-8 Amendment 2.
Input Equalization: Automatic to 300m @ 270Mb/s with Belden 8281 (or equivalent) cable
Return Loss: >15 dB up to 270MHz
3.2. SERIAL VIDEO OUTPUTS
Standard: SMPTE 259M-C (270 Mb/s) – same as input
Number of Outputs: 3 Per module
Connector: BNC per IEC 60169-8 Amendment 2
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
3.3. GENLOCK INPUT
Standard: NTSC, PAL black or tri-level auto detect
Number of Inputs: 1
Connector: BNC per IEC 60169-8 Amendment 2
Impedance: Hi-Z or 75 Ω(jumper configurable)
Return Loss: >40dB up to 10MHz
3.4. GENERAL PURPOSE INPUTS
Number: 4 (configurable as inputs or outputs)
Type: Opto-isolated, active low with internal pull-ups to +5 or +12V (jumper settable)
Connector: 6-pin removable terminal block
Signal Level: Closure to ground
Inputs: User Preset select
3.5. ELECTRICAL
Voltage: +12VDC
Power: 13.25 Watts.
EMI/RFI: Complies with FCC regulations for class A devices.
Complies with EU EMC directive.
3.6. PHYSICAL
Number of slots:
7700 frame mounting: 2
7701 frame mounting: 1

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7710ARC-8 Revision 1.1
4. STATUS INDICATORS
The ARC series modules have 10 LED Status indicators on the card edge of the circuit board to show
operational status of the card at a glance (refer to Figure 4-1).
LOCAL
FAULT
MODULE
OK
7710ARC
Status
12 436578
Figure 4-1: LED Status Indicators
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), or if the Genlock
input standard does not match the program input video standard. The LOCAL FAULT
indication can also be reported to the frame through the FRAME STATUS jumper J4
(refer to Figure 8-1).
MODULE OK: This green LED indicates good module health. It will be ON when the inputs are valid
and the board power is good.
STATUS: These eight LEDs are used to indicate operational status of the program video inputs.
LED 1: This green LED reports the status of the FILL IN BNC on the 7710ARC-F module and
the PGM BACK-UP on the 7710ARC module. The LED will be ON when the module
has detected a valid standard definition (525 or 625) SD-SDI signal to be present.
LED 2: This orange LED reports the status of the FILL IN BNC on the 7710ARC-F module and
the PGM BACK-UP on the 7710ARC module. The LED will be ON if the module does
not detect a valid standard definition (525 or 625) SD-SDI signal to be present.
"
LED 1 and LED 2 are similar, in that they both detect for valid signal presence.
However, LED 2 provides detection at the entry point only, whereas LED 1 provides
detection at a deeper processing level. These two LEDs are mutually exclusive to
one another. For normal operation with valid inputs, LED 1 should remain ON and
LED 2 should remain OFF.
LED 3: This green LED reports the status of the PGM IN BNC on the module. The LED will be
ON when the module has detected a valid standard definition (525 or 625) SD-SDI
signal to be present.

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Revision 1.1 7710ARC-9
LED 4: This orange LED reports the status of the PGM IN BNC on the module. The LED will
be ON if the module does not detect a valid standard definition (525 or 625) SD-SDI
signal to be present.
"
LED 3 and LED 4 are similar, in that they both detect for valid signal presence.
However, LED 4 provides detection at the entry point only, where as LED 3
provides detection at a deeper processing level. These two LEDs are mutually
exclusive to one another. For normal operation with valid inputs, LED 3 should
remain ON and LED 4 should remain OFF.
LED 5: Not used.
LED 6: This green LED reports when the CPU is configuring the scaler.
LED 7: Not used.
LED 8: This green LED reports the status of the GENLOCK input signal (selected by the
External Genlock control – see section 7.3.5). The LED will be ON if the module
detects a valid Genlock signal to be present.

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7710ARC Series - SD Aspect Ratio Converter
7710ARC-10 Revision 1.1
5. CARD EDGE CONTROLS
The ARC Series modules are equipped with a toggle switch and a push button to allow the user to select
various functions and navigate through the menu system (refer to Figure 5-1).
Push
Button
Toggle
Switch
7710ARC
Figure 5-1: Card Edge Controls
6. OPERATION OVERVIEW
This section provides some concepts and understanding to take advantage of the ARC Series modules.
6.1. QUICK CONFIGURATION
The 7710ARC has been designed so that the most common aspect ratio conversions are available as
aspect ratio presets. To make use of these presets, set the Scaler Mode menu item on the ARC Control
menu to aspect ratio and select the appropriate preset from the AR menu (refer to section 7.4.1.1).
Choosing one of the quick select presets will adjust the remaining menus to the correct settings in order to
accomplish the desired conversion.
6.2. DETAILED CONFIGURATION OVERVIEW
For additional control of the conversion process there are two methods of control provided (set using the
Scaler mode menu item on the ARC Control menu). The first method, called Aspect Ratio mode, controls
the conversion process by selecting the input and output aspect ratios. See section 6.2.1 for a general
discussion of Aspect Ratio mode concepts and section 7.4.1 for information on how to use the specific
controls. The second method, called Manual mode, controls the conversion process by specifying the
pixels and lines of the input and output images. See section 6.2.4 for a general discussion of Manual
mode concepts and section 7.4.2 for information on how to use the specific controls.
6.2.1. Aspect Ratio Mode – General Concepts
For many applications you can avoid the manual calculations necessary to prevent the image from
distorting during the conversion process by configuring the aspect ratio converter in Aspect Ratio mode.
When the aspect ratio converter is in this mode, the pixel aspect ratio, and image aspect ratio are taken
into account while calculating where the input and output images are located.
There are a few terms that need to be understood in order to properly control the aspect ratio converter
while it is in Aspect Ratio mode. These terms are Source frame Aspect Ratio, Image Aspect Ratio,
Cropping, Stretching and Filling.

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6.2.1.1. Source Frame Aspect Ratio
The Source frame Aspect Ratio is the ratio of the horizontal dimension to the vertical dimension of the
maximum active picture area permitted in a video signal when displayed so that images, that completely
fill the source frame, will retain their original shape.
In the most general case, the Source frame lattice is simply a two-dimensional array of pixels used to
transport a sequence of images. The aspect ratio of the intended display device must be known when the
image is placed into the source frame lattice to accurately display the source frame without distortion of
the original image.
For example, HD video is commonly down converted using an anamorphic process that takes the full HD
raster and places it over the full SD raster. A circle contained within the HD source video will be seen as
an ellipse in the SD video, unless viewed on a 16:9 SD monitor. In this example, the SD video’s source
frame aspect ratio is 16:9.
Another example is in film to tape transfers where the film image may have an aspect ratio of 2.40. A
telecine may take this video and anamorphically compress it into a 1080i/59.94 video raster. Therefore, if
the film contained a circle after it is transferred to 1080i/59.94 video, the circle will look like a tall thin
ellipse. In this case, even though SMPTE274M specifies an aspect ratio of 16:9 for 1080i/59.94 video, the
source frame aspect ratio is 2.40.

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6.2.1.2. Image Aspect Ratio
The Input Image Aspect Ratio refers to the aspect ratio of the portion of the source frame that is being
utilized for program content when displayed on a display device that is the same aspect ratio as the
source frame. The Output Image Aspect Ratio refers to the aspect ratio of the portion of the destination
frame that is being utilized for program content when displayed on a display device that is the same
aspect ratio as the destination frame. The aspect ratio converter will either, take the full height of the
raster and calculate the width of the image based on the image aspect ratio, or it will take the full width
and calculate the height.
Figure 6-1 to Figure 6-4 provide four common examples of aspect ratio conversion using a 4:3 destination
frame aspect ratio. Note that the distorted circle shown in Figure 6-3, and the undesirable postage effect
in Figure 6-4, are the result of the aspect ratio conversion process being executed without careful
consideration.
4:3
Input Image
4:3
Desintation
Frame
Figure 6-1: 4:3 Full Screen Image
16:9
Input Image
4:3 Destination
Frame
Figure 6-2: 16:9 Letterbox Image
16:9
Anamorphic
Image
4:3
Destination
Frame
Figure 6-3: 16:9 Distorted Image
16:9
Input Image
4:3 Destination Frame
4:3 Image inside
16:9 Input image
Figure 6-4: 4:3 Postage Stamp

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Revision 1.1 7710ARC-13
Figure 6-5 to Figure 6-8 provide four common examples of aspect ratio conversion using a 16:9
destination frame aspect ratio. Note that the distorted circle shown in Figure 6-7, and the undesirable
postage effect in Figure 6-8, are the result of the aspect ratio conversion process being executed without
careful consideration.
16:9
Input Image
16:9
Destination
Frame
Figure 6-5: 16:9 Full Screen Image
4:3
Input Image
16:9
Destination
Frame
Figure 6-6: 4:3 Side Panels
4:3
Input Image
16:9
Destination
Frame
Figure 6-7: 4:3 Distorted Image
16:9 image inside 4:3 Input Image
16:9
Destination
Frame
Figure 6-8: 16:9 Postage Stamp

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6.2.2. Relationship Between Input and Output Image
Both card input and output images follow the model outlined above in section 6.2.1.2. The source frame,
input image, destination frame and output image aspect ratios are totally independent of each other.
When the input image aspect ratio is different from the output image aspect ratio, the input image is
converted to “fit” into the output image aspect ratio using 1 of the 3 following methods:
• Cropping
• Stretching
• Filling
The following descriptions and diagrams will illustrate cropping, stretching and filling based on the
following reference input image:
Dashed Line shows
edge of "Frame"
which could also be
referred to as the
production aperture of
the video.
Solid Line shows
extent of the "Image"
which is the portion of
the frame that is being
utilized for program
content .
Circles represent
image content and
show whether the
image has been
distorted, or cropped
during resizing
Figure 6-9: Reference Image
6.2.2.1. Cropping
In cropping mode, parts of the input image are removed to make it "fit" into the output image. The aspect
ratio of objects inside the output image area is preserved (i.e. circles remain as circles, squares remain as
squares, etc.).
If the input image aspect ratio is greater than the output image aspect ratio, the entire height of the input
image is used and only a portion of the width is used. When an equal amount of the image is removed on
each side it is commonly referred to as centre crop or side cut mode.
Output Image - Crop
Figure 6-10: Large to small aspect ratio crop - Side Cropping