ARC20-2C_MAN.pdf

ARC20-2C

Broadcast quality bi-directional aspect ratio converter with dual composite outputs

____________________________________________

TECHNICAL MANUAL ARC20 Broadcast quality bi-directional aspect ratio converter

Lange Wagenstraat 55 NL-5126 BB Gilze The Netherlands Phone: +31 161 850 450 Fax: +31 161 850 499 E-mail: Info@axon.tv Web: www.axon.tv

WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE ● ALWAYS disconnect your entire system from the AC mains before cleaning any component. The product frame (SFR18 or SFR04) must be terminated with three-conductor AC mains power cord that includes an earth ground connection. To prevent shock hazard, all three connections must always be used. ● NEVER use flammable or combustible chemicals for cleaning components. ● NEVER operate this product if any cover is removed. ● NEVER wet the inside of this product with any liquid. ● NEVER pour or spill liquids directly onto this unit. ● NEVER block airflow through ventilation slots. ● NEVER bypass any fuse. ● NEVER replace any fuse with a value or type other than those specified. ● NEVER attempt to repair this product. If a problem occurs, contact your local Axon distributor. ● NEVER expose this product to extremely high or low temperatures. ● NEVER operate this product in an explosive atmosphere.

Warranty: Axon warrants their products according to the warranty policy as described in the general terms.

That means that Axon Digital Design BV can only warrant the products as long as the serial numbers are not removed.

Copyright © 2001 – 2006 AXON Digital Design B.V. Date created: 17-03-03 Date last revised: 01-12-2006 Axon, the Axon logo and Synapse are trademarks of Axon Digital Design B.V. This product complies with the requirements of the product family standards for audio, video, audio-visual entertainment lighting control apparatus for professional use as mentioned below.

EN60950 EN55103-1: 1996 EN55103-2: 1996

Axon Digital Design

ARC20

Tested To Comply With FCC Standards

Safety Emission Immunity

This device complies with part 15 of the FCC Rules Operation is subject to the following two conditions: (1) This device may cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation.

FOR HOME OR OFFICE USE

1

Table of Contents Chapter 1

Chapter 2

Introduction to Synapse An introduction to Synapse

3

Local Control Panel

3

Remote Control Capabilities

3

Unpacking and Placement

4

Unpacking

4

Locating the card

Chapter 3

A Quick Start

4

5

When powering-up

5

Default settings

5

Changing settings and parameters

5

Front Panel Control

5

Example of changing parameter using Front Panel control

6

Synapse SetUp Software

7

Menu Structure Example

Chapter 4

3

The ARC20 card

7

8

Introduction

8

Chapter 5

Settings Menu

10

Chapter 6

Status Menu

18

Chapter 7

Events Menu

20

Chapter 8

LED Indication

22

Chapter 9

Block Schematic

23

Chapter 10

Connector panel

24

Chapter 11

Specifications

26

Appendix One

27

2

1 Introduction to Synapse An Introduction to Synapse is a modular system designed for the broadcast industry.

Synapse High density, intuitive operation and high quality processing are key features of this system. Synapse offers a full range of converters and processing modules. Please visit the AXON Digital Design Website at www.axon.tv to obtain the latest information on our new products and updates.

Local Control Panel The local control panel gives access to all adjustable parameters and provides status information for any of the cards in the Synapse frame, including the Synapse rack controller. The local control panel is also used to back-up and restore card settings. Please refer to the RRC18, RRC10 and RRC04 manuals for a detailed description of the local control panel, the way to set-up remote control over IP and for frame related settings and status information.

Remote Control The remote control options are explained in the rack controller Capabilities (RRC18/RRC10/RRC04) manual. The method of connection to a computer using Ethernet is described in the RRC manual.

!

CHECK-OUT: “SYNAPSE SET-UP� SOFTWARE WILL INCREASE SYSTEM FLEXIBILITY OF ONE OR MORE SYNAPSE FRAMES

Although not required to set up a Synapse frame, you are strongly advised to use a remote personal computer or laptop PC with the Synapse set up software as this increases the ease of use and understanding of the modules.

3

2 Unpacking and Placement Unpacking The Axon Synapse card must be unpacked in an anti-static environment. Care must be taken NOT to touch components on the card – always handle the card carefully by the edges. The card must be stored and shipped in anti-static packaging. Ensuring that these precautions are followed will prevent premature failure from components mounted on the board.

Locating the card The Synapse card can be placed vertically in an SFR18 frame or horizontally in an SFR04 frame. Locate the two guide slots to be used, slide in the mounted circuit board, and push it firmly to locate the connectors.

Correct insertion of card is essential as a card that is not located properly may show valid indicators, but does not function correctly.

NOTE: On power up all LED’s will light for a few seconds, this is the time it takes to initialise the card.

4

3 A Quick Start When Powering-up On powering up the Synapse frame, the card set will use basic data and default initialisation settings. All LED’s will light during this process. After initialisation, several LED’s will remain lit – the exact number and configuration is dependant upon the number of inputs connected and the status of the inputs.

Default settings In its default condition, the ARC20 will act as an aspect ratio converter set to pass through the input signal without a change in aspect ratio.

Changing settings The front panel controls or the Synapse Set-Up Software can be and parameters used to change settings. An overview of the settings can be found in chapter 5, 6 and 7 of this manual.

Front Panel Control Front Panel Display and Cursor [No Alarms]

Settings are displayed and changed as follows; Use the cursor ‘arrows’ on the front panel to select the menu and parameter to be displayed and/or changed.

Press ► Press ◄ Press ▲ Press ▼

To go forward through the menu structure.

To go back through the menu structure.

To move up within a menu or increase the value of a parameter.

To move down through a menu or decrease the value of a parameter.

NOTE: Whilst editing a setting, pressing ► twice will reset the value to its default.

5

Example of With the display as shown below changing parameters using RRC18 [Select Card] front panel control >S01=ARC20

Pressing the ► selects the ARC20 in frame slot 01.

The display changes to indicate that the ARC20 has been selected.

In this example the Settings menu item is indicated.

ARC20[Select Menu] >Settings Pressing the ► selects the menu item shown, in this example Settings.

(Pressing ▲ or ▼ will change to a different menu eg Status, Events).

The display changes to indicate that the ARC20 Settings menu item SDI-Format has been selected and shows that it current setting is Auto.

ARC20 [Settings] >SDI-Format=Auto Pressing the ► selects the settings item shown, in this example SDI-Format.

(Pressing ▲ or ▼ will change to a different setting, eg Mode, H-Delay).

The display changes to indicate that the ARC20 Edit Setting menu item SDI-Format has been selected.

ARC20[Edit Setting] SDI-Format>Auto To edit the setting of the menu item press ▲ or ▼.

All menu items can be monitored and/or changed in this way.

Changing a setting has an immediate effect.

6

Synapse SetUp Synapse SetUp Software can be used to change the settings of Synapse modules from a PC, either locally or remotely. The Software software enables communication based on TCP/IP between the setup PC and Synapse frames/modules.

Each Synapse frame is addressed through its rack controller’s unique IP address, giving access to each module, its menus and adjustment items. The Synapse SetUp software has access to data contained within the Synapse module and displays it on a GUI. The software has an intuitive structure following that of the module that it is controlling.

Having selected the desired Frame and Module from the GUI Synapse Network View, select the menu item that you wish to open. Opening the menu item gives a complete list of available properties with their associated Value.

For example to change a setting e.g. SDI-Format, select SDIFormat form the list of settings by ‘double clicking’ to open a dialogue box. The dialogue box allows parameters to be changed or set to default value. On completion close the dialogue box.

Menu Structure Example

Slot Module ▲ ▲ S02 ▲ S0 1 ▼ S00

Item

ARC20 ► RRC18

Identity ▲ Setting s ▼ Status ▼ Events

Parameter

►

SDIFormat ▼ Mode ▼ Ref-Input ▼ H-Delay ▼ ▼

Setting

►

Auto ▼ 625 ▼ 525

NOTE: Further information about Front Panel Control and Synapse Set Up Software can be obtained from the RRC18 and RRC04 operational manuals.

7

4 The ARC20 Card Introduction The ARC20 features high quality and optimized conversion between different aspect ratios like 4:3, 14:9 and 16:9 with full 10bit resolution (the internal processing however is more precise).

High quality vertical filtering is reached by using a temporal (3 fields), 12 lines FIR filter.

Aspect Ratio The ARC20 can convert between a wide range of aspect ratios, handling form 4:3 to 21:9. The aspect ratios can be switched using WSS, VI, GPI or manual control.

SDI interfaces Input and outputs are SDI, 10-bit serial digital video (270 Mb). No genlock reference is needed because the total delay of the ARC20 is fixed.

Analog Monitoring An analog preview monitoring output is provided with several comprehensive functions.

Transparent ANC Any data (like embedded audio) in the horizontal and vertical handling blanking periods is reinserted on the output with the correct delay.

Also included is full EDH processing.

16 presets Sixteen presets, which contain the variables for different conversion modes, can be stored in non-volatile memory. The presets can be selected manually, by GPI contacts or automatically, based on Video Index information or Wide Screen Signaling information.

Fixed Propagation The total delay is 1 frame default but can be adjusted up to 7 lines Delay less than one frame.

Video Index The Video Index data is in accordance with the SMPTE Recommended Practice RP186. The ARC20 supports Class 1.1 only.

Class 1.1 is mandatory and holds information required to display the signal.

8

Class 1.1 3 octets

Class 1.2

1

3 octets

Class 1.3

1

3 octets

Class 2.1

1

3 octets

Class 2.2

1

3 octets

Class 2.3

1

3 octets

1

EAV

Unused

CRCC

Class 3

CRCC

Class 2

CRCC

Class 1

CRCC

24 octets

CRCC

12 octets

CRCC

SAV

12 octets

Back planes The ARC20 can be used with the BPX03, BPL01 and BPX03 backplane. When BPL01 is used GPI contacts are unavailable.

Miscellaneous The ARC20 cards fit into the Axon SFR04 & SFR18 rack.

LED’s on the front of the board indicate the presence Video Reference, Input signal, Connection & Processor Errors.

The ARC20 can be controlled by Axon Synapse set-up software.

9

5 Settings Menu Introduction The settings menu displays the current state of each setting within the ARC20 and enables the item to be changed or adjusted.

Settings can be changed using the front panel of the Synapse frame (SFR18 or SFR04) or Synapse SetUp software.

Please refer to chapter 3 for information on the Synapse front panel control and Synapse SetUp software.

SDI-Format The SDI-format menu item selects the input video standard, 525, 625 and Auto can be selected.

The default setting is Auto.

Control The Control menu item determines how the ARC20 is controlled. The settings of Control are, Manual, Video Index, WSS-std, WSS-ext, GPI-priori, GPI-binary and GPI-Slave (if used in combination with Axon GPI16 card).

GPI-priori: when the local GPI input is used, the GPI contact_1 is routed to Preset_1 (up to GPI contact_8 to Preset_8 - See GPI-priori table) GPI-binary sets the presets by using the local GPI-contacts in a binary way (See table below).

The default setting is Manual.

The following table gives the preset selection when Control is set to Video Index or WSS-ext.

Incoming Format

AFD-only Menu Setting

Preset Selection

4:3_0

On/Off

1

4:3_1

On/Off

2

4:3_2

On/Off

3

4:3_3

On/Off

4

4:3_4

On/Off

5

4:3_5

On/Off

6

4:3_6

On/Off

7

4:3_7

On/Off

8

10

16:9_0

Off

9

16:9_0

On

1

16:9_1

Off

10

16:9_1

On

2

16:9_2

Off

11

16:9_2

On

3

16:9_3

Off

12

16:9_3

On

4

16:9_4

Off

13

16:9_4

On

5

16:9_5

Off

14

16:9_5

On

6

16:9_6

Off

15

16:9_6

On

7

16:9_7

Off

16

16:9_7

On

8

The following table gives the preset selection when Control is set to WSS-std.

Incoming Standard

Preset Selection

Standard 1

1

Standard 2

2

Standard 3

3

Standard 4

4

Standard 5

5

Standard 6

6

Standard 7

7

Standard 8

8

11

GPI_BINARY table Select Preset

Gpi_1 contact

Gpi_2 contact

Gpi_3 contact

Gpi_4 contact

Preset_1

open

open

open

open

Preset_2

closed

open

open

open

Preset_3

open

closed

open

open

Preset_4

closed

closed

open

open

Preset_5

open

open

closed

open

Preset_6

closed

open

closed

open

Preset_7

open

closed

closed

open

Preset_8

closed

closed

closed

open

Preset_9

open

open

open

closed

Preset_10

closed

open

open

closed

Preset_11

open

closed

open

closed

Preset_12

closed

closed

open

closed

Preset_13

open

open

closed

closed

Preset_14

closed

open

closed

closed

Preset_15

open

closed

closed

closed

Preset_16

closed

closed

closed

closed

GPI_PRIORI TABLE O = OPEN 1 = CLOSED X = DON’T CARE CONTACT NUMBER / GPI# 8 7

6

5

4

3

2

1

0 0

0

0

0

0

0

0

Hold previous

0 0

0

0

0

0

0

1

Preset 1

0 0

0

0

0

0

1

X Preset 2

0 0

0

0

0

1

X X Preset 3

0 0

0

0

1

X X X Preset 4

0 0

0

1

X X X X Preset 5

0 0

1

X X X X X Preset 6

0 1

X X X X X X Preset 7

1 X X X X X X X Preset 8 12

Preset The ARC20 has 16 factory preset aspect ratio conversion modes they are as follows; Preset No.

Menu

Function

Conversion Mode

1

#1

Pass through

12F12 – 12F12

2

#2

4:3 to 16:9 as 4:3 pillarbox

12F12 – 12P16

3

#3

4:3 to 16:9 as 14:9 pillarbox

12F12 – 14P16

4

#4

4:3 to 16:9 as 16:9 full field

12F12 – 16F16

5

#5

16:9 to 4:3 as 16:9 letterbox

16F16 – 16L12

6

#6

16:9 to 4:3 as 14:9 letterbox

16F16 – 14L12

7

#7

16:9 to 4:3 as 4:3 full field

16F16 – 14F12

8

#8

Pass through

12F12 – 12F12

9

#9

Pass through

12F12 – 12F12

10

#10

Pass through

12F12 – 12F12

11

#11

Pass through

12F12 – 12F12

12

#12

Pass through

12F12 – 12F12

13

#13

Pass through

12F12 – 12F12

14

#14

Pass through

12F12 – 12F12

15

#15

Pass through

12F12 – 12F12

16

#16

Pass through

12F12 – 12F12

The default setting of Preset is #1.

NOTE: If the menu item is preceded by a ‘#’ sign, it is possible to add this setting to a preset. The presets are stored in memory.

#Inp-Format The menu item #Inp-Format selects the aspect ratio of the input signal. The aspect ratio settings are as follows; Setting

Aspect Ratio

12F12

4:3 Full Field

13L12

13:9 picture displayed Letterbox in 4:3 environment

14L12

14:9 picture displayed Letterbox in 4:3 environment

15L12

15:9 picture displayed Letterbox in 4:3 environment

16L12

16:9 picture displayed Letterbox in 4:3 environment

21L12

21:9 picture displayed Letterbox in 4:3 environment

12P16

4:3 picture displayed Pillarbox in a 16:9 environment

13P16

13:9 picture displayed Pillarbox in a 16:9 environment

14P16

14:9 picture displayed Pillarbox in a 16:9 environment

15P16

15:9 picture displayed Pillarbox in a 16:9 environment

16F16

16:9 Full Field

21L16

21:9 picture displayed Letterbox in 16:9 environment

21F21

21:9 Full Field

The default setting of #Inp-Format is 12F12.

13

#Out-Format The menu item #Out-Format selects the aspect ratio of the output signal. The aspect ratio settings are as follows; Setting

Aspect Ratio

12F12

4:3 Full Field

13L12

13:9 picture displayed Letterbox in 4:3 environment

14L12

14:9 picture displayed Letterbox in 4:3 environment

15L12

15:9 picture displayed Letterbox in 4:3 environment

16L12

16:9 picture displayed Letterbox in 4:3 environment

21L12

21:9 picture displayed Letterbox in 4:3 environment

12P16

4:3 picture displayed Pillarbox in a 16:9 environment

13P16

13:9 picture displayed Pillarbox in a 16:9 environment

14P16

14:9 picture displayed Pillarbox in a 16:9 environment

15P16

15:9 picture displayed Pillarbox in a 16:9 environment

16F16

16:9 Full Field

21L16

21:9 picture displayed Letterbox in 16:9 environment

21F21

21:9 Full Field

The default setting of #Out-Format is 12F12.

#Pan This item sets the horizontal position of the picture. The value range is from -180.00px to 180.00px (pixels). . The increment is 1 pixel steps.

The default value is 0

#Tilt This item sets the vertical position of the picture. The value range is from -100.00ln to 100.00ln (lines). The increment is 1ln.

The default value is 0

#H_blank The menu item #H_Blank set the amount by which the picture is blanked horizontally. #H_Blank has an adjustment range of 0 px (pixels) to 199 px.

The default setting is 0 px (pixels).

#V_blank The menu item #V_Blank set the amount by which the picture is blanked vertically. #V_Blank has an adjustment range of 0 ln (TV lines) to 130 ln.

The default setting is 0 ln

14

(TV lines)

#Filter This menu item selects the filter mode for Video, Film, Mixed, Film_Eff and Field. Filter modes have an effect when the vertical filtering is active.

Video mode is the default setting and is normally used. This filter mode processes video fields. In order to improve the vertical resolution of the video being processed, three video fields are used.

Film mode is used for video material that has been scanned from a film source. The ARC takes advantage of the fact that there is no motion between fields. Two fields are interlaced in advance of the vertical filter to give a non interlaced frame, this improves vertical resolution.

Mixed mode utilizes a combination of filter coefficients from ‘Film’ mode and ‘video’ mode to reduce ghosting artefacts that result from ‘post production effects’ and aspect ratio changes.

Film_Eff (Film Effect) mode used to give a ‘film scanned’ look to video material. In this mode the vertical filter coefficients change with the same sequence as in film-mode.

Field mode can be used to process fast moving images. A single field is used to process the output. Therefore ghosting can be prevented, however because only one field is used, the quality of a slower moving picture is not as good when using Video mode.

REMARK: For a complete description of the different filter modes please refer to Appendix One.

#VI-Insert The Video Index insertion menu enables the generation of Video Index (VI) information. Video Index is used to trigger cascaded equipment that process wide screen manipulation, aspect ratio converters for example. #VI-Insert can be set to 4:3_0 to 4:3_7, 16:9_0 to 16:9_7 and Off. The default setting is 4:3_0.

#WSS-Insert The WSS insertion menu selects the WSS mode. Off, Standard, Extended and Blank can be set. The WSS extended is a special mode that uses the physical structure of WSS but with a VI like data settings.

The default setting is Off.

#WSS-Std-Ins #WSS-Std-Ins is activated if Standard is selected in the setting menu item #WSS-Insert.

15

The WSS standard has 16 settings 8 for video and 8 for film.

Selection is made between 1_vid to 8_vid, or 1_flm to 8_flm and NA. The default setting is 1_vid.

#WSS-Ext-Ins #WSS-Ext-Ins is activated if Extended is selected in the setting menu item #WSS-Insert.

WSS-Ext-Ins sets the WSS extended format. The setting can be within the range 4:3_0, 4:3_1, 4:3_2, etc., to 16:9_0, 16:9_1, 16:9_2 etc. and Off. The default setting is 4:3_0.

#WSS-GPI-Ins #WSS-GPI-Ins is activated if Extended is selected in the setting menu item #WSS-Insert.

The #WSS-GPI-Ins setting sets the programmable GPIs that are supported by WSS. selection of 4 GPI can be made: ____, ___4, 1__4. 12_4 etc to1234.

The default setting is ____.

#GPI-Out-Slv The menu item #GPI-Out-Slv selects which GPI outputs of the slave GPI16 card are used. The available GPI outputs can be set between #1 to #16.

The default setting is #1.

Prvw_Config Prvw_Config determines the configuration of the preview output connectors.

Cv_Y_C:

Composite Video, and separate Y/C

G_B_R:

Component GBR

Y_Cb_Cr:

Component YCbCr

The default setting is Cv_Y_C.

Prvw_Signal The settings menu item Prvw_Signal allows selection between the Input and the Processed signal fro the preview output.

The default setting is Input.

Prvw_Marker The settings menu item Prvw_Marker sets the condition of the preview marker. The setting of Prvw_Marker are On or Off and movement speeds S1 to S7.

The default setting is On. 16

EDH-Gen The EDH generator inserts EDH into the output signal. This setting allows the user to switch the built in EDH generator On or Off. The default setting is On.

EDH-Det This setting allows the user to choose between Active-Picture (Active-P) or Full-Field (Full-F) EDH detection.

The default setting is Full-F.

Proc-Delay Proc-Delay enables the delay of the ARC20 to be adjusted between one Frame and one Frame-7ln in steps of 1 line.

The default delay of the ARC20 is 1 Frame.

Blank-ANC The Blank-ANC setting determines the ancillary blanking mode.

Off, H, V or H+V are the available settings. The Blank-ANC setting blanks the ancillary data in the horizontal and/or vertical blanking interval.

The default setting is Off.

CC_525 When used with 525 line signals, the setting menu item CC_525 enables the closed captioning lines L21 or L21+L22 and the corresponding lines in field two to pass transparently through the ARC20. These lines are not scaled or filtered.

The default setting of CC_525 is Off.

AFD-only ADF-only allows the ARC20 to react only to changes in the ADF (Active Format Descriptor) values in the Video Index or WSS-ext – see above setting items. The settings of AFD-Only are On and Off. The default setting is Off.

No-Control The NO-Control item allows you, when no VLI or WSS data is present, to switch back to a selectable preset value.

HOLD: latest VLI or WSS is hold.

17

#1‌.#16 indicates to what preset is switched, when no VLI or WSS data is present.

18

6 Status Menu Introduction The status menu indicates the current status of each item listed below.

SDI-Input This status item indicates the presence of a valid Serial video signal at the SDI input. SDI-Input indicates if an input signal is NA (not available) or Present.

Format-Det 625 Lines and 525 Lines standards can be detected as the valid input signal format, 625/50 and 525/60 are recognised as valid inputs.

EDH-Stat EDH-Stat, indicates the status of the EDH within the incoming SDI signal.

OK is indicated if the status of the detected EDH does not indicate errors.

UES is shown if an EDH data block is not present.

EDA is displayed if an EDH error has previously been detected by another card in the SDI chain.

EDH is displayed if a previously undetected EDH error is detected by this device.

GPI-in-local The status item GPI-in-Local indicates which of the eight local GPI inputs are activated. The status item displays #1 ..#8.

GPI-in-slave The status item GPI-in-slave indicates which of the slave GPI inputs are activated (up to 16). The status item displays #1 ..#16.

VI-Detect This item displays the VI format that has been detected. 4:3_0 to 4:3_7 and 16:9_0 to 16:9_7 and NA are the modes that can be detected.

WSS-Std-Det Detection of any WSS standard signals is shown in this menu.

WSS-Ext-Det Detection of any WSS Extended formats is shown here.

19

WSS-GPI-Det Detection of any WSS GPI contact closures are shown here.

20

7 Events Menu Introduction An event is a special message that is generated on the card asynchronously. This means that it is not the response to a request to the card, but a spontaneous message.

What is the Goal of The goal of events is to inform the environment about a changing an event? condition on the card. A message may be broadcast to mark the change in status. The message is volatile and cannot be retrieved from the system after it has been broadcast. There are several means by which the message can be filtered.

ARC20 Events The events reported by the ARC20 are as follows; Announcements Announcements is not an event. This item is only used for switching the announcement of status changes on/off. 0=off, other =on

Input Input can be selected between 0 .. 255. 0= no event, 1..255 is the priority setting.

EDH status EDH status can be selected between 0 .. 255. 0= no event, 1..255 is the priority setting.

What information is The message consists of the following items; available in an 1) A message string to show what has happened in text, for event? example: “INP_LOSS”, “REF_LOSS”, “INP_RETURN”.

2) A tag that also shows what happens, but with a predefined number: e.g. 1 (= loss of input), 2 (= loss of reference), 129(= 1+128 = return of input). For a list of these predefined tags see the table on the next page.

3) A priority that marks the importance of an event. This value is defined by the user and can have any value between 1 and 255, or 0 when disabled.

4) A slot number of the source of this event.

The Message String The message string is defined in the card and is therefore fixed. It may be used in controlling software like Synapse Set-up to show the event.

21

The Tag The tag is also defined in the card. The tag has a fixed meaning.

When controlling or monitoring software should make decisions based on events, it is easier to use the tag instead of interpreting a string. The first implementation is the tag controlled switch in the GPI16.

In cases where the event marks a change to fault status (e.g. 1 for Loss of Input) the complement is marked by the tag increased by 128 (80hex) (e.g. 129 (81hex) for Return of Input).

Defining Tags The tags defined for the ARC20 are: Event Menu Item Announcements

Tag 0 or NA

0 or NA

Input

01hex=INP_LOSS

81hex=INP_RETURN

EDH-Status

03hex=EDH_ERROR 83hex=EDH_OK

Description Announcing of report and control values primary input lost or returned EDH error occurred

The Priority The priority is a user-defined value. The higher the priority of the alarm, the higher this value. Setting the priority to Zero disables the announcement of this alarm. Alarms with priorities equal or higher than the Error Threshold setting of the RRC will cause the error LED on the Synapse rack front panel to light.

The Address Together with the message string or the tag, the slot number or address of the card is relevant to be able to assign the event to a certain card.

22

8 LED Indication Error LED The error LED indicates an error if the internal logic of the ARC20 card is not configured correctly or has a hardware failure.

Input LED This LED indicated the presence of a valid SDI video signal on the input.

Reference LED Indicated the presence of a valid reference signal on the selected reference input connector (ref-1 or ref-2).

ANC Data LED Indicates the presence of embedded audio within the SDI input signal.

Data Error LED This LED indicate two different types of error: -

ANC (embedded audio) checksum error.

-

EDH error

Connection LED This LED illuminates after the card has initialised. The LED lights for 0.5 seconds every time a connection is made to the card.

23

9 Block Schematic

ARC20

SDI IN+ EMBEDDED AUDIO

+

SDI OUT RECLOCKED

ANC DELAY

Eq

+

EDH processing VI/WSS

WSS/VI DETECT

3-FIELD STORE

+

-

SDI OUT PROCESSED

SDI OUT PROCESSED

VERTICAL HORIZONTAL SCALER R/Pr/Y

G/Y/CVBS

ENCODER 3/2 DETECT

FIELD SEQUENCER B/Pb/C

GPI IN (8) GPI OUT (2)

PRESET CONTROL

PREVIEW CAGE INSERT

µP

Rack controller INTERNAL SYNAPSE BUS

24

10 Connector Panel The ARC20 can be used with the following backplane: BPX03.

BPL01 and BPL08

RECL. OUT

SDI. IN

GPI Input Connector

PROCESSED OUT

1

GPI IN 1

2

GPI IN 2 6 GPI IN 3

+5 VOLT

1 11

GPI IN 4

7

GPI IN 5

12

GPI IN 6

3

G/Y/Cv

2

8

13

B/Cb/Y

GPI IN 7

4

R/Cr/C

GPI IN 8

15P SUB.D FEM.

GPI I/O

9 14 GPI OUT 1 GPI OUT 2

10 5

GROUND

15

Connector type: 15-pin high density ‘D’type

ARC20

BPX03 J1 = SDI input J2 = SDI reclocked out J3 = SDI proccesed out J4 = SDI proccesed out J5 = G/Y/Cv J6 = B/Cb/Y J7 = R/Cr/C 25

J1

J2

J3

J4

PIN number

description

1 and 2

Make loop

GPI 1

7

Connect to ground pin 6

GPI 2

3

Connect to ground pin 6

GPI 3

8

Connect to ground pin 6

GPI 4

4

Connect to ground pin 6

GPI 5

9

Connect to ground pin 6

GPI 6

5

Connect to ground pin 6

J5

J6

!Unused inputs and outputs must be terminated with the correct impedance!

J7

J8

BPL08 J1 = SDI input J2 = SDI reclocked out J3 = SDI proccesed out J4 = SDI proccesed out J5 = CVBS J6 = CVBS J7 = Not connected J8 = GPI input

Bpl01

Same connections , GPI not possible

26

Appendix One Filter Modes There are four different filter-modes1. The two main modes are “VIDEO” and “FILM”. For normal video sources (camera, VCR etc.) the “VIDEO” filter mode is used.

The “FILM” mode is especially made for video-material scanned from a film. There is no motion between two fields because they are both scanned from one frame. To adapt the vertical scaling for the film sources, the vertical resolution is improved substantially.

The other two modes “Mixed” and “Film-Eff” are: a mix between video/film and a film effect filter.

1

These filter-modes works only temporally and therefore have no effect on horizontal scaling.

Video mode The “VIDEO” mode is the default and most used filter mode.

This filter mode uses three fields for the calculations of the processed field and is explained by the following picture.

field n-1 Field n

Field n

Field n+1

Field n+1

Field n+2

3 fields are used to improve the vertical resolution. For the calculation of the output field n, the three fields n-1, n and n+1 are used. The fields n-1 and n+1 are only used for improvement so the main influence is from field n.

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Film mode The “FILM” mode is especially made for video-material scanned from a film.

The ARC20 takes advantage of the fact that there is no motion between two fields because they are both scanned from the same frame. Before the vertical filter the two interlaced fields are combined to a non-interlaced frame. This improves the vertical resolution substantially.

Film usually is recorded at 24 Frames Per Second (FPS).

When transferring to 625 lines / 50 fields per second video standard (625/50) the film is played back 4% faster and each film-frame is mapped into 2 video fields

24 – 25 FPS transfer Film Frame =

Video = 25FPS ARC Input

Frame A

Frame B

28

Used fields

ARC Output

field Ao

Field Ao

Field Ae

Field Ae

Field Bo

Field Bo

Field Be

Field Be

When transferring to 525 lines / 60 fields per second video standard (525/60) the 3/2 pulldown is used.

3/2 PULLDOWN SEQUENCE Film Frame =

Video = 30FPS ARC Input

Frame A

Frame B

Frame C

Used fields

ARC Output

Field Ao

Field Ao

Field Ae

Field Ae

Field Ao

Field Ao

Field Be

Field Be

Field Bo

Field Bo

Field Ce

Field Ce

Field Co

Field Co

Field Ce

Field Ce

The ARC20 automatically detects this 3/2 pulldown sequence

29

Mixed mode The 3 field filtering of video mode implicates that at a sudden change in picture contents (a cut or scene change) can cause a little bit of “ghosting artefacts”. For just converting live signals or complete tapes this is no problem. If you have to edit the material after aspect ratio conversion the “ghosting artefacts” can cause a “ghost” from a field which have to be cut out and causes a intolerable fault.

The mixed mode uses the same sequence as in “Film”-625/50 mode and uses the filter coefficients of the video mode.

field Ao

Field Ao

Field Ae

Field Ae

Field Bo

Field Bo

Field Be

Field Be

For the calculation of field Ao, only the field Ae is used for improvement and the main influence is from field Ao. Editing after aspect ratio conversion on a frame-by-frame basis there are no “ghosting artefacts”. Care must be taken when the editing is on a field by field basis.

Film-effect mode The film-effect mode is made for a normal video source that, after conversion, it looks like that the material is scanned from a film. In this mode the vertical filter coefficients change with the same sequence as in film-mode.

Field mode

The field mode is made for fast moving pictures. When there is a lot of movement, this mode will process the output without ghosting.

30

31