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Q-Down-A-AFD
Broadcast down converter and
distribution amplifier for embedded
audio with Active Format Descriptor
Crystal Vision Ltd., Lion Technology Park, Station Road East, Whittlesford, Cambridge, CB22 4WL, England.
E-mail: sales@crystalvision.tv
Website: www.crystalvision.tv
Tel: +44(0) 1223 497049
Fax: +44(0) 1223 497059
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Summary of Contents for Crystal Vision Q-Down-A-AFD
- Page 1 Q-Down-A-AFD Broadcast down converter and distribution amplifier for embedded audio with Active Format Descriptor Crystal Vision Ltd., Lion Technology Park, Station Road East, Whittlesford, Cambridge, CB22 4WL, England. E-mail: sales@crystalvision.tv Website: www.crystalvision.tv Tel: +44(0) 1223 497049 Fax: +44(0) 1223 497059...
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Page 2: Table Of Contents
Navigating card edge menus Card edge configuration Menu tree Status menu Video menu Alarms menu Preset menu and factory reset Using the front control panel Module selected Updating the display The Q-Down-A-AFD active panel menu structure Q-Down-A-AFD User Manual R1.2 23/04/09... - Page 3 Crystal Vision Q-Down-A-AFD User Manual R1.2 Active control panel menus The Status menu The video menu The alarm menu Preset menu and factory reset Statesman Statesman operation Statesman operation Status Video properties Presets and Alarms Factory reset Trouble shooting Card edge monitoring...
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Page 4: Introduction
The video delay can be selected from minimum, fixed or one frame. With a full screen HD input the short processing delay is 16 SD lines. Q-Down-A-AFD also additionally provides a variable video delay of up to one frame in SD, adjustable in one line steps. - Page 5 2 and 3 are present on the input these will appear as groups 2 and 3 on the output. This will also be true when an SD input is connected to the Q-Down-A-AFD unless the reclocker is set to bypass mode. When bypass is selected all input groups will appear in their respective positions on the output.
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Page 6: Hardware Installation
2 Hardware installation 2.1 Module configuration There are five user settable links on the Q-Down-A-AFD. These are - PL9 and PL10 on the PCB top side and PL6, 7 and 8 on the bottom side. The PL9 and PL10 are used for selective NTSC pedestal and Betacam levels. - Page 7 Y/C output format is selected the third output will give CVBS. Engineering LEDs These LEDs are included for diagnostic purposes and are not visible from the front of the frame. Illuminated Not Illuminated LED3 Input present LED4 Board configuring Board configured LED5 Data LED6 Link Q-Down-A-AFD User Manual R1.2 23/04/09...
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Page 8: Rear Modules And Signal I/O
RM45 rear module connector Description RM45 24 Q-Down-A-AFD modules per Indigo 4 frame 12 per Indigo 2 frame Six per Indigo 1 frame 2 per Indigo DT All frame slots can be used Q-Down-A-AFD User Manual R1.2 23/04/09... -
Page 9: General Purpose Interface (Gpi)
Each General Purpose Input (GPI) is fitted with a 6800Ω resistor connected to the internal +5V. The 16 user preset configurations can be recalled using binary notation. Bit 8 Bit 4 Bit 2 Bit 1 Bit 8 Bit 4 Bit 2 Bit 1 Preset Preset Q-Down-A-AFD User Manual R1.2 23/04/09... - Page 10 6 in each case and +5V @500mA is pin 15 on Remote 2 and Remote 6. Note: The +5V output is protected by self-resetting thermal fuses, which limit the total output current available from Remotes 1-4 to approximately 1A. Remotes 5-8 are similarly protected. Q-Down-A-AFD User Manual R1.2 23/04/09...
- Page 11 Remote 2: 26-way high-density D-Type male plugs and frame ground is pin 6 and +5V @500mA is pin 15. Note: The +5V output is protected by self-resetting thermal fuses, which limit the total output current available from Remotes 1-2 to approximately 1A. Q-Down-A-AFD User Manual R1.2 23/04/09...
- Page 12 Remote 2: 26-way high-density D-Type male plugs and frame ground is pin 6 and +5V @500mA is pin 15. Note: The +5V output is protected by self-resetting thermal fuses, which limit the total output current available from Remotes 1-2 to approximately 1A. Q-Down-A-AFD User Manual R1.2 23/04/09...
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Page 13: Card Edge Operation
Rotate SCROLL to identify a menu category. In combination with the ENTER button SCROLL select and ADJUST to change the current level or select a further option. /ADJUST The rotary control can access menus and parameter values by clockwise or anti-clockwise Notes: rotation. Q-Down-A-AFD User Manual R1.2 23/04/09... -
Page 14: Reading Card Edge Leds
Push ENTER to action the change. The display will cease flashing Use the up-arrow [] and SCROLL control to navigate to further menus The displayed menu brightness will flash slowly if confirmation of a change is required. Note: Q-Down-A-AFD User Manual R1.2 23/04/09... -
Page 15: Card Edge Configuration
Card edge operation 3.6 Card edge configuration Menu tree Q-Down-A-AFD Board edge menu structure To reach the top menu push the button repeatedly until a top menu is reached. Rotate the Tip: SCROLL control anti-clockwise until the STATUS menu appears. -
Page 16: Status Menu
PCB connector. Alarm priority is numbered 1-12 with input missing being the highest and channel silence Note: Group 4 being the lowest. A low priority alarm will be masked by a higher priority alarm. Q-Down-A-AFD User Manual R1.2 23/04/09... -
Page 17: Video Menu
Q-Down-A-AFD uses sophisticated two dimensional filtering to achieve a reliable artefact-free conversion. Four selectable levels of filtering from sharpest through sharp and soft to softest allow Q-Down-A-AFD’s performance to be optimised for the material being down converted. Output Aspect Ratio... - Page 18 AFD data. Output reclocker An integral part of Q-Down-A-AFD’s down converter is an output reclocker. This reclocker has the benefit of making output jitter independent of the input jitter but at the expense of through-board delay, approximately 3.8S from input to output. In certain circumstances this small delay could be unacceptable so there is a provision to bypass the reclocker block and reduce the through-board delay to its minimum of 1S.
- Page 19 For a Standard Definition input the minimum processing delay will be as little as 1s with the reclocker bypassed, fixed and frame will remain 52 SD line and one frame respectively. Selecting frame delay fixes the input to output delay to one frame (SD) and disables the Note: variable control. Q-Down-A-AFD User Manual R1.2 23/04/09...
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Page 20: Alarms Menu
Press ENTER to select. (0-20 seconds) Audio channel Rotate the Scroll/Adj. control to set delay interval in seconds. silence delay Press ENTER to select. (0-120 seconds) interval GPO5 and GPO6 menus are identical. Note: Q-Down-A-AFD User Manual R1.2 23/04/09... -
Page 21: Preset Menu And Factory Reset
Bypass without reclocking Delay unchecked GPO alarms Alarm delay video black Alarm delay video frozen 10 seconds Alarm delay audio silence Set to Preset 1 and all contents erased Presets Not enabled GPI Enable Q-Down-A-AFD User Manual R1.2 23/04/09... -
Page 22: Using The Front Control Panel
This operational guide assumes that the panel has been set up according to the panel setup procedure described in the Crystal Vision Control Panel manual. It is ESSENTIAL that the panel set up procedure is followed and any old or unknown Note: passwords cleared prior to using the panel for the first time. -
Page 23: Updating The Display
Using the front control panel Rotary control – shaft encoder used to select options or variable data Please refer to the Crystal Vision Control Panel manual for details of the Panel Setup, Lock Panel and Note: Diagnostic menus. Selecting a Q-Down-A-AFD To select a particular card in a frame, press the DEVICE key to go to the Device menu. -
Page 24: The Q-Down-A-Afd Active Panel Menu Structure
From the Home menu further selections can be made. Active function keys are indicated by illuminated, integrated LEDs. The main top-level menus for the Q-Down-A-AFD are obtained by pressing the F1- F4 keys from the Home menu. Menu keys are illuminated when active and when further menus are available. -
Page 25: Active Control Panel Menus
No changes can be made from this menu as it is read only. Not all status information will be updated in real time. If necessary press the * button Note: to cause the display to update. Q-Down-A-AFD User Manual R1.2 23/04/09... - Page 26 Electronically stored board serial number. Alarm priority is numbered 1-12 with input missing being the highest and group 4 channel Note: silent being the lowest. A low priority alarm will be masked by a higher priority alarm. Q-Down-A-AFD User Manual R1.2 23/04/09...
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Page 27: The Video Menu
Press F2 from the Home menu and rotate the shaft control to view the Video delay video delay. Press F2 and rotate the shaft control to adjust. 1-625 lines (output), Not Applicable (SD with reclocker bypassed). Q-Down-A-AFD User Manual R1.2 23/04/09... - Page 28 Q-Down-A-AFD uses sophisticated two dimensional filtering to achieve a reliable artefact-free conversion. Four selectable levels of filtering from sharpest through sharp and soft to softest allow Q-Down-A-AFD’s performance to be optimised for the material being down converted. Output Aspect Ratio...
- Page 29 AFD data. Output reclocker An integral part of Q-Down-A-AFD’s down converter is an output reclocker. This reclocker has the benefit of making output jitter independent of the input jitter but at the expense of through-board delay, approximately 3.8S from input to output. In certain circumstances this small delay could be unacceptable so there is a provision to bypass the reclocker block and reduce the through-board delay to its minimum of 1S.
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Page 30: The Alarm Menu
The seven subsequent conditions descend in order of priority with audio channel 7-8 silence given the lowest. All but input present can be assigned a delay time to delay the time after which an alarm is asserted. Q-Down-A-AFD User Manual R1.2 23/04/09... - Page 31 Press F2 to select and rotate the shaft control to set the delay time. delay setting 0-120sec. Pressing CAL whilst setting a delay interval will return the time to 0 sec. Note: GPO5 and GPO6 menus are identical. Note: Q-Down-A-AFD User Manual R1.2 23/04/09...
- Page 32 Crystal Vision Using the front control panel Q-Down-A-AFD User Manual R1.2 23/04/09...
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Page 33: Preset Menu And Factory Reset
Bypass without reclocking Delay unchecked GPO alarms Alarm delay video black Alarm delay video frozen 10 seconds Alarm delay audio silence Set to Preset 1 and all contents erased Presets Not enabled GPI Enable Q-Down-A-AFD User Manual R1.2 23/04/09... -
Page 34: Statesman
Statesman 4.3 Statesman operation The Crystal Vision Statesman PC control software is designed to control a range of Crystal Vision modules via serial control from a PC. Statesman provides a user friendly means of configuring and operating Crystal Vision modules with the benefit of “see-at-a- glance”... -
Page 35: Status
The analogue output format is selected by checking the appropriate radio button. See the installation chapter for rear module connection details. The final output configuration will depend on the settings of links PL6, 7 and 8. Note: Q-Down-A-AFD User Manual R1.2 23/04/09... - Page 36 Output reclocker An integral part of Q-Down-A-AFD’s down converter is an output reclocker. This reclocker has the benefit of making output jitter independent of the input jitter but at the expense of through-board delay, approximately 3.8S from input to output. In certain circumstances this small delay could be unacceptable so there is a provision to bypass the reclocker block and reduce the through-board delay to its minimum of 1S.
- Page 37 The minimum video delay will depend on the aspect ratio setting. Conversions that contain no vertical processing such as anamorphic or centre cut will have a minimum delay of 16 output lines whereas letter box sees a minimum delay of 52 Q-Down-A-AFD User Manual R1.2 23/04/09...
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Page 38: Presets And Alarms
There are two GPI outputs reserved for alarm indication – GPO5 and GPO6, which may have assigned to them any of the eight video and audio alarms. An alarm is enabled when its associated check box is ticked. Any number of alarms may be flagged. Q-Down-A-AFD User Manual R1.2 23/04/09... -
Page 39: Factory Reset
Press the cal button at anytime to reset the timer delays to the default values. Note: Factory reset Performing a factory reset is a quick and simple way of returning all settings to their default value. Q-Down-A-AFD User Manual R1.2 23/04/09... - Page 40 Bypass without reclocking Delay unchecked GPO alarms Alarm delay video black Alarm delay video frozen 10 seconds Alarm delay audio silence Set to Preset 1 and all contents erased Presets Not enabled GPI Enable Q-Down-A-AFD User Manual R1.2 23/04/09...
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Page 41: Trouble Shooting
Card edge monitoring The front edge of the card provides useful power rail monitoring, input status, vertical filter and analogue output format. Q-Down-A-AFD front edge view The following table summarises the card edge LED functions and colours: Name Function when ON... -
Page 42: Basic Fault Finding Guide
If necessary re-set the card Re-setting the card If required, the card may be reset by removing the card from the rack and then re-inserting it It is safe to re-insert the card whilst the rack is powered. Q-Down-A-AFD User Manual R1.2 23/04/09... -
Page 43: Specification
1V 2% with sync into 75ohm Composite: Auxiliary data Passed. Component performance Processing: Video input is 10 bit processed for 12 bit output DACs Frequency response: Luminance: +/- 0.3dB to 5.5 MHz. Chrominance: +/- 0.4dB to 2.5 MHz Q-Down-A-AFD User Manual R1.2 23/04/09... - Page 44 4 x GPI inputs. Recall of presets GPI outputs Number and type: 2 x GPI outputs, selectable from loss of input, video black and frozen, audio missing and audio channel silence. Input fail output Type: Blue Q-Down-A-AFD User Manual R1.2 23/04/09...
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