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Crystal Vision DEC104S User Manual

Composite or y/c to sdi decoder
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DEC104S
Composite or Y/C to SDI decoder
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 1 DEC104S Composite or Y/C to SDI decoder 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...

  • Page 2: Table Of Contents

    Crystal Vision DEC104S User Manual R1.0 Contents 1 Introduction Operating modes Output timing Audio follow pulse General Purpose Interface (GPI) 2 Statesman 2.1 Installing Statesman 2.2 Statesman operation Configuration Gain, black level and phase adjustment Timing adjustment 3 Using the front control panel...
  • Page 3 Crystal Vision DEC104S User Manual R1.0 5 Hardware installation 5.1 Rear modules and signal I/O RM01 RM23 RM24 RM25 RM27 5.2 Module configuration Loop or terminate the composite input Loop or terminate the external reference 6 Trouble shooting Card edge monitoring...

  • Page 4: Introduction

    Crystal Vision Introduction 1 Introduction The DEC104S is an analogue composite or Y/C to serial digital video decoder. It contains a 10 bit synchroniser allowing the serial digital output to be timed to an analogue reference. Two main operating modes are supported, 10 bit for professional quality PAL or NTSC video and 8 bit for less stable PAL or NTSC video, as is often the case with VHS or satellite feeds.

  • Page 5: Operating Modes

    10 bit mode whichever source is the active reference. Audio follow pulse To allow an audio delay to track the video delay through the DEC104S, a TTL level pulse is provided. This audio follow pulse is available from GPI5 and the RM27 rear module.

  • Page 6: General Purpose Interface (Gpi)

    Crystal Vision Introduction General Purpose Interface (GPI) The DEC104S, as with most Crystal Vision modules, is equipped with GPI control I/O. Low (<1V) High (+5V) ‘a’ No connect Lose of 8 bit lock 8 bit locked ‘b’ 8 bit lock ‘c’...
  • Page 7 Remote 1: 26 way high density D-Type socket. Frame ground is pin 2 and +5V @500mA is pin 1. Remote 2: 26 way high density D-Type plug. Frame ground is pin 6 and +5V @500mA is pin 15. DEC104S User Manual R1.0 29/10/04...
  • Page 8 Remote 1: 26 way high density D-Type socket. Frame ground is pin 2 and +5V @500mA is pin 1. Remote 2: 26 way high density D-Type plug. Frame ground is pin 6 and +5V @500mA is pin 15. DEC104S User Manual R1.0 29/10/04...

  • Page 9: Statesman

    Running Statesman for the first time The Statesman PC Control System may be run from the Crystal Vision programs folder via the Start menu or by double-clicking on the Crystal Vision.exe file in the installed program directory. When the program runs it will require licence information and an administrator name and password.

  • Page 10: Statesman Operation

    Note: For further details of Statesman configuration and operation please refer to the Statesman manual. DEC104S User Manual R1.0 29/10/04...

  • Page 11: Configuration

    Select Y/C (S-Video) or composite input format YC /Composite Note: When the input is NTSC the Y/C mode automatically sets the module into 8 bit mode. Use the DEC102 for 10 bit mode with NTSC inputs in Y/C format. DEC104S User Manual R1.0 29/10/04...
  • Page 12 Green when input detected. Grey when no input detected. Reference present Yellow when analogue reference detected. Grey when no input detected. Note: Refer to the installation section for details of the external analogue reference input loop or terminate link on the module itself. DEC104S User Manual R1.0 29/10/04...

  • Page 13: Gain, Black Level And Phase Adjustment

    The Phase/Hue control adjusts chroma phase relative to burst. The range of adjustment is 360 degrees, in steps of roughly 0.1degrees. When the maximum adjustment is reached the value wraps around to zero. Recalling defaults To recall default settings press the Cal button. DEC104S User Manual R1.0 29/10/04...

  • Page 14: Timing Adjustment

    The following tables summarises the possible output timing reference sources: Active timing reference Ext Ref Mode External analogue input Present 10 or 8 bit Composite or Y/C input Not present 10 bit Free running internal clock Not present 8 bit DEC104S User Manual R1.0 29/10/04...
  • Page 15 37ns. This adjustment is available in 10 bit mode only. The available range is -128 to +127 steps (roughly +/- 4.5 microseconds) relative to the factory default position. The value cannot be adjusted outside this range. Recalling defaults To recall default settings press the Default button. DEC104S User Manual R1.0 29/10/04...

  • Page 16: Using The Front Control Panel

    At power up, the two line 20-character screen will display ‘Crystal Vision’ followed by the firmware version number for the control panel. All eight control panel key LEDs will illuminate.
  • Page 17 F1, then F2. Menu 1.2.3 is reached by pressing F2 and then F3. Note: Please refer to the Crystal Vision Control Panel manual for details of the Panel Setup, Lock Panel and Diagnostic menus. Selecting the DEC104S To select a particular card in a frame, press the DEVICE key to go to the Device menu.

  • Page 18: The Dec104S Menu Structure

    Crystal Vision Using the front panel If remote control has been enabled, the control panel will then enter card mode and communicate with the DEC104S at the node number last displayed in the available cards list. The DEC104S home menu...

  • Page 19: Selecting Video Standard And Decoder Modes

    If VBI (Vertical Blanking Interval) data is set to ON, the data is passed as undecoded luminance. In PAL this affects lines 7 to 22 and 319 to 335, in NTSC it affects lines 10 to 20 and 273 to 282. DEC104S User Manual R1.0 29/10/04...

  • Page 20: Setting Gain And Black Level

    8 bit mode, the 10 bit adjustments are maintained and will be restored when 10 bit operation is resumed. There are effectively five sets of independent gain and offset adjustments; 8 bit composite, 10 bit comb, 10 bit bandsplit, 8 bit Y/C and 10 bit Y/C. DEC104S User Manual R1.0 29/10/04...
  • Page 21 –30 to +385mV. Press the CAL button at any time while in this menu to set gain and offset to their default values (100% and 0mV). DEC104S User Manual R1.0 29/10/04...

  • Page 22: Adjusting Signal Timing

    However, the horizontal delay is common to both 525 and 625. Settings are automatically maintained when the unit is powered off and restored when the unit is powered back on. Note: The horizontal delay (HDEL) and phase control (PHSE) are not available in 8 bit mode. DEC104S User Manual R1.0 29/10/04...
  • Page 23 10 bit mode only. The shaft encoder LED will illuminate and an asterisk will appear on the display next to 'PHSE'. The range of adjustment is 360 degrees, in steps of roughly 0.1degrees. When the maximum adjustment is reached the value wraps around to zero. DEC104S User Manual R1.0 29/10/04...
  • Page 24 'HDEL’. The available range is -128 to +127 steps (roughly +/- 4.5 microseconds) relative to the factory default position. The value cannot be adjusted outside this range. Recalling defaults There is no CAL function for the timing adjustments. See also ‘Restoring factory defaults' in the Card-edge operation section. DEC104S User Manual R1.0 29/10/04...

  • Page 25: Card Edge Operation

    Card edge operation 4 Card edge operation The control of the DEC104S will always follow the last control surface used. For example, if a card edge lever is moved the unit will switch to and remain in the Local Control Mode. If Statesman or any control panel menu is used, then the unit will switch to and remain in the Remote Control Mode.

  • Page 26: Setting Video Standard And Decoder Options

    There are five decoder modes, selected by a combination of the four-lever switch, Adjust control and on-board jumpers: Comb – 10 bit adaptive comb decoder mode Bandsplit – 10 bit HIGH QUALITY bandsplit mode for PAL inputs only Simple – 8 bit decoder mode DEC104S User Manual R1.0 29/10/04...

  • Page 27: Setting Gain And Black Level

    8 bit mode, the 10 bit adjustments are maintained and will be restored when 10 bit operation is resumed. There are effectively five sets of independent gain and offset adjustments; 8 bit composite, 10 bit comb, 10 bit bandsplit, 8 bit Y/C and 10 bit Y/C. DEC104S User Manual R1.0 29/10/04...

  • Page 28: Adjusting Signal Timing

    PAL and NTSC. This gives a total of four separate phase adjustments, two each in PAL and NTSC. All these parameters are automatically maintained when the unit is powered off and restored when the unit is powered back on. DEC104S User Manual R1.0 29/10/04...
  • Page 29 The horizontal delay adjustment varies the timing of the input video relative to input syncs and blanking in 10 bit mode whichever source is the active reference. Mode Input video timing 10 bit Relative to input video syncs and blanking 8 bit No horizontal delay available DEC104S User Manual R1.0 29/10/04...
  • Page 30 SEL switch in position 9 as it also used as a power-up factory reset function. The available range is -128 to +127 steps (roughly +- 4.5 microseconds) relative to the factory default position. The value cannot be adjusted outside this range. DEC104S User Manual R1.0 29/10/04...

  • Page 31: Setting 525 (Ntsc) Setup

    'DEFAULTS?' To restore default settings set piano switch lever 4 DOWN. Note: Moving the rotary switch away from position 9 will set the board to normal operation without overwriting the previous settings. On no account should the SEL switch be left in position 9. DEC104S User Manual R1.0 29/10/04...

  • Page 32: Hardware Installation

    5 Hardware installation The DEC104S single height module uses the RM01, RM23, RM24, RM25 amd RM27 rear connectors and fits into all Crystal Vision rack frames. All modules can be plugged in and removed while the frame is powered without damage.

  • Page 33: Rm23

    Serial Digital Output NTSC/PAL IN LOOP Analogue Composite Video input Loop-Through Analogue Composite Video NTSC/PAL IN SYNC IN LOOP Composite Sync (B & B) Input Loop-Through Note: An audio follow pulse is available on GPI5. DEC104S User Manual R1.0 29/10/04...

  • Page 34: Rm25

    Crystal Vision Hardware installation RM25 RM25 modular rear connector Description • RM25 (ZLA00249 artwork) • 18 DEC104S modules per Indigo 4 frame SYNC IN SDI OUT Y IN PAL/NTSC/C IN LOOP PAL/NTSC/C IN SDI OUT • 9 DEC104S modules per...

  • Page 35: Rm27

    An audio follow pulse is available on GPI5. 5.2 Module configuration The DEC104S has jumper links and analogue gain adjustments present on the module PCB. Many of the jumper links are set in conjunction with the front card edge controls.

  • Page 36: Loop Or Terminate The External Reference

    Link Position Select loop through or termination of reference syncs Bottom right hand corner Link towards edge connector – ext syncs looped through Link away from the edge connector – ext syncs terminated on board DEC104S User Manual R1.0 29/10/04...

  • Page 37: Trouble Shooting

    6 Trouble shooting Card edge monitoring Once the start-up initialisation procedure is complete, the DEC104S can be controlled or configured from the card edge, from an active control panel or the Statesman PC interface. This chapter will concentrate on the card edge monitoring LEDs.
  • Page 38 It is usually safe to reinsert the card whilst the rack is powered. It is also possible to recall factory defaults by following the procedure at the end of the Card-edge operation chapter. DEC104S User Manual R1.0 29/10/04...

  • Page 39: Specification

    Video SDI output 4 x 270Mb/s serial digital to EBU Tech 3267-E and SMPTE-259M Analogue performance Frequency response with +/- 0.3dB to 5.5mHz comb active Gain error <1% Differential phase and gain <1.5°, <1.5% (10 bit mode) DEC104S User Manual R1.0 29/10/04...
  • Page 40 Statesman enabled only 2U frame for up to 12 modules Indigo 1S Statesman enabled only 1U frame for up to 6 modules Indigo DTS Statesman enabled only 1U Desk top box for up to 2 modules DEC104S User Manual R1.0 29/10/04...

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