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Video Analogue to Digital Converter
Key Channel Analogue to Digital
INSTALLATION and OPERATION
© Vistek Electronics Ltd
Filename: V1623om.doc
Issue :
2
Date:
June 2002
VISTEK Electronics Ltd
Wessex Rd
Bourne End
Buckinghamshire, SL8 5DT
ENGLAND
Tel.
+44 1628 531221
Fax.
+44 1628 530980
Web:
www.vistek.tv
01/03/2005
V1623
V1623K
Module
Converter Module
V1623_2OM.DOC
Page 1 of 15
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Summary of Contents for VISTEK V1623
- Page 1 V1623 V1623K Video Analogue to Digital Converter Module Key Channel Analogue to Digital Converter Module INSTALLATION and OPERATION © Vistek Electronics Ltd Filename: V1623om.doc Issue : Date: June 2002 VISTEK Electronics Ltd Wessex Rd Bourne End Buckinghamshire, SL8 5DT ENGLAND Tel.
- Page 2 01/03/2005 V1623_2OM.DOC Page 2 of 15...
- Page 3 Key signal and the Pb/B and Pr/R channels are fixed at black in the processing. The V1623 is a video analogue to digital converter, which forms part of the Vistek V1600 range of interface products. It is a 3U high card, which is fitted into either a V1601, V1603 or V1606 rack from which it gets its power and control.
- Page 4 01/03/2005 V1623_2OM.DOC Page 4 of 15...
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Page 5: Installation
2. INSTALLATION 2.1 REAR PANEL CONNECTIONS The V1623 rear module connections are shown below. 3U Rear Module (16VR3H) 1U Rear Module (16VR1H) Sync (loop) Pr/R DART Sync Pb/B Pb/B Pr/R Sync Sync * The V1623K Module has the Y/G input labeled as Key and the Pb/B and (loop) Pr/R inputs are not connected. - Page 6 2.4 HARDWARE The figure below shows diagrammatically the printed circuit board along with certain other components of interest. In particular it shows the position and orientation of the controls and switches, which set up the calibrated levels and External Reference level range. The EPROM location is shown, as it is the component that would need to be changed as a result of any software upgrade in the field.
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Page 7: Front Panel
Mode and Value LEDs (see below) DOWN Button REMOTE / LOCAL control selection Local V1623 Video The front panel shown above has three purposes: Provide the user with the operating conditions Offer Local control and indication of the primary controls Select the control source 2.5.1 Operating Conditions... - Page 8 2.5.2 Adjustments The central section is used in Local control to select which of the four available pages and which of upto 6 available menus is to be adjusted and to make the adjustment. In remote mode or Page 0, menu 0, the menu LEDs indicate by flashing if any of the gains are off their calibrated settings.
- Page 9 -ve gain Yellow 01/03/2005 V1623_2OM.DOC Page 9 of 15...
- Page 10 Page Menu Item Parameter / ‘-‘ led ‘ ‘ led ‘+’ led Value I/P Standard Green RGB + Set-up Yellow Green MII + Set-up Yellow Green Beta + Set-up Yellow Green Green Beta Green Green O/P Standard Last Used Default 525 Green Default 625 Green...
- Page 11 Page Menu Item Parameter / ‘-‘ led ‘ ‘ led ‘+’ led Value Green Limiting Set-up ear limit Yellow Operating Normal Mode Engineering Yellow Yellow Yellow Alignment Test Patterns Colour Bars Yellow Split Bars Yellow Yellow Black Yellow (* Eng. Mode Edge of picture Only) Split Edge...
- Page 12 Page Menu Item Parameter / ‘-‘ led ‘ ‘ led ‘+’ led Value O/P Standard Last Used Default 525 Green Default 625 Green Forced 525 Yellow Forced 625 Yellow Reference I/P External Green Ref Fail Free run Green Mode O/P Black Yellow O/P Mute Test Patterns...
- Page 13 Page Menu Item Parameter / ‘-‘ led ‘ ‘ led ‘+’ led Value Limiting Set-up ear limit Yellow Operating Normal Mode Engineering Yellow Yellow Yellow Alignment Test Patterns Staircase Yellow Split Staircase Yellow Yellow Black Yellow (* Eng. Mode Edge of picture Only) Split Edge Yellow...
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Page 14: Operation
2.6 INITIALISATION When the unit powers up it will be reset to the same conditions as when power was removed until it is changed. In the Remote control mode any changes will be made by the control system, but in Local they will be made on the front panel. -
Page 15: Test Pattern Generator
Black can also be put into Split screen mode, so half the picture is test pattern and the other half Input video. 3.8 EDH The V1623 contains an EDH generator. This means a correct EDH data packet is always created on the output, when it is switched on. 3.9 SETUP EAR REMOVAL When a 525 video input is used with set-up, it is not possible to accurately know where the pedestal starts and stops, due to the specification differences between analogue and digital horizontal blanking.
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