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DUAL MONITORING ENCODER
INSTALLATION and OPERATION
© Vistek Electronics Ltd
Filename: V1629om.doc
Issue:
A
Date:
December 2000
VISTEK Electronics Ltd
Wessex Rd
Bourne End
Buckinghamshire, SL8 5DT
ENGLAND
Tel.
+44 1628 531221
Fax.
+44 1628 530980
Web:
www.vistek.tv
17 February, 2005
V1629
V1629OM.DOC/ A
Page 1 of 10
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Summary of Contents for VISTEK V1629
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Page 1: Installation And Operation
V1629 DUAL MONITORING ENCODER INSTALLATION and OPERATION © Vistek Electronics Ltd Filename: V1629om.doc Issue: Date: December 2000 VISTEK Electronics Ltd Wessex Rd Bourne End Buckinghamshire, SL8 5DT ENGLAND Tel. +44 1628 531221 Fax. +44 1628 530980 Web: www.vistek.tv 17 February, 2005 V1629OM.DOC/ A... - Page 2 V1629 DUAL MONITORING ENCODER INSTALLATION AND OPERATION 1. DESCRIPTION The V1629 is a two channel monitoring encoder which converts SDI signals to analogue colour composite ones. It is based heavily on the existing V1627, but has two completely independent channels. It is a 3U high Eurocard which can be fitted into either a V1601 or V1603 chassis from which it receives its power.
- Page 3 2. INSTALLATION 2.1 REAR PANEL CONNECTIONS The two available rear panels are shown below: 3U (V1603) SDI A I/P 1U (V1601) SDI A O/P CVBS A1 CVBS A2 DART CVBS B2 CVBS B1 SDI B O/P SDI B I/P SIGNAL SOURCE COMMENTS POWER...
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Page 4: Insertion Delay
2.2 INSERTION DELAY The SDI insertion delay is 10ns. The insertion delay from the SDI de-serialiser to the analogue outputs is 1.44µs. This is the same for the both the YC and CVBS outputs. 2.3 HARDWARE The figure below shows diagrammatically the main board along with certain components of interest. In particular it shows the positions of the 8 way DIL switches and the programmable micro-controller devices for each channel. -
Page 5: Switch Settings
YC on Output For normal operation all switches should be OFF, i.e. set towards the rear. 3. OPERATION 3.1 FRONT PANEL LAYOUT The V1629 front panel layout is as shown here. Remote Control Access and Power indicators PAL I PAL N... -
Page 6: Front Panel Indications
3.2 FRONT PANEL INDICATIONS 3.2.1 REM The REM LED indicates that the PCB is being accessed by the Rack Controller. It is NOT an indication that the unit is in REMOTE control mode. As the Rack Controller accesses the module the LED will emit short blips. -
Page 7: Standard Setting
3.3 LOCAL CODER CONTROL Local control of the coder functions is all done on the DIL switches on the PCB except for PLUGE on and off. Most of the coder functions are inherent to the design, but some characteristics can be changed using the DIL switches on the PCB. - Page 8 3.5 VI BLANKING Normally the V1629 passes any signal in the active video parts of the vertical interval lines through to the coding process. This is useful if they carry Component test signals, or monochrome TELETEXT signals for example. For some application the user may want to blank these vertical interval lines. This can be done locally using switch 2 on the DIL switch banks or remotely over DART.
- Page 9 3.8 ADJUSTMENTS Both the V1627 and V1628 have internal adjustable potentiometers for setting up gains and black levels. They are shown in this table: POT. BUILD OUTPUT PARAMETER VR 1 Both A on CVBS CVBS Gain VR 2 Both A on CVBS CVBS Black VR 3 Both...
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Page 10: Troubleshooting
3.11 TROUBLE SHOOTING The V1629 is a reliable and easy to use unit but there could be some circumstances where the output is not what is expected. This short guide may help to solve problems quickly. SYMPTOM POSSIBLE CAUSE(S) No O/P from either channel...
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