13. Input Source Fi le Service
OptionItem Explanation
ClampDelay Thetime between the leading edge of the clamp pulse and the locked edge of the synchro pulse. Can
beany value between 0 and 255. Changethe value by pushing the curser key ↑or ↓. (image13-2)
Clamp Width Thewidth of the clamp pulse can be any value between 0 and 255. Change thevalue by pushing
the curser key ↑or ↓. image 13-2)
FieldPolarity The field polarity function is used for interlaced images. Both rasters of the image could be shifted in
awrong way (double lines arevisible in the image). Thiscan be corrected by forcing the field polarity
toNeg. orPos. Usethe ENTER key to toggle between Pos. and Neg.
FieldSelec t Default setting = [Both]
Thefield select is only used for interlaced images. One frame of an interlaced image contains two
fields,an even and an odd field. Thechoice exists to project [both] fields on the screen or only the
[even]or [odd] field. This can be useful for 3D projection. Use the ENTER key to toggle between
Both, Even and Odd.
VerticalRefresh Thew ayof updating the image information on the display panels. This item is not available for
Pal-NTSC-Secam sources, and for that reason displayedin gra y.
–For sourceswith a vertical frequency up to 60 H z: the vertical refresh rate is the same as the
verticalfrequency of the source. This is a necessity to project moving images without ’motion
artifacts’. For stationary images with a vertical frequency up to 60 Hz, it is still possible to use
asynchronousrefresh. When loading Pal, Secam or NTSC-files, the synchronousm ode isdefault,
forall other sources below 60 Hz,asynchronous mode isdefault.
-For sources with a vertical frequency higher than 60 Hz: thevertical refresh is different than the
verticalfrequency of the source. Synchronous refresh cannot be used.
Vertical Synchro
Polarity
Thevertical refresh can be sync hronized with theleading or trailing sync edge. Default setting is
[Leading]. Toggling to [Trailing]is only necessary for special applications where the trailing edge
of thesynch rosignal has to be taken as a reference. Use the ENTER key to toggle between
Leading and Trailing.
Film mode detection:
[On] or [Off]
Detectsin the [on] mode if the source is film or video. Use the EN TER key to togglebetween [on]
or [off]
When enabled, the hardware looksfor telltale signs of 3:2 or 2:2 pull-down sequences. These
arethe result of converting cinema material recorded at 24 frames-per-second to the television
frequenciesof 60 or 50 interlaced fields per second respectively. When FILM conversion is detected,
theoriginal 24 frames-per-second are restored. Thisavoids de-interlacing artefacts, and results in a
perfectartefact-free display. Note that in some cases (video clips, scrolling news stickers,...) FILM
andVIDEO materialare mixed on one screen. This may confuse the detector and cause it to go
intoFILM restoration mode. This will cause "jaggies" orm otionartefacts. In such cases, disabling
FILM mode processing is the best cure.
Banner Protect: [On]
or[O ff]
Onlyactive when film mode detection is in the on position. U sethe EN TER keyto toggle between
[on] or [off].
FILMm ode processing normally processes theen tiredisplay, but this may cause problems on
sourceswhere video and FILM content are mixed. Onevery common exam ple isscrolling banners at
thebottom of the screen (e.g. financialnews). Forthose cases, the "banner protect" feature will force
thebottom quarter of the screen to be always process ed inV IDEO mode, regardless of the rest of
thescreen, whichmay beeither video or FILM m ode.
54 R5976519 ACSAR 12122002