7. Random Access Adjustment Mode
How to install the correct settingsfor the options in the Edit file menu.
EDIT FILE OPTIONS
Source number 1
Clamp position [leading]
Clamp delay 0
Clamp width 10
Field polarity [pos]
Field select [both]
Vertical refresh [sync]
Film Mode Detection [on]
Banner Protect [on]
Select with ↑or ↓
<ENTER> to toggle
↑or ↓to change value
<EXIT> to return
Menu7-12
Sourcenumber The source number of a non-active file can be changed to any other source number. Thismakes it
possibleto create a file for future source numbers.
Clampposition Clamping determines the black level of the signal. The clamp pulse can be related to the leading or
thetrailing edge of the sync pulse. Use the ENTER key to toggle between [leading] and [trailing].
Clampdelay Thetime between the leading edge of the clamp pulse and the locked edge of the syn c pulse. Can be
anyvalue between 0 and 255. Change the value by pushing the cursor key ↑or ↓.
Clampwidth The width of the clamp pulse can be any value between 0 and 255. Change the value by pushing
the cursor key ↑or ↓.
Sync
pulse
Clamp
pulse
Clamp
delay
Clamp
width
Leading edge
Trailinging edge
Image7-2
Examplefor Clamp position [trailing]
Fieldpolarity Thefield polarity function is used for interlaced images. Bothrasters of the image couldbe shifted in a
wrongway (double lines are visible in the i mage). This can be corrected by forcing the field polarity to
[neg]or [pos]. Use the ENTER key to toggle between [pos] and [neg].
Fieldselect Default [both]
Thefield select is only used for interlaced images. One frame of an interlaced image contains two
fields,an even and an odd field. The choice 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].
Vertical refresh
[sync/async] Theway of updating the image information. Not available forPAL-NTSC-SECAM sources. This
option will be displayed in gray.
• Forsources with a vertical frequency up to 60 Hz : the vertical refresh rate is the same as the
verticalfrequency of the incoming source. This is a necessity to project moving images without
’motionartifacts’. For stationary images with a vertical frequency up to 60 Hz it is still possible
touse asynchronous refresh. When loading Pal, Secam, NTSC-files the synchronous mode is
default,for all other sources below 60 Hz asynchronous mode is default.
• Forsources with a vertical frequency higher that 60 Hz : thevertical refresh is different than the
verticalfrequency of the incoming source. Synchronous refresh cannot be used.
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