13. Input Source File Ser vice
Intheloadfilemode,theactivefileisindicatedbesidetheitemActiveFile.
When scrollingthrou ghthe files, the image will be adapted according the file specifications of that selected
file.
The image display is not perfect
Ifthe created file doesn’t results in a perfect image, go to the fileedit menu which allows to adap t some parameters (see further).
13.3 File identificationHow identifying the new selected source
When selectingthe respective input slot with the new source, the horizontal period, the total number of vertical lines and the inter-
lacedmode are automatically measured and filed in the menu table as a new custom file.
Whenediting a custom file, NEVER adjust the autom aticallymeasured valuesas they are used to identify the
inputs ource filewhe nselecting.
Explanation of the Edit file menu items
Menu Item Explanation
HorizontalTotal Pixels Ifthe value for ’Horizontal Total pixels’ is wrong, sampling mistakes, small vertical bars will be seen
inthe image (Total numbers of pixels between 2 sync pulses is used to adjust the sampling rate).
Select’Total’ and increase or decrease the pixel quantity for no bars in the image. (image 13-1)
Active pixels The’Active pixels’ determine the width of the window on the screen. This value is normally given in
thesource specifications. If not,adjust until full image is displayed (no missing pixels). (image 13-1)
Horizontalstart This is thenu mberof the pixels between the beginning of the input signal and the start of the
videoinform ationin the signal. (image 13-1)
HorizontalPeriod Thisis already filled in with the correct value at thetime of the sou rceidentifying.
VerticalTotal Lines Thisis already filled in with the correct value at thetime of the sou rceidentifying.
ActiveLines Thisis the number of horizontal lines determining the height of the projected image. This value is
normallygiven in the specification of the source. Ifnot, adjust until full image height is displayed (no
missing lines).
VerticalStart This is the number of the lines between the start of the input signal and the start of the image
on the screen.
Interlaced[On] or [Off] This selection is automatically filledat source identifying. If he image is wrong, due to wrong
measurements, use the ENTER key to toggle between On and Off. (For interlaced images, 1
frame contains 2 fields).
Read AMDS AMDS = Automatic Mode Detection & Synchronization
SelectingAMD San dconfirmed with ENTER, the system re-identify the input source.
Explanation of the Edit file menu option items
OptionItem Explanation
SourceNum ber The source number of a non-active source can be changed to any other source number. This makes
itpossible to create a file for future source numbers.
ClampPosition Clampingdetermines the back level of the signal. The clamp pulse can be related to the leading
orthe trailing edge of the synchro pulse. Use the ENTER key to toggle between Leading and
Trailing. (image 13-2)
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