Source Set Up
How finding the correct values for the displayed item?
During the installation of a file with LOAD, the horizontal period, the total number of vertical lines and the interlaced mode are automati- cally measured and filled in in the menu table. These values will be available when starting up the EDIT procedure of an active file.
Select first "Horizontal" and press ENTER to display a full image.
If the value for "Horizontal total pixels" is wrong, sampling mistakes (small vertical bars in the projected image) will be seen in the image. Select "Total" and adjust the pixel quantity. Adjust for zero bars (hint : if the number of bars increase, adjust in the other way).
The active pixels : determine the width of the window on the screen. This value is normally given in the source specifications. If not, adjust until full image is displayed (no missing pixels).
Horizontal shift : to shift the image on the screen.
Horizontal period : already filled in with the correct value when active file.
Press EXIT to return to the normal Edit file menu.
Select "Vertical" by pushing the control disk up or down and press ENTER. The full image is displayed.
The "Vertical Total lines" are already filled when an active file is selected to be edited.
The "Active lines" : number of horizontal lines determining the height of the projected image. This value is normally given in the specifica- tion of the source. If not, adjust until full image height is displayed (no missing lines)
Vertical shift : shift the image up and down (push joy stick forward or backward) on the screen until the correct image position is obtained.
Interlaced [On] or [Off] : this selection is automatically filled when active file has to be edited. If the image is wrong due to mismeasurement, use the ENTER key to toggle between [On] and [Off]. (for interlaced images, 1 frame contains 2 fields).
Read AMDS
AMDS = automatic mode detection & synchronisation
During the installation of a file with LOAD, the system measured automatically the horizontal period, the total vertical lines and the interlaced mode.
When selecting Read AMDS, the system remeasures the above indicated items.
Options
Source number : The source number of a
Clamping : the clamping determines the black level of the signal. default setting : arrow up 1
Arrow up : trailing edge of the sync pulse to start the clamp pulse.
Arrow down : leading edge of the sync pulse to start the clamp pulse
1 : narrow clamp pulse
2 : wide clamp pulse
Field polarity inverted : default [No]
This function is used for interlaced images. Both rasters of the image could be shifted in a wrong way (double lines are visible in the image). This can be corrected by inverting the field polarity to [yes].
5975348 BARCOVISION 8200 210497
EDIT FILE (Horizontal) |
Total : |
865 pixels |
Active : |
675 pixels |
Shift : |
116 pixels |
Period : |
63.7 µS |
862 |
EDIT FILE (Horizontal) |
Total : |
865 pixels |
Active : |
675 pixels |
Shift : |
116 pixels |
Period : |
63.7 µS |
863 |
EDIT FILE (Vertical field) |
Total : |
312 lines |
Active : |
278 lines |
Shift : |
+15 lines |
Interlaced : |
[On] |
864 |
EDIT FILE OPTIONS |
| |
Source number | 1 |
|
Clamping | [ 1] |
|
Field polarity inverted | [no] |
|
Vertical refresh | [sync] |
|
Vertical sync polarity | [ | ] |
|
| 858 |
