Burst Electronics BG-3 - Manual (Page 20)

ZOOM
The Zoom feature has two (2) selections, either On or Off. If On, the OSD image is stretched to
fit within the confines of the Relative Screen Position. If off, your OSD image is shown as
actual size with respect to the dimension your OSD image as it will appear when overlaid upon
the selected Test Pattern.
Paintbursh_Editor
This menu item gives you a link to Windows Paint (as long as it is installed on your computer).
This feature will load the currently selected OSD image into Windows Paint for editing.
OSD
This menu item pull down gives you the ability to select a luminance value for transparency of
your OSD image. By default 255 is used. Basically this means that if you have a pixel with a
value of Red = 255, Green = 255, and Blue = 255 (RGB=255), then that pixel is transparent.
This menu item also give you the ability to place a SMPTE bar pattern (with a Safe Title Area)
on the Relative Screen Position to help you determine the actual placement of your OSD
image. This is not a precise placement tool, just an picture to help give you an idea of where an
OSD image will be placed on your monitor.
Help
This menu item pull down gives you access to the electronic manual (BG3_BG7_Manual.PDF),
and About (product version). When you click on Manual, the software will attempt to spawn
Acrobat Reader and open this users manual. About will launch the program splash screen
telling you about the software version and copyright information.
Image Data
This pane, located on the right side of the software interface screen, gives information
regarding the image being shown under the Relative Screen Position. When an image is
loaded, the file name is displayed at the top.
Directly beneath are two boxes where you may manually input a starting position for your
image (“H” for horizontal and “V” for vertical). This starting position refers to the upper leftmost
pixel of your ID image.
The Image Size relays information regarding the dimensions of the currently selected OSD
image, as well as, the total pixel count (maximum of 65280).
The Start Position relays information regarding a pixel location of the upper left most pixel of
your OSD image. (Minimum 0 “H” and “0” V, Maximum 716 “H” and 484 “V”). You will note that
at the maximum Start Position you can place your image off screen. The hardware will not
allow an image to invade into the synchronization signals being generated from the BG-3/BG-
7, so the pixels of data that would invade this portion of the video are not written to the
hardware.
BG-3 and BG-7 Test Pattern Generator 20