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to use virtual memory as Frame Buffer space. A little virtual memory assigned to the frame
buffer is not too bad. A lot can make you wonder what kind of alien being has just taken
over your hard drive.
Also, Windows will allocate real memory first, and when it’s gone, begin allocating virtual
memory. For this reason it is a good idea to run the LBA-PC application with no other
application(s) operating in the background. This will free up as much real memory as
possible for Frame Buffer use.
3.2.3.5 Am I using Virtual Memory yet?
How do I know when my Frame Buffer is running over from real into virtual memory? Easy...,
your hard disk drive light will begin to flicker when the real frame buffer capacity is filled, and the
virtual file swapping begins. To avoid this, try reducing the Frame Buffer size until it stops.
Note: Be sure to perform this test with Logging disabled.
3.2.3.6 Sync Source
Many applications will use standard analog output cameras. For analog cameras the Sync
Source must be set to Genlock. The LBA-400/500/7XXPC models can be purchased with an
option that will allow support for both Analog and Digital cameras. Note: the model LBA-300PC
cannot support digital cameras.
Figure 15
If you have purchased the digital camera option with either an LBA-400/500/7XXPC, and are
connecting a digital camera, set the Sync Source to Digital.
In Digital mode, the Pixel Bits entry must be set to the number of data bits that are being
input to the LBA. If you purchased an LBA-400PC-D, you can choose 8, 9, or 10 bits per pixel. If
you purchased an LBA-500PC-D, you can choose either 8, 9, 10, 11 or 12 bits per pixel. If you
purchased an LBA-7XXPC-D, you can choose either 8,10,12,14 or 15 bits per pixel.
If your camera’s digital output is in a signed twos compliment data format, select a minus Pixel
Bits value. For example, the Pyrocam I outputs 12 bit signed 2’s compliment digital data. Thus,
the Pixel Bits setting is –12.
If your digital camera has more bits of resolution than can be accommodated by the LBA-PC, you
must connect only the upper most significant bits. Any left over data bits will not be processed
by the LBA-PC.
Note: There may be some jumper traces on the frame grabber card that will need to be cut if you are using a digital
camera that is outputting fewer bits than the default configuration. The default is 10 bits for the LBA-400PC-D and
12 bits for the LBA-500PC-D. The LBA-7XXPC-D models use the software to set the number of bits rather than
jumpers.
Operator’s Manual LBA-PC
Doc. No. 10654-001, Rev 4.10
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