8-8 Imaging Subsystem
Image Analysis 5DX Series 3
The timing for a Frame Acquisition Cycle varies based on the number of
integrations. A single integration takes 80 milliseconds, while two integrations
take 160 milliseconds. The length of a Frame Acquisition Cycle can be represented
by the formula:
Frame Acquisition Cycle Time = (number of integrations)(80
milliseconds)
At the end of the Frame Acquisition Cycle, the Interface Card deactivates the
External Trigger Pulse and sends an interrupt to the System Controller indicating
that the Frame Acquisition Cycle is complete.
The image is ready for analysis, and the System Controller can continue with the
panel program.
Image Analysis
The image that was captured during the Image Acquisition Process needs to be
analyzed. The image is in memory and is analyzed based on the loaded panel
program. The threshold settings for each of the different algorithms are within the
panel program.
Image Analysis is done by a combination of the hardware and software that runs
tests of the Slice images of the solder joints. The hardware and software elements
of the Image Analysis Process include the following:
• Hardware — The Imaging Subsystem includes the System Controller. The
System Controller is a dual processor computer. The two processors share a
common memory area. The System Controller controls the operation of the
processors by determining which of the two processors will test the current
image data stored in memory. Since the processors operate independently, they
can each study different images at the same time.
• Software — The panel program is made up of a combination of various
algorithms. Within each algorithm there are many thresholds that can be set up
for various parts of a specific solder joint. These algorithms are used to analyze
the characteristics of the solder joints contained within the image data. Refer to
the Agilent 5DX User Guide for more information on panel programming,
thresholds and algorithms.
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