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5.1.14.17 Y : Camera Delay (Factory Use ONLY)
Writes a specified value to the Camera Delay Register on the video motherboard. This
command is reserved for factory use.
5.1.14.18 C : Calibration Memory Test
Does a write, read, and compare on the calibration memory using four test patterns. If no errors
are detected, “OK” is reported for each pattern. If errors occur, the addresses of the bad
memory locations are reported.
5.1.14.19 R : Camera Response Curves
Plots a view of pixel response ( Y axis ) versus position within a camera ( X axis.) This is
valid only after running a Take Line command ( <T> ) or a Take Qualified Line command (
<Q> ). The plots are scaled automatically depending on the pixel response range.
When you press <R> , the prompt “Camera : “ appears. Enter a valid camera number ( no
<CR> is required ). To exit , press <CR> without entering a number.
5.1.14.20 H : Histogram
Displays a histogram of the pixels values written to the calibration memory by a Take Line (
<T> ) command or a Take Qualified Line ( <Q> ) command. The histogram is not calculated
on a per camera basis. It always depicts an entire scan line. The X axis represents the range of
pixel values from 00-FF hex. This range of 256 values is reduced to 64 to allow display on an
ASCII terminal. Pixel values 0-3 are grouped together , 4-7 are grouped together, etc. The Y
axis represents the number of occurances falling within each range of pixel value. The
histogram is scaled automatically so that the range containing the most occurances is shown as
a column filling the entire display area. Since this often obscures detail in the sparser ranges,
facilities have been added to zoom up the display to overcome this problem. When the display
is zoomed up, columns which would exceed the size of the display area are clipped to stay at
the maximum height. A selector function ( represented by the letter S in reverse video ) is used
to display the actual number of occurances within the selected column. When the selector is at
the base of a column, the number of occurances within that column is shown at the top of the
display screen. This number is independent of zoom factor.