5.1.14 CAMERA SYSTEM DIAGNOSTICS (E)
When you press this option, a display similar to the one shown in figure 5-29 appears. The “n”
shows the number of cameras set in Global parameters.
USING n CAMERAS
CAMERA SIZE (PIXELS) [1510] :
Figure 5-29 Camera System Statistics
Enter the camera size or just press <CR> and the menu in figure 5-30 appears.
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E : EXPOSURE MEMORY NE : NORMALIZE EXPOSURES
G : GAIN MEMORY NG : NORMALIZE GAIN
D : DISPLAY CALIBRATION MEMORY F : FILL CALIBRATION MEMORY
T : TAKE LINE Q : TAKE QUALIFIED LINE
A : AUTOTAKE V : VIDEO BOARD RESET
L0 : LIGHTS OFF L1 : LIGHTS ON
U : UNIFORMITY CHECK K : CALIBRATION CHECK
M : MIRROR CONTROL P : TEST PATTERN CONTROL
Y : CAMERA DELAY C : CALIBRATION MEMORY TEST
R : CAMERA RESPONSE CURVES H : HISTOGRAM
X : EXIT
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Ready
Figure 5-30 Camera System Diagnostics Menu
5.1.14.1 E: Exposure Memory
Exposure in the CF scanner is similar to shutter speed in a conventional camera. The higher
the number (the slower shutter speed), the longer the camera is collecting data. This memory
stores data telling the camera when to start collecting data. For Example, if you enter “2000”
in hexadecimal, the camera starts collecting light reflected from the document and 2000 pixel
times later, data is output from the camera.
If you enter <D> and <CR> for “Display”, the content of the Exposure Memory will be
displayed, starting from address 0000. This memory contains 64k 8-bit words. They are
displayed 320 at a time. To view the next 320, press <D> and <CR> again. To view the
memory starting at an address other than 0000, enter D command, followed immediately by the
address. You do not need a <CR>. For example, “D2000”.
If you choose <F> for “Fill”, you can fill the memory with a single hexadecimal number you
specify. This value will fill the memory, writing over anything already there. If you want to
