This is easy enough to fix: simply delay the signal by the time
required for the disk to make 1/2 a rotation. This is something
we can do with a Labview program.
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Step 3: |
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Disconnect
from
and connect it to
D/A channel 0 (pin 51 on the socket strip).
Connect
to A/D channel 4 (pin 46 on the socket strip).
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Step 4: |
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Load the "Video Processor" Labview program.
This provides both a delay and adjustments for
brightness and contrast of the image.
It also provides an automatic gain control (AGC)
to keep the image level constant between dark and light scenes.
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Step 5: |
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Start the program, turn on the power, and look into the eyepiece.
The program provides a delay of fixed
time
duration.
To change the amount of rotation of the disk that this corresponds
to, we can change the speed of the disk.
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Step 6: |
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Adjust the
0 to 6V
control on the power supply until the image is centered
vertically and horizontally.
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Step 7: |
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Experiment with the brightness, contrast, and AGC controls.
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