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| Camera test steps
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The main tests of the camera are color reproduction, illumination, backlight
compensation, followed by the measured ball distortion, power consumption, the
minimum voltage, the following first clarity and color reproduction, as well as
illumination, backlight compensation measured steps to introduce Click.
1. Clarity of measurement: multiple camera tests, they should use
the same lens (recommended to make the coke, the variable lens), to test the
cards in the centre circle around edge of the monitor screen, is clearly and
accurately the number of To have given the scale of a total of 10 groups and 10
vertical lines Group horizon. On behalf of the vertical and horizontal
resolution clarity and a corresponding group has been given a few lines. 350
vertical lines such as the level of 800 lines, then the best in black and white
monitors. Testing can be focused on the vision, can also be measured-edge focus.
Can be used along with the two best, this camera can see the difference (the
distance convergence).
2. Color reduction of the test: This test should
be selected parameters of color monitors. First of all long-distance
observation of characters, costumes, to see whether color distortion, with
vivid color contrast of objects, look at the camera response sensitivity,
with color pictures on the front of the camera, watching the screen outlined
in the clarity of, too short, again to campaign Color objects camera, to see whether
color tailing, delay, fuzzy, and so on. Test conditions so the camera and
illumination in the 50 V to be in the 50 +10 V measuring illumination
circumstances, that is, each of the camera and illumination on the basis of plus
10 volts, and aperture should remain the closest state.
3. Illumination:
the camera will be placed darkroom, before and after the darkroom for active
self-220 V Chi-lights, the regulator set up to regulate voltage regulator and
the high dark room lights to regulate the brightness, from 0 V voltage can be
transferred to 250 V. Indoor light from the dark can also be transferred to most
that the tests are open to the camera aperture to the largest recorded at a
value of the Minimum illumination (the Active lamp regulator for dark to see
unclear darkroom built-in screen) then Aperture to a minimum to record the value
of one of the most Minimum illumination, but also before and after the surge
that the lights were out.
4. Backlight compensation: This parameter
tests There are two ways: one is in the dark room, the front of the camera
lights open-side surge, transferred to the brightest, and then placed in the
bottom of the lamp or a picture of text, video cameras , To Image and
text can see that thorns do not glare screen and adjust the AL, AX Stubbs file
switch, to see whether changes, which the best effect. The other is sunny in the
case of the camera to the window as, at this time to see images and text can see
clearly.
5. Spherical distortion: watching distortion of the test card
placed in front of the camera so that the entire body appears on the screen to
see whether oval round ball, the camera moved forward, to see whether Larger
centre circle and then test-distance, angle, Box distortion, such as whether
arc.
6. Power consumption: the minimum voltage and current measurements
using a multi-meter, the use of small voltage regulator can adjust
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