TM 1-6625-476-30
7-6
7-6. TEST DESCRIPTION. (CONT)
TEST MENU (VIDICON TUBE)
ELECTRICAL TESTS
10. ALL ELECTRICAL TESTS
PRE-ALIGNMENT TESTS
20. ALL PRE-ALIGNMENT TESTS
VIDEO TESTS
30. ALL VIDEO TESTS
31. VIDEO PEAKING TEST
32. VIDEO AMPLITUDE TEST
33. VIDEO SNR TEST
34. CTF TEST
99. EXIT
RASTER GEOMETRY TESTS
40. ALL RASTER GEOMETRY TESTS
41. RASTER ROTATION TEST
42. TEMPERATURE CONTROL TEST
43. HORIZONTAL SIZE TEST
44. VERTICAL SIZE TEST
45. BORESIGHT AND SCALING TEST
46. GEOMETRIC DISTORTATION TEST
SIGNAL UNIFORMITY TESTS
50. ALL SIGNAL UNFORMITY TESTS
51. SHADING TEST
52. BLEMISH TEST
53. AFTER IMAGE TEST
ENTER NUMBER OF THE TEST TO BE PERFORMED AND PRESS <RETURN>:
Paragraphs a through e below explain the vidicon tube test options.
a. ELECTRICAL TESTS. This test monitors certain critical camera voltages for proper amplitude. No
adjustment is provided.
b. PRE-ALIGNMENT TESTS. The prealinement tests allow you to make coarse adjustments of the
raster geometry and signal uniformity tests before those tests are performed so that the parameters are
measurable during those tests.
(1)
RESOLUTION. Check and adjust focus and astigmatism.
(2)
UNIFORMITY. Check for uniform shading of the target and adjust shading potentiometers if
necessary.
(3)
PREROTATION. Check mechanical alinement of the vidicon. Check size and centering of the
target.
(4)
BEAM SATURATION TEST. Check the vidicon beam current for proper saturation. Adjustment
may be necessary if the target is too dim, too bright, or indistinct.
c. VIDEO TESTS. These tests check the vidicon output for proper video.
(1)
VIDEO PEAKING TEST. Adjust for proper black-to-white transition in the video output to
eliminate smears and bleeding.
