MIL-PRF-1/1065G
TABLE I. Testing and inspection - Continued.
3/ The following values are to be used in place of those specified in method 5236:
Negative grid
Negative grid
Minimum O-bias
Minimum O-bias
current A
current A
cutoff voltage
cutoff voltage
19
250
38
480
20
250
39
500
21
250
40
520
22
250
41
540
23
250
42
560
24
250
43
580
25
250
44
600
26
270
45
620
27
285
46
640
28
300
47
660
29
310
48
680
30
335
49
700
31
350
50
725
32
370
51
750
33
390
52
775
34
405
53
800
35
425
54
825
36
445
55
850
37
460
56
875
4/ Use JEDEC No. 127 focus coil, or equal. Focusing coil current shall be determined at the focus setting used in the astigmatism
test.
5/ The two sets of neck supports, referenced in method 5101, shall be spaced 1.125 inches (28.58 mm) and 3.375 inches (85.73
mm) below reference plane.
6/ Line width A shall be the maximum line width obtained in the astigmatism test.
7/ With a single line, 4.5 inches (114.30 mm) in length and 1/60-second duration, repeated at a rate of 60 Hz, modulate grid No. 1
with 1-microsecond pulses. Adjust the peak beam current to 200 A dc and focus for the most circular spot at the center of the
screen. Display a partially merged nonlinear raster and note the orientations for greatest and least mergings as the raster is
rotated. Maintain this focus and proceed according to method 5226, to determine the line widths for those two orientations.
Astigmatism (the ratio of the maximum to the minimum line width) shall not exceed the value specified.
4
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