MIL-PRF-1/1261H
TABLE I. Testing and inspection - Continued.
3/ The cylinder shall be 5 inches (127 mm) long and have a 1.503 inch (38.18 mm) maximum diameter.
4/ Focusing electrode voltage shall be measured as follows: With a standard 35-to-100-line raster, modulate grid 1 by 1
microsecond pulses to produce a polka dot pattern. Adjust the beam current to peak value of 100 microamperes. Adjust the
focus voltage to obtain the best circular spot at the center of the tube face. A comparator fitted with a reticle having circles
approximately the size of the spot facilitates focusing. The focusing voltage obtained in this manner is the focusing electrode
voltage.
5/ Use an overscanned 35-to-105-line raster pattern with not less than .250 inch (6.35 mm) spacing between adjacent lines; then
adjust for best focus at center of tube.
6/ Line width A shall be obtained at the tube orientation producing poorest line width at the center of the tube. The tube position
which produces the poorest line width can be found by making the raster nonlinear. This can generally be accomplished by
adjustment of vertical linearity control. Measurement of line width A shall be made as follows: Compress the raster until part is
merged and part is expanded. Rotate the tube slowly through 180 degrees and note spacing of raster lines, for example: If
portions of expanded raster become merged, line width has become poorer; if merged portion of raster becomes expanded,
line width has improved.
7/ This test to be performed at the conclusion of the holding period.
5
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business