TM 11-5840-281-12-1
1-15.
COMPONENT PRINCIPLES OF OPERATION. (CONT)
PULSE GENERATOR
The pulse generator can be subdivided into four functional subsections consisting of nine plug-in circuit cards. The four
subsections can be identified as the range mark circuits, sweep generating circuits, cursor generating circuits, and cursor
control circuits. The range mark subsection generates accurately spaced 1-mile range marks for the 5- and 10-mile
display ranges, 5-mile range marks for the 20- and 40-mile display ranges and 10-mile range marks for 80-mile display
range (IFF operation). The sweep generating subsection provides a logarithmic 5 and 10-mile and linear 20- and 40-mile
time base for precision mode ranges and a linear time base for all search mode ranges. The cursor generating
subsection produces the courseline cursors for the azimuth display, and the glidepath and elevation cursors for the
elevation display. The cursor control subsection uses antenna angle data and reference voltages to properly time and
switch the cursor generating circuits.
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