ELECTRONIC PRINCIPLES - OD1647 - LESSON 1/TASK 3
FIGURE 97. MAIN FRAME CONTROLS.
(c) TRACE ROTATION Potentiometer. Controls the alignment of
trace with horizontal graticule lines.
(d) GRAT ILLUM Potentiometer. Controls the brightness of
the graticule lines.
(e) BEAM FINDER Switch. A springloaded switch. When
pressed, causes the display to be compressed to within the
graticule area, independent of control settings or applied
signals.
(f) VERTICAL MODE Switches. Alternateaction switches.
1 LEFT. Selects signal from the left hand vertical
amplifier.
2 ALT. Selects signals from the leftband and righthand
vertical amplifiers in alternating patterns for display.
Signals are switched after each sweep.
139
Previous Page
