CALIBRATOR AND DISPLAY CONTROLS
(FIGURE 5)
VERTICAL CONTROLS (FIGURE 6)
10. SCOPE POWER-Pushbutton switch turns the oscil
loscope on (ini and o ff (out).
11. INTENSITY-Controls the brightness of the crt
display. Turn the control clockwise to increase display
brightness.
The intensity level should be set to the lowest visible
display to prolong life o f the crt.
12. ON (FLASHES WHEN LOW I-LED indicator that
glows green when SCOPE POWER is on and power is
applied to the oscilloscope
The LED flashes on and o ff when batteries require re
charging and then goes out when the batteries are complete
ly discharged.
13. .3V CAL OUT (Calibrator)-Pin connector output
provides an internally generated 0.3 volt, 1 kHz square
wave. Calibrated voltage is useful for checking vertical de
flection factor and probe compensation.
14. POSITION (CHI or X and CH2 or Y)-Controls the
vertical position of the crt display for each channel. In the
X-Y mode of operation, the CHI (X) controls the position
of the display horizontally and CH2 (YJ controls the posi
tion of the display in the vertical direction.
15. VOLTS/DIV (CHI and CH2)-Selects vertical de
flection factor of signals applied to the CHI and/or CH2
INPUT connectors. The CAL (Variable! control must be in
the CALibrated detent for the indicated deflection factor.
16. VOLTS/DIV CAL (Variable) (CHI and CH2)-Control
(concentric with the VOLTS/DIV switch) provides contin
uously variable uncalibrated deflection factors between the
calibrated settings of the VOLTS/DIV switch. Extends the
maximum deflection factor to at least 25 volts per division.
17. 5 DIV CAL-Position on the VOLTS/DIV switch
that internally connects a calibrated signal to the vertical
preamplifier circuit. Useful for checking instrument vertical
deflection gain.
18. PULL INVERT-Pull the Variable knob to the out
position to invert the CH2 signal display.
8
305 Operators
REV A SEP 1979
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