ELECTRONIC PRINCIPLES - OD1647 - LESSON 1/TASK 3
between 30 Hertz and 50 megahertz are accepted intact.
b AC LF REJ. When pressed, the dc components of the
signals are rejected and ac signals below approximately 30
kilohertz are attenuated. AC signals between 30 kilohertz and
50 megahertz are accepted intact.
c AC HF REJ. When pressed, the dc components and signals
below 30 Hertz and above 50 kilohertz are attenuated. Signals
within the range of 30 Hertz to 50 kilohertz are accepted intact.
d DC. When pressed, all signals from dc to 50 megahertz
are accepted.
3 AMPLIFIER SOURCE Switches. Prvides for the selection of
the main trigger source and indicates the selection.
a INT. When pressed, the trigger signal is obtained from
the associated vertical amplifier.
b LINE. When pressed, the trigger signal is obtained
from a sample o the oscilloscope input power frequency.
c EXT. When pressed., the trigger signal is obtained
from the external source through the MAIN TRIG IN connector.
d EXT 10. Same as the EXT, except that the trigger
signal is attenuated to approximately 10 percent of the input
amplitude.
(e) POSITION Potentiometer. Provides for the coarse
adjustment of the horizontal position of the trace.
(f) FIND Potentiometer. Provides for the find adjustment of
the horizontal position of the trace.
(g) SWP CAL Potentiometer. Provides for adjustment to the
main gain of the dual time base to the main frame for calibrated
sweep rates.
(h) MAG Switch. Provides for the selection of horizontal
magnification. X1 (IN) selects the unmagnified sweep at the
basic rate indicated by the TIME/DIV switch setting; X10 (OUT)
increases the sweep rate of the main and delayed sweep
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