Elenco 30MHz Dual Trace - Manual (Page 48)

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OPERATING INSTRUCTIONS
2. Sweep Magnification
When a certain position of the displayed waveform is needed to be expanded time
wise, a faster sweep speed may be used. However, if the required portion is far from
the starting point of the sweep, the required portion may run off the CRT screen. In
such a case, pull out (set in the x10 MAG state) the POSITION switch KNOB. When
this is done, the displayed waveform is expanded by 10 times to right or left with the
center of screen at the center of expansion.
The sweep time during the magnification operation is obtained as follows:
(Value indicated by TIME/DIV switch) x 1/10. Thus, the unmagnified maximum
sweep speed (0.1μ sec/DIV) can be made faster with magnification as follows:
0.1μsec/DIV x 1/10 = 10 nsec/DIV
When the sweep is magnified and the sweep speed has become faster than 0.1
sec/DIV, the trace may become darker.
3. MAIN/MIX/DELAY Switch
When turn the switch to MAIN position, the waveform of display on the screen is main
sweep only.
When turn the switch to MIX position, the waveform of display on the screen is shown
in Fig.5.
10 x magnification
Fig.4
Any part can be covered by means
of POSITION control.
Start point C mixed point
A B
Fig.5