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3-4E
3.2.2
3.2.3
C.R.T. control area
Knob/control
Description
POWER
Mains ON/OFF switch
INTENS
Continuously-variable contro! of the trace
TRACE ROTATION
FOCUS
ILLUM
Up-down control area
brilliance on the C.R.T. screen.
Screwdriver control for aligning the trace in
parallel with the horizontal graticule lines.
Continuously-variable control of the focussing
of the C.R.T. electron beam.
Continuously-variable control of the graticule
illumination.
LCD
UP-DOWN switch
Description
=
7
=
Selection of the ch.A deflection coefficients
ti
v
;
ru
a
from 2 mV/DIV...10 V/DIV ina
SOG0D..) ov iile 10
1-2-5 sequence.
Selection of the ch.B deflection coefficients
from 2 mV/DIV...10 V/DIV ina
1-2-5 sequence.
Selection of the main time base deflection
coefficients from 50 ns/DIV...0,5 s/DIV in
a 1-2-5 sequence.
Selection of the delayed time base deflection
coefficients from 50 ns/DIV...1 ms/DIV in
a 1-2-5 sequence. The DTB control is
electrically coupled with the MTB up-down
control. The DTB time coefficient can never
be slower than one step faster than the value
of the MTB time coefficient. (exception is
the fastest position of the MTB-speed).
Delay time multiplier control.
—
LCD is time-related when the MTB is
calibrated and when STARTS is selected
as DTB trigger source
—
LCD is division-related when the MTB ts
not calibrated or when DTB is in triggered
condition
NOTE:
when switch is depressed for a short
period, delay time changes step by
step.
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