20
Subject to change without notice
Element
Function
POWER
Turns scope on and off.
(push LED)
LED indicates operating
condition.
INTENS
Intensity control
(knob)
for trace brightness
TRACE ROTATION
To align trace with horizontal
(potentiometer;
graticule line. Compensates
adjustment with
influence of earth’s magnetic
screwdriver)
field.
FOCUS
Focus control for
(knob)
trace sharpness.
Y-POS. I
Controls vertical position
(knob)
of channel I display.
Inoperative in X-Y mode.
Y MAG. x5
When depressed, increasing of
(pushbutton switch)
Y-sensitivity CH I 5 fold (max.
1mV/div.)
Y MAG. x5
When depressed, increasing of
(pushbutton switch)
Y-sensitivity CH II 5 fold (max.
1mV/div.)
Y-POS. II
Controls vertical position
(knob)
of channel II display.
SLOPE
Selects the slope of the trigger
signal.
Element
Function
SLOPE
/ = rising edge;
(pushbutton switch)
\ = falling edge.
TR
LED lights, if sweep is triggered.
(LED)
LEVEL
Adjustment of trigger level.
(knob)
X-POS.
Controls horizontal
(knob)
position of trace.
X-MAG. x10
10:1 expansion in the X direction.
(pushbutton switch)
Max. resolution 10ns/div.
(inoperative in XY-mode).
VOLTS/DIV.
Channel I input attenuator.
(12 position
Selects Y input sensitivity
rotary switch)
in mV/div. or V/div.
in 1-2-5 sequence.
VAR. GAIN
Fine adjustment of Y amplitude
(knob)
CH I. Increases attenuation factor
min. by 2.5 (left hand stop).
For amplitude measurement
must be in CAL. position
(right hand stop).
CH I/II-TRIG. I/II
No button depressed: CH I only
(pushbutton switch)
and triggering from channel I.
When depressed, channel II only
and triggering from channel II.
(Trigger selection in DUAL
mode).
Front Panel Elements HM 303-
6
(Brief Description - Front View)
