Specifi Cations; Front Panel Elements - Brief Description; Trace Rotation - Hameg HM303-6 Service Manual

S p e c i f i c a t i o n s
Element
POWER
(pushbutton + LED)
INTENS
(knob)

TRACE ROTATION

(potentiometer;
adjustment with
screwdriver)
FOCUS
(knob)
Y-POS. I
(knob)
Y MAG. x5
(pushbutton switch)
Y MAG. x5
(pushbutton switch)
Y-POS. II
(knob)
SLOPE
6
Subject to change without notice
Front Panel Elements – Brief Description
Function
Turns scope on and off.
LED indicates operating
condition.
Intensity control
for trace brightness
To align trace with horizontal
graticule line. Compensates
influence of earth's magnetic
field.
Focus control for
trace sharpness.
Controls vertical position
of channel I display.
Inoperative in X-Y mode.
When depressed, increasing of
Y-sensitivity CH I 5 fold (max.
1mV/div.)
When depressed, increasing of
Y-sensitivity CH II 5 fold (max.
1mV/div.)
Controls vertical position
of channel II display.
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).