Hitachi V-151F - Page 11

VARIABLE
This is a vertical axis sensitivity fine
adjuster which is capable of attenuating to
less than 1/2.5 by indication of each range of
VOLTS/DIV.
VARIABLE knob
Amplitude increases
Q
o
CAL
^ 000-
Amplitude decreases
To measure a voltage by the use of voltage
sensitivity indicated by VOLTS/DIV, turn the
VARIABLE clockwise fully to CAL. (Click stop).
CAL .5V (Calibration wave)
Signal output terminal for amplitude and probe
calibration. The frequency is approx. IKHz.
J 1_ 1°'
5Vp-p
TIME/DIV (Sweep speed selection)
This is sweeptime change switch. A 19-position
switch from 0.2yS/DIV to 0.2S/DIV selects 19
fixed sweep speeds. When making a measurement
at a given TIME/DIV setting, adjust variable
knob fully clockwise to CAL. When the
switch is set to (X-Y) position, X-Y oscillo
scope works with EXT. TRIG or [X] IN as X axis
and INPUT as Y axis.
SWP or [X] VAR (Time adjustment of Sweep Time
and sensitivity fine adjustment of X axis)
This is fine adjustment covering time not
covered by Time change-steps. When measuring
with an indication of TIME/DIV, turn VARIABLE
fully clockwise to CAL. (Click stop).
SWP VAR
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CAL
o
Expanded
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Contracte d
In X-Y operation, this is a horizontal axis
sensitivity fine adjuster which is capable of
attenuating from about 0.2V/DIV to zero.
POSITION (PULL xio MAG)
The knob is used to position the trace in the
horizontal direction. When the knob is pulled
out, the sweep is magnified by a factor of 10.