Vertical Positioning - Tektronix 222 Operator's Manual

222 DSO Operators-How It Works
4.8
VOLTSIDIV SCALING
The VOLTS/DIV switch controls the amplitude scaling of the selected
channel only. The display amplitude of the selected channel changes
as the VOLTSIDIV setting increases or decreases. The larger the dis-
play amplitude needed, the smaller the deflection factor you need
and vice versa. The on-screen VOLTS/DIV readout changes in step
with the switch from 5 mV to 50 V until either range limit is reached.
Continuing to turn the knob past the range limit causes no further
readout change.
Press the
01
ICH
SELECTICOUPLING button to select the
channel to be scaled if itsVOLTS/DIV readout is not boxed in the
display.
VOLTSIDIV
Rotate the
0
knob (outer knob of the two concentric knobs
in the Vertical section) to scale the selected channel vertically.
4.9
VERTICAL POSITIONING
Press the or
ICH
SELECTICOUPLING button to select the
channel trace to be positioned (if that trace is not the active
channel)
.
VOLTSIDIV
Rotate the Vertical
@
knob (inner knob of the two concentric
Vertical control knobs) to position the channel trace vertically.
The positions of saved waveforms are not affected by this control. If
the trace being positioned is the trigger source, the trigger point "
+
"
indicator will follow the waveform (even when the trace is turned off).
If the trigger source trace is positioned off screen, the "
+
"
will be at
the top or bottom of the screen to indicate the direction to the off-
screen trace.