Tektronix 222 Operator's Manual page 39

What the Controls Do-222 DSO Operators
When XI0 MAG is on, the control scrolls through the expanded
waveform. If the trigger point is positioned off screen to the left or
right, the Trigger Position "
+"
indicator remains at the edge of
the display area to help you locate your position in the expanded
waveform. In XY display mode, the Horizontal Position control
does not position the display. Use the CH 1 POSITION control to
move the display horizontally.
@
X I 0 MAG Switch (inner knob)
-
switches between normal and
XI0 horizontal magnification when pressed.
With XI0 MAG on, the portion of the display at the center hori-
zontal graticule line is expanded by ten times. WhenX10 MAG is
on, a XI0 character is seen in the bottom line of the readout, and
the SECIDIV readout reflects the horizontal scaling of the mag-
nified waveform display.
@
Button
-
auto ranges on the signals at the probe tips when
pressed to provide the user with a quick setup for viewing the
waveforms. If a channel has a signal applied, it will be turned on
and vertically auto ranged.
See the Supplementary Info in Section 6, para. 6.1, for the events
that occur with an AUTO SETUP.