Tektronix 222 Operator's Manual page 41

What the
Controls Do-222 DSO Operators
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Trigger
Button-displays the TRlG MODE menu to make
the trigger mode selection. The selected mode is boxed in the
menu list.
Press the
LJ
button repeatedly to cycle through the menu
choices while leaving the menu displayed. You may also select
a new mode by pressing the menu-select button next to the
menu item. The TRlG MODE menu is removed from the screen
after selecting a mode with one of the menu-select buttons.
Pressing or calling up another menu also removes the
menu from the display.
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Trigger
Button -displays theTRIG SRC control menu. The
current trigger source selection will be boxed in the menu.
Press the button repeatedly to cycle through the menu
choices while leaving the menu displayed. You may also select
a new mode by pressing the menu-select button next to the
menu item. The TRlG SRC menu is removed from the screen
after selecting a mode with one of the menu-select buttons.
Pressina or calling up another function also removes the
menu from the display.
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TRIGyD Indicator
-
indicates that the oscilloscope is being trig-
gered by the selected trigger source signal when lit.
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Button-resets the acquisition and display any time it is
pressed when menus are not displayed. This button is used
specifically for rearming the SSEQ trigger mode for a new acqui-
sition. Pressing it also resets the AVG and CONT ENV mode
displays and restarts the acquisition.