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TDS 620A, 640A & 644A User Manual
3Ć65
Help
The onĆline help system provides brief information about each of the digitizĆ
ing oscilloscope controls.
To use the onĆline help system:
Press HELP to provide onĆscreen information on any front panel button,
knob or menu item (see Figure 3Ć36).
When you press that button, the instrument changes mode to support
onĆline help. Press HELP again to return to regular operating mode. WhenevĆ
er the oscilloscope is in help mode, pressing any button (except HELP or
SHIFT), turning any knob, or pressing any menu item displays help text on
the screen that discusses that control.
The menu selections that were displayed when HELP was first pressed
remain on the screen. OnĆline help is available for each menu selection
displayed at the time the HELP button was first pressed. If you are in help
mode and want to see help on selections from nonĆdisplayed menus, you
first exit help mode, display the menu you want information on, and press
HELP again to reĆenter help mode.
Figure 3Ć36:ăInitial Help Screen
Operation