Fluke 9640A Series, Instruction Manual

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9640A
Instruction Manual
3-16
Note
The Instrument supports multiple unit scales for display and editing. Each
scale has finite resolution, and the finite steps of each scale will not
necessarily align. It is therefore possible that conversion of a setting to a
different unit followed by conversion back to the original unit could cause a
one-step shift in the setting.
The Instrument User Interface specifically avoids this potential problem.
That is, it allows the user to view a setting in an alternative unit and then
return without disturbance.
Expanded Settings – The Horizontal Soft Keys
The horizontal soft labels across the bottom of the screen provide prompts to expand the
current definition, add/remove fields, or call another screen (menu selection).
Preferences Soft Key
All of the screens for settings preferences are listed on and accessible from the
Instrument Setup
screen which can be called by pressing

. However, settings
preferences relevant to the current mode of operation are more readily accessible via the
bottom-right soft key on the
Leveled Sine, Modulation
and
Sweep
screens.
Modulation
Preferences
are shown in the following screen
ead10f.bmp
Modulation Preferences
The principle of the focus field and its selection by way of the vertical soft keys also
apply to preferences screens. The cursor, indicated by two parallel bars highlights a
scrolling list of possible entries. The spin wheel or all four cursor keys can be used to
scroll the list, and the
Exit
soft key completes the update, returning the display to the
previous screen. Where the scroll list is short (as in the preferences screens), the
horizontal soft keys give more convenient direct access to the preferences.