HP 8642A Operation And Calibration Manual page 172

Operation
CD
CD
SETTING MODIFICATIONS
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Instrument Preset enables you to set the Signa! Genera-
tor to an initialized state_ Partial Preset ([
SHIfT)
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is a quick way to set the Signal Generator to another
Initialized state without affecting some instrument
settings; for example, Partial Preset does not turn off
the EMF or Amplitude Relative mode_
Holding the Shift key down during power-up until
instrument settings are displayed bypasses the power-up
checks.
The Knob usually modifies a specific digit in the
display. The keys can select which digit will be
modified. The keys can also select Knob Hold or Knob
Increment
The Step keys enable you to step a function by the
value that was set using the [I~ff
)
key.
The Off/On key toggles an active function off or on
with a single keystroke
--~------- -~~--------------------------------------------I
3-136
The Entry Off function disables the active function as
well as all Knob-related functions_
Figure 3-16. Functions Related to Modifying Settings