Fluke 9640A Series, Instruction Manual

Page: 87 / 324

Local Operation
Operating the Instrument
3
3-39
Setting Reference Switching Preferences
Table 3-13 shows the
Reference Switching Preferences
screen.
There is a danger when switching between an established Level setting and the Reference
Level setting that the new setting may damage the load. The user may therefore prefer the
9640A to switch to standby, display the new settings and request confirmation through
user selection of
Output ON
. Confirmation and the criteria for confirmation may be
established on the
Reference Switching Preferences
.
Use the following procedure to set the
Reference Switching Preferences
:
1. Press

to open the
Instrument Setup
screen.
2. Press the
Lev. Sine Preferences
soft key to bring up the
Leveled Sine Preferences
screen shown in Table 3-13.
3. Press the Reference Preferences key to bring up the Reference Switching Preferences
screen
4. Sequentially select each of the preference fields using the soft keys to the right of the
screen.
While each field is selected, use the soft keys along the bottom of the display or the
scroll wheel to choose a preference.
5. To exit the screen, press the
Previous Menu
soft key, or press one of the signal
function keys (

,

, or

).
Table 3-13. Reference Switching Preferences
ead342f.bmp
Field Preferences
Confirmation Select Confirmation Always or if new output is above the Absolute
level, or if it is bigger than the current value by the Difference.
Disable, Always, Absolute, Increase of
Absolute Value Enter the threshold level above which Confirmation is needed.
Increase of Value Enter the increase threshold above which Confirmation is needed.