Tektronix SPG70UP Instructions Manual page 16

How to install and configure Option DPW
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c. Press the up (▲) or down (▼) arrow button to select SYSTEM :
DIAGNOSTICS : POWER SUPPLY 1. The second line of the display
will list the number of hours the supply has been the active supply and the
backup supply.
d. Press the right (►) arrow button to display the number of temperature
weighted hours of the first supply as shown below. Note the number of
hours of hours shown.
e. Press the up (▲) or down (▼) arrow button to select SYSTEM :
DIAGNOSTICS : POWER SUPPLY 2.
f. Press the right (►) arrow button to display the number temperature
weighted hours of the second supply. Note the number of hours of hours
shown.
3. If the Power Supply module with the greatest number of temperature weighted
hours is not the currently the preferred supply, then continue this procedure.
Otherwise, you do not need to change the preferred supply configuration.
4. If you want to change the preferred supply configuration, press the SYSTEM
button to access the SYSTEM menu.
5. Press the up (▲) or down (▼) arrow button to select SYSTEM : POWER
SUPPLY PREFERRED SELECT.
6. Press the left (◄) or right (►) arrow button to display the supply you want
to be the primary (active) supply: Power Supply 1 or Power Supply 2. The
second line of the display shows the supply status: Active, Preferred or
Inactive.
NOTE.
When viewed from the front of the instrument, Power Supply 1 is the left
Power Supply module and Power Supply 2 is the right Power Supply module. This
matches the orientation of the PWR1 and PWR2 indicators on the front panel.
7. If status of the supply is Inactive, press the ENTER button to change the
status to Active, Preferred. The front-panel indicator for the selected supply
should change to bright green.
SPG70UP Field Upgrade Instructions