Tektronix SPG8000A, User Manual

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SPG8000A User Manual 37
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 .
Make a n ote of 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. To change the preferred supply configuration, press SYSTEM to
access the SYSTEM menu.
5. Press the u p (▲) 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 ENTER to change the status
to Active, Preferred. The front - panel indicator for the selected supply
should change to bright green.
Hot-Swap Power Supply Module
This procedure describes how to replace a p ower s upply module while the
instrument is in operation. To hot- swap a p ower s upply module:
WARNING: Disconnect the power cord from the Power Supply module
before you remove the module from the instrument. Also, do not connect
a power cord to the Power Supply module while the module is not