Programming the VGA Optica 4-9
January 2006
Automatic Cleaning and
Balance Function
Note: For Optica Analyzers with earlier versions of software, see
Appendix F.
Optica Analyzers with version XXX software have been upgraded to
include the ability to program the PACER self-cleaning and
rebalancing cycle to run once per day at a preset time. This is referred
to as a Clock Time Interval. When the unit is programmed in this
manner, the front panel PACER softkey is disabled. The Elapsed Time
Interval initiates the PACER at a preset time after the last PACER was
run. The automatic balance cycle will always run upon power up of
the analyzers.
To program the Automatic Cleaning & Balance Function on the
Optica VGA monitor:
1. Make sure the internal clock of the Optica has the correct time.
a. From the main screen enter Menu, then More, then Set Time
and Date.
b. Highlight the Date and Time fields and use the Keypad and
Softkeys to set the correct time.
2. Set the Time Programmed Balance Cycle.
a. Enter Menu and go to the Automatic Balance Section.
b. Open the Type pull down menu and choose one of the four
selections (see Table 4-6 below).
Note: The PACER function will provide more thorough cleaning than
the AUTO function because it first develops a thick dew/frost
layer into which soluble contaminants dissolve. When heated,
some of the contaminants are flash-evaporated and the
remaining residue accumulates in clusters, resulting in an
approximately 85% cleaner surface. The PACER cycle
generally takes longer to complete.
Table 4-6: Automatic Cleaning and Balance Functions
Item Function Type
AUTO Heats the mirror and balances the optics. Elapsed Time Interval
PACER
First cools the mirror to develop a thick dew/frost
layer, then heats and balances the optics.
Elapsed Time Interval
AUTO-D Heats the mirror and balances the optics. Clock Time Interval
PACER-D
First cools the mirror to develop a thick dew/frost
layer, then heats and balances the optics.
Clock Time Interval
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