First
of all you have to take into account your data
source type. For text files and Microsoft
Excel
worksheets DataPoint is watching when the file
is modified. In that case DataPoint will
re-open
the file and read its data. Microsoft Excel worksheets
connections are slower to read than a text
file.
A second possibility is a high refresh rate
for database connections. Open Slide show properties
and go to the database tab. Select your database
connection and click Edit. The refresh rate (in
milliseconds) sets a timer to requery your database
information. You can lower this rate is the presentation
should be updated more frequently.
Some additional words need to be said about
Microsoft Access databases. By default there
is a delay in Microsoft Access between an update
and the physical write action to the database.
This can be influenced by changing a registry
setting. Click Start on your desktop menu and
choose Run... Enter regedit and click OK. Go
to My Computer \HKEY_LOCAL_MACHINE \SOFTWARE
\Microsoft \Jet \4.0 \Engines \Jet 4.0. Double
click on the PageTimeout entry and set the Base
to Decimal. At Value data you enter the minimum
time in milliseconds you want to wait for an
update. Decrease this setting to make the data
available to other programs more current. A value
of 100 or 200 milliseconds for critical applications
should be no problem. For more information please
consult the Microsoft documentation.
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