Calculation of availability with scheduled downtime

Calculation of availability with scheduled downtime

Hi
I have a business appl. with an opening time of 07:00 - 22:00 (mon-fri).
I have therefore defined scheduled downtimes for all other intervals during a normal week.
 
I therefore expected the availability to be meaured as uptime / (uptime + downtime) - and leaving the scheduled downtime totally out of the equation. But it is calculated as uptime / (uptime + downtime + scheduled downtime).  
 
I can define scheduled downtime as uptime, which will use the equation (uptime + scheduled downtime) / (uptime + scheduled downtime + downtime).
 
Is there a way to configure App.Manager to give me availability as uptime / (uptime + downtime) ???
 
Regards
Mogens Hald Kristensen

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