CIRAS-3 Operation Manual V. 1.09  145  support@ppsystems.com 
 
Settings (F2) 
Settings are essentially defined as operational environments that are recreated each time that CIRAS-3 is 
powered on.  The options that you choose here are normally your typical working options which in this 
case is closed system measurement of soil respiration or canopy assimilation.  Press TAB to move down 
to Accessory and select SRC-1 or SRC-2 Soil Respiration Chamber or CPY-4 or CPY-5 Canopy 
Assimilation Chamber.  
SRC-2 Soil Respiration System Settings  
   
 
CPY-5 Canopy Assimilation Chamber Settings