Accu-Chek Aviva Combo Advanced Owner's Booklet page 105

Meal Bolus
The following formula is used to calculate the bolus for meals:
Meal Bolus = Carbohydrate Intake ×
Currently Allowed Blood Glucose Value
The target range average value used in the calculation of the correction bolus, as shown below, changes with
the definition for the time blocks.
Consequently, the currently allowed blood glucose value is calculated as follows:
Currently Allowed
Blood Glucose Value
When no meal rise or correction bolus acting time is currently in effect, a value of "0" is substituted for these
parameters in the formula.
Target Range Mean Value + Meal Rise +
=
according to time block definition
Insulin
Carbohydrates
from carbohydrate ratio
∑
Blood Glucose Range Covered
by Correction Bolus
current
active meal currently acting correction boluses
99