# Alternative calculation rule (P-VOLC-00011)

P-VOLC-00011 | Alternative calculation rule
Description | This parameter enables use of an alternative calculation rule for the ISO 230 error model. Use of this parameter depends on the interpretation of the measurement strategy which is possibly used. See [FCT-C26].
Parameter | alternative_model
Data type | BOOLEAN
Data range | 0/1
Dimension | ----
Default value | 0
Remarks |