Grass Valley iControl V.4.43 - Manual (Page 575)

iControl
User Guide
565
Figure 9-22
The asterisk (*) next to the comparison group name disappears, indicating the change to
the comparison group configuration is saved.
Figure 9-23
Configuring a Source as the Reference Source in a Comparison Group
IMPORTANT: The reference source you select should come from a point in the signal path
where the fingerprint is known to be acceptable. In addition, the reference
source should be upstream of the probed source(s) in the signal path.