Grass Valley XtenDD v.4.0.x - Manual (Page 16)

Supplement Software Release V4.0.x XtenDD / DD35 Production Switchers
12 Operating Instructions -- Rev. 2 / 1.2003
2.6 USING THE KEY BUS AS PGM / PST EXTENSION
With the software release V4.0.x the PBM and PST buses can be delegated to the
Key bus button row. For example, in this case the 1st level of the video sources can
be selected in the original button row and the 2nd level in the Key button row.
To do so, please use the UPK funktionality of the X--Bar / T--Mem button.
Select the Install / Panel / UPK menu and modify the respective UPK (see menu
example below).