Grass Valley DD35 Family v.3.1.5 - Manual (Page 491)

5. Application Notes DD35 Production Switcher
5 – 5 Operating Instructions – Rev. 16 / 10.2001
D
Key4 as PST Slave
When changing a PST source in the NonLayered mode, procedure is as fol-
lows: PST is switched via the LAN Substitution Table to a substitute source. The
original message is transmitted to Key4 where Key4Fill is also changed via
LAN Substitution Table.
LAN–Msg
PP–PGM–
Source
1
LAN
Substitution
Table
LAN
Substitution
Table
3
2
5 5
4
PP–PGM
Source
State
PP–PGM
Source
Hardware
Key4Fill
Source
State
Key4Fill-
Source
Hardware
Key4Fill bus is
coupled to PST bus
Figure 4 LAN Input Source Substitution & PST Bus to Key4Fill coupling