Grass Valley Switcher Products - Manual (Page 67)

Switcher Products — Protocols Manual67
Editor Commands
Auto and Key Transition Rate (CC and CD) Commands
The Transition Rate commands set the rates used by the switcher to
perform a transition. They can also cause a transition to take place by
setting the “execute bit.” The “next transition” which will occur should
have been previously selected, either manually at the panel or by sending
a Transition Mode command.
Five transition rates may be set in the switcher:
• Auto transition rate,
• Key 1 transition rate,
• Key 2 transition rate,
• Key 3 transition rate, and
• Key 4 transition rate.
Which rate is used depends on:
• The “next transition” which has been selected, and
• The effects address.
The transition rates that are set depend on the effects address and the keyer
bits in the units digit of the rate data. The effects address specifies which
M/E. The keyer bits control which of the keyer transition rates are also set.
The Auto Transition Rate command is primarily intended to set the auto
transition rate but can also set the Key 1, 2, 3 and Key 4 transition rates. If
the execute bit is set, the auto transition will be performed. The Key transi-
tion rate command only sets Key transition rates.
PGM–PST/DSK (Zodiak Only)
On Zodiak systems, the transition rate depends on the state of the “next
transition”. If the next transition is set only to Background, then the auto
transition rate is used. if the next transition is set to DSK 1, DSK 2, or DSK
3, or all three, then the key transition rate is used. If Background and DSK
1, DSK 2, or DSK3 is selected, then the Background (PGM–PST) transition
has precedence over the DSK transition and the auto transition rate is used.
Table 58. Auto and Key Transition Rate Commands
Function Byte Count Effects Address Command Code Message
Auto Transition Rate 05 EX CC HD TN UN
Key Transition Rate 05 EX CD HD TN UN