Grass Valley Switcher Products - Manual (Page 105)

Switcher Products — Protocols Manual 105
Section
4
DPM CPL Protocol
Introduction
This section describes the Control Point Language (CPL) protocol that can
be used between a Kalypso or Zodiak Digital Production switcher
(“switcher”) and an external digital picture manipulator (“DPM”).
The interface supports effect recall and run (including the switcher’s run
lever arm), control of switcher aux buses by the DPM when used as input
selectors, and on air tally involving the DPM.
General Background about Switcher/DPM Integration
The switcher/DPM integration involves the following functions:
• Effects on both the switcher and the DPM can be triggered and run
under user control from the switcher panel. The DPM effect number
can be any number in the range of DPM effects, and the number (not
the effect itself) is stored in the switcher’s E-MEM register when a
LEARN operation is done at the switcher. When a register is recalled at
the switcher, this effect number will be sent to the DPM for effect recall.
• DPM source selection can be provided by the switcher's aux buses. One
aux bus pair can be assigned to each DPM channel in a multi-channel
configuration. Switcher aux buses support field accurate front/back
source switching for the DPM.
Note Sources changes are synchronized to vertical interval by the switcher. There-
fore this interface does not support front/back switching for nonplanar
effects such as page turns.