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Software Setup
Control Connection
Three forms of control connection to the DPMs are supported.
These are
■ CPL (Control Point Language)
■ PBusII (Peripheral Bus II)
■ GPIs
Control Point Language — CPL is the communication protocol used
to couple the switcher and Kaleidoscope. One of its uses is to
convey the physical-to-logical channel mapping information
described previously. It is also used for run control of effects, aux
bus selection (including front/back switching) and tally.
When
DPM TYPE is set to either KRYSTAL or KSCOPE in the DPM Setup
Menu, CPL is automatically invoked. PORT ASSIGN should be set to
PORT A1.
Also, when either KRYSTAL or KSCOPE is selected as the DPM TYPE,
aux bus control is automatically assigned to
Krystal/Kaleidoscope. With Krystal/Kaleidoscope controlling
the aux buses, when a source button is selected on the
Krystal/Kaleidoscope panel, that source button is also selected on
the switcher for that aux bus, and vice versa. So an effect running
on Krystal/Kaleidoscope can cause the switcher to select different
crosspoints. This is the mechanism used to achieve front/back
switching.
All control connections have an associated control delay. The
CONTROL DELAY in the DPM Setup Menu should be set to 6 fields
when the DPM TYPE is set to either KRYSTAL or KSCOPE.
When any other type of DPM is selected as the DPM TYPE, the Model
2200 Switcher controls the aux bus.