Calrec SUMMA User Manual page 189

C
Configuration PC
The configuration PC is a Windows based 1U computer external to the surface, normally mounted within the same rack
as the Summa Core. This PC provides access to Shows and Memories backup, GPIO and H2O.
Continuous Memory
A continually updated memory that stores the state of the system. In the event of a restart after power loss or reset, the
system can reload the continuous memory and continue from almost the same state prior to power loss.
Control Cell
A collection of controls consisting of a display, a button and a rotary control.
Control Modes
The surface can be put in to one of several control modes. Access mode provides dynamics and EQ controls for the
currently accessed path across the surface control cells. There are also several 'strip' control modes which place controls
for each path within the two control cells above the associated fader.
Control Processor Module
The control processor module acts as the main controller of the Summa system, passing messages between all modules.
The surface communicates with the rack via the control processor module.
Core
Processing rack for a mixing console.
CSCP (Calrec Serial Control Protocol)
CSCP allows for remote control over mixing console operational functions by 3rd party systems such as video switchers
and production automation systems.
D
DAC (Digital to Analogue Conversion)
The reverse of ADC. The digital representation of a signal is converted back into a continuous analogue signal.
Direct Output
Output from a channel or group path with level control and pre EQ / pre fader / post fader selection.
Downmix
The process of converting a signal of a given width into a signal of a smaller width allowing fixed or variable amounts of
each of the contributing legs to be included. For example, a downmix must be applied to a 5.1 surround signal for it to be
correctly translated into a stereo format.
Without a downmix, surround, LFE or centre information may be lost and levels may become unbalanced.
DSP
Digital Signal Processing. Discrete mathematical operations applied to a stream of digital audio signals.
DSP Module
A module fitted in the Summa core which performs all the DSP functions of the system.
CALREC 189
Putting Sound in the Picture