Blackmagic Design Design 3G-SDI Arduino Shield Installations- Und Betriebs-Anleitung Seite 19

Data (void)
The category, parameter, data type and operation type partition a 24 bit operation space.
Group ID Parameter
Lens 0
.0 Focus
Instantaneous
.1
autofocus
.2 Aperture (f-stop)
Aperture
.3
(normalised)
.4 Aperture (ordinal)
Instantaneous
.5
auto aperture
Optical image
.6
stabilisation
Set absolute
.7
zoom (mm)
Set absolute
.8
zoom (normalised)
0: assign value
The supplied values are assigned to the specified parameter. Each element
will be clamped according to its valid range.
A void parameter may only be "assigned" an empty list of boolean type.
This operation will trigger the action associated with that parameter.
A boolean value may be assigned the value zero for false, and any other
value for true.
1: offset / toggle value
Each value specifies signed offsets of the same type to be added to the
current parameter values.The resulting parameter value will be clamped
according to their valid range.
It is not valid to apply an offset to a void value.
Applying any offset other than zero to a boolean value will invert that value.
Operation types 2 through 127 are reserved.
Operation types 128 through 255 are available for device specific purposes.
The data field is 0 or more bytes as determined by the data type and
number of elements.
Type
fixed16
void
fixed16
fixed16
int16
void
boolean
int16
fixed16
Index Min Max
– 0.0 1.0
– – –
– -1.0 16.0
– 0.0 1.0
– 0 n
– – –
– – –
– 0 max
– 0.0 1.0
Studio Camera Control Protocol
Interpretation
0.0=near, 1.0=far
trigger instantaneous
autofocus
Aperture Value
(where fnumber =
sqrt(2^AV))
0.0=smallest, 1.0=largest
Steps through available
aperture values from
minimum (0) to
maximum (n)
trigger instantaneous
auto aperture
true=enabled,
false=disabled
Move to specified focal
length in mm, from
minimum (0) to
maximum (max)
Move to specified
normalised focal length:
0.0=wide, 1.0=tele
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