Test Pictures Generated By A Host Computer Linked To The Actas - Barco ACTAS 2 Owner's Manual

Splitting the test pictures
The parameters such as the Horizontal segment and
Vertical segment are used to split the test picture. When
the segments are set to be more than 1, the test picture
will be split up when it is fed to a splitter system with the
same segmentation. So that, the originally intended test
picture will be displayed on each projector of the wall.
Without the splitter, in the center of the wall a practically
full white screen would be displayed in case the "Win-
dow" picture is chosen.
Centering the test pictures
The parameters such as the Left-margin, Right-margin,
Top-margin, and Bottom-margin are used to center the
test picture correctly. This can be of interest if the test
picture is split.
When using the left-margin to shift the pictures, the shift
distance to the right reduces gradually, the same princi-
ple applies to the other margins.

Test pictures generated by a host computer linked to the ACTAS

When the host computer is connected to the ACTAS through the RS232 connection marked as "TO HOST" on the
ACTAS Interface unit, the host computer can generate the test pictures replacing the output from the generator of
the ACTAS Interface, upon request from the ACTAS Control Unit.
In this case, the requests for building up the required test pictures are directed from the ACTAS Control Unit to the
host computer instead of to the ACTAS Interface. The ACTAS Interface is the Master, the computer is the Slave.
The following commands will be used to allow communications between the ACTAS and the host computer :
u
IDENT
: to tell the host computer where the test picture has to be put and where the test picture can
u
REQ_SHAPE : for communicating the picture type, level, color and size to be generated and for switching
u
READ_SOURCE : for flicker compensation of the measurements
Please refer to Appendix B for detailed description about the serial communication protocol among the ACTAS
Control Unit, the ACTAS Interface or the host computer.
5975636 ACTAS 2 170297
be removed
the levels
Via a splitter : Horizontal segment =3; vertical segment =2
Without a splitter : Horizontal segment =3; vertical segment =2
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a
Left margin
ACTAS software
c
b
a>b>c
2-5