THOMSON DD10, Руководство по установке

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9. Port Protocols GVG-200 Emulation Diamond digital
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9. PORT PROTOCOLS GVG-200 EMULATION
The Diamond digital switcher can be controlled by an editing system via the RS-422
interfaces of the switcher electronics (E-box).
Control is made by means of the GVG-200 protocol which can be emulated by the
Diamond digital switcher.
The following description explains how the Diamond digital switcher interprets
commands from an editing system.
For connecting an editing system, one of the three RS-422 interfaces of the E-box
has to be switched to GVG-200 emulation. See the operation manual of the Dia-
mond digital switcher, section CONFIG E-BOX MENU.
In order to make all Diamond inputs available under the GVG-200 emulation which
allows only input numbers from 1 to 20, the edit interface uses the assignment of
the input keys of that panel which possesses the edit port exclusively. It is abso-
lutely necessary that the allocation of the port is exclusive to that panel from which
the assignment shall be taken, because different panels can have different key as-
signments and of course the edit interface can use only one of them.
If the MATRIX TVS protocol is used on another port of the Diamond digital switcher
electronics, the panel has to own this port exclusively too. Please note that an edit
decision list will result in different edits if the assignment of inputs, used in that list,
has been changed.
The reactions of a GVG-200 on commands in the following tables are taken from
the description ”MODEL 200 EDITOR PROTOCOL AND DIALECT” from GVG. In
the following, ”EX” always refers to the ME address byte, that is the second byte
of any command/message block.
The reader is assumed to be familiar with both the GVG-100/300 protocol and the
GVG-200 dialect. The hex-numbers behind the command names are the com-
mand codes for the write version of these commands. The read version should al-
ways report the real state of the switcher unless noted otherwise in the text.
Note:
The function Transfer E-MEM of the GVG-200 protocol is not assisted.
9.1 CROSSPOINT BUS COMMAND (C1 - C4)
The crosspoint numbers from 1 to 20 select the inputs and internal signals (e.g.
color background 2) which are assigned to the buttons 1 - 20 on the panel.
Crosspoint numbers
21 the crosspoint number selects ME1 reentry crosspoint on ME2, PP, and
auxiliary buses;
22 - 25 selects Fill 1 - 4 on ME1, ME2;
22 selects ME2 on PP.
For edit systems that accept all numbers within the range of a byte value, there is
the possibility to address all inputs and internal signal sources independent of the
current key assignment. To address physical inputs, 0x40 has to be added to the
input, respectively to the signal number. Inputs are numbered 0x00–0x1F, 0x20 is
black, 0x22 is ME1 and so on. The complete list is contained in the Diamond digital
Command Set.