VP-773A - The VP-773A RS-232 Communication Protocol
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13
The VP-773A RS-232 Communication
Protocol
The Kramer Protocol lets you control the
VP-773A
from any standard terminal
software (for example, the Windows
®
HyperTerminal Application).
13.1
Using the Communication Protocol
There are three different methods to control the
VP-773A
RS-232 or the Ethernet:
Protocol commands (via protocol 3000 or Legacy Protocol) mimicking the
OSD, see
Section
13.2
The button functions mimicking the remote controller buttons (as well as the
front panel buttons), see
Section
13.3
Protocol 3000 common commands, see
Section
13.4
All three tables together include all the protocol commands, but they are
not identical and do not always include the same information. Some of
the data may appear in one or two of the tables but not in the third table
and vice versa.
Commands that are specific for the Web pages, appear in the relevant
Web page section, see the Audio Settings protocol commands in
Section
9.6.3
.
The protocol 3000 communications protocol uses a data rate of 115200 baud, with
no parity, 8 data bits, and 1 stop bit.
The Legacy communication protocol uses a data rate of 9600 baud, with no parity,
8 data bits and 1 stop bit. CTS mode and XON/XOFF are set to Off.
Note that if the Protocol is set to Legacy (via the Miscellaneous menu,
see
Section
6.8
), some PC applications (for example, K-Upload), as well
as the Web pages may not function properly.
13.2
Communication Protocol: Mimicking OSD
The audio/video protocol commands defines all the function numbers, their valid
parameters can be used with protocol 3000 or the Legacy protocol.