Protocols, Gv ten-xl ascii protocol, Protocols 101 – Ensemble Designs BrightEye NXT 410 Clean HDMI Router User Manual
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BrightEye NXT 410/415/430 Compact Router Installation, Configuration and Operations Guide
Protocols
The BrightEye NXT Router supports multiple protocols to allow crosspoint switching from external
controllers.
The supported protocols are these:
•
GV TEN-XL ASCII Protocol
•
GV Performer ASCII Protocol
•
Generic ASCII Protocol
For installations that already support one of these protocols, choosing the same protocol can minimize
programming changes to the automation system when installing the BrightEye NXT Router.
These protocols are presented in the subsections below.
GV TEN-XL ASCII Protocol
The Grass Valley TEN-XL ASCII Protocol is a serial protocol used by TEN-XL Routing Switchers. For
installations that already support this protocol, this is a good choice to minimize programming
changes to the automation system.
The implementation of this protocol has been adapted as appropriate to reflect the features in the
BrightEye NXT Router.
Protocol Requirements
•
Sources and destinations are numbered starting at 0.
•
All commands begin with the ASCII STX character (02H).
•
Receipt of STX in the middle of a command discards all collected bytes and begins a new
command.
•
Errors of any kind (e.g., missing parameters, unexpected characters, out of range values, etc.)
result in discarding the current command.
•
Parsing will not tolerate any additional characters within a command. For example, spaces
embedded within a command will cause the command to be discarded.
•
Audio crosspoints are ignored on switching requests. In the Command Response message, the
audio source is always reported as ‘0’ (30H).
•
The Power Supply status returned in the Command Response message is always reported as ‘3’
(33H), which means okay.
•
The protocol requires 2 digits to specify a destination. This 2-digit number represents a
decimal number. For example, a destination that is specified with a high digit of ‘1’ and a low
digit of ‘2’ represents the decimal number 12.