Hello.

I'm looking to see if anybody might have a set of working commands strings for a Lexicon MC-8 AV processor, or even some assistance in converting the information in their documentation to working command strings. I'm programming an RTI system for an existing theater, and I have never worked with the Lexicon. From an old post ([Link: remotecentral.com]) that I found, the power on data string looks like this:

\xF1\x04\x14\x01\x18\xF2

To the best of my knowledge: F1 is the start bit, 04 is number of bytes following, 14 is the command (which is not a command code anywhere in the Lexicon documentation), 01 is the number of data bytes, 18 is an IR code (power on in the Lexicon doc), and F2 is the close.

Following the post with that command string, the OP said that it worked. The thread was from 2009, so the documentation may have changed since then.

The Lexicon doc is here, in case somebody wanted to take a look...
[Link: lexicon.com]

Anyone have any input on this?

Thanks in advance for any assistance!

I have a complete test system for the old Lexicon MC1. I do not believe the RS232 format has changed. The third byte (x14) indicates that what follows is an IR code. The fourth byte (x01) sayas that the data (the IR code) is 1 byte long. The fifth byte (x18) is the IR code for Power on (decimal 24).

The system is written in VB6 And if you know VB6 you could follow the code to see how it works.

I do (or I did many years ago) understand their protocol as I wrote the test program and also took the heart of the test program to build the drivers for my theater control system.

Contact me by email (see my member profile) if you want a copy of the BV system