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Thread: midi and SFX, G-Type, Showman

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  1. #1
    I've not had a chance to try this as I'm away from my test setup, but this is what Stage Research had to say about what is happening when they send a MSC command to Catalyst.

    I had originally stated the following...

    "Showman is exporting this hex string for a GO command on cue 1.5 on Channel 8 - F0 7F 08 02 40 01 31 2E 35 F7. Cue 1.5 is triggered just fine in Catalyst. SFX is exporting this hex string for the same command - F0 7F 08 02 40 01 31 2E 35 00 00 F7. Catalyst does nothing but receives the command and displays "1.5::" in the MSC Last GO window. What are those extra four zeros and how do I get rid of them?"

    Their response is...

    "Those zeros delimit the cue list and the cue path. According to the MSC
    spec, the sending device can optionally omit them (like ShowMan is doing)
    but the spec says:

    Controlled Devices should be able to accept more than one set of delimiter
    bytes, including directly before F7H, and even if no Q_number, Q_list or
    Q_path data are sent.

    It goes on to say:

    Controlled Devices which do not support Q_list (or Q_path) data must detect
    the 00H byte immediately after the Q_number (or Q_list) data and then
    discard all data until F7H is detected.

    That means that it's Catalyst that isn't working properly because it should
    be handling those zeros.

    The first thing I would try is to put in 1 for the cue list and 1 for the
    cue path and see if Catalyst will read that and probably ignore it. I'm
    thinking that Catalyst is freaking out because it's finding two delimiters
    next to each other (again, which it's supposed to be able to handle)."

    Again, I have not been able to try this yet, but do they have a point about Catalyst not handling the MSC command as per the MSC spec? I will give it a go and post results as soon as I have them.

    Richard - Show is at Birmingham Rep. Loading in on Monday, tech starting Tuesday afternoon. Will be at PLASA tomorrow, and in London doing another show the following week with DMX triggers (something I am much more familiar and comfortable with).

    Thanks for your help,

    Kevin
    Kevin Carson
    Lighting & Video Technician
    Royal Shakespeare Company

  2. #2
    Quote Originally Posted by kmclights View Post
    "Showman is exporting this hex string for a GO command on cue 1.5 on Channel 8 - F0 7F 08 02 40 01 31 2E 35 F7. Cue 1.5 is triggered just fine in Catalyst. SFX is exporting this hex string for the same command - F0 7F 08 02 40 01 31 2E 35 00 00 F7. Catalyst does nothing but receives the command and displays "1.5::" in the MSC Last GO window. What are those extra four zeros and how do I get rid of them?"
    Kevin
    kevin

    you dont have to get rid of them-
    just type this on the show cue - you want to trigger exactly how you see it received from the controlling device.

    so type '1.5::' as the show cue number.

    every single device i have ever seen has handled these things differently - and i try to preserve as much information about what the device is sending - so you can do different things if need.
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  3. #3
    Quote Originally Posted by samsc View Post
    you dont have to get rid of them-
    just type this on the show cue - you want to trigger exactly how you see it received from the controlling device.

    so type '1.5::' as the show cue number.

    every single device i have ever seen has handled these things differently - and i try to preserve as much information about what the device is sending - so you can do different things if need.
    Thanks Richard. All working fine now. Even works with multiple cue lists.

    Although not a problem for me right now, how does MSC Input 1 Trigger work? It says Preset in the Link Go To Cue List window, but is not editable to pick a cue list? I'm guessing that it is some way to trigger a preset directly, but then should it not say "Link Preset"?

    Thank you again,

    Kevin
    Kevin Carson
    Lighting & Video Technician
    Royal Shakespeare Company

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