Results 1 to 4 of 4

Thread: Missed RS232

  1. #1

    Missed RS232

    Hi,

    I have a v4 main and backup system programmed on presets, triggered by MSC. Currently both main and backup are outputting identical serial to the projectors at the same time. Once possibly twice I have had a missed shutter open cue on one of the units. I have heard this could be because of the dual serial output.

    Any thoughts? Ideally would turn serial on and off as part of the main/backup switch.

    T

  2. #2
    rs232 is susceptible to any kindof electrical or ground interference in any system-

    absolutely not recommended to use rs232 for more than a few feet. unless you have boxes which are able to transmit the signal over long distances using a differential or balanaced signal

    Quote Originally Posted by Trench117 View Post
    Hi,

    I have a v4 main and backup system programmed on presets, triggered by MSC. Currently both main and backup are outputting identical serial to the projectors at the same time. Once possibly twice I have had a missed shutter open cue on one of the units. I have heard this could be because of the dual serial output.

    Any thoughts? Ideally would turn serial on and off as part of the main/backup switch.

    T

  3. #3
    Join Date
    Oct 2004
    Location
    UK - Milton Keynes
    Posts
    807
    Quote Originally Posted by Trench117 View Post
    Hi,

    I have a v4 main and backup system programmed on presets, triggered by MSC. Currently both main and backup are outputting identical serial to the projectors at the same time. Once possibly twice I have had a missed shutter open cue on one of the units. I have heard this could be because of the dual serial output.

    Any thoughts? Ideally would turn serial on and off as part of the main/backup switch.

    T
    How are you transmitting the RS232?
    If over TCPIP, does the Serial server allow multiple client connections?
    Is the serial command specifically OPEN with a separate command for CLOSE?
    (some projectors use the same command to open and close - so you could see what might happen if you are sending 2 commands…)

    (assuming TCPIP serial server)
    Personally - I would only use ONE Mac at a time to send the command…

    Probably test to see what happens if you send 2 commands at exactly the same time.
    Are they ignored? received sequentially?
    Only way of knowing is to test…

    S
    Simon Pugsley

    SNP Productions Ltd. (UK)
    Lighting & Video Control Solutions
    Catalyst|Sales|Hire|Training|Support
    Catalyst Dealer UK Europe & Worldwide...

    Office: +44 (0)1908 410129
    Mobile: +44 (0)7958 390034
    simon@snp-productions.co.uk
    www.snp-productions.co.uk

  4. #4
    It was transmitted using a netcom server into a Voyager Fibre TX/RX. It was specific open and close command for panasonic projectors.

    I did a test with only one mac outputting for a show and still had a missed command. For the sake of the show I switched to HTTP commands which has resolved the issue. I can only imagine at this stage it was something to do with the serial on the PJ end or the voyagers. I swapped all the other serial cable and the port of the serial server.

    D

    **I should also mention it was always the same projector!!**

Similar Threads

  1. RS232 Commands out of a System without Dongle
    By bright in forum Catalyst Technology questions
    Replies: 2
    Last Post: 08-11-2012, 05:10 PM
  2. Gefen DVI 8x8 Matrix will RS232 work?
    By buchie in forum Catalyst Technology questions
    Replies: 5
    Last Post: 12-08-2008, 08:43 AM
  3. Rs232
    By Mr_P in forum Catalyst Software
    Replies: 11
    Last Post: 20-05-2006, 08:53 AM
  4. kramer ethernet to rs232 rs485 convertor
    By samsc in forum Technology questions
    Replies: 0
    Last Post: 01-08-2005, 04:52 PM
  5. jvc video deck with rs232 control
    By samsc in forum Technology questions
    Replies: 0
    Last Post: 31-05-2005, 01:55 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •