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Re: Verifying terminal emulation is working

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  • whd_whd_whd
    To be persnickety about item #5. It s not actually duplex (half/full). That is something of a misuse of the term. (and a very common one, almost to the point
    Message 1 of 9 , Jul 15, 2011
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      To be persnickety about item #5.

      It's not actually "duplex" (half/full). That is something of a misuse
      of the term. (and a very common one, almost to the point where it
      might even be a semi-acceptable usage (?))

      It's better / preferable to talk about it as "Local Echo" and "Remote Echo".

      Correct me if I'm wrong.

      http://en.wikipedia.org/wiki/Local_echo
      http://en.wikipedia.org/wiki/Duplex_%28telecommunications%29

      ==========

      5. Duplex is simple. Half-Duplex means a received byte will be sent to the
      terminal directly. Full-Duplex means the received byte will be sent to the
      terminal AND sent back to the sender. The best troubleshooting method is to set
      both terminals to Full-Duplex and fiddle with the settings until you type on one
      terminal and get "one" character on the other and visa-versa.
    • Dave Ruske
      You re correct. Full duplex refers to simultaneous receive and transmit, half duplex supports only one communication in only one direction at a time. Dave ...
      Message 2 of 9 , Jul 15, 2011
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        You're correct. Full duplex refers to simultaneous receive and transmit, half duplex supports only one communication in only one direction at a time.

        Dave

        On Jul 15, 2011, at 2:11 AM, "whd_whd_whd" <whd_whd_whd@...> wrote:

        > To be persnickety about item #5.
        >
        > It's not actually "duplex" (half/full). That is something of a misuse
        > of the term. (and a very common one, almost to the point where it
        > might even be a semi-acceptable usage (?))
        >
        > It's better / preferable to talk about it as "Local Echo" and "Remote Echo".
        >
        > Correct me if I'm wrong.
        >
        > http://en.wikipedia.org/wiki/Local_echo
        > http://en.wikipedia.org/wiki/Duplex_%28telecommunications%29
        >
        > ==========
        >
        > 5. Duplex is simple. Half-Duplex means a received byte will be sent to the
        > terminal directly. Full-Duplex means the received byte will be sent to the
        > terminal AND sent back to the sender. The best troubleshooting method is to set
        > both terminals to Full-Duplex and fiddle with the settings until you type on one
        > terminal and get "one" character on the other and visa-versa.
        >
        >


        [Non-text portions of this message have been removed]
      • Lee Hart
        ... That makes sense. Of course, the mode will often change. A monitor program might be designed so every character you type is always echoed back to the
        Message 3 of 9 , Jul 15, 2011
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          whd_whd_whd wrote:
          > It's not actually "duplex" (half/full)... It's better / preferable
          > to talk about it as "Local Echo" and "Remote Echo".

          That makes sense.

          Of course, the mode will often change. A monitor program might be
          designed so every character you type is always echoed back to the
          display. A game might be programed so the keys you type are *not* echoed
          back, but instead uses for some command.
          --
          Lee A. Hart | Ring the bells that still can ring
          814 8th Ave N | Forget the perfect offering
          Sartell MN 56377 | There is a crack in everything
          leeahart earthlink.net | That's how the light gets in -- Leonard Cohen
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