Help: USB to RS232 - How to test?

Discussion in 'Drivers' started by louarnold, May 31, 2010.

  1. louarnold


    May 31, 2010
    Likes Received:
    How do I determine if the USB port is actually getting data to/from the system's COM port?

    Some info:
    - I have Vista Home Premium
    - I purchased a Generic USB to RS232 adapter (from China) based on a PL2303 chip.
    - The driver that came with the adapter seems to have installed properly.
    - I have RealTerm installed.
    - I jumpered Tx to Rx plus other pins on the male DB9 connector.
    - I sought help from Prolific (re PL2303), but found nothing helpful.

    But I don't know how to look for data passing through the adapter. What I type on the keyboard does not show up on the RealTerm screen.
    I've worked with RS232 for years, and know about the signal-type on the USB port.
    But now I am stumped, and about to cut the vinyl covers of the adapter.
    louarnold, May 31, 2010
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  2. louarnold


    Jan 27, 2007
    Likes Received:
    Northern Virginia, USA
    Sorry ... but we're not equipped here to do hardware troubleshooting.
    WAW8, Jun 13, 2010
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