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Is th e DB9 Cable for the Basic Stamp Straight Trough? — Parallax Forums

Is th e DB9 Cable for the Basic Stamp Straight Trough?

ArchiverArchiver Posts: 46,084
edited 2003-08-09 18:29 in General Discussion
Is th e DB9 Cable for the Basic Stamp Straight Trough? If it is
straight trough , how can I know if it is straight trough, thank you.

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2003-08-09 18:29
    Yes it must be straight through.
    Ways to tell:
    1. Take an Ohmmeter (digital voltmeter set to ohms)
    and touch a probe to pin 2 on each end -- should
    be 0 ohms. Touch pin 3 -- 0 ohms, pin 5 (ground)
    0 ohms, and pin 4 (DTR, used for ATN/RESET) 0 ohms.

    2. Put a radio shack 8-led RS-232 gizmo on it.
    If both TX and RX led's light, you're good.

    --- In basicstamps@yahoogroups.com, "catcat" <semiconductor@p...>
    wrote:
    > Is th e DB9 Cable for the Basic Stamp Straight Trough? If it is
    > straight trough , how can I know if it is straight trough, thank
    you.
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