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<DIV>Eric,</DIV>
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<DIV>I noticed on my Acroname serial biscuits (BrainStem modules) that I have a
jumper soldered from pin 7 to 8 (CTS RTS). Don't know if that has anything to do
with your problem. I think that was to satisfy Air Cable since I think on PC I
am not using handshaking. In fact, when I use hyper terminal, I tell it no hand
shaking.</DIV>
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<DIV>Are you sure what data polarity is expected on Parallax end? The BrainStem
inverts data of course having a Max232 or somesuch inverting driver/receiver
chip on it.</DIV>
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<DIV>You will need to invert it again possibly if Parallax module is expecting
RS-232 polarity on signals, but just tolerant of higher voltages and hoping your
RS-232 receiver is happy with 0 to 5 volt swings on its transmitted data.</DIV>
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<DIV>Look at the device's TX level when it is not sending. Is it high or
low?</DIV>
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<DIV>If high, then you will need inverters between Parallax and Brainstem -- if
I got that right.</DIV>
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<DIV>- Ron</DIV>
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