On Tue, 2004-07-27 at 13:11, Henry Spencer wrote: > Dave, could it be that what you've got on the IMU is *not* an RS-232 port, > but an RS-422 port? Such mismatches can cause very strange behavior.
RS-232. > Similarly, check continuity of the ground wire in the cable. A broken > ground can do bizarre things. Checked. > Thirdly -- apologies if you're already answered this, I didn't save all of > the earlier mail -- could this be DCE-vs-DTE confusion? (That is, do you > need to add [or subtract] a null modem?) Only if the PC/104 is DCE instead of DTE. But that would not make sense since a null modem cable between my laptop and the PC/104 works fine. But all this discussion just got me to think of something that has not been checked - is the PC/104 computer getting anything off the Rx line from that serial port? I'll chaeck that out tonight. In the meantime keep suggesting possible problems, just in case.. Thanks, Dave -- David Masten <[EMAIL PROTECTED]>
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