Re: Gizmo hardware problems

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]>

_______________________________________________
ERPS-list mailing list
[email protected]
http://lists.erps.org/mailman/listinfo/erps-list

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.2-rc1-SuSE (GNU/Linux)

iD8DBQBBBr+zN5LftM3GB+MRAgsZAKC5f0gCYt1NNVNLV7N1jtEGFWoxugCfRUxm
CyLo3XJWQhfQXxYdrKkzs1Q=
=WuyR
-----END PGP SIGNATURE-----