If I remember the RS-232 spec correctly, the input range goes from +/- 3V (min) to +/- 12V (max). The level comparator in the typical RS-232 receiver is running at about 1 or 1.5 V, so you can get away with quite alot. The drives/receivers are inverters, so you might check to see if your signal is inverted as some people use the non-inverted RS-232 signal for communicating on-board.
--- David Masten <[EMAIL PROTECTED]> wrote: > Well, I wrote the flight control code. I have no > idea if it works. > > We went to test it, but it didn't initialize the IMU > correctly. So I > went back to the imutest code and tried that. Works > great from my laptop > and the build server, but not from the PC/104. We > checked everything we > could think of, even brought out the O-scope to look > at what was being > sent to the IMU. The only difference between serial > signals from my > laptop and the PC/104 is the PC/104 is running +/-9V > the laptop +/-5V. > The build server runs +/-12V. Unfortunately we > didn't have a breakout > box to see both sides of the serial at the same > time. > > Dave > -- > David Masten <[EMAIL PROTECTED]> > _______________________________________________ > ERPS-list mailing list > [EMAIL PROTECTED] > http://lists.erps.org/mailman/listinfo/erps-list > _______________________________________________ ERPS-list mailing list [EMAIL PROTECTED] http://lists.erps.org/mailman/listinfo/erps-list
