BS11Troubleshooting » History » Revision 7
Revision 6 (dexter, 02/19/2016 10:47 PM) → Revision 7/23 (dexter, 02/19/2016 10:47 PM)
= Troubleshooting = == Known problems with the LMT connection == {{{ Problem: 'bs11_config' can't get a connection to the BS-11 (no 'LMT LOGON: ACK') Solution: The BS-11 is a little bit choosy about the RS232 levels, I discovered some problems with my Dell PC (could receive anything, but no tx). Just switch to an el-cheapo USB to Serial adapter, this should solve the problem. Some background notes: We measured the RS232 levels and we found out that the level of our RS232<==>USB Adaptor is much lower (about +/-6 Volts) than normaly expected (+/-12V). The BS11 transmits at a semeliar level (about 8 Volts). This may be an explaination why the BS11 does not like the normal (+/-12V) levels. See attached files (Lmt_*) for oscilloscope screenshots. Maybe a simple voltage-devider at TX on the PC side will also solve the problem... }}}