BS11Troubleshooting » History » Revision 13
Revision 12 (dexter, 02/19/2016 10:47 PM) → Revision 13/23 (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 8 Volts). This may be an explaination why the BS11 does not like the normal (+/-12V) levels. [[Image(Lmt_bts-rx.jpg, 15%)]] [[Image(Lmt_bts-tx.jpg, 15%)]] [[Image(Lmt_btx_tx_does_not_work.jpg, 15%)]] From left to right: BTS-RX (PC-TX), BTS-TX (PC-RX), BTS-RX (PC-TX) with a real RS232 port.
