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dexter, 02/19/2016 10:47 PM
= Troubleshooting =
Known problems with the LMT connectionProblem:
'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.
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.
Updated by dexter over 8 years ago · 13 revisions