If you sent the string out_sp_00<cr>, then the data stream was 10 bytes long, one byte per ASCII character, of which the <cr> character is the last. This corresponds to 80 bits. At a baud rate of 4800, this should take 80/4800 = 17 ms. Since your timeout value was set to something larger than 1 second, data stream length cannot be the cause of the timeout. It might have something to do with some other aspect of the port configuration, perhaps the baud rate, the data bits, or the handshaking.
- Error -1073807246 when trying to control a circulator in Labv... hung
