Datawell 45100, Руководство пользователя

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means that the signal-to-noise or interference ratio is troublesome. Push the speaker button on
the right side of the display and listen to the signal. Normally only the beat-note (characteristic
warbling sound) of the buoy signal accompanied by more or less noise should be audible. If
nothing is heard, check antenna and/or cabling.
If the beat-note is heard together with another signal the bad reception is due to interference
from other transmitters. Unfortunately things are crowded in the frequency range used by the
buoy transmitter and the spectrum must be shared with other users. It is entirely possible that
some frequencies are unusable in your vicinity due to other users. If this is the case, consider
using another buoy transmitter frequency.
5.3 Data interface
If the above suggestions check out OK, the fault must lie with the data connection to the PC.
Check the RS232 cabling. Also check if the proper serial port and serial port settings have been
selected. Other errors have to be found by checking the software. See the documentation on
W@ves21 or SeaSaw21. Occasional loss of data may be caused by some RS232-USB serial
adapters models. Select another adapter or switch to a RS232 serial (or ethernet) connection.