YSI Data Scout Advanced - Manual (Page 102)

Figure A-3 shows the signal assignment for the RS-232 side of the Model 771 RS-485 to RS232 converter.
Figure A-4 shows the signal assignments for the Model 772 RS-485 to SDI-12 converter.
Figure A-3
Model 771
RS-485 to RS-232
Converter
Model 772
Figure A-4
YSI Incorporated Data Scout Advanced 98