YSI Level Scout - Manual (Page 7)

„ While applying slight pressure, push the two parts together and slowly rotate the transducer assembly until the keys
align. When the keys align, the housing will slip into the retaining nut assembly an additional one inch and the
transducer will no longer rotate while the user is holding the cable.
„ Now that the keys are aligned and seated, grasp the transducer in one hand and the retaining nut in the other. While
applying slight pressure, push the two parts together and screw the retaining nut onto the transducer housing. Continue
threading the parts together until they are fully mated, leaving no visible gap where the retaining nut meets the transducer
housing.
2.2.2 PC - SERIAL COMMUNICATIONS CONNECTION
The field cable incorporates an innovative vent filter that provides lifetime moisture protection for vented Level Scouts. A GORE-
TEX®-like plug prevents water droplets from entering the filter while allowing air to pass freely to the internal silica gel desiccant.
The 316 SS housed filter also provides surge protection and utilizes a compact electrical connector.
There are two options for the communication cable, the 778 or the 779 adapters.
The 778 adapter provides connection from the field cable to a modem, PDA, or computer, and includes built-in conversion to RS-
232C and USB as well as a DC input connector. When using the 778, you will be prompted to install drivers from the Information
and Support CD that was included with your Level Scout.
For SDI-12 output, use the 778 or 779 with a 772 adapter. Additional, the 779 incorporates a DC input connector and requires
additional converters for RS-232C (model 771) or USB (model 771 and 773) communication.
See figure 2.3 for a diagram of all the communication adapter options.
If using a universal cable assembly, figure 2.4, the RS-485 communications interface to the Level Scout is terminated in a 9-pin male
D-shell connector. This connector is intended to work directly with the Level Scout communication adapters 771 (RS-232), 772
(SDI-12), and 773 (USB).
If using a 771 RS-485 to RS-232 adapter, ensure the RS-485 end of the adapter is pointed toward the transducer and the RS-232
labeled end is connected to your PC or USB adapter.
Note: See Appendix A for wiring information of the discontinued, universal
cable 9-pin D-shell and for connection information for model 772 RS-485 to
SDI-12 converter.
YSI Incorporated Level Scout 5