NASA YACHT REPEATER Installation And User Instructions Manual - Connecting The Nmea Inputs
Connect the display cable and the power cable to the data control box as shown
in Fig-2.
CONNECTING THE NMEA INPUTS
.
The data control box has six NMEA-0183 inputs. Four are single wire inputs which
are referenced to ground (supply negative). Two are two wire inputs and have
separate reference inputs which can be connected to ground if desired.
For NMEA enabled instruments with a single output (i.e. With no reference output)
then connect a single wire from the NMEA OUTPUT to any of the four NMEA
inputs of the data box. If the instrument has an NMEA OUTPUT + and an NMEA
OUTPUT-(ref) then use two wires to connect the outputs to the corresponding two
wire input of the data control box. A typical setup is shown in Fig-3. (note, one of
the two wire inputs is shown with its reference connected to ground, converting it
into a single wire input.)
FIG 2
3