Furuno CSH-53, Installation Manual

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5.2 Connections for ES Picture and FNZ Markers
To provide echo sounder picture and FNZ markers, connect echo sounder to J203 and net sonde
to J202. The signals applied to J202 and J203 are
J202: Net sonde signal and trigger signal (keying pulse of echo sounder). A white line
signal from an echo sounder may be additionally applied as described on page 4-5 if
the digital depth data is not available on J204.
J203: Echo signal and keying pulse from an echo sounder.
Connection 1: Displaying echo sounder picture
Figure 5-2 Connections for displaying ES picture
Connection 2: Displaying echo sounder picture and FNZ marker
by one echo sounder
This method is used when the net sonde is installed and both echo sounder and net sonde
signals are taken from the same echo sounder. The net sonde signal is applied to both J202 and
J203.
Figure 5-3 Connections for echo sounder picture and FNZ marker by one echo sounder