First Startup Configuration - Simrad RS20S User Manual

breaker (comes with inline 8 amp fuse ready fitted)
3.
6 wires to be connected as follows:
1. External speaker + (gray): connect to 4 Ohm, 4 Watt (minimum)
external speaker positive
2. External speaker - (gray/black): connect to 4 Ohm, 4 Watt
(minimum) external speaker negative
3. NMEA 0183 RX_A (yellow): connect to TX_A of chart plotter, or
active GPS antenna
4. NMEA 0183 RX_B (green): connect to TX_B of chart plotter, or
active GPS antenna
5. NMEA 0183 TX_A (white): connect to RX_A of chart plotter
6. NMEA 0183 TX_B (brown): connect to RX_B of chart plotter
4.
Antenna: connect to a marine VHF antenna using 50 ohm cable
fitted with a PL-259 connector
5.
GND: optional ground connection. May help with induced noise
issues.
6.
Optional External GPS Antenna connection (SMA)
7.
NMEA 2000 network connection. Can be connected to a NMEA
2000 compatible MFD with built in GPS or external GPS antenna.
¼ Note:
External speaker and plotter connections are optional.

First startup configuration

The first time the radio is powered up, the user is prompted to make
a series of setting selections in order to allow the radio to perform
to its full potential. Some steps must be completed; some are
optional and can be completed later. The steps are outlined below
for reference:
Select the region and country the radio will be operated in.
Installation | RS20S User Guide