NMEA port setup, GPS WAAS setup

The NMEA port can function as an input port or input/output port.

If you are using the GP-320B, turn on the GPS WAAS feature.

1.Show the Installation menu and then press ▼ to choose NMEA PORT.

2.Press ► to display the NMEA port options window.

3.Press ▲ or ▼ to choose IN/OUT or IN/IN as appropriate.

IN/OUT: Input and Output (default setting). For GP-320B choose this setting.

IN/IN: Input only (Available with connection of multiple navigators.)

4.If you selected IN/OUT at step 3, press ◄, ▼ to choose NMEA OUTPUT, and then press ► to display the NMEA OUTPUT options window.

5.Press ▲ or ▼ to choose OFF or ON. Choose ON to output input data. Choose OFF to not output data or if the GP-310B or GP-320B is connected.

6.Press ◄ to close the window.

7.If the GP-320B is connected, press ▼ to choose GPS WAAS. Otherwise, go to step 10.

8.Press ► to open the window.

9.Press ▲ to choose message type.

Note: WAAS is currently in the developmental stage. While in the developmental stage choose message type 02. Change to message type 00 when WAAS becomes fully operational.

10.Turn off the power.

3.5 Magnetron Heater Voltage

Note: This confirmation/adjustment should only be performed by a qualified service technician.

Magnetron heater voltage is formed at the MD Board of the antenna unit and preadjusted at the factory. Therefore, no

3. INSTALLATION

adjustment is required. However, verify heater voltage as below.

WARNING

ELECTRICAL SHOCK HAZARD

Do not open the equipment.

DO NOT attempt the procedure below unless totally familiar with electrical circuits.

1.Open the antenna cover and remove the shield plate.

MD board (under shield plate)

Antenna unit, inside view

2.Turn on the power. DO NOT transmit.

3.Connect a multimeter, set to 10 VDC range, between #6 (+) and #4 (-) of test point TP804.

TP804

VR801

MD board

4.Confirm that the multimeter shows 8.0 V ±0.1 V. If it does not, adjust potentiometer VR801 on the MD Board.

5.Turn off the power.

6.Refasten the shield plate.

7.Close the antenna cover.

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Furuno 1623 manual Magnetron Heater Voltage, Nmea port setup, GPS Waas setup, Antenna unit, inside view, MD board