10
2.8 Connecting the Ship Gyro (optional)
Your system is able to track the satellite without having ship gyro. Although your system can be
operate without the ship gyro, user may directly connect vessel’s ship gyro to the antenna system
when internal GPS is inoperative or to enhance the antenna’s searching capability that receiving
vessel’s heading data will accelerate the searching speed by minimizing the searching range. To
connect the ship gyro, you need to have a suitable cable and connect it to the NMEA port (see
Figure – 16) with using a 9-pin female type connector (not supplied).
NOTE:
In order to connect the ship gyro to the antenna, you will need to purchase a suitable DB-
9 female type connector.
(see Figure -15)
①
Strip back the insulation of each cable and connect a
cable to each terminal of the DB-9 connector.
②
Tighten the locking screws of the DB-9 connector.
③
Connect DB-9 connector to the NMEA port on the ACU.
④
When NMEA signal is accepted via NMEA, System will
be automatically restarted. No additional setting required.
Figure 16 – NMEA Port on the ACU
When ship gyro is connected to the ACU, the vessel’s heading data will be automatically
displayed on the LCD main screen (see Figure - 17).
Figure 17 - LCD Display with Ship Gyro
It may takes up to 5 min to calculate your location and configure the data from the GPS
satellite signal at the first power on with the gyro connected.
NOTE
: KA-78 ACU can accept the various format of NMEA, as follow: HDT, HDG, HDM.
Figure 15 – DB9 Connector
