MX575A/B DGPS Compass
37
4.1 Configuring the MX575 as a GPS Satellite Compass
Before beginning on this section, make sure the MX575 D/GPS Satellite Compass
is connected to the MX420CDU as shown in Figure 33 to 35. In this manual, we
used NMEA 2 I/O (or Port 2). It can also be any available port other than Port 3.
Go to the
CFG 1
screen in the MX420 CDU, and on the left column, scroll down to
Compass
.
1. To implement this feature, change
Compass connected
to
Yes
.
2. Using the
Change
softkey, change
Data
input port no
to
2
(or any available
Data
input port
other than port 3).
3. Change
Compass type
to
MX575,
and change
Heading offset
(if any)
to an
offset/bias value corresponding to your MX575.
4. Press the
E
key to exit, you should be able to see the heading value under
Input
and
Used value
. Your setting should look similar to Figure 37 in the
following page.
Go to the
CFG 1
screen in the MX420 CDU, and on the left column, scroll down to
ROT.
1. To implement this feature, change
ROT connected
to
Yes
.
2. Using the
Change
softkey, change
Data input port no
to
2
(or any available
Data input port
for MX420/8 or MX420/AIS CDU)
.
3. Change
Use MX575 ROT
to
No
.
4. In this menu, the option called
ROT filter time
is available to control the filter
time for averaging the rate of turn display. It also helps to smooth the
measurement on the NMEA output, a particularly useful tool for slow moving
vessels and vehicles. The default filter setting is 2 seconds.
5. After setting all the options, press the
E
key to exit. You should see the
Rate of Turn value under
Input
and
Used values
. Your setting should look
similar to Figure 38 in the following page.
In your MX420 CDU, go to the
NAV 5
(Figure 40) and
NAV 6
(Figure 41) screens
to see the Heading and Rate of Turn display.
