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About GPS Navigation
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Functional Description
MX420 Configurations
Operator's Manual
The MX420 Navigation System is available in several configurations.
Please refer to the Auxiliary Unit Information section ofthe manual to
view sample screens to identify your particular model. Described be-
low are the various MX420 configurations and their differences.
MX42012GPS
This is a basic MX420 Control and Display Unit (CDU) model with two
(2) bidirectional user 1\'MEA ports. This mode! is supplied with a MX42 I
GPS only smart antenna. The MX42 1 antenna can achieve autono-
mous GPS accuracy better than 3 meters.
MX421
Smart
GPs.~~~~
Antenna
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MX420CDU
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Basic MX420/2 and MX420/B GPS & DGPS Configuration
MX42012 DGPS
This is a basic
MX420/2
CDU supplied with a combined GPS and
Beacon smart antenna (MX421B). The MX421B DGPS unit can achieve
sub-meter accuracy in areas with good beacon differential coverage.
MX420lBGPS
This is an enhanced MX420 CDU equipped with eight (8) bidirectional
user NMEA ports. This model can be configured to output an optional
1 Pulse Per Second (PPS) timing output. It is supplied with a GPS only
smart antenna model MX421.
MX420lB DGPS
This is a basic
MX420/8
CDU supplied with a smart DGPS antenna
model MX421 B.
Version 7.5
3
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