• COMPASS / Beidou-2 — Chinese Regional
Navigation Satellite System (Beidou) is currently
being expanded for global coverage (COMPASS
or Beidou-2) by 2020.
Satellite based augmentation systems
(SBAS)
Satellite based augmentation systems (SBAS) are
systems that are used to compliment existing GNSS
by providing differential corrections that improve a
GNSS’s attributes such as accuracy, availability and
reliability.
The image below shows SBAS regional coverage.
• WAAS — Wide Area Augmentation System
(Operated by the Federal Aviation Authority (FAA)
in the USA.)
• EGNOS — European Geostationary Navigation
Overlay Service (Operated by the European
Space Agency.)
• GAGAN — GPS Aided Geo Augmented
Navigation (Operated by India.)
• MSAS — Multi-functional Satellite Augmentation
System (Operated by Japan’s Ministry of Land,
Infrastructure and Transport and Japan Civil
Aviation Bureau (JCAB)
• QZSS — Quasi-Zenith Satellite System (Proposed
by Japan)
Raymarine GPS / GNSS receiver
compatibility
Raymarine GPS receivers and GNSS
(GPS/GLONASS) receivers are compatible
with the following GNSS and SBAS.
Status /
Type Name Compatible receivers
Oper-
ational
GNSS
GPS
All internal and external Raymarine
GPS receivers and GNSS receivers
Oper-
ational
GNSS
GLON-
ASS
eS Series and a9x, a12x internal
GNSS receiver
Planned
GNSS
COM-
PASS /
Beidou–2
* eS Series and a9x, a12x internal
GNSS receiver
Planned
GNSS
Galileo * eS Series and a9x, a12x internal
GNSS receiver
Status /
Type Name Compatible receivers
Oper-
ational
SBAS
WAAS
All internal and external Raymarine
GPS receivers and GNSS receivers
Oper-
ational
SBAS
EGNOS
All internal and external Raymarine
GPS receivers and GNSS receivers
Oper-
ational
SBAS
MSAS
All internal and external Raymarine
GPS receivers and GNSS receivers
Oper-
ational
SBAS
GAGAN
All internal and external Raymarine
GPS receivers and GNSS receivers
Planned
SBAS
QZSS * eS Series and a9x, a12x internal
GNSS receiver
Note: * Not currently operational but will be
supported via software update in the future.
GPS selection
You can use an internal (if available) or external GPS
receiver or GNSS receiver.
• Your multifunction display may feature an internal
GPS or GNSS receiver.
• You can also connect an external receiver using
SeaTalk
ng
or NMEA 0183.
• Where appropriate use the System Settings menu
to enable or disable the internal receiver.
Enabling or disabling the internal
receiver
If your multifunction display features an internal GPS
receiver or GNSS receiver then this can be enabled
and disabled by following the steps below.
With the Homescreen displayed:
1. Select Set-Up.
2. Select System Settings.
3. To enable the internal receiver, select Internal
GPS so that On is highlighted.
4. To disable the internal receiver, select Internal
GPS so that Off is highlighted.
Enabling and disabling differential
satellites
You can choose wether or not your receiver uses
differential data provided by SBAS constellations.
From the GPS Set-up menu: Homescreen > Set-up
> System Settings > GPS Set-up:
1. Select Differential GPS.
Selecting Differential GPS will switch differential
satellite (SBAS) reception On (default) and Off.
Getting started
51
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