Dynon Avionics SkyView Classic - WAAS Data Reception

SV-GPS-250/2020 GPS Receiver Installation and Configuration
8-2 SkyView System Installation Guide - Revision AA
separate “electronics module” requiring a coaxial cable connection. The four 22 AWG wires
provide power and ground, data to, and data from the unit. The SV-GPS-250 and SV-GPS-2020
are powered by the SkyView display(s) and thus if the SkyView display(s) are equipped with the
SV-BAT-320 Backup Battery, the SV-GPS-250 and/or the SV-GPS-2020 can continue to provide
GPS data in the event of a failure of the plane’s electrical system.
 If you are a US pilot and equipping your aircraft for the FAA 2020 ADS-B
Out mandate, and plan to equip your aircraft with a secondary GPS (see
below), the secondary GPS can be either an SV-GPS-250 (including an
existing SV-GPS-250) or a second SV-GPS-2020. There is no restriction on
equipping a SkyView system with a second SV-GPS-2020. (A secondary GPS
position source is not supported in SkyView SE).
Unit
Meets FAA
2020 ADS-B
Out
mandate?
(14 CFR §
91.227)
Data
Rate
SkyView
Display
Refresh
Rate
Receives
WAAS
(where
available)?
Intended
Use
For
SkyView
SV-GPS-250
No
38,400
baud
5 Hz
Yes
Secondary
GPS receiver
SV-GPS-2020
Yes
115,200
baud
4 Hz
Yes
Primary
GPS Receiver
Table 68 – Quick Comparison Chart SV-GPS-250 vs SV-GPS-2020
WAAS Data Reception
Like most modern GPS receivers, the SV-GPS-250 and SV-GPS-2020 include the ability to receive
satellite-based Wide Area Augmentation System (WAAS) correction data (when available) to
improve positional accuracy. Many pilots confuse a GPS unit that receives WAAS data with a
GPS Navigator unit that is certified for flight in Instrument Flight Rules (IFR) conditions. To be
clear, the SV-GPS-250 and SV-GPS-2020, connected to a SkyView system, do receive WAAS data
(when available), but having an SV-GPS-250 and/or SV-GPS-2020 (but not an IFR or “certified”
GPS) does not mean that your aircraft is properly equipped for legal flight under IFR.