Dynon Avionics D100 Series to SkyView Conversion Guide - Manual (Page 10)

D10 and D100 Series Conversion To SkyView Guide – Rev D Page 10

The SV-GPS-250 transmits position updates 5x/second (5 Hz), so the airplane movement is
displayed smoothly on SkyView’s high resolution terrain and map pages. Most other GPS
units only output data 1x/second.

At $200, the SV-GPS-250 is a relative bargain; inexpensive enough to have multiple units
installed (especially feasible if multiple SkyView displays are installed).

The SV-GPS-250 is an integrated antenna and receiver – no difficult routing and termination
of coaxial cable, only four 22 AWG wires.

The SV-GPS-250 is easily connected to a (or multiple) SkyView display(s). A serial port and
dedicated power and ground wires / pins for the SV-GPS-250 are provided on SkyView
displays. Power for the SV-GPS-250 is provided by SkyView display(s) so the SV-BAT-320
backup battery also provides backup power to the GPS-250.

Because SV-GPS-250 is (optimally) mounted on the fuselage, it provides maximum
“visibility” to available GPS satellites.

The SV-GPS-250 receives WAAS transmissions
7
and transmits industry-standard NMEA
sentences.

If only one SV-GPS-250 is installed, it’s recommended (and well-supported) to connect a
single SV-GPS-250 to multiple SkyView displays in parallel for failover redundancy.
SkyView battery backup
Each SkyView display supports an (external) backup battery – SV-BAT-320. Although the SV-
BAT-320 is optional, it is highly recommended. By providing backup power to a SkyView display,
power is also being supplied to the SkyView network. Devices that draw power directly from
the SkyView Network such as the SV-ADAHRS-200/201 and SV-EMS-220 are thus also “battery
backed”. Because the SV-GPS-250 has its own dedicated power connection on a SkyView
display, the SV-GPS-250 is also “battery backed”. Each SkyView display should have its own SV-
BAT-320 installed and will then “share the load” of providing backup battery power into the
SkyView Network and SkyView Network devices.
Easier software / data updates
Instead of connecting a laptop computer with a serial port to a Dynon Avionics EFIS or EMS,
SkyView is updated by downloading data from an Internet-connected computer onto a USB
Flash Drive (memory stick), then bringing that USB Flash Drive to the SkyView display.
More flexible engine monitoring
Dynon’s EMS units had three general purpose inputs; the SkyView SV-EMS-220 has thirteen
general purpose inputs, and adds two voltmeter inputs, built-in differential fuel flow
measurement
8
, compatibility with low-voltage tachometer signals, and much more.
7 While the SV-GPS-250 does receive Wide Area Augmentation System (WAAS) signals in addition to GPS
signals, it is not a Certified WAAS GPS receiver that would be included as part of an IFR approach-capable GPS
system.
8 With the inclusion of a second fuel flow sensor for monitoring return fuel flow.