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There was some discussion on the RS232 topic about Skyview system interconnect. I thought that I would repost my reply with a different title, and add various schematic pages for criticism/review by Dynon and others.  The intent is to refine the designs, prevent wiring errors and provide...

Your docs state that the dimmer output (currently unsupported) is an open collector pwm output. 1) Is this a pnp or npn output (i.e. does it pull to +12 or ground or)? 2) Can it drive any appreciable current, or is it intended to be just a drive signal to an external device? The only device...

Are the factory wiring harness SVN, RS232 and audio cables shielded, twisted or otherwise? I'm planning connectors and I need to know if I need to accommodate shield carry-throughs. If there is a mix, it would be nice to know which ones are which. Thanks, Vern

The dual SV power inputs, are they diode isolated? I'd like to wire redundant power connections from separate circuit breakers, but this only works if the SV power inputs are diode isolated (i.e. a fault on one bus does not propagate to the other bus). Thanks, Vern

When Dynon offers the software add-ons for terrain, SynVis and so on, is the pricing good for the entire network (multiple screens) or per EFIS unit? This could be quite a cost penalty for multi-EFIS installations if we have to pay multiple times for the same database. Vern

I see Dynon has announced that multiple EFIS systems can or-tie their serial outputs to drive other instruments. This allows for graceful failure scenarios without an external switch. This is a great innovation because it simplifies wiring and dramatically improves fault tolerance of multiple...

I would like to use voltmeter 2 to measure the advance on my electronic ignition, which has a full-scale output of 200 mV. What is the resolution of the SkyView voltmeter, and can it support this application? Thanks, Vern Little

I may have suggested this before, but here is a function that can be implemented with the Skyview system: Flap overspeed alarm. Tie a flap position switch (or potentiometer) to an input (contact or gp input) to raise an alarm is Vfe is exceed while the flaps are deployed. This would eliminate...

The Skyview systems support stereo output.  I assume that this will be the primary output associated with warnings and alarms, plus future enhancements (playing MP3 files perhaps?). What is the recommended intercom/audio panel wiring:   an unswitched stereo input; a switched (automuted) stereo...

Will the Skyview EMS support 3-axis trim indication? Most engine monitors show flaps, pitch and roll trim, but not yaw trim. Thanks, Vern

It seems pretty obvious to me that the D10A will never go away due to it's compactness and cost. Even with the next-gen displays, the D10A makes a pretty good backup. The issue(s) at hand are incompatible DSABs, the need to route static/pitot/aoa to the back of the instrument and a remote...

I have found that if I set my Baro on the ground and leave the menu page in place, the VSI bar does not work. I need to exit the setting page then everything works fine. If I set the Baro in flight later on, eveything works fine. Let me know if you need more information. Current software...

I know that Dynon does not want to develop a GPS Map display because it's a lot of effort just to replicate what GPS manufacturers are expert at. That's too bad, though because I think competitors will make advances on this front, and put Dynon at a disadvantage. Currently, I think the best...

Once of the features that I built into my glareshield AOA display (V-Speed ADS from www.vx-aviation.com) is the ability to provide a FLAPS extended alarm when exceeding Vfe and the flaps are extended. In the spirit of obsoleting my own product (and improving Dynon's), I think it would be very...

Can you illuminate me on the characteristics of the heated Pitot/AOA? Does the controller cycle the heating element on and off to maintain temperature, or is it a linear regulator? If it's a linear regulator, what is the minimum current through the element during normal operation? For...

Now that you can take GPS data for the HSI page, I think it's quite possible for Dynon to have auto calibration for airspeed. For example, one could fly (at least three) headings under screen prompt for the EFIS to determine airspeed errors. This could be done at several indicated airspeeds to...