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![]() Most PNA are perfectly readable under direct sunlight, with no reflections. We just discovered that, using polarized sunglasses, and inverting either polarization on sunglasses by 90 degrees, or simply turning 90 degrees the screen (physically, meaning rotate the device) the screen becomes bright and clear. There's more about this. We discovered that the polarization "effect" has different levels, peculiar to each device. For example, some SkyWay car navigators are very good with polarized sunglasses in landscape mode. Yesterday I have tested a MIO M400 PNA (a Nilox really), very cheap, 4.3 inches 480x272, and for the first time in 4 years I was able to perfectly read the screen under sunlight during the flight (4 hours). So price is not an issue for sunlight readability, on PNAs. It's all a matter of testing, and test again with polarized sunglasses. During the winter we shall dig into these matters, because not all sunglasses behave the same with these PNAs. In order to get to these conclusions, I have bought several PNAs (MIO, NILOX, HP, NAVIGON, etc.) and did some tests for the LK8000 usability. I think that a 4.3 inches device (that comes with a real RS232 and-or bluetooth) costing around 100 dollars (like a MIO) or its chinese equivalent will be widely used and appreciated in the next season. "Richard" ha scritto nel messaggio ... On Sep 13, 12:20 am, Eric Greenwell wrote: On 9/12/2010 9:36 AM, wrote: Yea I know its blatant spam but everyone else does it. initial Pic's here.. http://www.facebook.com/group.php?gi...17785&v=photos Will be flying with it today... I tried to find a place for a 7" display in my glider and it's hopeless. The 6" ClearNav just barely fits; a 5" Oudie shape is near perfect. Personally, brighter is better than bigger. A 6" display as bright as the ClearNav but with a case only 1/8" or so wider than the display would be almost perfect. Looking forward to pictures of the unit in flight. -- Eric Greenwell - Washington State, USA (netto to net to email me) - "Transponders in Sailplanes - Feb/2010" also ADS-B, PCAS, Flarmhttp://tinyurl.com/yb3xywl - "A Guide to Self-launching Sailplane Operation Mar/2004" Much of what you need to know tinyurl.com/yfs7tnz I have tried the 7" chinese PDA it is worse than the 5" version. In the sun viewabily is distroyed by glare and reflection. In general anything with a touch overlay is not good in the sun. In the sun the unit is very dim and extremely hard to distingusih even what software you are running. Out of the sun it is great and runs both SeeYouMoble PNA & WinPilot PNA. Of course I am comparing to the Ultimate which is not effected by the sun but costs much more. You do not need to fly with the unit to test in the sun just go out and place in the sun. Sunlight readabilty depends on the lack of a touch overlay, the contrast ratio, and the coatings on the display. The backlight brightness does not have much effect on the sunlight readability. Richard www.craggyaero.com |
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On Sep 13, 8:33*am, "PCool" wrote:
The MIO M400 does not need polarized sunglasses. I'll post some pictures of it under sunlight side by side with HX4700, HP314, MIO500, SkyWay etc.etc and let you judge (I need some sun, it is raining right now here, call it summer). Flying with classic RayBan yesterday for the first time in 4 years I could perfectly read the display, like reading the Zander LCD. I have no idea why the 400, which is a 62euro+VAT device, with RS232 (external adaptor needed, the same of 314) has a good screen. But I understood that the assumption "all screens are equal" is not true. Not since yesterday. Before takeoff, I was about to plug the HP314. Then I switched on the Mio 400, and I couldn't believe my eyes. But I thought it was kind of illusion, so I didn't even plug it to the power supply and took off with only internal battery. It lasted for two and a half hours, and it was a pleasure with my sunglasses to be able to read the screen as it never happened to me so far. On ground, I tested devices with polarized sunglasses because a friend discovered that it was making a big difference. I was told that polarized sunglasses sometimes make the LCD display black unreadable. Well, you have to try yourself rotating a PNA device and all of a sudden see a bright readable display. I am not talking of the Mio 400 now, but for example of a SkyWay. With a NILOX 100, no difference rotating the screen. Then, don't get me wrong, clearly these "cheap" PNAs need some work to be unlocked, some know how, the software for gliding, installation etc. and that doesn't come for free , as Naviter has shown. p.s. no customers, because LK8000 is free of charge, and that is becoming a problem for many people right now. Richardwww.craggyaero.com-Hide quoted text - - Show quoted text - So does this mean that you have to have special polizarized sunglass and have the screen at a certain angle to see in the sun? How do you explain and sell this to your customer? *Tell them you need to buy new prescriptions sunglasses to use this equipment and only use it in certain orientations. Richardwww.craggyaero.com Polarized glasses do make a difference with the PDA and PNA I use. My backup Mio 320 was not really visable in the sun until I used Polarized glasses. I am currently using a Hx4700 and polarized glasses also reduce the glare on that screen. Mike "0" |
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