This was posted on an Italian Phantom 3 site and translated via Google Translate:
if true, it may account for why some people get lagging and video glitches even when using same display devices.
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After analyzing and collecting the experiences had during the last firmware updates by users with the Phantom 3, especially in relation to upgrading the RemoteController, we discovered, doing research on the web, some very interesting things about their characteristics radio supplied with the drone of home DJI ...
Apparently the boys, there would be two radio models on the market, the GL300A and GL300B (you can read the code on the back of your RC, at the bottom, as in the picture). What are the differences between the two models?
- GL300A (the model "old"), would be equipped with video processor "DaVinci" TMS320DM368 Texas Instruments (
http://www.ti.com/product/tms320dm368) and USB 2.0 controller CY7C68013 of Cypress (http: / /
www.cypress.com/file/138911/download)
- GL300B (the model more "recent"), would without a video processor "DaVinci", but would instead be equipped with USB 3.0 (not 2.0 as in version A) CYUSB2014 of Cypress (
http://www.cypress.com / file / 140296 / downloads) and sensing of charge CW2015CWAD CellWise (
http://www.cellwise-semi.com/en/pro_show.asp?id=1498), not present on version A. Additionally, other difference, B apparently can be refreshed only via app and not via USB ...
So, in summary in plain English, the GL300A have an internal hardware for better performance management and encoding (or decoding) video stream, while the GL300B higher speed connection to the tablet / smartphone ...
This leads us to make some arguments and ask ourselves some questions, to which we would like to answer with you ...
First, why these two models of radio? Are linked to the model of the drone (professional / advanced) or only to the period of production? And, if they are related only to the period of production, because this rethinking by DJI during construction?
POSSIBLE SCENARIOS:
SCENARIO 1:
two different strategies of management of the video stream:
- A more in capacity of internal processing;
- In B "delegation" or part of the calculation to the CPU / GPU of the mobile device (this also justifies the presence of USB 3.0 port for sending data faster than the tablet / smartphone).
SCENARIO 2:
with model B the DJI decided not compress more direct flow to the USB port (disappearance of video processing), being therefore the need for greater "capacity" data (the appearance of the USB 3.0 controller).
And finally, we throw there, but if the problems of overheating of the mobile device that presented above with the previous firmware, were linked to one of the two versions of the radio in particular (and maybe the B that "stresses" more smartphone / tablet)?
We do not have answers for now, and maybe ours are simple inferences who knows (maybe they are also wrong to our sources), but we'd like to do with you a census data and a series of surveys to understand something more ... Please, if you are interested or want to make your contribution, join our group affiliated
https://www.facebook.com/groups/1566114093641842/, thanks