Hi Dialog,
We've get the official software, it's great !
然后我们测试了两种情况（四个_dbm和max_power）。测试手机可以预期RSSI当它非常接近天线时，电源分布器输出也是完美的，因此RF输出功率电平还可以，但范围测试结果仍然不好。
In same condition (Advertising with 100ms interval) and same place(Office building), the longest outdoor distance is obviously shorter than our customized DA14580 beacon module (without range extender, use small PCB antenna, 0dbm output,) and other LE USB dongle (Based on other company LE chip, without range extender, use small PCB antenna, 4dbm power output).
Could you tell us the possible reason? Or the "DA14585 Range Extender Daughter Board" is just a demo or prototype, need customer to design, test and optimize?
Thanks in advance!
布鲁克/彼得
Device:
Hi Peter Luo,
嗯，电路板的范围在视线上达到300米，没有障碍物，户外测量，您是否可以估计您正在测试的范围（从这将提供以来的视线和障碍物你是一个适当的范围估计）？此外，您还可以确保将FEM正确启用，例如在两个不同的设置之间检查电话上的RSSI，并检查该值是否更改时更改（仅用于确保已启用FEM）。此外，您正在执行实验的地方非常至关重要，因为在封闭的空间中，有可能改变无线设备的范围和性能的反射。
Thanks MT_dialog
Hi Dialog,
Thank you very much for your so quickly response!
I am on business trip now, will do test later, and return you the result at once!
Thank you again!
布鲁克/彼得
Hi Dialog,
Sorry for so later reply !
Today, we've finished the range test finally.
我们把DA14585 extender委员会(最大发射功率水平), XX 4dbm usb dongle and XX 8dbm board on same position without any obstacles, then move a iPad and mobile phone as far as possible until they can''t receive any beacon if it move forward more 1 meter to test the longest distance.
The difference is obviously, the longest distance order is :
XX 8DBM板> DA14585 Extender> XX 4DBM USB Dongle。
在办公大楼内，最长的距离顺序是：
XX 8DBM板> XX 4DBM USB DONGLE> DA14585扩展器
根据测试结果，尤其是DA14585 Extender的墙壁的能力似乎薄弱，这对我们来说是一个问题。
Maybe our testing way not perfect, we'll capture the air wireless wave of I, Q signals to analysis the reason if we've time in future.
现在我们的许多项目都是基于DA1458x的，未来，一些项目需要更长的范围，我们希望我们仍然可以使用DA1458X系列。
Thank you very much !
布鲁克/彼得
Hi Peter Luo,
Well, measuring the range with obstacles isn't a quite reliable way to measure, since reflections due to obstacles can affect the signal and provide peculiar results, also can you please mention an estimation of the maximum distance that the range extender could achieve in your experiments in open space in order have a clear view ? Also please make sure that you have properly enabled the FEM and the changes that you apply are affecting the application, for example you can change the settings in your sw from MAX_POWER to a less power configuration and measure the RSSI via a phone and check if the RSSI on the phone is changing depending on your settings (that way you will be aware that you are configuring the FEM properly).
Thanks MT_dialog
Hi Dialog,
我们确实确认了有限元素，当测试设备接近FEM或距离100米时，RSSI值正常。
The estimation of the maximum distance of DA14585 range extender in open space is about 250~300 meters, and the other XX 8dbm board is about 50~80 meters more longer.
Although the maximum distance in open space is important, and 250~300 meters maybe good enough, the capability of through wall is important too, especially in house.
We'll analysis the quality of signal in future.
Thank you very much !
布鲁克/彼得
Hi Peter Luo,
Well in open space your estimation is quite the same as our expected range as mentioned above, regarding the indoor tests, this is quite tricky to measure as mentioned since obstacles might affect the result due to reflections of the signal. Something that also affects the performance is the positioning of the range extender, since it uses a printed antenna the device will perform best when the daughterboard is standing, also the other modules that you are comparing with, do they have an external antenna or they are also using a printed one ? Anyway, if you have any results from further tests please fell free to share, also can you also share the model (iPad/Android) device that you are using to your experiment in order to check if we can have a similar setup and make some tests ?
Thanks MT_dialog
Hi Dialog,
I left the DA14585 range extender and other XX 8dbm board in my car with door closed in our underground parking garage, the difference is more obviously.
另一个XX 8DBM板使用印刷天线作为DA14585范围扩展器，两个板正常，印刷天线是一侧，两个板之间的距离约30cm。
We use a iPad Air and special mobile phone with strong receiving sensitivity, the test software is LightBlue.
谢谢 ！
布鲁克/彼得
Hi Peter Luo,
Thank you for the feedback, i will let you know if anything comes up from the testing.
最好的问候mt_dialog.