mirror of
git://projects.qi-hardware.com/ben-wpan.git
synced 2024-11-23 01:24:02 +02:00
67 lines
1.6 KiB
Plaintext
67 lines
1.6 KiB
Plaintext
Same test setup as for send-20100909. Board 100908-A was modified to have
|
|
a 220 nH inductor in the C7 position, instead of a 0R resistor.
|
|
|
|
Distant Local
|
|
--------------- --------------- ---------------
|
|
100813-red 100813-orange 100908-A (with inductor)
|
|
|
|
TX 255, -91 255, -85
|
|
TX 255, -90 255, -85
|
|
TX 255, -91 -
|
|
TX 255, -90 255, -85
|
|
TX 255, -91 garbled
|
|
|
|
- TX 255, -47
|
|
- TX 255, -47
|
|
- TX 255, -47
|
|
- TX 255, -47
|
|
garbled (-90) TX 255, -47
|
|
|
|
255, -82 255, -43 TX
|
|
255, -82 255, -43 TX
|
|
255, -82 255, -43 TX
|
|
255, -82 255, -43 TX
|
|
255, -82 255, -43 TX
|
|
|
|
Control experiment:
|
|
|
|
100813-red 100813-orange 100908-B (unmodified)
|
|
|
|
TX - 255, -83
|
|
TX garbled (-91) 255, -86
|
|
TX - 255, -86
|
|
TX garbled (-91) 255, -86
|
|
TX - 255, -86
|
|
|
|
255, -83 255, -43 TX
|
|
255, -84 255, -43 TX
|
|
255, -85 255, -43 TX
|
|
255, -84 255, -43 TX
|
|
255, -84 255, -43 TX
|
|
|
|
|
|
Summary
|
|
-------
|
|
|
|
Direction No inductor (1) With ind. (2) Change
|
|
------------------------------- --------------- ------------ ------
|
|
100813-red -> 100813-orange 255, -87 255, -91 -4 dB
|
|
100813-red -> 100908-A 255, -88 255, -85 +3 dB
|
|
100908-A -> 100813-red 255, -85 255, -82 +3 dB
|
|
|
|
100813-red -> 100813-orange 255, -90 - ?
|
|
100813-red -> 100908-B 255, -90 255, -86 +4 dB
|
|
100908-B -> 100813-red 255, -87 255, -84 +3 dB
|
|
|
|
(1) Data from send-20100909
|
|
(2) Only 100908-A was modified. Changes in the measurements with
|
|
100908-B show inaccuracies of the test setup.
|
|
|
|
|
|
Conclusion
|
|
----------
|
|
|
|
The differences observed are the same for the modified 100908-A board
|
|
and the unmodified 100908-B board. The inductor therefore does not seem
|
|
to have a significant effect on transceiver performance.
|