FreeCalypso > hg > fc-rfcal-tools
diff txlevels/fcom1.README @ 88:c5c1beae5f99
omrf1 txlevels profiles renamed to fcom1, see added fcom1.README
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 17 Jul 2017 01:17:38 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/txlevels/fcom1.README Mon Jul 17 01:17:38 2017 +0000 @@ -0,0 +1,24 @@ +The name "fcom1" stands for "FreeCalypso hardware, Openmoko-based, version 1", +and the set of Tx power level calibration profiles named "fcom1" has been +created empirically by the Mother of FreeCalypso to produce successful Tx level +calibration runs on our current FCDEV3B boards with our current CMU200 and +cabling setup. + +These fcom1 Tx power level calibration profiles should ONLY be used for +(re)calibrating FreeCalypso-made hardware, i.e., FCDEV3B boards and potentially +other closely related FC hardware designs in the future; these profiles are NOT +expected to be correct for recalibrating Openmoko's own FreeRunners or for +calibrating other (non-FreeCalypso) Openmoko-derived GSM devices that retain +the internal antenna and the Murata SWD RF test port used by Openmoko, as +opposed to the SMA used on our FCDEV3B. + +For anyone interested in one of those latter use cases, a different set of +profiles would need to be created; the Mother is not currently able to create +those profiles with a good confidence of correctness despite owning several +Openmoko-made FreeRunners and the appropriate Murata MXHS83QH3000 adapter +because the insertion loss of the latter adapter is not precisely known. +Knowing the total insertion loss along the full path from the DUT to the CMU200 +is a prerequisite for determining the correct profiles for Tx power level +calibration, and when Murata SWD/SWF RF test ports are involved, this cabling +path includes both the cable from the CMU200 ending in an SMA and the adapter +from Murata that goes between the SMA and their switch connector.