diff pirelli/txcal @ 279:a7707c174510

pirelli/{rssi,txcal}: results of the Pirelli to CMU200 experiment
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 16 Feb 2019 18:30:11 +0000
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+In the same experiment in which I connected our CMU200 instrument to a decased
+Pirelli motherboard (see rssi) I also observed the Tx power levels put out by
+this phone in the PCS band by commanding the phone (by way of the CMU200 acting
+in the role of a BTS in signaling mode) to transmit at each PCL from 0 to 15
+and observing the actual power measured by the CMU200.  Here are the findings:
+the Pirelli puts out 29.2 dBm at the highest PCL 0 (spec number is 30 dBm),
+whereas for all other PCLs the measured power was within 0.2 dB of the spec
+number.  Thus it appears that Pirelli's Tx calibration was done like TI's
+LoCosto, with only the highest power level shifted down by 0.8 dB while all
+others are spec numbers.  This is a smaller fudging than that which was done by
+Openmoko and which we currently replicate on our FCDEV3B modems.