freecalypso-reveng: pirelli/txcal annotate

annotate pirelli/txcal @ 382:4307b57229d3

miscprog: tone-convert written, compiles

author	Mychaela Falconia <falcon@freecalypso.org>
date	Wed, 10 Nov 2021 00:04:12 +0000
parents	a7707c174510
children

rev	line source
279 a7707c174510 pirelli/{rssi,txcal}: results of the Pirelli to CMU200 experiment Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1 In the same experiment in which I connected our CMU200 instrument to a decased
a7707c174510 pirelli/{rssi,txcal}: results of the Pirelli to CMU200 experiment Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	2 Pirelli motherboard (see rssi) I also observed the Tx power levels put out by
a7707c174510 pirelli/{rssi,txcal}: results of the Pirelli to CMU200 experiment Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	3 this phone in the PCS band by commanding the phone (by way of the CMU200 acting
a7707c174510 pirelli/{rssi,txcal}: results of the Pirelli to CMU200 experiment Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	4 in the role of a BTS in signaling mode) to transmit at each PCL from 0 to 15
a7707c174510 pirelli/{rssi,txcal}: results of the Pirelli to CMU200 experiment Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	5 and observing the actual power measured by the CMU200. Here are the findings:
a7707c174510 pirelli/{rssi,txcal}: results of the Pirelli to CMU200 experiment Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	6 the Pirelli puts out 29.2 dBm at the highest PCL 0 (spec number is 30 dBm),
a7707c174510 pirelli/{rssi,txcal}: results of the Pirelli to CMU200 experiment Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	7 whereas for all other PCLs the measured power was within 0.2 dB of the spec
a7707c174510 pirelli/{rssi,txcal}: results of the Pirelli to CMU200 experiment Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	8 number. Thus it appears that Pirelli's Tx calibration was done like TI's
a7707c174510 pirelli/{rssi,txcal}: results of the Pirelli to CMU200 experiment Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	9 LoCosto, with only the highest power level shifted down by 0.8 dB while all
a7707c174510 pirelli/{rssi,txcal}: results of the Pirelli to CMU200 experiment Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	10 others are spec numbers. This is a smaller fudging than that which was done by
a7707c174510 pirelli/{rssi,txcal}: results of the Pirelli to CMU200 experiment Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	11 Openmoko and which we currently replicate on our FCDEV3B modems.