FreeCalypso > hg > freecalypso-reveng
comparison pirelli/txcal @ 279:a7707c174510
pirelli/{rssi,txcal}: results of the Pirelli to CMU200 experiment
| author | Mychaela Falconia <falcon@freecalypso.org> |
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| date | Sat, 16 Feb 2019 18:30:11 +0000 |
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| 278:42575bc59702 | 279:a7707c174510 |
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| 1 In the same experiment in which I connected our CMU200 instrument to a decased | |
| 2 Pirelli motherboard (see rssi) I also observed the Tx power levels put out by | |
| 3 this phone in the PCS band by commanding the phone (by way of the CMU200 acting | |
| 4 in the role of a BTS in signaling mode) to transmit at each PCL from 0 to 15 | |
| 5 and observing the actual power measured by the CMU200. Here are the findings: | |
| 6 the Pirelli puts out 29.2 dBm at the highest PCL 0 (spec number is 30 dBm), | |
| 7 whereas for all other PCLs the measured power was within 0.2 dB of the spec | |
| 8 number. Thus it appears that Pirelli's Tx calibration was done like TI's | |
| 9 LoCosto, with only the highest power level shifted down by 0.8 dB while all | |
| 10 others are spec numbers. This is a smaller fudging than that which was done by | |
| 11 Openmoko and which we currently replicate on our FCDEV3B modems. |