Danielle, While I cannot give you precise answer for the expected output on the MicaZ, I can describe our experiences on Tmote Sky, which uses the same CC2420. The valid values for CC2420 power setting seem to range between 1 and 31, and they all seem to affect the output power. It looks like the model that best fits the setting vs. power level is the following: the register setting sets the amplitude of the outgoing RF signal. It looks like the lowest setting of TX power (1) results in the output power of about -40dBm, which should give you transmission range (indoor, omnidirectional antenna) of less than 3 meters.
Best regards, Rob On 5/25/07, Munaretto, Daniele <[EMAIL PROTECTED]> wrote:
Dear all, In the MPR-MIB user's manual (rev.B), at page 24, there is a table with some Power Register code and the corresponding TX RF power in dBm. Unfortunately not all the codes have the corresponding. Does anyone know the RF power when using the lowest code number, e.g. 0? Because 3 is -25 dBm, that seems to be the lowest, but from my experiments 0 is the lowest (and most useful for my work!). I am setting the RF power with the cc2420control interface. Thank you for your availability Cheers Daniele Munaretto Researcher DoCoMo Communications Laboratories Europe GmbH Landsbergerstraße 312 80687 Munich Germany Mobile : +49- 162- 2919-218 Office : +49- 89- 56824-218 Fax : +49- 89- 56824-300 [EMAIL PROTECTED] visit us in http://www.docomolab-euro.com Managing Directors (Geschäftsführer): Dr. Toru Otsu, Dr. Narumi Umeda, Kazushige Yoshida Amtsgericht München, HRB 132967 _______________________________________________ Tinyos-help mailing list [email protected] https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
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