Hi all,
I’ve been testing some XBee-PRO ZB S2B devices with a electromagnetic radiation detector. As result, I’ve found some unexpected values I hope you could help me to understand:
The nodes in the network are configured to use maximum RF power (PL register set to 4, and PM register set to 1). In consequence, the power at devices’ amplifier output should be 12 dBm.
Additionally, the tests was performed using a standard pigtail (10mm long, UFL to SMA), and a standard antenna (Quad Band [824-960/1710-1900], 3dBi, and SMA Connector). Both elements were provided by our national DIGI distributor, to be used with XBee devices.
Once all devices are deployed forming a network and interchanging information, an electromagnetic radiation detection equipment was used to measure the power next to each one of DIGI devices’ antennas. The maximum radiation peak detected by the equipment in 2.4 GHz band was -40dBm.
Is there any reason to obtain these low power measurements? Shouldn’t we be detecting at least 10dBm?
Regards,
José M.