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The hardware sniffer is based on CC2531 device, according to the datasheet typical value should

be -97dBm.

I've seen -97 myself on one of the dongles we are using (didn't pay attention on the others),

with correctly received packet.

Thanks, I think you are talking about USB dongle. How about SmartRF05 Broad with CC2530EM?

Rui

Can't say you for sure, I haven't tested it my self, but my guess is the same as ifor USB dongle,

since cc2530 typical sensitivity is -97dBm by the spec

Giving it some though, sensitivity of CC2530EM with discrete matching parts should be better

than sensitivity of USB dongle with cc2531 with balun chip.

RSSI value shown in packet sniffer side is the RSSI for packet sniffer, right? they are not from RSSI of captured device.

Rui

One issue I have noticed is:

RSSI value recorded when packet sniffer is running is different from RSSI of saved psd file. (I mean for the same packet)

Is this a bug?

Hi,

1) Yes, the RSSI shown in the Packet Sniffer is the RSSI of the packet captured by the sniffer.

2) I know a bug has been reported for CC2540, where the RSSI value is displayed as 0 when loaded from a .psd file. Is this the case for you, what chip do you use as a packet sniffer (CC253x)? 

Thanks,

what I observe is RSSI value for saved .psd file is larger than real time capture. I don't exactly do all investigation about the number, but my impression is saved file has 40db increase for RSSI(in real time, it is -58dbm, then saved file it is -18 dbm)

Rui

This sounds like a bug. Thanks for the feedback, I'll report it to the developers.

Br,
ABO