Hi,
I am using FRDM-KW40Z Zigbee.
During the energy detection scan, I get a 8bit value. how can I translate it to dB?
Is 25% a good threshold value for the energy during an energy detection scan?
Here after is exactly what I getting from several router connected to the Zigbee controller. The information is collected via Mgmt_NWK_Update_notify message data.
Per channel, I'm so getting a value between 0 and 0xFE (while 0xFF stand for indicates there is too much interference on the channel as per the ZigBee PRO Stack documentation)
Network Energy Level Report
-----------------------------------------------
nwkid Tx Failure 11 15 19 20 25 26
ca62 40 0 171 172 162 161 179 175
2d25 43 0 175 194 168 165 176 196
f775 32 0 187 183 164 170 177 187
9596 36 0 192 196 171 163 175 202
eb73 30 0 180 184 161 170 180 187
fc80 24 0 191 185 169 162 178 191
83c2 23 0 204 210 205 206 190 207
1f33 33 0 174 188 172 167 179 188
0fc4 40 0 175 179 172 174 166 177
aa38 28 0 187 189 180 177 179 191
Question:
- How to interprate those result. Should the reported energy-level measurements be as lower as possible to report a better channel or vice-versa ?
- Can we convert this reported energy-level measurements into db ?
I'm using JN5168
Hi Divya,
Did you mean 802.15.4? The KW40z doesn't support Zigbee.
dBm and RSSI are different units of measurement that both represent the same thing: signal strength. The difference is that RSSI is a relative index, while dBm is an absolute number representing power levels in mW (milliwatts).
Could you provide for information about your final application?
Hope it helps
Mario