User Manual

Appendix
BreezeNET PRO.11 Series 9-19 User’s Guide
System Characteristics
Receiver Sensitivity
The minimum RF signal power level required at the input of a receiver for
certain performance (e.g. BER).
EIRP (Effective Isotropic Radiated Power)
The antenna transmitted power. Equal to the transmitted output power
minus cable loss plus the transmitting antenna gain.
P
out
Output power of transmitted in dBm
Ct Transmitter cable attenuation in dB
Gt Transmitting antenna gain in dBi
Gr Receiving antenna gain in dBi
Pl Path loss in dB
Cr Receiver cable attenuation is dB
Si Received power level at receiver input in dBm
Ps Receiver sensitivity is dBm
Si = P
out
- Ct + Gt - Pl + Gr - Cr
EIRP = P
out
- Ct + Gt
Example:
Link Parameters:
Frequency: 2.4 Ghz
P
out
= 4 dBm (2.5 mW)
Tx and Rx cable length (Ct and Cr) = 10 m. cable type RG214 (0.6 dB/meter)
Tx and Rx antenna gain (Gt and Gr) = 18 dBi
Distance between sites = 3 Km
Receiver sensitivity (Ps) = -84 dBm