PMP 400/430 and PTP 200/230 Series Configuration and User Guide
pmp-0042 (March 2014)
Page 50 of 98
Signal to Noise Ratio (SNR)
PMP 430 and PTP 230 (OFDM) radios display a Signal to Noise Ratio (SNR) on the AP/BHM and the
SM/BHS. Higher the SNR better is the link.
Typical uses of SNR include:
Initial installation, placement, and aiming. The best link has the highest SNR,
as well as a sufficient receive power level.
Link health monitoring
General
troubleshooting
Detecting interference – watch for decreasing SNR while receive power level
remains constant.
The auto-rate adapt algorithm chooses the best modulation for each link direction based on the Resend
rates, not SNR, but the SNRs at which modulation typically changes can be measured
and are shown in
Table 15
.
5.7 GHz FSK
AP TX End Time
and
AP RX Start Time