Table 15: Minimum Snr By Modulation And Direction - Cambium Networks PMP 400 Series Configuration And User's Manual

PMP 400/430 and PTP 200/230 Series Configuration and User Guide

Table 15: Minimum SNR by Modulation and Direction

Modulation
1X
2X
3X
Note that due to differences in the SM/BHS and AP/BHM radios, the SNRs are slightly different for downlink
and the uplink.
Even if a link is capable of operating at a high SNR, if you lock the link down to 1X it won't report
SNR higher than what it needs to run in 1X. (The best practice is to let the system use 'rate adapt' across
1X/2X/3X to get the best link performance and highest sector capacity.)
Traffic is needed to most accurately measure SNR, so a link with little traffic will not have the right SNR
readings.
pmp-0042 (March 2014)
Minimum SNR
Downlink
7 dB
15 dB
23 dB
Uplink
9 dB
16 dB
24 dB
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