Part Number:WL1837MOD
Hello,
There is a high 2nd harmonic that is looking marginal compared to the EN 300 328 Rx spurious emission limits. We verified this conducted on the eval board and confirmed the 2nd harmonic when it is set to Rx in Awake mode in the RTTT software. When in 'Listen' mode, the emission disappears. Can you clarify the difference and which mode it should be set for Regulatory purposes. In our test, we have been using the test scripts to set to RX mode (processors.wiki.ti.com/.../WL18xx_RX_Testing) and also observe the failing 2nd harmonic. Are the below the correct set of test scripts to set to Rx mode for regulatory test? We also evaluated this radiated and accounted for antenna gain and cable losses, we also observe the 2nd harmonic failing in Rx mode. Can you advise.
The first analyzer plot shows the 2nd harmonic in Rx mode using the RTTT software and the second analyzer plot shows the 2nd harmonic in Tx mode as a comparison.
Scripts executed to set Rx to Channel 1:
calibrator tiw_sta0 plt power_mode on'
calibrator tiw_sta0 wl18xx_plt tune_channel 1 0 0'
calibrator tiw_sta0 wl18xx_plt start_rx 00:11:22:33:44:55 11:22:33:44:55:66'
calibrator tiw_sta0 wl18xx_plt get_rx_stats'
Conducted Rx emission plot of 2nd harmonic using development board:
Conducted TX emission on 2nd harmonic (As comparison)
