Other Parts Discussed in Thread: WL1837,
Tool/software:
Hello,
We use calibrator command for WIFI module wl1837 in Korean RE testing, spurious emission (Rx) level limitation is required below -54dbm in 2.4G RX testing, but the actual result is about -52/-53dbm that exceeds a little.
According to the recommendation in https://e2e.ti.com/support/wireless-connectivity/wi-fi-group/wifi/f/wi-fi-forum/1071808/wl1837mod-spurious-emission-rx-test-failure-during-korean-re-testing
Below steps have been tried, but it seems doesn't help.
1) Use latest firmware 8.9.1.0.2 which is from https://git.ti.com/cgit/wilink8-wlan/wl18xx_fw/
2) Use WL1837MOD_INI_FCC_CE_JP.ini which is from https://git.ti.com/cgit/wilink8-wlan/18xx-ti-utils/tree/wlconf/official_inis
3) Change 5G antenna number. wl18xx.phy.number_of_assembled_ant5 = 0x02
4) Adjust calibrator command add set_antenna_mode_24G.
We tried several combinations of calibrator command, but all test result don't meet the requirement. Here is an example of commands being executed.
calibrator wlan0 plt power_mode on;sleep 0.5;
calibrator wlan0 wl18xx_plt tune_channel 1 0 1;sleep 0.5;
calibrator wlan0 wl18xx_plt set_antenna_mode_24G 2 2 0 1 0 1;sleep 0.5;
calibrator wlan0 wl18xx_plt start_rx 01:02:03:04:05:06 01:02:03:04:05:06;sleep 0.5;
calibrator wlan0 wl18xx_plt get_rx_stats;sleep 0.5;
We found the issue may be caused by plt mode, because once "calibrator wlan0 plt power_mode on" is executed, spurious emission exceeds the limitation.
