Customer has no problems running calibrator wlan0 wl18xx_plt get_rx_stats locally on their own board as documented here:
http://processors.wiki.ti.com/index.php/WL18xx_RX_Testing#Examples
But a remote test house reports they are getting zeros for RSSI on same customer hardware using Keysight E6640A
RX statistics (status 0)
Total Received Packets: 3454
FCS Errors: 0
MAC Mismatch: 0
Good Packets: 3454
Average RSSI (SOC): 0
Average RSSI (ANT): 0
PER: 0.000000 # PER = Total Bad / Total Received
Have advised them to use the MAC addresses as mentioned on above link. Believe both are conducted tests (and customer not using Keysight E6640A locally).
Anything else we should advise for testing with Keysight E6640A for sensitivity testing?