conf t
int dot11radio X
no mbssidx
station-role spectrum
exit
exit

show spectrum status
----------------------------------------
SurveyAP#show spectrum status
Spectrum FW status slot 0:
version: 1.14.2
status: up, crashes 0, resets 0
load:     38.00 45.00 50.75 51.75
NSI Key: 25FA418E18EBEF028A7FB775F11610A
NSI:      configured
dfs_wdog: 1
reg_wdog: 1 0
dfs_freq: 0
Spectrum FW status slot 1:
version: 1.14.2
status: up, crashes 0, resets 0
load:     3.50 3.50 3.75 3.75
NSI Key: 125FA418E18EBEF028A7FB775F11610A
NSI:      not configured
dfs_wdog: 0
reg_wdog: 255 290
dfs_freq: 0

Launch Chanalyzer for CleanAir or Chanalyzer 5 with the CCA licenses.
Enter the AP ip address and NSI key.

Enjoy!