MC(EM)7455 how to Band Scan?

I find Mofi router Has Band scan function, This function is very useful for my project,I wonder how to make band scan?
"On the lefthand sidebar menu:
From there, click on Band Scanner>Start Scan.

You should get a result after several seconds that should look like this (This is from my MOFI, your results will differ from this example):

sh: can’t kill pid 803: No such process
CellScanner Start…

Band: B2 No Lock/Not Available
Band: B4 Bw: 20MHz Main: -114 (dBm) Diversity: -119 (dBm)
Band: B13 Bw: 10MHz Main: -95 (dBm) Diversity: -98 (dBm) "