Hanning
TEST AFE5808/08A
8.2
Step 2: Single Tone FFT
•
Select the Single Tone FFT page at the TSW1250 GUI.
•
Connect Channel 1 of the AFE5808/08AEVM to a signal generator through an LP filter. If an LP filter
is not present, the result will not be good.
•
Set the amplitude of the signal generator to -25dBm.
•
Set the frequency of the signal generator to 2.00439453M to match the GUI.
•
Change the window option to Hanning. This is because the input signal and the onboard CMOS clock
are noncoherent.
•
Press the Capture button to get the test result.
•
Repeat for Channel 2 through Channel 8.
Figure 3. User Interface: Single FFT Format
11
SLOU328A
–
November 2011
–
Revised December 2011
AFE5808/08AEVM (Rev E) Evaluation Module
Copyright
©
2011, Texas Instruments Incorporated