This example uses a coherent 790 MHz input on the
channel A input with the ADC in a 1x averaging mode with dither enabled.
Procedure
- In the Bypass Mode box,
use the DDC dropdown to change to Complex Mode. The usser will notice the
box title changes to Complex Mode to reflect the current DDC operating
mode.
- Use the Decimation
dropdown to change the decimation to 8.
- Set the LMFSHd setting to
4-4-2-1-0.
- Set the channel INA1 NCO0
and NCO1 to 800 (MHz).
- Change LMK divider from 8
to 16.
- Once these settings are verified
and match Figure 4-1, press the
Device Bringup button.
- Wait until after the message
Device Bringup Completed appears in the Log.
- In HSDC Pro, connect to the
TSW14J58EVM and select ADC32RF5x_4421_6G-8G as the INI file shown in
Figure 4-2.
- Update the firmware by pressing
Yes on the pop-up window and waiting for the Downloading
Firmware message to finish.
- Open the Additional Device
Parameters menu by clicking on the gear next to the ADC Output Data Rate
field.
- Check the tickbox labeled
"Enable?" and then enter the parameters shown in Figure 4-3.
- Once completed, press OK.
- Check the tickbox labeled Auto
Calculation of Coherent Frequencies and you will see the ADC Input
Target Frequency change from 790 M to the coherent frequency. Set the
signal generator connected to channel A input to this coherent frequency.
- Change the view window from
Real FFT to Complex FFT and select channel 1/4.
- Press the Capture button.
You should now see something similar to Figure 4-4.
- Adjust signal generator output
such that the measured fundamental power in HSDC Pro is at the user's desired
level.