Run the Demonstration (AD469x)

Run the Demonstration

AD469x is sixteen channel multiplexed ADC, but on EVAL-AD469x-FMCZ has only two channel viz ch0 and ch1 is available to give a external signal source. rest of the channel from ch2 to ch15 is given a onboard fixed dc supply.For details refer product [link]. For channel ch0 and ch1 expects a differential signal but chx(-) channel is effectively grounded on EVAL-AD469x-FMCZ. So EVAL-AD469x-FMCZ ch0 and ch1 requires a signal within range of 0V to Vref i.e 5V , negative supply signal need to be bias or offset to make in range of 0-5V signal.

Run the demonstration standalone

Power up the unit using this hardware configuration. Wait approximately 60 seconds for the unit to be fully functional.

IIO Oscilloscope will be automatically launched on the system desktop. For configuration using other feature of AD469x follow [this link].

Enable voltage0 ADC channel

Select a Plot Channel to be displayed in IIO Oscilloscope. Click on the check box in the Plot Channel window adjacent to voltage0. Right click on axi-AD469x-adc in the Plot Channels window. Select voltage0 and rising edge as the trigger parameters.

Capture Time Domain Signals

Select an appropriate number of Time Domain samples in the Plot Type window. Press the Capture / Stop button to begin the capture process.

Capture Frequency Domain Signals with Frequency Markers enabled

Change the capture mode to Frequency Domain. Select an FFT Size and Average. Press the Capture / Stop button to begin the capture process.

Right click in the IIO Oscilloscope plot area. Select Single Tone markers. Press the Capture / Stop button to begin the capture process with markers.

Note the information in the Marker window. This capture shows a signal source of 70 kHz with harmonic components.

Run the demonstration via ethernet

Define the target IP address

Type the following at the terminal prompt to set the target IP address

$ ifconfig eth0 192.168.0.2 up

Launch IIO Oscilloscope

Note: IIO Oscilloscope creates a .osc_profile.ini file in the Users/UserName/Appdata/Local directory. The next time IIO Oscilloscope is opened, the existence of this file delays connection to the target. It is recommended to delete the .osc_profile.ini (if it exists) prior to launching IIO Oscilloscope.

Connect to the target

Select the Discoverable/Scan option and click the Refresh button..
A successful connection results in discovery of the IIO devices. Press OK to continue.

Enable voltage0 ADC channel

Select a Plot Channel to be displayed in IIO Oscilloscope. Click on the check box in the Plot Channel window adjacent to voltage0. Right click on axi-AD469x-adc in the Plot Channels window. Select voltage0 and rising edge as the trigger parameters.

Capture Time Domain Signals

Press the Capture / Stop button to begin the capture process.

Capture Frequency Domain Signals with Frequency Markers enabled

Change the capture mode to Frequency Domain. Select an FFT Size and Average. Press the Capture / Stop button to begin the capture process.

Right click in the IIO Oscilloscope plot area. Select Single Tone markers. Press the Capture / Stop button to begin the capture process with markers.

Note the information in the Marker window. This capture shows a signal source of 13 kHz with harmonic components.

Shutting down the demo

Power down the target. Type the following at the terminal prompt
```
  $ poweroff  
```
Wait until the linux terminal shows
```
  $ reboot : System Halted
```
Close out IIO Oscilloscope and all associated windows

Prev- Install Required Software

Return to AD469x Quick Start Guide