VNA Help
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DC Source Control

When a DC Source (power supply) is configured as an external device, the new DC source can be controlled from the VNA using this dialog. Internal DC Sources are also controlled from this dialog.

See Also

Configure the DC Source as an External Device

Internal DC Sources - ADC Measurements

Other Setup Measurements Topics

How to start the DC Source Control dialog

Using Hardkey/SoftTab/Softkey

Using a mouse

  1. Press Sweep > Source Control > DC Source....

  1. Click Stimulus.

  2. Select Sweep.

  3. Select Source Control.

  4. Select DC Source.

DC Source Control dialog box help  

Note: The 9-pin PWR I/O (Power I/O) D connector on the rear-panel replaces much of the functionality of the AUX I/O connector on older VNA models. The Power I/O voltages can be set using the following methods:

- CONTrol:AUXiliary:OUTPut:VOLTage or put_OutputVoltage Method (no GUI equivalent, global scoped, and settings not saved as part of the instrument state)
- SOURce:DC:START and SOURce:DC:STOP (DC Source dialog is the GUI equivalent, channel scoped, and settings saved as part of the instrument state)
- Interface Control dialog (no remote equivalent, channel scoped, and settings saved as part of the instrument state)

To avoid unexpected behavior, choose one method only to set the Power I/O voltages.

Name  Lists the names of the configured DC Sources. In the above image:

State  Set the state of the DC source.

  • ON  DC Source is always ON.

  • OFF DC source is always OFF.

  • Per Port  The Name selection for that DC source expands to allow an Port <n> / N/A setting for each VNA port. When the RF source for that port <n> is ON, then the DC source for port <n> is also ON. Select 'N/A' to turn the DC Source OFF for that port.

Start / Stop DC   Set the start and stop voltages of the DC source. The VNA will step the voltage of the DC source from Start to Stop in increments = (Stop - Start)/Number of data points.

Buttons

Limits  Click to start the DC Limits dialog.

Receiver Leveling  For future use.

 

DC Limits dialog box help  

Select the Minimum and Maximum voltages to which the specified DC sources can be set by the VNA. When the DC source level exceeds the limit, DC source is turned off and the measurement sweep stops.