ADC Measurements


The PNA is equipped with two ADC (Analog to Digital Converter) inputs on the rear-panel Power I/O connector (Pins 7 and 8). These ADC inputs can be used as measurement receivers and display measurements on the VNA screen.

Two DAC outputs are supplied on the Power I/O connector (Pins 3 and 4). These DAC outputs are controlled from the DC Source Control dialog.

Learn how to configure an external DC Source or DC Meter.

 

New Trace (ADC) dialog box help  

Note: Sweep speed slows dramatically when measuring more than two ADC receivers.

On the New Trace dialog, click the Receivers tab.

Activate - check any empty line to create a trace.

Numerator - select from the following:

  • AIx - Input x:  x is Input No.

  • AOSx - Output sense x:  x is Output No.

  • AIG - Analog ground  (PNA-X only)

Denominator - NOT available (ONLY unratioed measurements)

Source Port - The ADC receiver is measured when the specified source port is sweeping. Select None to always measure the ADC receiver.

 

 

 

 

ADC receiver traces are labeled as shown in the following images:

ADC Traces and other useful VNA functions

Although most VNA functions work with ADC traces, the following may be especially useful.

VNA Functions Not Supported