The Measure menu can be changed between two different settings, Field or VNA. For users already familiar with the Anritsu Site Master measurement nomenclature, the Field measurements view setting will likely be more comfortable. The VNA measurements view setting is designed to more closely resemble the menus of a bench top VNA, and allows access to more advanced features of the Vector Network Analyzer.

The VNA measurements view is the default presentation throughout this manual. This chapter, however, provides the subset of measurements and menus that are specific to the Field measurements view.

Change between the Field measurements view and the VNA measurements view by pressing the Shift key followed by the System (8) key, and then by pressing the Applications Options soft key (submenu key). Press the Meas Menu soft key to toggle between Field and VNA.

Refer to section Touch Screen Trace Features.

Refer to section Markers on a Touch Screen.

Before conducting a measurement, ensure that the instrument is set to Field measurements view. Then select a measurement type, specify the frequency range and sweep parameters (such as number of data points), and perform a calibration. These operations are described further in the following paragraphs. This chapter describes the Field measurements view. Note that the VNA measurements view is the default measurement display type that is described in the other chapters of this measurement guide.

You can save a Setup with calibration (refer to the file management instructions in the user guide for your instrument). In the Save menu, press the Change Type soft key to open the Select File Type list box. Scroll to Setup (with CAL) and press the Enter key (refer to the file management instructions in the user guide for your instrument).

When you recall a setup, the calibration remains valid if instrument conditions (such as temperature) remain within the calibration tolerance.

The Measure Menu – Single is accessed by pressing the Measure function hard key (main menu key) below the display or by pressing the Shift key followed by the Measure (4) key. All available VNA measurement types are found in the Graph Type Selector list box (which is opened by pressing the Measurement Type soft key in the Measure menu). DTF Return Loss and DTF VSWR measurements are standard.

Regardless of the type of measurement that is being made, the frequency range for the desired measurement must be set before calibrating the instrument. Increasing the frequency after calibrating the instrument will invalidate the calibration. Decreasing the frequency does not invalidate the calibration. Press the Freq/Dist function hard key (below the sweep window) to display the Freq Menu (Frequency‑Based).

Set the Start Frequency by pressing Start Freq soft key and using the keypad, the arrow keys, or the rotary knob to set a value in Hz, kHz, MHz, or GHz for the desired frequency. Set the Stop Frequency by pressing the Stop Freq soft key.

Press the Sweep function hard key (main menu key), and then press the Data Points soft key (submenu key). Use the rotary knob, the arrow keys, or the numeric keypad. When you use the numeric keypad to enter a number, an Enter soft key appears in the menu. You can also press the keypad Enter key. You can set any number of data points from 2 up to 4001.

For accurate results, the instrument must be calibrated at ambient temperature after allowing for warm up time (approximately 15 minutes) and before making any measurements. Refer to Calibration Considerations.

The Existing Calibration Information list box is shown in Figure: Existing Calibration Information List Box.

After calibrating, you can reduce the frequency span or reduce the number of data points without invalidating the calibration (refer to Calibration Data and Indications).