Changing the Start or the Stop Frequency requires turning off User Cal if the active Cal Type is Standard. Use Flex Cal to allow frequency range adjustments with User Cal on. Refer to Calibration Types.

Press the Start Frequency (F1) submenu key and use the virtual keypad to enter the value in the edit box. See Figure: Entering Frequency Setting.

Press one of the unit keys (GHz, MHz, kHz, or Hz) to apply the new value and close the edit box.

To exit without making a change, press Esc to cancel the entered value if applicable, and Esc again to close the edit box.

Press the Stop Frequency (F2) submenu key and use the keypad to enter the value in the edit box, then press one of the unit keys to apply.

Press the Start Distance (D1) submenu key and use the virtual keypad to enter the value in the edit box. See Figure: Entering Distance Setting.

Press one of the unit keys as appropriate to apply the entered value and close the edit box.

To exit without making a change, press Esc to cancel the entry, and Esc again to close the edit box.

Press the Stop Distance (D2) submenu key and use the keypad to enter the value in the edit box, then press one of the unit keys to apply.

Press the Units key to toggle distance units between meters and feet.

Opens the DTF Aid dialog box (Figure: DTF Aid). This interactive parameter box gives access to multiple specifiable measurement settings and displays maximum testing distance and resolution.

The Cable List submenu key opens a list of available cable specifications (see Figure: Cable List Selection).

When a cable is selected from this list, propagation velocity and cable loss are automatically set by the instrument. If the preselected values for propagation velocity or cable loss are changed, the analyzer will use “NONE” as the cable type.

Press the Cable Loss submenu key and use the keypad to enter the value in the edit box.

Press the unit key (dB/m or dB/ft) or press Enter to apply the value and close the edit box.

To exit without making a change, press Esc to cancel the entry, and Esc again to close the edit box.

Press the Prop Velocity submenu key and use the keypad to enter the applicable propagation velocity for the selected cable. Press Enter to apply the value and close the edit box.

To exit without making a change, press Esc to cancel the entry, and Esc again to close the edit box.

Opens the Windowing Menu.

Rectangular Windowing shows the highest side lobe levels (worst) and the greatest main lobe resolution (best).

Nominal Side Lobe Windowing shows less side lobe levels than Rectangular Windowing (good) but lower main lobe resolution (very good).

Low Side Lobe Windowing shows less side lobe levels than Nominal Windowing (very good) but lower main lobe resolution (good).

Minimum Side Lobe Windowing shows the lowest side lobe levels (best) but the least main lobe resolution (worst).