Manual Tuning - FlexRadio Systems Tuner Genius XL User Manual

7.3.2 Manual Tuning

While the Tuner Genius XL's default mode of operation is to create tuning solutions automatically, manual
tuning is possible. Three front panel controls allow manual tuning, accomplished by turning one of three knobs
found along the bottom edge of the front panel. The first knob selects the first capacitor (C1) in the PI network,
the second knob selects the inductor (L1), and the third knob selects the second capacitor (C2).
Procedure:

Apply a tuning signal at the desired frequency.

Observe the SWR value in the display.

Press the leftmost knob to select manual tuning. The "Manual Tuning" message appears on the front
panel display.

Adjust the knob to select the first capacitance.

Adjust the middle knob to select the inductance.

Adjust the rightmost knob to select the final capacitance.

Press the leftmost knob to save the result for later use.
In many cases, two or more values of the inductance may produce minimum SWR values. The general rule‐of‐
thumb for this case is to select the smallest inductance (smallest "L value" on the display).
The Tuner Genius XL Windows Utility provides similar manual tuning controls. First, click on the leftmost
"knob" in the display, use the mouse wheel to adjust the value up and down. Continue with the second and
third "knobs," then click on the first "knob" to save the tuning solution. See section 8.4.4, Manual Tuning
Controls, for more information.
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Page 50 of 72
7 June 2021(FW:0.9.12, Utility: 0.9.12)