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Output Curve Edit

The tinySA Ultra has 4 output modes:

• Normal: Below 830 MHz. This mode outputs a sine wave.
• Direct: Between 830MHz and 1130MHz. This mode outputs a square wave.
• ADF: Between 1130MHz and 4400MHz. This mode has less frequency resolution and no FM modulation but it uses a clean square wave output.
• Mixer: Between 1130MHz and 5400MHz. This mode allows FM modulation, accurate frequency resolution and a wider output level range but it outputs, next to the intended output signal, other output signals.

The Output Curve Edit function assumes a selective power meter, such as another spectrum analyzer, is connected to the RF connector of the tinySA.
When the Output Curve Edit function is activated a pop-up can appear that requests "First calibrate 30MHz output". This is done using the CONFIG/MORE/LEVEL CORRECTION/OUTPUT LEVEL menu

When the 30MHz LEVEL entry is selected, the tinySA starts to generate a -30dBm output at 30MHz and a keypad appears to enter the actual measured output level. Once the OUTPUT LEVEL is calibrated the Output Curve Edit can be re-activated

A 3 page menu listing appears that lists for the correction curve all the frequencies with their respective level corrections.

After selecting an entry (such as 10MHz) the tinySA starts to output 10 MHz at about -35dBm and the resulting output can be measured with the connected selective power meter and the measured level can be entered.
Assuming the measured value was -35.4dBm, the curve edit page will show the 10MHz correction value being changed from -4.2dB to -3.8dB