Documentation suggests that the 16MHz crystal trim process should be performed while measuring a 2.4GHz RF output. Yet it is possible to route the 16MHz oscillator to a PIO pin using PioSetAnaMonClk(pio_ana_clk_16M). Since the RF output on a given channel should be a fixed multiple of the 16MHz oscillator it seems to me that the crystal could be trimmed by monitoring the 16MHz signalon a PIO pin, rather than the RF signal.
Is this the case? If so, should the crystal be trimmed to exactly 16.0000MHz, or some slightly different frequency?
Regards - Charles