1) Perform a frequency
sweep to identify the
resonance of interest
Start with a low voltage,
e.g. 1 Vpp
Identify the frequency
limits and the desired
phase
Increase voltage to
improve resolution
Enter the tracking settings. In
this example, the target
resonance (low impedance) is
at 49.9 kHz with a phase of
zero degrees, therefore the
min frequency is set to 48
kHz, the max frequency is set
to frequency to 55 kHz, and
the initial frequency is set to
49.9kHz.
To track a resonance, set the
control gain to a positive
value, typically 1.
Enable the output.
Enable phase tracking.
Once the amplifier is
successfully tracking the
resonance, i.e. when the
measured phase equals the
desired phase, the voltage
2) Enter the frequency limits
and desired phase set point
(usually zero degrees)
To track an impedance
minima, set the control
gain to a positive value,
e.g. +1
To track an impedance
maxima, set the control
gain to a negative value,
e.g. -1
Enable the output
Enable phase tracking
Check the measured
phase is reaching the set
point