User`s guide

MAC III Mode 11
Agilent 5500 SPM User’s Guide 189
the Q Control feedback loop. By default, Q Control
is turned Off.
Drive (%) Sets the amplitude of the Q Control phase-shifted
signal, stated as a percentage (0-100 %) of the
maximum available.
Phase Shift (°) Shifts the Q Control feedback signal with respect to
the input.
Sweep Selects the lock-in for which the frequency will be
swept on the AC Mode Tune window. Only one
lock-in can be swept at a time. Reverts to Lock-in 1
when AutoTune is selected in the AC Mode Tune
window. Use Manual Tune to sweep the other
lock-ins.