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Specifications
ASC500 SPM controller
upgrades
ASC500 Versions
Art. Nr.
full basic z
controller AFM
controller closed loop
scanning
1008958 1013326 1013331 1013332 1008999
Z Controller
type digital PI, anti wind-up • •
resolution 18 bit, up to 34 bit for small control range • •
bandwidth 50 kHz • •
control signal any internal signal channel • •
external modulation input, setpoint modulation, invertable • •
feedback gain and output polarity, P/I gains in physical units • •
features
Phase Locked Loop (PLL)
features 2 P/I controllers with graphical interface • •
frequency resolution 0.14 µHz • •
frequency range 1 kHz .. 500 kHz • •
Q Control
type electronic, phase controlled • •
efficiency decrease or increase of Q by factor 10 typical • •
display modes 2 frame views, 2 line views, easy generation of additional
frames possible • • options oversampling, autosave (png, ASCII, bcrf), line subtraction
line view with up to 16 subsequent lines • • selection tools frame alignment, frame centering, zoom function,
path mode, grid mode • • physical arrangement point/line/grid spectroscopy (up to 1024 x 1024 pixel) • • spectroscopy types z-spectroscopy, bias spectroscopy, soft spectroscopy
(all GUI parameters), dI/dV with internal Lock-In • (no z) averaging 25 µs up to 160 ms per data point • • parameters control loop off, signal limiter • • working principal 2nd pass with height offset or different scan parameter set • •
parameters height offset, wait time, slew rate, alternative DAC, alternative
setpoint • •
application MFM, SGM • •
Frame View
Spectroscopy
Second Pass Mode