Hard- and Software features
ASC500 SPM controller and Daisy software interface
Scan Engine
The ASC500 uses a dedicated hardware with a 4 MHz scan generator to
create the voltages necessary for the raster motion. The 16 bits of the xy
outputs are always automatically mapped to the actual scan field, yielding
a virtually unlimited bit resolution. Further features are:
• hardware rotation of the field of view
• hardware slope and drift compensation
• fully software integrated control
• LabVIEW™ interface
Z Controller
The z scanner output is controlled by a digital PI algorithm with a bandwidth of 50 kHz. The z output DAC has a resolution of 18 bit, yielding a
4 pm resolution on a 1 µm scan range.
• highly versatile; all signal channels can be used as control inputs
• physical units of PI gain
• setpoint modulation for PI fine tuning
• inversion of feedback gain
• inversion of output polarity
Closed Loop
The ASC500 now supports closed loop scanning at low temperatures as an
upgrade option. With different sensors closed loop positioning ranges up
to 5 mm are possible with extremely high resolution. This unique concept
provides not only compensation of scan non-linearities, but also full
repeatability/recovery of positions over the full coarse range with nm
resolution. Switching back and forth between different hot spots on the
complete sample has never been easier. The ASC500 is fully compatible
with the FPS3010/FPS 19“.
attoCONTROL
Electronic & Software Control Units
Microscopy
Controllers
PAGE 343