AFM/SNOM
Control
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18 bit 400 kS/s ADC input channel
for AFM contact signal;
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| 14 bit 40 MS/s ADC input channel
for measurement of the amplitude dampening; |
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| DDS for oscillation excitation
/ frequency range 1 kHz .. 2 MHz; |
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| digital lock-in measurement of
amplitude and phase for AFM non-contact modes; |
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| phase locked loop (PLL) integrated
for frequency modulation; |
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| additional constant amplitude
feedback loop; |
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frequency sweep for measuring
amplitude and phase of resonance features (e.g.
tuning forks, non-contact mode cantilevers, SNOM fibers, ...); |
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| auto-approach functionality |
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STM Control |
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18 bit 400 kS/s
ADC input channel for measurement of tunneling current; |
| 16 bit 200 kS/s DAC output channel
for gap voltage; |
| offset and modulation input for
gap voltage with optional ASC550; |
| external amplifier (tunneling
current) with switchable amplification; |
| auto-approach functionality |
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CFM Control |
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| 18 bit 400 kS/s ADC input channel
for the CFM signal; |
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feedback mode possible;
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| pathmode for serial spectroscopy
measurements of selected points; |
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| external spectrometer control
via TTL; |
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| step scan functionality; |
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| auto-approach functionality |
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Feedback
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18 bit 200 kS/s DAC output channel
for z-actuator;
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| up to 28 bit in small range mode; |
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| programmable range limit for z-actuator; |
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| setpoint modulation™ for
optimal setting of feedback parameters; |
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| digital PI-algorithm; |
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| feedback on different input signals:
intensity (3 ADCs), PLL output frequency, |
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| non-contact mode Lock-in phase
and amplitude; |
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| features: auto-approach, active
xy-slope compensation, constant height mode |
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Scan Generation |
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| 2D xy scan generator with 4 MHz
pixel frequency; |
| 16 bit resolution full range mode
(16 bit offset + 16 bit scan); |
| up to 26 bit resolution in small
range mode; |
| features: hardware rotation, hardware
zoom, slewrate controlled movement, |
| slope compensation; |
| on request: analog drift compensation,
hardware cross talk compensation |
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Interfaces
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| scan voltage interface |
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3 x 0 .. 10 V, 16 (+16) bit 4 MHz,
with programmable tilt correction |
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| analog DAC output |
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2 x -10 .. +10 V, 16 bit 200 kS/s DAC |
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| analog inputs |
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3 x -10 .. +10 V, 18 bit 400 kS/s ADC
and prog. offset and gain / workpoint compensation
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| out- and input connector |
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adapter cable or connection to ASC550 |
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| digital interface (RS232) |
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connection to ANC150, for coarse approach |
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general purpose digital interfaces
accessible via ASC550 |
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optional 2 x 8 bit LVTTL/TLL I/O trigger interface,
optional prog. in / out sync, counter,
e.g. pixel-, line-, frame-clock |
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Dimensions
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chassis
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19" rack,
3 HE, 84 TE (ca. 13.5x45x34.5 cm)
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weight
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ca. 10 kg
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Electrical Supply
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power supply
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110 V / 220
V (switchable), 50 - 60 Hz
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| connector |
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IEC inlet |
| power consumption |
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max. 80 W |
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Other |
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| online data processing |
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averaging, offset correction,
line fit,
for- and backward filter, FFT |
| frequency calibration sweep |
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amplitude and phase response measurement |
| several spectroscopy modes |
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any input channel vs. z, DAC amplitude
or frequency
i.e. dI/dV, dI/dz, df/dz, df/dz, … |
| read back functionality |
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x-, y-, z-voltage, etc. on ASC500
iBox |
| data save formats |
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SPIP ™ compatible data format;
open CSV format for multi purpose data
processing (Origin, Sigma Plot, Excel, …) |
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