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