Specifications

The QFM-Module comprises two components:

Controller:


Frequency Range
  •     5 kHz -    20 kHz (Tapping Mode in liquid)
  •   20 kHz - 100 kHz (Magnetic/Electrostatic Force Microscopy)
  • 100 kHz - 500 kHz (Tapping Mode in air)
Phase Shift
  • 360°  continously
Operational Modes
  • Constant Excitation Mode (CE-Mode)
  • Constant Excitation Mode with Q-Control
  • AM-Mode (Tapping Mode) with Q-Control
The Controller is available with general purpose BNC-type connectors or with special connectors compatible with SPMs either from Digital Instruments / Bruker (type NanoScope) or from Shimadzu:

Version Connection Connector Type
Standard Detector (in), Drive (in), Drive (out), Trigger (in),
Reference (out), RMS (out)		 BNC
DI / Bruker
 NanoScope Extender / Quadrex, Microscope
Reference (out)		 37-way D Sub
BNC
Shimadzu
 SPM Controller, SPM Stage
Reference (out)		 37-way D Sub
BNC

Frequency Detector:


Input Signal Range
  • Frequency:  5 kHz - 500 kHz
  • Amplitude: 0.3 Vp - 3.0 Vp
Sensitivity
  • ± 25 Hz/V
  • ± 75 Hz/V
  • ± 150 Hz/V
  • ± 250 Hz/V
Output Signal
  • analog
  • max. Amplitude: 10Vp
Misc.
  • up to 10kHz bandwidth
  • stand-alone (no computer needed)
  • fast auto tune function
  • no PLL


Please note: for operation with NanoScope scanning probe microscopes from Digital Instruments / Bruker these have to be equipped with an external NanoScope Extender or Quadrex module.

Compliance: CE
Power Supply: 100-240 Vac, 0.8 A, 47-63 Hz, IEC connector

Specifications are subject to change without notice or obligation.