Lock-in amplifier

7270 DSP lock-in amplifier

The 7270 is the latest model of digital universal lock-in amplifier with dual phase demodulation. As the successor to the tried and tested 7265, it combines all the development stages of DSP lock-in technology since the early 1990s with state-of-the-art operating and evaluation technology.

The 7270 operates in the frequency range from 1 mHz to 250 kHz. Both voltage and current signals can be demodulated.

  • The ADC sampling rate is 1 MHz
  • There is a Dual Reference, a Dual Harmonic and a Virtual Reference operating mode.
  • The device is operated via a large color display and a keypad.
  • Remote operation is provided with a user-friendly software. The PC can be connected via USB, Ethernet or RS232.
  • The device contains a precise DDS sine oscillator with adjustable amplitude and frequency.
  • The oscillator output can be modulated in both amplitude and frequency.
  • It can be demodulated up to the 127th harmonic.
  • There are free LabView drivers available.

 

7230 DSP lock-in amplifier

The 7230 marks the beginning of a new concept of universal digital lock-in amplifiers with dual phase demodulation.

As the little brother of the 7270, it has almost the same technical specifications as the 7270 but at a significantly lower price.

All control buttons and the display on the device have been removed and replaced by easy-to-use, browser-based control panels that can be opened from any PC or tablet/smartphone. This remote function allows the 7230 to be fully controlled and read out not only in the laboratory but from any location, since the PC is in the same network. USB, Ethernet or RS232 can be used as interfaces.

The 7230 operates in the frequency range from 1 mHz to 120 kHz. Both voltage and current signals can be demodulated.

  • The ADC sampling rate is 1 MHz.
  • There is a Dual Reference, a Dual Harmonic and a Virtual Reference operating mode.
  • The device contains a precise DDS sine oscillator with adjustable amplitude and frequency.
  • The oscillator output can be modulated in both amplitude and frequency.
  • It can be demodulated up to the 127th harmonic.
  • There are free LabView drivers available.