7124 Precision Lock-in Amplifier

Digital noiseless lock-in amplifier


The 7124 Synchronous Detection Amplifier combines the advantages of 'old' analog instruments such as the PAR124 and the best digital instruments.

Supplier: Signal Recovery


  • The only lock-in isolated from digital noise
  • Battery operated
  • Suitable for measurement at very low temperatures
  • Remove ground loops

SIGNAL RECOVERY is therefore proud to introduce the model 7124 precision lock-in amplifier, which is particularly suited to such work. It uses a unique analog fiber optic link to interconnect a remote connection unit (RCU), to which the experiment is connected, and a main instrument console. In normal operation there are no digital clock signals within the RCU, and so it can emit no switching noise.


  • Frequency of use from 0.5Hz to 150KHz
  • Minimum sensitivity 2nV to 1V and 2fA to 1uA
  • Time constants of output filters from 10 μs to 100 ks
  • Digital oscillator adjustable in amplitude and frequencies
  • USB2 and Ethernet interfaces

Product applications

  • Scanned probe microscopy
  • Optical mesurments
  • Low temperature mesurements
  • Impedance mesurements
  • Atomic force microscopie