The measurement of weak signals in a noisy environment is a typical task for optical metrology. This task can be accomplished by synchronous detection by means of the lock-in technology. Due to the rapid development in optoelectronics, multichannel systems are common in a wide range of the application fields. This leads to an increasing demand for scalable multichannel amplification systems. Commercially available lock-in amplifiers
offer a broad spectrum of applications, but most of them have a limited number of detection channels.
Fraunhofer IOF offers a cost-efficient modular multichannel lock-in amplifier with a scalable number of detection channels. Up to 16 multichannel modules (with 8 detection channels each) can be connected to the parallel bus system. Measurement parameters are set up on the front panel and transferred from the control module to the 8-channel assembly modules.
|- Sensitivity:||5 mV - 500 mV|
|- Time constant:||3 ms - 200 ms|
|- SNR:||> 40 dB|
|- Dynamic reserve:||60 dB|
|- Chopper input range:||1 kHz - 5 kHz|
|- Number of channels:||scalable up to 128 channels (16 8-channel modules)|
|- Housing size: