Signal Recovery 7270 DSP Lock-In Amplifier, 1 mHz to 250 kHz

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Category: Amplifiers - RF and Microwave Other

Signal Recovery 7270 DSP Lock-In Amplifier

The Signal Recovery 7270 Amplifier redefines the landscape for general-purpose digital signal processing (DSP) lock-in amplifiers. By leveraging advancements in technology since the introduction of the first DSP lock-in amplifiers in the early 1990s, this model incorporates the best features from the acclaimed 7265 and 7280 models. The new architecture not only enhances specifications but also results in a highly compact instrument, making it accessible without compromising performance.

Engineered for versatility, the 7270 operates across a frequency range of 1 mHz to 250 kHz, excelling in various measurement applications. It offers capabilities beyond conventional dual-phase lock-in detection, featuring our proprietary dual reference and dual harmonic detection. These cutting-edge features empower users to measure signals simultaneously at two distinct frequencies, increasing the efficiency of experimental setups.

The amplifier's spectral display mode showcases the power spectral density of the input signal, facilitating the identification of interference while selecting a reference frequency. Additionally, the tandem demodulation mode allows for innovative measurement techniques, such as the demodulation of an amplitude-modulated high carrier frequency signal, enabling further detection by a secondary set of demodulators tuned to the modulating frequency. This sophisticated functionality streamlines processes that traditionally required multiple instruments with physical connections.

Your data handling is enhanced with a main ADC sampling rate of 1 MSa/s, ensuring optimal performance even at short output filter time constants, ideal for scanned probe measurements. The internal curve buffer allows for swift data storage at 1 µs per point, facilitating direct capture of instrument outputs during rapid sampling. A generous buffer length of 100,000 sets of points equips users to record up to 100 ms seamlessly at the highest sampling rates. This functionality ensures the complete storage of X, Y, and auxiliary ADC1 values simultaneously, without compromising on data integrity.

Connectivity is a breeze with built-in RS232, USB, and Ethernet ports, which allow for comprehensive operation through a controlling computer. The instrument is complemented by an advanced software suite, Acquire, which simplifies the setup and execution of complex experiments, like frequency response measurements. For users looking to implement custom solutions, the ActiveX control and LabVIEW driver make programming straightforward and efficient.