Model 7280 Dual Phase Wide Bandwidth DSP Lock-in Amplifier – Precision Signal Recovery Across Broad Frequencies
The Model 7280 Dual Phase Wide Bandwidth DSP Lock-in Amplifier is a high-performance instrument designed for precise signal detection and measurement across a wide frequency range. Operating from 0.5 Hz to 2 MHz, this digital lock-in amplifier employs direct digital demodulation without down-conversion, ensuring accurate and drift-free performance. Its 7.5 MHz main ADC sampling rate and output time constants ranging from 1 µs to 100 ks make it ideal for recovering fast-changing signals in various applications.
Equipped with dual reference, dual harmonic, and virtual reference modes, the 7280 offers versatility in complex signal environments. The spectral display mode aids in reference frequency selection, enhancing user efficiency. Its large electroluminescent display panel, combined with intuitive menu navigation and keypad controls, provides a user-friendly interface for real-time monitoring and adjustments.
The 7280 supports both voltage and current input modes, with full-scale sensitivities ranging from 10 nV to 1 V for voltage and 10 fA to 100 µA for current, depending on the selected mode. Its high dynamic reserve (>100 dB) and low noise performance (5 nV/√Hz at 1 kHz for voltage) ensure accurate measurements even in noisy environments.
Connectivity options include GPIB and RS232 interfaces for remote control, with software support available through LabVIEW drivers and Acquire™ data acquisition software. This makes the 7280 suitable for integration into automated systems and complex experimental setups.
Ideal for applications such as scanned probe microscopy, optical measurements, audio studies, AC impedance studies, and atomic force microscopy, the Model 7280 Dual Phase Wide Bandwidth DSP Lock-in Amplifier delivers exceptional performance and flexibility for advanced research and industrial applications.
The model 7280 DSP Lock-in Amplifier is an exceptionally versatile instrument with outstanding performance. With direct digital demodulation over an operating frequency extending up to 2.0 MHz, output filter time constants down to 1 µs and a main ADC sampling rate of 7.5 MHz it is ideal for recovering fast changing signals. But unlike some other high frequency lock-ins, it also works in the traditional audio frequency band.
Specification:
- 0.5 Hz to 2 MHz operation
- Direct digital demodulation without down conversion
- 7.5 MHz main ADC sampling Rate
- 1 µs to 100 ks output time Constants
- Dual Reference, Dual Harmonic and Virtual Reference modes
- Spectral display mode
- Scanned probe microscopy
- Optical measurements
- Audio studies
- AC impedance studies
- Atomic force micorscopy
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