Signal Recovery 7225 Dual Phase DSP Lock-In Amplifier
The Signal Recovery 7225 Dual Phase DSP Lock-In Amplifier is engineered to deliver exceptional performance tailored for researchers in need of reliable DSP demodulation capabilities. This advanced instrument excels at executing all standard measurements characteristic of a dual-phase lock-in amplifier, encompassing the in-phase and quadrature components, vector magnitude, phase angle, and noise of your input signal.
Equipped with two auxiliary ADC inputs, four DAC outputs, and eight output logic lines, the 7225 enables you to seamlessly integrate and monitor external signals pertinent to your experiments, such as temperature or pressure fluctuations. Additionally, it facilitates the generation of voltages for controlling or switching complementary equipment, ensuring comprehensive data management. The captured information from the ADCs is effortlessly combined with the lock-in amplifier's output data, which can be stored in a robust 32k point buffer memory for later transfer to a controlling computer.
Designed for user-friendliness, the Signal Recovery 7225 features an intuitive operation interface. All necessary adjustments can be made through a clearly laid out left-hand display panel, with the right panel dedicated to showcasing the selected instrument outputs. The unit’s automatic functions are activated with just two keypresses, minimizing the need for tedious manual adjustments and enhancing workflow efficiency.
Moreover, external control is streamlined through RS232 or GPIB interfaces, enabling easy communication via user-friendly mnemonic-style ASCII commands. A second RS232 port allows the connection of up to sixteen Signal Recovery 7225 or compatible instruments in a "daisy-chain" configuration, optimizing your experimental setup.
Features and Specifications
- Operation frequency range: 0.001 Hz to 120 kHz
- Extensive array of auxiliary inputs and outputs
- User-upgradeable firmware for enhanced functionality
- Support for voltage and current mode inputs
- Direct digital demodulation without down-conversion for superior accuracy
- Output time constants ranging from 10 µs to 100 ks
- Quartz crystal stabilized internal oscillator for precise timing
- Synchronous oscillator output to effectively reduce input offset
- Capability for harmonic measurements up to 32f
- Versatile applications, including but not limited to:
- Chopped light measurements
