The SIGNAL RECOVERY model 7265 uses the latest digital signal processing (DSP) technology toetend the operating capabilities of the lock-in amplifier to provide the researcher with a central measurmentand control facility. At the same time due consideration has been given to the needs of users wishingonmake a simple measurement quickly and easily.

Operating over a frequency range of 1 mHz to 250 kHz, the model 7265 offers full-scale voltage sensitivities down to 2 nV and current sensitivities to 2 fA. The unit has a choice of operating modes, signal recovery or vector voltmeter, for optimum measurement accuracy under different conditions, and the use of DSP techniques ensures exceptional performance.

The instrument performs all of the normal measurements of a dual phase lock-in amplifier, measuring the in-phase and quadrature components, vector magnitude, phase angle and noise of the input signal.

Several new modes of operation are also include giving the user greater levels of versatility than ever before, for example;

Virtual Reference
Under suitable conditions, this mode allows measurements to be made in the absence of a reference signal

Dual Reference