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Lock in Amplifiers - 7218 Lock-In Amplifiers

SR510 and SR530  Analog lock-in amplifiers

SR530 Lock-In Amplifier Sine Wave Mixing The SR510 and SR530 have differential inputs with 7 nV/

SR510 & SR530 Lock-In Amplifiers

√ Hz of input noise and 100 M Ω input impedance. Theinput can be configured as a voltage input, or as a current input with 10 The core of the SR510/SR530 is a precision analog sine-wavemultiplier. Lock-ins use a multiplier (demodulator) to translate the input signal (at the reference frequency) down to DC where it can be filtered and amplified. Many lock-ins use square wave multipliers which introduce spurious harmonic responses. The SR510/SR530 use clean sine-wave multiplierswhich are inherently free of unwanted harmonics. Signal Input

· 0.5 Hz to 100 kHz frequency range· Current and voltage inputs · Up to 80 dB dynamic reserve · Tracking band-pass and line filters · Internal reference oscillator · Four ADC inputs, two DAC outputs · GPIB and RS-232 interfaces · SR510 ... $2495

The SR510 and SR530 are analog lock-in amplifiers whichcan measure AC signals as small as nanovolts in the presence of much larger noise levels. Both the single phase SR510 and the dual phase SR530 have low-noise voltage and current inputs, high dynamic reserve, two stages of time constants, and an internal oscillator. In addition, both lock-ins come equipped with a variety of features designed to make them simple to use.
(U.S. list) 6 V/Again and an input impedance of 1 k Ω tovirtual ground. Full-scale sensitivities from 500 mVdown to 100 nVare available.Three input prefilters can be selected. The first is a line notchfilter providing 50 dB of rejection at the line frequency. The

· SR530 ... $2995

(U.S. list)

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