STANFORD RESEARCH SYSTEMS SR530 LOCK-IN AMPLIFIER 100 KHz - 01 GPIB SRS

The core of the SR530 is a precision analog sinewave multiplier. 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 SR530 uses clean sine-wave multipliers which are inherently free of unwanted harmonics.

• 0.5 Hz to 100 kHz frequency range
• Current and voltage inputs
• Up to 80 dB dynamic reserve

Option 01 - GPIB interface

System does not include rack mounts

I powered this on as shown in the pictures. Pictures are of the actual item for sale; condition is as shown. Please note that some of the LED indicators are quite dim as shown. Test setup shown is a reference signal of a 1KHz signal from an uncalibrated Stanford Research DS335 Synthesized Function Generator through an uncalibrated 1MOhm resistor and an uncalibrated variable resistor. First reading shown is 1.0Vp-p from the signal generator and the variable resistor set at 100KOhm with sensitivity set to 500mV as shown. On the second reading, the signal generator was set to 0.10Vp-p. On the following readings, the variable resistor was decimated (ie. 10KOhm, 1KOhm, 100Ohm, 10Ohm, and finally 1Ohm) with the sensitivity adjusted down to follow. Final reading is .05 Vp-p from the signal generator and the variable resistor set at 1Ohm with sensitivity set to 1µv as shown. System may require calibration depending on your intended use case. DS335 not included.