Signal Recovery 7230 General Purpose DSP Lock-In Amplifier

The Signal Recovery 7230 general purpose DSP lock-in amplifier provides excellent signal recovery performance from a range of 1 MHz to 250kHz. The 7230 offers much more than just dual phase lock-in detection at the reference frequency of an applied signal. This lock-in amplifier includes dual reference and dual harmonic detection, which allow signals at two different frequencies to be measured simultaneously, and tandem demodulation. The Signal Recovery 7230 also includes virtual reference mode, allowing reference-free measurement of suitable signals.

The Signal Recovery 7230 provides a virtual front panel via a web browser which gives it a low profile for integrating into larger system configurations. This has been achieved by easy-to-use control panels that can be operated from any computer. There is no need to be in front of the instrument to operate it - now you can set up your experiment in the lab but return to the office while it runs, monitoring what is happening via your computer. And if you need to make a change to a setting then it’s as easy as clicking a button on a web page.

Product Info Related Products

Voltage Input
Modes	A only, -B only or Differential (A-B)
Frequency Response	1 mHz < F < 120 or 250 kHz*
Full-scale Sensitivity	10 nV to 1 V in a 1-2-5 sequence (e.g. 10 nV, 20 nV, 50 nV, 100 nV, etc.)
Impedance - FET input	10 MΩ // 25 pF, AC or DC coupled
Impedance - Bipolar input	10 kΩ // 25 pF, input must be DC coupled
Max safe input	±12.0 V
Voltage Noise - FET input	5 nV/√Hz @ 1 kHz
Voltage Noise - Bipolar input	2 nV/√Hz @ 1 kHz
C.M.R.R.	> 100 dB @ 1 kHz degrading by no more than 6 dB/octave with increasing frequency
Gain Accuracy	±0.5% typ, ±1.0% max
Distortion	-90 dB THD (60 dB AC gain, 1 kHz)
General
Power Requirements	Via external model PS0110 universal power supply
Voltage	100 - 240 VAC
Frequency	47 - 63 Hz
Power	40 VA max
Dimensions
Width	Width 15½" (390 mm)
Depth	Depth 10" (250 mm)
Height
With feet	With feet 3" (75 mm)
Without feet	Without feet 2½" (64 mm)
Weight	Weight 6.6 lb (3.0 kg)

Built-in web pages for control from any computer on the same network
1 mHz to 120 kHz (250 kHz with 7230/99 option) operating frequency range
Voltage and current mode inputs
1.0 MHz main ADC sampling rate
10 μs to 100 ks output filter time constants
Precision DDS sinewave oscillator with adjustable amplitude and frequency
Oscillator output can be amplitude or frequency modulated
Harmonic measurements up to 127 × F
Dual Reference, Dual Harmonic and Virtual Reference operating modes
Auxiliary analog and digital inputs and outputs
Internal data buffer for recording instrument outputs at rates down to 1 μs per point
Ethernet, USB, and RS232 computer interfaces
Free LabVIEW driver