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SRS Stanford Research Systems SR860 Lock-In Amplifier 1 mHz to 500 kHz
Description of SRS Stanford Research Systems SR860 Lock-In Amplifier 1 mHz to 500 kHz
The new SR860 Lock-in Amplifier is the latest in a line of innovative lock-ins from SRS. With unparalleled analog performance, sophisticated new digital signal processing features, a thoroughly modern, intuitive user interface, and a wide range of computer connectivity options, the SR860 is the ideal choice for any synchronous detection application.
Key Features of SRS Stanford Research Systems SR860 Lock-In Amplifier
SRS SR860 Signal Inputs
Lock-in performance starts at the front end. The SR860 front end offers both state-of-the art voltage and current input amplifiers. The voltage input is a switchable single-ended/ differential JFET-pair amplifier with 2.5 nV/√Hz of noise at 1 kHz and under 10 nV/√Hz of noise at 10 Hz. The voltage input has a 10 MΩ input impedance and can be AC or DC coupled. Input connector shields can be connected to the instrument ground through a user selectable 10Ω (Ground) or 10 kΩ (Float) resistor.
The SR860’s built-in current amplifier represents a significant improvement over previous designs. The current input range is selectable from 1μA or 10 nA. The 1μA range has 400 kHz of bandwidth and 130 fA/√Hz of noise, while the 10 nA range offers 2 kHz of bandwidth and 13 fA/√Hz of noise.
While the built in voltage and current amplifiers are suitable for most applications, the SR860 is also compatible with the complete range of specialized pre-amplifiers offered by SRS. The SR550 (FET input), SR552 (BJT input), SR554 (transformer input), SR555 (120 kHz current amp), and SR556 (low-noise current amp) can all be powered directly from the SR860’s rear-panel preamp power port. The SRS website shows you how each of these preamps can be used to optimize measurements in a wide variety of experimental situations.
SRS SR860 Computer Connectivity
The SR860 comes standard with virtually every remote interface imaginable. GPIB (IEEE488.2) and RS-232 are of course provided, as well as USB (Test and Measurement Class) and Ethernet (VXI-11 and telnet). The SR860 hosts its own webserver allowing the instrument to be monitored and controlled remotely with just a browser. A front-panel USB port allows data and screen-shots to a USB flash drive. Data can be saved either as comma delimited files or MATLAB compatible .MAT files. Incorporating screen shots and data into reports or spreadsheets has never been easier.
Specification of SR860
| Signal Channel | |
| Voltage inputs | Single-ended or differential |
| Sensitivity (output scale) | 1 nV to 1V (voltage input) 1 fA to 1µA (current input) |
| Voltage input range | 10mV to 1V (peak) |
| Current input range | 1µA or 10 nA (peak) |
| Max input | 1V (peak) or 1µA (peak) |
| Input impedance | |
| Voltage input | 10MΩ+25 pF, AC or DC coupled |
| Current input | 1 kΩ or 100Ω to virtual ground |
| Gain accuracy | ±1% (100 kHz) |
| Signal amplitude must be less than 30% of input range | |
| Noise (rms) | 2.5 nV/√Hz at 1 kHz |
| (10 mV input range, typ.) | |
| Harmonic distortion | –80 dB (<100 kHz), –60 dB (>100 kHz) |
| CMRR | 90 dB to 1 kHz (DC coupled, 10 mV to 100 mV input range) |
| Dynamic reserve | 120 dB (typ) |
| Reference Channel | |
| Frequency range | 0.001Hz to 500 kHz |
| Timebase | 10MHz In/Out (phase locks the internal frequency to other SR860s) |
| Input impedance | 1MΩ or 50Ω |
| Phase setting resolution | 360/232 degrees |
| Phase noise | |
| Int. ref | <0.0001° rms at 1 kHz (100ms, 12 dB/oct) |
| Ext. ref (typ) | <0.001° rms at 1 kHz (100ms, 12 dB/oct) |
| Phase drift (typ) | <0.002°/°C below 20 kHz (DC coupled) |
| <0.02°/°C below 200 kHz | |
| <0.2°/°C below 2MHz | |
| Harmonic detection | Detect at N×f ref (N<99 and (N×f ref)<2MHz) |
| Dual F reference | Detect at f dual = |fint – fext| |
| Chopper reference | SR860 drives SR540 Chopper (via Aux Out 4) to lock the chopper to fint |
1.Can you ship order to Canada or Australia?
Yes,we can .We send orders worldwide.
2. What delivery method do you use? and delivery time?
We can ship by EMS,DHL,FedEx,UPS,TNT with tracking number. Usual delivery time is 4-7 workdays.
3. What is your payment term?
100% T/T payment before shipment.
4. How can I ask any other question?
You can contact us online or leave us messages below.
