Stanford Research SR570
The Stanford Research Systems SR570 is a low-noise current preamplifier designed for amplifying small AC currents. It features adjustable gain, bandwidth, and input impedance, making it suitable for various applications such as low-temperature physics, electrochemistry, and materials research.
- Model
- Stanford Research Systems SR570
- Calibration
- Available on request
- Price
- $2,479
- Status
- In stock
- RFQ ref
- SR570
This unit
The Stanford Research Systems SR570 is a low-noise current preamplifier engineered to amplify small AC currents with high precision across applications spanning low-temperature physics, electrochemistry, and materials research. It delivers 5 fA/√Hz input noise and supports maximum gain of 1 pA/V with bandwidth to 1 MHz, making it suitable for sensitive current measurements in demanding experimental environments.
Technical Specifications
- Input Noise: 5 fA/√Hz
- Maximum Gain: 1 pA/V
- Maximum Bandwidth: 1 MHz
- Maximum Input Current: ±5 mA
- Input Offset Current: Adjustable ±1 pA to ±1 mA in approximately 0.1% increments; on/off switchable
- Input DC Bias Voltage: Adjustable ±5 V
- Gain Range: 1 pA/V to 1 mA/V in 1-2-5 sequence with vernier adjustment (0.5% or 1% steps)
- Filter Cutoff Frequencies: 0.03 Hz to 1 MHz in 1-3-10 sequence
- AC Power Input: 100 V, 120 V, 220 V, or 240 V nominal (50 or 60 Hz)
- Battery Operation: Three rechargeable lead-acid batteries; up to 15 hours runtime with internal charger
Key Features
- Three gain allocation modes optimize performance: Low-Noise Mode places gain at the front end; High-Bandwidth Mode allocates gain to later stages; Low-Drift Mode reduces DC drift by a factor of 1000 using very low input-current op-amps
- Dual configurable first-order RC filters support low-pass, high-pass (6 or 12 dB/octave), and band-pass (6 dB/octave) configurations with filter reset for accelerated overload recovery
- Front-panel source capacitance compensation adjustable to correct frequency response effects
- Fully floating amplifier ground with amplifier and chassis ground available at rear connectors
- RS-232 interface (opto-isolated, 9600 baud, DCE format) enables remote control of all functions except power
- Two opto-isolated TTL inputs provide blanking (gain on/off control) and toggling (synchronous detection via gain sign inversion)
Typical Applications Low-temperature physics, electrochemistry, materials research, and experiments requiring sub-picoampere current sensitivity.
Compatibility & Integration RS-232 connectivity supports integration into automated measurement systems. Opto-isolation on all signal inputs ensures immunity to ground loops and external noise sources. Battery operation enables deployment in electromagnetically sensitive environments.
Specifications
| Parameter | Value |
|---|---|
| Frequency Range | DC to 1.00 MHz | Voltage / Current Range: ±40 V ground float, ±5 mA input, ±5 V bias |
Stanford Research Systems SR570 — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Stanford Research Systems SR570. Calibration covers calibration scope varies by instrument type: vacuum gauges are verified at multiple pressure points against NIST-traceable pressure standards; spectrophotometers at wavelength accuracy and photometric accuracy points; strain gauge indicators at bridge excitation accuracy and full-scale output accuracy; pH meters against certified buffer solutions at pH 4, 7, and 10.. All calibrations ship with a NIST-traceable certificate. Turnaround is typically 1–3 business days after receipt.
Common Stanford Research Systems SR570 faults: vacuum gauge filament failure (ionization gauges), spectrophotometer D2 lamp end-of-life, wavelength motor failure, strain indicator front-panel binding post corrosion, pH electrode conditioning failure. Most specialty laboratory instruments fail at their electromechanical interfaces first — vacuum gauge connectors and filament assemblies, spectrophotometer lamp housings and motor drives, strain indicator binding post corrosion. Component-level repair is standard; manufacturer support for legacy instruments is often limited, making third-party bench repair the practical path.
Stanford Research Systems SR570 price
This Stanford Research Systems SR570 is listed at $2,479. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Stanford Research Systems SR570 calibration cost
NIST-traceable calibration for the Stanford Research Systems SR570 is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Calibration for this instrument covers calibration scope varies by instrument type: vacuum gauges are verified at multiple pressure points against NIST-traceable pressure standards; spectrophotometers at wavelength accuracy and photometric accuracy points; strain gauge indicators at bridge excitation accuracy and full-scale output accuracy; pH meters against certified buffer solutions at pH 4, 7, and 10.. Turnaround is 1 to 3 business days after receipt. See full calibration details →
