User manual for the SR570 Low-Noise Current Preamplifier covering operation, specifications, programming, circuitry, calibration, and safety.
This document is the user manual for the SR570 Low-Noise Current Preamplifier, a precision instrument designed for measuring small currents. It provides comprehensive instructions on operating the front and rear panels, including controls for sensitivity, bias voltage, filters, and gain modes. The manual also details remote programming via RS-232 interface and includes a complete list of commands.
| Input Impedance | See Table 1 |
|---|---|
| Input Offset | ±1 pA to ±5 mA full scale adjustable dc offset current |
| Maximum Input | ±5 mA |
| Sensitivity | 1 pA/V to 1 mA/V in a 1-2-5 sequence |
| Frequency Response | Flat to ±0.5 dB up to 1 MHz (1 mA/V sensitivity) |
| Operating Temperatures | 0 to 50° C |
| Power | 100, 120, 220 or 240 VAC, 50/60 Hz from line |
| Dimensions | 8.3" x 3.5" x 13.0" |
| Weight | 15 lbs. (including batteries) |
Sensitivity = 1 µA/V, Invert = off, Input Offset = +1 pA, Bias = 0 V, Filters = none, Gain Mode = Low Noise.
A 1 Amp fuse is required for 100V/120V operation.
The internal batteries provide up to 15 hours of operation between charges.
Yes, the amplifier ground is fully floating, though amplifier and chassis grounds can be connected at the rear panel.