Stanford SR830 Lock-In Amplifier (0.001 Hz - 102.4 kHz)

Signal Channel:

Voltage inputs: Single-ended or differential

Sensitivity: 2 nV to 1 V

Current input: 106 or 108 V/A

Input impedance:

Voltage input: 10 MΩ + 25 pF, AC or DC coupled

Current input: 1 kΩ to virtual ground

Gain accuracy: ±1 % (±0.2 % typ.)

Noise:

6 nV/√Hz at 1 kHz

0.13 pA/√Hz at 1 kHz (106 V/A)

0.013 pA/√Hz at 100 Hz (108 V/A)

Reference Channel:

Frequency range: 0.001 Hz to 102.4 kHz

Reference input: TTL or sine (400 mVpp min.)

Input impedance: 1 MΩ, 25 pF

Phase resolution: 0.01° front panel, 0.008° through computer interfaces

Absolute phase error: <1°

Relative phase error: <0.001°

Orthogonality: 90° ± 0.001°

Phase noise:

Int. reference: Synthesized, <0.0001° rms at 1 kHz

Ext. reference: 0.005° rms at 1 kHz, 100 ms, 12 dB/oct

Internal Oscillator:

Range: 1 mHz to 102 kHz

Accuracy: 25 ppm + 30 µHz

Frequency resolution: 4½ digits or 0.1 mHz, whichever is greater

Distortion: -80 dBc (f <10 kHz), -70 dBc (f >10 kHz) at 1 Vrms

Amplitude:

0.004 to 5 Vrms into 10 kΩ (2 mV resolution),

50 Ω output impedance, 50 mA max. current into 50 Ω

Amplitude accuracy: 1 %

Amplitude stability: 50 ppm/°C

Inputs and Outputs:

CH1 output: ±10 V output of X, R, X-noise, Aux 1 or Aux 2.; Updated at 512 Hz.

CH2 output (SR830): ±10 V output of Y, Θ, Y-noise, Aux 3 or Aux 4. Updated at 512 Hz.

X, Y outputs (rear panel): In-phase and quadrature components (±10 V), updated at 256 kHz

Aux. A/D inputs: 4 BNC inputs, ±10 V, 1 mV resolution. Sampled at 512 Hz

Aux. D/A outputs: 4 BNC outputs, ±10 V, 1 mV resolution

Sine Out: Internal oscillator analog output

TTL Out: Internal oscillator TTL output

General:

Interfaces: IEEE-488.2 and RS-232 interfaces standard. All instrument functions can be controlled and read through IEEE-488.2 or RS-232 interfaces.

Power: 40 W, 100/120/220/240 VAC, 50/60 Hz

Dimensions: 17" × 5.25" × 19.5" (WHL)

Weight: 23 lbs.

Datasheet

Manual