Stanford Research SR810 DSP Lock in Amp
SOLD OUT sold
amp219





Signal Channel
Voltage inputs Single-ended or differential
Sensitivity 2 nV to 1 V
Current input 106 or 108 V/A
Input impedance
Voltage 10 MΩ + 25 pF, AC or DC coupled
Current 1 kΩ to virtual ground
Gain accuracy ±1 % (±0.2 % typ.)

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°

Internal Oscillator
Range 1 mHz to 102 kHz
Frequency accuracy 25 ppm + 30 µHz
Frequency resolution 4½ digits or 0.1 mHz, whichever
is greater

Dimensions 17" × 5.25" × 19.5" (WHD)
Weight 23 lbs
Power cord