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
