The SR810 Lock-In Amplifier and SR830 Lock-In Amplifier provide high performance at a reasonable cost. The SR830 simultaneously displays the magnitude and phase of a signal, while the SR810 displays magnitude only. Both instruments use digital signal processing (DSP) to replace the demodulators, output filters, and amplifiers found in conventional lock-ins. The SR810 and SR830 provide uncompromised performance with an operating range of 1 mHz to 102 kHz and 100 dB of drift-free dynamic reserve.

• 1 mHz to 102.4 kHz frequency range
• >100 dB dynamic reserve
• 5 ppm/°C stability
• 0.01 degree phase resolution
• Time constants from 10 µs to 30 ks
  (up to 24 dB/oct rolloff)
• Auto-gain, -phase, -reserve and -offset
• Synthesized reference source
• GPIB and RS-232 interfaces