# DSP 7265 Lock-in Amplifier

class pymeasure.instruments.signalrecovery.DSP7265(resourceName, **kwargs)

  Bases: `Instrument`

  This is the class for the DSP 7265 lockin amplifier

  property adc1

    Reads the input value of ADC1 in Volts

  property adc2

    Reads the input value of ADC2 in Volts

  property dac1

    A floating point property that represents the output value on DAC1 in Volts. This property can be set.

  property dac2

    A floating point property that represents the output value on DAC2 in Volts. This property can be set.

  property dac3

    A floating point property that represents the output value on DAC3 in Volts. This property can be set.

  property dac4

    A floating point property that represents the output value on DAC4 in Volts. This property can be set.

  property frequency

    A floating point property that represents the lock-in frequency in Hz. This property can be set.

  property harmonic

    An integer property that represents the reference harmonic mode control, taking values from 1 to 65535. This property can be set.

  property id

    Reads the instrument identification

  property mag

    Reads the magnitude in Volts

  property phase

    A floating point property that represents the reference harmonic phase in degrees. This property can be set.

  property reference

    Controls the oscillator reference. Can be “internal”, “external rear” or “external front”

  property sensitivity

    A floating point property that controls the sensitivity range in Volts, which can take discrete values from 2 nV to 1 V. This property can be set.

  setDifferentialMode(lineFiltering=True)

    Sets lockin to differential mode, measuring A-B

  shutdown()

    Brings the instrument to a safe and stable state

  property slope

    A integer property that controls the filter slope in dB/octave, which can take the values 6, 12, 18, or 24 dB/octave. This property can be set.

  property time_constant

    A floating point property that controls the time constant in seconds, which takes values from 10 microseconds to 50,000 seconds. This property can be set.

  values(command)

    Rewrite the method because of extra character in return string.

  property voltage

    A floating point property that represents the voltage in Volts. This property can be set.

  property x

    Reads the X value in Volts

  property xy

    Reads both the X and Y values in Volts

  property y

    Reads the Y value in Volts