155 AC/DC Current and Voltage Source

From precision thermometry to advanced measurement

Lake Shore has advanced science by providing cryogenic temperature and magnetic instrumentation to researchers and engineers for decades. At the heart of these instruments are special low-noise current and voltage sources that excite the attached sensors. This has led us to develop ultra-low noise voltage and current sources as standalone instruments for a wider range of demanding applications. The all-new design of the MeasureReady 155 VI source offers premium performance, easy operation, and modern convenience, backed by Lake Shore’s quality and service.

DC-low noise performance without compromising AC bandwidth

The low-noise MeasureReady™ 155 precision current and voltage source combines premium performance with unprecedented simplicity for materials scientists and engineers requiring a precise source of voltage and current.

With extensive experience in low-noise instrumentation for research, Lake Shore has leveraged the latest electronic technologies to reduce in-band and out-of-band noise floors for the MeasureReady 155 source to levels previously only possible using add-on filters. The result is a combination AC/DC current and voltage source that is well-suited to the challenges of characterising sensitive materials and devices, where lower excitation signals are needed and minimum injection of noise into the measurement is required.

While sophisticated on the inside, the 155 is uncommonly straightforward to operate. Leading product designers observe that simple is much harder to accomplish than complex — just putting a touchscreen on a complex product doesn’t make it simpler. Lake Shore’s modern, user-focused design for the MeasureReady 155 presents an uncluttered and intuitive interface that instantly feels familiar and natural to anybody who owns a smartphone.

More about the 155
Low noise performance
As easy to use as a smartphone

MeasureReady™ Low-Noise DC and AC/DC 155 Voltage and Current Source Features

  • Low RMS noise: from 200 nV (10 mV)/7 pA (1 µA)
  • Bipolar, 4-quadrant power source
  • DC and AC modes supported up to 100 kHz*
  • Full scale ranges—voltage: 10 mV to 100 V, current: 1 µA to 100 mA
  • 0.001% programming resolution (from 100 nV/10 pA)
  • In-phase reference output for use with a lock-in amplifier (155-AC only)
  • Manual and autorange function
  • Front and rear input connectors
  • Touchscreen user interface
  • Wi-Fi, USB, and LAN connectivity (GPIB option)
  • 3-year standard warranty


*MeasureReady 155-AC




+44 (0)1372 378822


+44 (0)1372 378822


Supplier Info

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155 Specifications

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