155 AC/DC current and voltage source


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
  • USB and LAN connectivity (GPIB option)
  • 3-year standard warranty

*MeasureReady 155-AC

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.

First Look: 155 Precision Voltage Source and Current Source (6:56)

Try it risk-free with our 90-day money-back guarantee when ordering your 155 current and voltage source directly from Lake Shore Cryotronics.

Terms and conditions

  • This limited-time offer applies to the Purchaser’s first order for a MeasureReady 155 source.
  • Order must be placed directly through Lake Shore Cryotronics.
  • The 90-day period begins on the date the product ships from Lake Shore’s plant.
  • Prior to any MeasureReady 155 instrument being returned, the Purchaser must contact Lake Shore Cryotronics to obtain a Return Material Authorization (RMA).
  • The Purchaser is responsible for all return shipping and handling charges for any MeasureReady 155 product returned to Lake Shore Cryotronics (550 Tressler Drive, Westerville, OH 43082).
  • The returned MeasureReady 155 instrument must be shipped in its original package and include all contents provided in the original shipment.
  • No re-stocking fee will be assessed and a full refund of the original MeasureReady 155 purchase price (excluding original shipping and handling charges) will be credited to the Purchaser if materials are received by Lake Shore in first-class salable condition. Any additional expense required to return received material to first-class salable condition may be deducted from the credit authorized.
  • All other standard Terms and Conditions apply.

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 characterizing 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.

GPIB adapter available

More about the 155

Low noise performance

As easy to use as your smartphone