Technical Contact: Paul Dresselhaus
The Programmable Josephson voltage standard (PJVS) is an instrument that generates stable, quantum-accurate, direct-current (DC) voltages that are programmable over the range from -10 volts to +10 volts. The quantum accuracy of these voltages is derived from the Josephson Effect such that every superconducting Josephson junction in the PJVS circuit produces a voltage precisely proportional to the frequency of the applied microwave bias signal.
The PJVS with its quantum accurate dc voltages can serve as a primary voltage standard with accuracy of parts in 1010(determined through intercomparison with another quantum voltage standard) or as a stable, programmable source for precision measurements, metrology experiments or calibrations. For example, the PJVS can be used to calibrate Zener references (typically parts in 107 depending on the measurement instruments and Zener noise) as well as the amplitude-dependent gain and linearity of digital voltage meters.
The PJVS is also capable of generating stepwise-approximated waveforms or sine waves with a rise time between voltage steps that is less than 2 microseconds. The AC voltage of the stepwise waveforms do not have quantum accuracy because the transitions between the steps are bias dependent. A differential-sampling measurement technique with an integrating sampling digital voltmeter is used with the step-wise waveforms to calibrate the ac voltage of commercial voltage calibration sources at frequencies up to a few hundred hertz with a typical measurement uncertainty of parts in 107, depending on the phase and amplitude stability of the source.
Specifications Certificate (PDF format)
Standard Configurations:
The prices listed below are for the individual instrument and do not include costs related to the final measurement calibration performed before delivery or post-delivery installation and training. The related Calibration Service ID for the SRI is 53110S. To obtain a nist-quote for the instrument and calibration services, please contact Sales and Customer Service by phone at 301-975-2200 or email at srminfo@nist.gov.
6000e |
Cryo-cooled 10V PJVS, with water-cooled compressor |
$317,500 |
6000f |
Cryo-cooled 10V PJVS, with water-cooled compressor (US GSA Authorized) |
$291,600 |
6000h |
Cryo-cooled 10V PJVS, with water-cooled compressor, without synthesizer |
$270,700 |
6000i |
Cryo-cooled 10V PJVS, with air-cooled compressor |
$319,400 |
6000j |
Cryo-cooled 10V PJVS, with air-cooled compressor (US GSA Authorized) |
$293,400 |
6000l |
Cryo-cooled 10V PJVS, with air-cooled compressor, without synthesizer |
$272,500 |
6000m |
Cryopackaged 10V PJVS chip |
$51,600 |
6000n |
Cryopackaged 2V PJVS chip |
$26,800 |
6000o |
Upgrade existing NIST-installed Liquid-helium-cooled PJVS to Cryocooler with water-cooled compressor |
$116,100 |
6000p |
Upgrade existing NIST-installed Liquid-helium-cooled PJVS to Cryocooler with air-cooled compressor |
$118,000 |
6000q |
Liquid helium-cooled 10V PJVS without dewar |
$230,600 |
6000r |
Liquid helium-cooled 10V PJVS (US GSA Authorized) without dewar |
$204,600 |
6000t |
Liquid-helium-cooled 10V PJVS System, without synthesizer or dewar |
$183, 700 |
6000a | Liquid helium-cooled 10V PJVS | Superseded by SRI 6000q |
6000b | Liquid helium-cooled 10V PJVS (US GSA Authorized) | Superseded by SRI 6000r |
6000c | Liquid helium-cooled 10V PJVS, with compact microwave synthesizer | Superseded by SRI 6000t |
6000d | Liquid helium-cooled 10V PJVS, without synthesizer | Superseded by SRI 6000t |
6000g | Cryo-cooled 10V PJVS, with water-cooled compressor, with compact synthesizer | Superseded by SRI 6000h |
6000k | Cryo-cooled 10V PJVS, with air-cooled compressor, with compact synthesizer for traveling | Superseded by SRI 6000l |
6000s | Liquid-helium-cooled 10V PJVS System, compact synthesizer for traveling, without dewar | Superseded by SRI 6000t |
6000v | Cryopackaged 1V ACJVS chip | Superseded by SRI 6011 |
6000w | ACJVS Software | Superseded by SRI 6011 |
6000x | Liquid Helium Cryoprobe for ACJVS | Superseded by SRI 6011 |
6000u | Liquid-helium-cooled 10V PJVS System, without synthesizer, dewar, amplifier, cryoprobe, nanovoltmer, bias electronics and controller | Discontinued |
6000y | Low leakage current bias electronics and measurements UPGRADE | Discontinued |