supraVOLTcontrol is a complete 3 - channel microprocessor controlled 10V Josephson voltage standard (JVS) system devoloped in the Institute for Physical High Technology Jena (IPHT). It facilitates a variety of dc voltage calibrations and measuring functions:
- Calibration of secondary voltage standards
- Calibration of linearity and accuracy of voltmeters (dc)
in the voltage range of 0 to +/-10 V.

supraVOLTcontrol consists of the following components:
1. Cryoprobe with JVS circuit
2. Liquid He Dewar or Cryocooler (optional)
3. JVS Electronics unit
4. Microwave electronics unit includes: 75 GHz Gunn oscillator, isolator, directional coupler, mixer, voltage controlled attenuator
5. EIP source locking microwave counter
6. Keithley nanovoltmeter as Null detector
7. 3-channel Polarity reversal switch
8. Sensors for temperature, humidity and barometric pressure
9. Host computer with IEEE interface GPS 10 MHz reference frequency receiver (optional)