Guildline Instruments 6622A-QHR Resistance DCC Bridge has been designed to provide better uncertainties and more operational capability in Direct Current Comparator (DCC) Resistance Bridges used with Quantum Hall Resistance Systems (i.e. QHRs).


  • Full 10 Digits (0.1 ppb) Display Resolution!
  • Built-in Screen Display Providing Complete Measurement Results and Graphs!
  • Change All Key parameters “on-the-fly” while the measurement is running!
  • Linearity: ± 0.005 ppm of Full Scale!
  • Measurement Accuracy: ± 0.02 ppm of Reading for 1 Ω to 10 kΩ Resistance Range!
  • Fully Programmable USB, IEEE 488.2!
  • Industry Standard SCPI Programming Command Language!
  • BridgeWorksTM Data Acquisition Software!
  • Unique Calibration Support Strategy!
  • Complete Automated QHR Measurement Systems Available!