1010 DC Voltage Calibrator

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1010 DC Voltage Calibrator

A highly stable and accurate mains or battery powered DC V calibrator suitable for applications requiring a precision voltage source of low internal resistance. It has five ranges up to 10 V with a resolution up to 0.01 μV. The compact and robust design make it easily portable and well suited to laboratory, field and industrial use.

Voltage outputs are set by selecting the range switch and dialling up the desired value on the thumbwheel switch. Output polarity can be selected using the normal/off/reverse switch. The calibrator output resistance is typically 500 mΩ on the 10 V, 1 V and 0.1 V ranges. The maximum output current that can be drawn on these ranges is limited to 25 mA maintaining specification. The lower ranges have an output resistance of 1 Ω and will supply current up to 30 mA.

A precision zener diode is used as a reference source that provides an input to a F.E.T. chopper amplifier system operating in a feedback stabilised mode. The gain value is determined by a set of precision metal film resistors, selected by the 5-decade thumbwheel switch on the front panel.

The output voltage is variable from 0.01 μV to 9.9999 V in 5 ranges. For complete reliability, the calibrator range switch employs two contacts in parallel for each position in case one contact fails, ensuring the calibrator will still function correctly.


  • 0.01 μV to 10 V in 5 ranges 
  • Accuracy 0.02 %
  • 10 ppm/hr stability 
  • 30 mA output current 
  • Safety terminals 
  • Battery or mains operation 
  • 40 hours typical use between charges 
  • Battery level indicator 
  • Optional carry case
Safety Terminals

Safety Terminals

The 1010 output is via safety terminals that are compatible with standard plugs, 4 mm shrouded plugs, bare wires, and spade connectors.

These terminals are specifically designed with safety features including limited opening distance and a raised flange around the metal connection surface. This ensures that the clearances are sufficient to make the exposed metal parts touch-proof.

Portable Operation

Portable Operation

The 1010 can be powered from mains supply or by the internal rechargeable battery pack. When the calibrator is plugged into the mains supply the internal batteries will automatically start to recharge.

If unplugged from the mains during operation the internal batteries will continue to power the instrument. Full charge allows 40 hours typical use. An LED indicator on the front panel displays the battery condition. A carry case is available to house the instrument for transport or storage.

1010 Applications

The 1010 can be used for calibration, linearity, and gains stability measurements on DC amplifiers, digital and electronic voltmeters, data loggers and chart recorders. It’s high 10 ppm per hour stability and very low noise levels are ideal for these types of applications.

The 1010 has the advantage of requiring no standardisation and being able to supply much higher output currents without loss of accuracy. Long term stability is inherent since standardisation is not required. The instrument is designed for simple operation and reliability.


Technical Specification
General Specification


File Name File Size Language Format

1010 DC Voltage Calibrator Data Sheet

500 kB


1010 DC Voltage Calibrator User Manual

920 kB



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1010 DC Voltage Calibrator

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