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Time Electronics

1010 DC Voltage Calibrator

A highly stable and accurate mains or battery powered calibrator suitable for applications requiring a precision 
voltage source of low internal resistance. It has five ranges up to 10V with a resolution up to 0.01μV. 
 
The compact and robust design make it easily portable and well suited to laboratory, field and industrial use. 
A carry case is available to house the instrument for transport or storage.
 
Voltage outputs are set by selecting the range switch and dialling up the desired value on the thumbwheel 
switch. Output polarity may be selected using the normal/off/reverse switch.
 
The calibrator’s output resistance is typically 500mΩ on the 10V, 1V and 0.1V ranges. The maximum output 
current that can be drawn on these ranges is limited to 25mA maintaining specification. The lower ranges have 
an output resistance of 1Ω and will supply current up to 30mA.
 
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 0.01μV to 
9.9999V 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.
 
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. The battery condition monitored by a meter on the front panel.
Safety Terminals: Fitted as standard and fully compatible with 4mm shrouded plugs, as well as standard 
plugs, bare wires, and spade terminals.
 
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 10ppm per hour stability and very low noise 
levels are ideal for these types of applications.

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