1010 DC Voltage Calibrator

0 to 9.9999 V in 5 ranges:
0 to 9.9999 V in 100 µV steps
0 to 999.99 mV in 10 µV steps
0 to 99.999 mV in 1 µV steps
0 to 9.9999 mV in 0.1 µV steps
0 to 999.99 µV in 0.01 µV steps 

Accuracy

Output Resistance

10 V, 1 V, and 100 mV ranges = less than 0.1 Ω (typically 0.05 Ω). 10 mV and 1 mV ranges = 1 Ω

Maximum Output Current

10 V, 1 V and 100 mV ranges = 25 mA
10 mV and 1 mV ranges = up to short circuit value 30 mA, although it should be noted that loads of greater than 1 kΩ will give greater than 0.1 % error

Output Voltage Stability

Less than 30 ppm/°C (0 to +50 °C). Less than 5 ppm/V variation in supply voltage. Less than 75 ppm/year. Less than 10 ppm/hour at constant temperature

Output Polarity

Positive or negative switch selected.  A centre ‘off’ position is also provided

Output Noise Level

10 V, 1 V, and 100 mV ranges = less than 10 ppm of setting ± 2 µV (0 to 10 Hz)
10 mV and 1 mV ranges = less than ± 0.05 µV (0 to 10 Hz)

Reference Sources

Precision zener diode selected after a special ageing process for a temperature coefficient better than 5 ppm/°C and stability better than 10 ppm/month, non-cumulative

Maximum Overload

The instrument can withstand continuous short circuit on the output for all ranges

Power Supply

Time Electronics power unit type PU2 which is housed in the rear of the 1010. The PU2 will power the 1010 direct from the mains or an internal rechargeable battery. The battery is automatically charged when mains power is connected. Access to the power supply is from the back of instrument.

Battery Level Indicator

A front panel LED provides a indication of the battery condition.