1007 DC Millivolt Calibrator

Output

0 to 999.9 mV in 3 ranges:
0 to 999.9 mV in 0.1 mV steps
0 to 99.99 mV in 10 μV steps
0 to 9.999 mV in 1 μV steps

Accuracy

± 0.02 % of setting + ± 0.02 % of range + ± 1 µV.

Output Resistance

Less than 0.2 Ω on 1 V and 100 mV ranges. 1 Ω on 10 mV range.

Maximum Output Current

1 V and 100 mV ranges = 20 mA.
10 mV range = Up to short circuit value although it should be noted that loads of less than 1 kΩ will give greater than 0.1 % error.

Output Voltage Stability

Less than 60 ppm/°C.  Less than 100 ppm per 3 months (non-cumulative).

Output Polarity

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

Output Noise Level

Less than 30 ppm of full scale.

Reference Source

Precision bandgap reference diode, for stability and low temperature coefficient.

Maximum Overload

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

Null Balance Display

On a front panel meter, zero and sensitivity controls are provided:
Maximum sensitivity: ± 20 μV f.s.d. (3 μV resolution).
Minimum sensitivity: ± 200 mV f.s.d.
Input resistance: Greater than 1 MΩ.

Power Supply

6-AA size batteries. A battery level indicator shows when the batteries should be changed. An alternative power source is 6 NiMH cells of the same dimensions. These can be recharged via a socket on the top of the unit. The 6 rechargeable batteries and mains recharger are available as an optional extra.