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1030 Technical Manual
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4.3. Current Ranges
On the current ranges, the drive voltage available at the terminals is governed by the
battery voltage. Care should be taken not to exceed the 1030 voltage limit, as large
errors will result if the load/current product exceeds the 1030 8V drive capability.
This can easily be checked by either measuring the voltage across the 1030’s
terminals when under load, or by checking that R x I is less than 8 volts.
4.4. Output Resistance
The table below illustrates how the voltage appearing at the output terminals of the
calibrator will be affected by load resistance:
Ratio of Load Resistance to Calibrator
Error in selected
Output Resistance
Output Voltage
1,000:1
0.1%
100:1
1.0%
10:1
9.0%
1:1
50.0%
