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I am just looking in the datasheet of the Keithley DMM7510 (attached only the two relevant pages) and in the table on page 10 a 200mV burden voltage is indicated for the 100mA range. This would indicate a shunt resistance of some 2 Ohm. However, in the last table on page 11, an Effective Internal Sunt Value for the same range is indicated as 0.1Ohm. I am not sure I understand the discrepancy, can somebody explain?
Quote from: brumbarchris on March 31, 2019, 07:02:36 pmI am just looking in the datasheet of the Keithley DMM7510 (attached only the two relevant pages) and in the table on page 10 a 200mV burden voltage is indicated for the 100mA range. This would indicate a shunt resistance of some 2 Ohm. However, in the last table on page 11, an Effective Internal Sunt Value for the same range is indicated as 0.1Ohm. I am not sure I understand the discrepancy, can somebody explain?The difference comes from the path resistance. The sense resistor itself is 0.1 ohms but there are switches and other hardware between the signal and that sense resistor that add to the burden voltage.