Patent ID: 6911831
Filing Date: 2005-06-28
Classification: G01R

Abstract:
1. A method for measurement in which a resistance used for current detection is shared by a current measurement device and a voltage source having current limiting function, a value of current output from the voltage source is measured by the current measurement device using the resistance, and a compliance and a current range of the current measurement device are automatically changed in accordance with the measured current value, said method comprising the steps of: setting the current range and a true compliance to user-specified values; setting the compliance for the current output from the voltage source to a prescribed value; measuring the value of current output from the voltage source using the current measurement apparatus; comparing the measured current with the current range and determining whether or not the current range is optimum; if the current range is found not to be optimum, changing the current range and performing another measurement of the current output from the voltage source with the newly changed current range, with the compliance being set at a value not exceeding the user-specified value and at an upper limit value in the newly changed current range; and if the current range is found optimum, having the current measurement device outputting the resulting current measurement value, then raising the current range and making a corresponding change in the compliance.