Electrical characteristic acquiring device
An object of the present disclosure is to acquire an open correction value in a good manner. In an electrical characteristic acquiring device according to the present disclosure, an open correction value, which is an electrical characteristic when the interval between a pair of probes is the length of a component to be measured on an electrode side, is calculated based on the measurement value of the electrical characteristic when the interval between the pair of probes is a set length, a set length, and the length of the component on the electrode side. Therefore, even when it is difficult to adjust the interval between the pair of probes, the open correction value can be accurately acquired. In addition, it is not necessary to measure the open correction value every time the component to be measured is changed, and the work efficiency can be improved accordingly.
1 . An electrical characteristic acquiring device that is mounted on a mounter configured to pick up a component supplied by a component supply device and mount the component on a circuit board, the device being for acquiring an electrical characteristic of the component by a pair of probes gripping the component, the device comprising:
a measurement section configured to measure the electrical characteristic of the component; and
a controller configured to
acquire an electrical characteristic as an open correction value by calculation when an interval between the pair of probes is equal to a length of the component on an electrode side, based on an electrical characteristic measured by the measurement section when the interval between the pair of probes is a predetermined set length, the set length, and the length of the component on the electrode side; and
correct the measured electrical characteristic which is the electrical characteristic of the component measured by the measurement section, with at least the acquired open correction value to acquire a final electrical characteristic of the component,
wherein the electrical characteristic is an impedance of the component.
2 . The electrical characteristic acquiring device according to claim 1 , wherein the controller acquires a floating admittance by calculation when the interval between the pair of probes is the length of the component on the electrode side as the open correction value, based on said floating admittance as the electrical characteristic measured by the measurement section when the interval between the pair of probes is the set length, the set length, and the length of the component on the electrode side.
3 . The electrical characteristic acquiring device according to claim 2 , further comprising:
a storage section configured to store in advance the set length and a reference floating admittance that is the floating admittance measured by the measurement section when the interval between the pair of probes is the set length.
4 . The electrical characteristic acquiring device according to claim 1 , further comprising:
an approach and separation device configured to cause the pair of probes to approach and separate away from each other, wherein
the approach and separation device includes a fluid pressure cylinder.
5 . The electrical characteristic acquiring device according to claim 1 , further comprising:
a holding table configured to move between a position between the pair of probes and a position deviated from the position between the pair of probes and hold the component, wherein
the measurement section measures the electrical characteristic in a state where the holding table is located at the position deviated from the position between the pair of probes when the interval between the pair of probes is the set length.