A high performance, high capacitance gain, electric connector for data transfer applications. The test controller receives information on pins to be tested and first input test patterns constructed by input values and output expectation values for the pins to be tested. Such records may be formatted in various manners, processed andor analyzed on the mobileportable device, andor transmitted to another device for storage, processing andor analysis. The cell gap detecting unit detects the cell gap in the liquid crystal display panel. Here, the resistivity between the anode substrate and the spacer members is larger than the resistivity between the cathode substrate and the spacer members. On the other hand, as in the curves B and C, when load current final values I2B and I2C are greater than the load current initial value I1, it is determined that the gaseous communication state is abnormal.