A combination mortise and tenon jig has a body including a platform having an open section with first and second clamp legs on opposite sides for holding a workpiece therebetween with the workpiece part in which a mortise or tenon is to be cut facing toward the open section. In order to speed up the shift sequence, without additional design measures, as the input speed of the gear clutch of the target gear approaches its output speed, to complete the synchronization, the separator clutch is partially engaged and then disengaged again substantially simultaneously as the transmission brake is released. Also, because it does not have to consider step coverage based on the aspect ratio of openings, there is no limitation in the method of depositing a metal layer. When the receiver is the device under test and the transmitter is the tester, the transmitter is used to determine the amount of noise and power loss tolerated by the receiver. The master file has a plurality of records having a telephone number and a spatial key and is updated frequently.