Geta is a common name of a board with extension wires which is used when diagnosing and analyzing a failure through processes of drawing a specific board suspected to have a failure among multiple printed-circuit boards incorporated in a device, attaching a connector to a same-sized printed-circuit board as such circuit board, establishing a one-to-one extension wire between the device and the connector, and observing the performance of a circuit with an oscilloscope or analog multimeter.
多数のプリント基板が組み込まれた装置で故障と疑われる特定の基板を引き出し、その基板と同一サイズのものに接栓（せっせん）を付け、装置との接栓間に一対一の延長線を設け、オシロスコープやアナログマルチメータなどで回路の動作を観測し故障診断分析を行う時に使用する延長線基板の俗称。