PROBLEM TO BE SOLVED: To provide an electronic endoscope connection system capable of preventing electrostatic breakdown caused starting from a short circuit-disconnection selection pin in disconnection state without performing complicated and large-scale work such as alteration of the hardware, and also to provide an electrostatic protective substrate sheet to be used therefor.SOLUTION: Between a ground connection pin (62GP, 72GP) and a short circuit-disconnection selection pin (62AP, 72DP) is arranged a lightning rod structure part to prevent electrostatic breakdown caused starting from the short circuit-disconnection selection pin (62AP, 72DP) when the short circuit-disconnection selection pin (62AP, 72DP) is in a disconnection state.SELECTED DRAWING: Figure 6COPYRIGHT: (C)2016,JPO&INPIT【課題】ハードウェアの変更等の複雑で大掛かりな処理を行うことなく、開放状態にある短絡-開放選択ピンを起点とする静電気破壊を防止することができる電子内視鏡接続システム及びこれに用いる静電気保護用の基板シートを得る。【解決手段】グランド接続ピン(62GP、72GP)と短絡-開放選択ピン(62AP、72DP)との間には、短絡-開放選択ピン(62AP、72DP)が開放状態にあるときに短絡-開放選択ピン(62AP、72DP)を起点とする静電気破壊を防止するための避雷針構造部が設けられている。【選択図】図6
