Pin # Source Description Useage Notes A Common Chassis Ground B Common Signal Ground C DTE Request to Send Unbalanced, RS-232 voltage levels D DCE Clear to Send Unbalanced RS-232 voltage levels E DCE Data Set Ready Unbalanced RS-232 voltage levels F DCE Data Carrier Detect Unbalanced, RS-232 voltage levels H DTE Data Terminal Ready Unbalanced, RS-232 voltage levels J DCE Ring Indicator Unbalanced K - Local Test L - Unassigned M - Unassigned N - Unassigned P DTE Send Data A Balanced R DCE Receive Data A Balanced S DTE Send Data B Balanced T DCE Receive Data B Balanced U DTE Terminal Timing A Balanced V DCE Receive Timing A Balanced W DTE Terminal Timing B Balanced X DCE Receive Timing B Balanced Y DCE Send Timing A Balanced Z - Unassigned AA DCE Send Timing B Balanced BB - Unassigned CC - Unassigned DD - Unassigned EE - Unassigned FF - Unassigned HH - Unassigned JJ - Unassigned KK - Unassigned LL - Unassigned MM - Unassigned NN - Unassigned
M34 Connector
Data Communications for Businesses