What is EIA232? Likely Problems when Using an EIA232 Interface Pin Assignments Cable Wiring Examples (New!) Signal Definitions Signal Ground and Shield Primary Communications Channel Secondary Communications Channel Modem Status and Control Signals Transmitter and Receiver Timing Signals Channel Test Signals Electrical Standards Com mon Signal Ground Signal Characteristics Signal Timing Accepted Simplifications of the Standard Pin Description Index mon Signal Ground Signal Characteristics Signal Timing Accepted Simplifications of the Standard Pin Description Index