## AK306-2-R Electronic Part Overview The **AK306-2-R** is a specific electronic cable assembly, typically categorized as a **Computer I/O Cable**. It is widely used for connecting peripheral devices to computers, specifically focusing on older standards like serial communication. --- ### Technical Specifications The following table outlines the primary technical characteristics of the AK306-2-R: | Feature | Specification | | :--- | :--- | | **Connector A** | D-Sub 9-Pin (DB9) Female | | **Connector B** | D-Sub 9-Pin (DB9) Female | | **Length** | 2.0 Meters (approx. 6.6 feet) | | **Wiring Configuration** | Null Modem (Crossover) | | **Shielding** | Foil Shielded (Al-Mylar) | | **Jacket Material** | PVC (Polyvinyl Chloride) | | **Color** | Beige / Gray | | **RoHS Status** | Compliant | --- ### Key Features and Functionality 1. **Null Modem Configuration**: Unlike a standard "straight-through" cable, the AK306-2-R uses a crossover pinout. This allows two Data Terminal Equipment (DTE) devices (like two PCs) to communicate directly without a modem in between. 2. **EMI/RFI Protection**: The internal shielding prevents electromagnetic interference and radio frequency interference, ensuring data integrity over the 2-meter span. 3. **Durability**: It usually features molded strain relief and thumbscrews to ensure a secure, long-lasting connection that won't accidentally unplug. ### Common Applications * **File Transfer**: Connecting two older PCs to transfer data via serial ports. * **Networking**: Connecting a terminal to a server or console port on networking hardware (routers/switches). * **Industrial Programming**: Communicating with PLCs (Programmable Logic Controllers) or CNC machinery. * **Debugging**: Kernel debugging between two computers in software development. --- ### Internal Wiring (Pinout) In a standard AK306-2-R null modem configuration, the wiring typically follows this logic: ```text DB9 Female (Side 1) <---> DB9 Female (Side 2) Pin 2 (RX) ---------- Pin 3 (TX) Pin 3 (TX) ---------- Pin 2 (RX) Pin 4 (DTR) ---------- Pin 6 (DSR) Pin 5 (GND) ---------- Pin 5 (GND) Pin 6 (DSR) ---------- Pin 4 (DTR) Pin 7 (RTS) ---------- Pin 8 (CTS) Pin 8 (CTS) ---------- Pin 7 (RTS) ```