Daktronics Data Cable

Warning: Not responsible for damage to equipment.

To make a DB-25 (Daktronics Console side) to DB-9 (computer side) serial cable, connect pin 2 to 2, pin 3 to 3, and pin 7 to 5. Because DB25 and DB9 serial ports use different pin conventions for DTE (Data Terminal Equipment) devices, mapping matching pin numbers automatically routes transmit to receive.

DB25: Pin 2 is TX (Transmit), Pin 3 is RX (Receive).DB9: Pin 2 is RX (Receive), Pin 3 is TX (Transmit).

1. Wire Pin 2 (TX to RX): Data Out. Connect DB25 Pin 2 (Daktronics TX) directly to DB9 Pin 2 (Computer RX).
2. Wire Pin 3 (RX to TX): Data In. Connect DB25 Pin 3 (Daktronics RX) directly to DB9 Pin 3 (Computer TX).
3. Wire Ground: Ground Reference. Connect DB25 Pin 7 (Signal GND) directly to DB9 Pin 5 (Signal GND).
4. Isolate All Other Pins: Safety Precaution. Leave all remaining DB25 pins completely disconnected to ensure high-voltage 20mA current loop signals do not reach your computer's serial port.