⚠ JADConfig will reach End of Support on January 1, 2027. View the official notice ⚠
Null Modem Jumper Pinouts for MaxColor Series
Overview MaxColor Encoders and Decoders with 3.5mm ports have a null modem jumper on the bottom of the unit that flips the transmit and receive pins on the RS232 port. The nature of RS232 is that there is always a 50% chance that you have the correct cable. By flipping the jumper, to the alternate position, you …
22-May-2025
Null Modem Jumper Pinouts for Omega/Ultra Series
Overview Ultra Encoders and Decoders have a null modem jumper on the bottom of the unit that flips the transmit and receive pins on the RS232 port. The nature of RS232 is that there is always a 50% chance that you have the correct cable. By flipping the jumper, to the alternate position, you ALWAYS have the cor…
22-May-2025
Serial Cable Pinouts
* Overview * TRS Pinouts Straight-Through Crossover * DB-9 Pinouts Straight-Through Crossover Overview Serial cables are standardized to have 3 pins for communication: * Send (TX) * Receive (RX) * Ground (GND) However, the position of those pins on each side of the cable may vary depending on the …
31-Jul-2023
What is a Null Modem?
* Overview * Straight-Through * Crossover * Just Add Power Null Modem Jumper Overview Simply put, a null modem is an adapter or change that is made to an RS232 connection that swaps the transmit (Tx) and receive (Rx) pins . Straight-Through With RS232 communication, each side of the connection has both a tr…
31-Jul-2023
Serial Cable Pinout Diagram for Luxul Switches
Legacy For existing JADConfig systems only. End of Support Notice: JADConfig systems will reach End of Support on January 1, 2027. Migration to AMP will be required before the Just Add Power Support Team can provide further troubleshooting or system service. See JADConfig End of Support Notice for requirements…
29-Jul-2026
