Troubleshooting steps for a G-13 card terminal reporting a communication error. Includes checks for cable integrity, power supply, and ESD.
Refer to the G-13 user manual for default baud rate, parity, data bits, and stop bits.
Visit the manufacturer's website or contact their technical support for driver downloads.
Consult the G-13 user manual for instructions on performing a factory reset. Note that this may erase configuration data.
Communication errors in card terminals can stem from several sources, including incorrect baud rates, voltage fluctuations affecting the serial communication lines (e.g., RS-232 or USB), electromagnetic interference (EMI), electrostatic discharge (ESD) damage to the communication IC, or signal attenuation in long or damaged cables. USB communication relies on 5V DC power and differential signalling on the D+ and D- lines.
Use high-quality, shielded communication cables to minimize EMI.,Ensure the G-13 terminal is properly grounded to prevent ESD damage.,Regularly clean the communication ports on both the G-13 terminal and the host system with a dry, static-free brush.,Implement cable management practices to prevent cable strain and damage. Use cable ties or supports.,Protect the G-13 terminal from extreme temperatures and humidity.,Train staff on proper handling procedures to avoid cable damage or ESD.
If the communication error occurs intermittently, try using a USB isolator or a serial port isolator to eliminate ground loops and reduce EMI. A ferrite choke placed around the communication cable can also help to reduce noise.