eSSL AiFace - Mars Hardware and Communication Diagnostics

This technical troubleshooting reference addresses operational, biometric, and connectivity faults encountered during the deployment and maintenance of the eSSL AiFace - Mars (KT Automation model reference KTI01002003AFMR). Engineered with a 900 MHz Dual Core CPU, 512 MB RAM, and 8 GB ROM running on an embedded Linux OS, proper diagnosis ensures uninterrupted attendance capture and door access control.

Power Faults and Unexpected Terminal Shutdowns

The eSSL AiFace - Mars catalog model KTI01002003AFMR is specified as an operational unit without an internal battery. Because there is no internal energy reserve, the terminal relies entirely on an external regulated DC 12V (±10%), 3A power source. If external uninterrupted power supplies or standalone backup battery units (they are not included) drop below operating thresholds, the unit will power cycle or shut down instantly.

• Terminal Fails to Power On: Measure DC voltage directly at the terminal wiring block using a multimeter under load. Voltage must read consistently at 12V DC with at least 3A current delivery. Long cable runs using undersized copper gauges can cause severe voltage drops; shorten the cable length or increase wire cross-section.
• Random Reboots During Lock Actuation: Inductive kickback from third-party electric strikes or electromagnetic locks can reset the Linux controller. Ensure lock hardware is isolated on an independent power supply or equipped with reverse-biased suppression diodes across inductive lock coils.
• Continuous Hardware Tamper Alarms: AiFace - Mars includes an integrated hardware tamper switch on the rear casing. If the terminal is loosely fixed to its wall bracket or uneven mounting surfaces cause the rear casing to flex, the switch activates. Tighten mounting screws to ensure flush mechanical compression against the wall plate.

Facial Recognition and Verification Failures

Verification is managed by the Face VX5.8 biometric algorithm and dual optical lenses comprising a 2MP WDR low-light camera assisted by adjustable brightness LEDs. Verification speed is engineered to execute in ≤1 second within a 2-meter capture distance and a ±30-degree facial pose angle.

• False Rejections / High Latency: Verify that the user stands within the calibrated 2-meter detection zone and maintains face orientation within ±30 degrees. Check the dual camera lenses for dust, fingerprints, or airborne industrial residues. Clean optical glass using only a dry, soft, non-abrasive microfiber cloth.
• Anti-Spoofing Rejections: The embedded anti-spoofing algorithm actively evaluates live facial depth against print attacks (laser, color, and black & white photos), video playback, and 3D mask attacks. Heavy backlighting or direct, unshaded sunlight can degrade contrast profiles, causing false spoof alarms. Shield the terminal from intense external light sources and adjust the onboard LED illumination intensity.
• Storage Capacity Thresholds: The device accommodates up to 3,000 face templates and 3,000 RFID cards (125 kHz EM standard or optional 13.56 MHz MF). Attempting to enroll users beyond the 3,000 template boundary will cause enrollment errors. Check user counts via the 5-inch touch screen interface.

Network Connectivity and eTimeTracklite Sync Errors

The AiFace - Mars interfaces via standard TCP/IP Ethernet, RS485, Wiegand input/output, and optional Wi-Fi, transmitting transactions to eTimeTracklite software locally or across WAN connections via ADMS (Automatic Data Master Server) protocols.