QT680扫码

Thank you for using the QT680 scanner. The company is not liable for improper-operation damage. Follow specs and reference designs; observe general safety. The company may revise this manual.

Product Introduction The QT680 is a compact scanner supporting USB, RS232 and TTL, for many scenarios.

Product Features 1, Strong reading including dim screens. 2, Paper-code reading. 3, High-speed reading. 4, Easy configuration.

Precautions 1, No disassembly/modification. 2, Keep away from fire. 3, If dropped, cut power and contact support. 4, Stable placement; avoid moisture/dust. 5, No abrasive material on window.

General: USB/RS232/TTL; white LED; 0.3MP CMOS; 640×480; Windows/Linux/Android/Mac; embedded; PC/ABS; white LED fill; 8-pin cables. Reading: QRCODE, PDF417, EAN, ISBN, CODE, UPCA/UPCE/Aztecode etc.; screen/paper; depth 20–100mm; ≥8mil; 70ms avg; tilt ±56.8°/rotate ±360°/skew ±62.4°; FOV H77°/V68°. Electrical: DC 5V; 116.3mA; 581.5mW. Environment: ESD ±8kV air/±6kV contact; -10 to 60°C; 0–80000Lux.

Pin1 TTL_RX, Pin2 TTL_TX, Pin3 GND, Pin4 VCC, Pin5 RS232_RX, Pin6 RS232_TX, Pin7 Data-, Pin8 Data+.

Wiring and connection diagrams (USB/RS232/TTL). Configuration: the configuration tool; example USB-normal: select device → normal → USB keyboard → add CR → generate config code → scan → power-cycle (QT680 has no buzzer, enable scan-flash).

CMOS sensor; avoid strong light on the window.

(1) Cannot connect config tool → scan-to-configure. (2) No response (no buzzer) → set post-scan "white light off". (3) USB SDK demo → developer mode "USB keyboard". (4) Serial dev → use protocol on COM port.