supply voltage matches the device specification; abnormal voltage prevents normal operation. Check wiring: TTL communication: Cross wiring rule – RX ↔ TX. RS485 communication: Straight wiring rule – A to A, B to
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Operation guide: Cover the full disc surface with intact aluminum foil, no gaps or wrinkles. Add a waterproof film for long-term outdoor use to prevent aluminum foil oxidation and signal attenuation. For long-term
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Answer: Foam thicker than 3‑4 cm triggers an “insufficient echo energy” alert. As foam thickness increases, radar signal penetration degrades, the sensor fails to capture valid target echoes, and outputs weak
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Send AT command AT+OUTRAWDATA=2 via upper computer; confirm reply “OK”, then close the serial port. Open the Spectrum Viewer software, select the correct serial port, open the port, and click FFT Spectrum
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Answer: Set a unique communication address for each radar (factory default address: 127 / Modbus hex address 0x7F). Radars with unique addresses can be connected on the same RS485 bus, but the upper computer software can
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Answer: The beam angle cannot be reduced beyond its current specification — narrower angles increase interference from ground reflections and wall obstructions and require high-precision customized sensors with special c
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Q: Can I extend the power cable myself? Can the cable be extended to 50 m or more? A: Power cables for RS485 models may be extended on-site. Use thicker-gauge wiring to maintain operating voltage between 9‑12 V and avoid
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Answer: Operating frequency: 80 GHz; Modulation: FMCW (Frequency Modulated Continuous Wave); Supported protocols: Modbus, Text protocol.
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1. Open environments (rivers, open water tanks) Typical issues: Weak true target echoes, frequent antenna echo interference, unstable distance readings. Increase RF transmit power (secondary echoes rarely occur in open
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Spurious echoes detected → Enable spurious echo learning. Secondary echoes detected → Enable nearest peak detection and inspect RF settings. Weak/unstable true target echo energy → Optimize RF power and filter para
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Scenario 1: Decreasing empty distance Fluctuation ≤ 0.4 m: Likely antenna echo interference. Fluctuation > 0.4 m: Obstacles exist between radar and target. Scenario 2: Increasing empty distance Readings are appr
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Answer: Suspended installation mode is enabled. Switch to standard installation mode to activate blind zone alerts (default blind zone 0.3 m, adjustable downwards). Suspended installation function: In complex echo scenar
2026-08-07Copyright @ 2026 Shenzhen Jiajia Eye Technology Co., Ltd.
