Tracor Westronics DDR10 Dew Cell Recorder

The Tracor Westronics DDR10 is a digital chart recorder used to log and graph process data from industrial sensors. Common failure points include the internal power supply board (often failing due to voltage spikes), the LCD/graph display module (burn‑in or dead pixels), and the data interface circuitry (SDI/RS‑232 ports). For initial troubleshooting, verify that the unit receives correct input voltage and that the power indicator lights up; check all I/O connections for proper signal levels and continuity; then inspect the display and memory for error codes or corrupted logs. If these checks pass, proceed to test the internal data bus and firmware integrity.[oss-gpt-20b]

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