P1130A Black Box Serial Parallel Converter
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Bi‑directional converter: Converts between parallel (DB‑25) and serial (DB‑25) communication formats
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Baud rates: Supports 1 200 – 115 200 bps across common settings (e.g., 9 600, 38.4k)
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Flow control: Both hardware (DTR/RTS) and software (XON/XOFF) supported
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Data formats: 7 or 8 data bits, odd/even parity or no parity, 1 stop bit
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Power: Draws power from DTR/RTS handshake lines or an external 7–18 VDC @ 2 mA power supply
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DIP switch configurable: 8‑position DIP for direction, baud, flow, bits, parity settings
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Buffer: 96‑byte internal buffer
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Size: Approximately 3.8″ × 2.4″ × 0.9″
🛠 Typical Use Cases
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Parallel‑to‑serial: Connects DB‑25 parallel port (from PC/LPT) to a DB‑25 serial device (e.g., printer).
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Serial‑to‑parallel: Opposite direction—serial port sends to parallel printer.
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DIP switches let you control mode (bit 8), flow control (bit 4), and others via a quick hardware config.









