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据84年10月第10期日刊《OE》报导,日本新近研制成功的 FFL-DH-020、FFL-DH320小型光数字连接器的电路部份经混合集成后装在一块印刷板上。020型采用非归零码,用于传输速率为 DC-2兆比特/秒的系统;320型用于传输速率为 DC-32兆比特/秒
According to the “OE” of the 10th issue of October, 84, the circuits of FFL-DH-020 and FFL-DH320 miniature optical digital connectors newly developed in Japan were mixedly integrated and mounted on a printed board. Type 020 uses non-return-to-zero codes for systems with transmission rates of DC-2 Mbit / s and Type 320 for systems with transmission rates of DC-32 Mbit / s