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　　QSDC-14 Synchronous-Digital Converter is a kind of converter which may transit three-phase alternating current voltage of synchronous implement to 14 bit decimal signal. Input line-line voltage is 11.8V or 90V. Its AC voltage is 400Hz/36V ( 26V or 115V).This facility is mostly used in the yield of flying control instrument, artillery control system, aviation electronics, radar control system, navigation system, and industry automation system etc.

　　QSF-01 Digital Synchronous Transmitter is used to convert angle signal of 0~360° into Synchros output voltage of three lines. Its bosom uses 51MPU control. It may adjust input angle by key-press, in addition control and communicate by RS232 interface. This facility is used in the yield of artillery control system and flying control system or other testing equipments.

　　QSJ-2014 Synchronous Digital Receiver is used to convert synchronous implement input voltage of three lines into 14 bit decimal signal. Its display mode is Number LED (Degree: 3 bit, Minute: 2 bit). This facility is used in the yield of artillery control system and flying control system or other testing equipments.