新品信息微机自动变频器最近由南京电讯仪器厂研制成功，这种仪器是国际上８０年代初才出现的性能测试脉冲调制载波的高技术产品，过去我国长期依靠进口。该仪器采用取样、谐波外差、脉冲控制与形成、预定标和微机等一系列先进技术，具有测频范围宽、灵敏度高、动态范围大... New Products Computer automatic frequency converter recently developed by Nanjing Telecommunications Instrument Factory, this instrument is the international performance test pulse modulation carrier appeared in the early 1980s, high-tech products, in the past our long-term dependence on imports. The instrument uses sampling, harmonic heterodyne, pulse control and formation, a predetermined standard and a series of advanced computer technology, with a wide range of frequency measurement, high sensitivity, dynamic range ...