数字传输设备 meaning in English
dtf digital transmission facility
Examples
- Bidirectional motion image pronunciation digital transmission equipment as one of the company main products , obtained the widespread use in the military , the public security departments
和地区，作为公司主要产品之一的双向移动图像语音数字传输设备已在军事，公安部门得到广泛使用 - Total length of optical cable had exceeded 6 , 000 kilometers ; the pdh equipment had gradually been replaced by new sdh digital transmission equipment ; and there were nearly 100 , 000 2 mbits transmission circuits in operation throughout the network
光缆总长度超过6000km ，发展初期的pdh设备已逐渐被新的数字传输设备sdh取代，全网实际开通2mbits传输电路数量接近100000条。 - So it is necessary to add an equalizer to the physical receiver . it can enhance the adaptability of broadband digital transmission apparatus and effectively decrease the performance requirement of channel and receiver , accordingly can reduce cost
因此,在实际的通信接收设备中加入均衡器是非常必要的,它可以提高宽带数字传输设备的适应能力,有效降低信道、通道和接收设备的性能要求,节约成本。 - Before the 1990s , the digital transmission equipment was based on the technical standards of plesiochronous digital hierarchy ( pdh ) . in order to connect the switch to pdh transmission equipment , the switch side needs lots of terminal equipment of the primary rate , i . e . , 2048 kbits ( 2m ) switching terminal circuits in compliance with itu - t standards ( e . g . s1240 s dtm trunk module and axe10 s etc module ) and ansi - standard - based 1544 kbits ones
在90年代初期以前，数字传输设备是建立在pdh （ plesiochronousdigitalhierarchy ）技术标准上，为了连接交换机到pdh传输设备上，在交换机侧需要大量的符合基群速率的终端设备，即符合itu - t标准的2048kbits ( 2m )交换终端电路（如s1240的dtm中继模块， axe10的etc模块）和符合ansi标准的1544kbits交换终端电路等。