Description
ABB LDMTR-01 communication networks
ABB LDMTR-01 communication networks
Compared with analog communication, digital communication has obvious advantages: firstly, it has strong anti-interference ability. It is difficult to separate the superimposed noise in the transmission process of analog signals, and the noise will seriously affect communication quality as the signal is transmitted, amplified, and transmitted. The information in digital communication is contained in the presence or absence of pulses. As long as the absolute value of noise does not exceed a certain threshold, the receiving end can determine the presence or absence of pulses to ensure the reliability of communication. Secondly, long-distance transmission can still ensure quality. Because digital communication adopts a regenerative relay method, which can eliminate noise. The regenerated digital signal, like the original digital signal, can continue to be transmitted, so that the communication quality is not affected by distance and can be high-quality for long-distance communication. In addition, it also has the advantages of adapting to various communication business requirements (such as telephone, telegram, image, data, etc.), facilitating the implementation of a unified integrated business digital network, facilitating the use of large-scale integrated circuits, facilitating encryption processing, and facilitating computer management of communication networks.
BENTLY 3500/92 136180-01
BENTLY 3500/25 149369-01
Cutler-Hammer C825KN10
ABB V17111-110
SANYO P30B04010PCKST
ABB TC560V2 3BSE022178R1
ABB PPC907BE 3BHE024577R0101
HONEYWELL FC-TSHART-1620M
ABB PM665 3BDS005799R1
ABB CMA198
GE IS200TRPGH1B
ABB UPC325AE01 3BHB000644R0001
GE IS200ERSCG2A
GE 362A1053P002