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()-LS, ()-HF

 -LS RS-485 - ()-LS N×2×0,78 ()-HF N×2×0,78

: (, . )

, RS-485 / 8482, TIA/EIA-485-A. . ()-LS 1.8.2.2.2 53315-2009. ()-HF 1.8.1.2.1. . ()-LS , . . 22.1.12–2005 3, . .




0,78 (7×0,26 ) () , 88-92%. . , - (()-LS) (()-HF). 0,3 . , - (()-LS) (()-HF).



20 C, , /1005,9
  20 C N=1; 2; 3; 4, , /1001,00; 0,59; 0,51; 0,40
, , %3
  1 , 120 12
, , /42
, , , /71
1 , , /1001,65


  , N , , . , 1 , , , ,
()-LS()-HF
113,1262,0 216,5 50 ÷ 70 60 ÷ 7030
1,513,8276,0227,4
217,0340,0318,8
317,7354,0345,5
418,4368,0374,6
519,8396,0451,1
621,0420,0497,6
721,0420,0509,4
822,2444,0521,1
924,1482,0620,9
1025,4508,0668,9

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