2023年全國碩士研究生考試考研英語一試題真題(含答案詳解+作文范文)_第1頁
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1、TIA CAT 5e Basic LinkImped. Wire Map Res. lengthDelay SkewProp. Delay Freq next attn RL acr elfextPS nextPS acrPSelfextCable Type nvp limit Required ? Max nS nS MHz dB dB dB dB dB dB dB dBUTP 100 Cat 5eScTP 100 Cat 5e69

2、6990-11090-11012345678S |||||||| 1234567812345678S ||||||||| 12345678SN/A 94m 308ft<45 <518 1.0 4.0 8.0 10.0 16.0 20.0 25.0 31.25 62.5 100.060.0 54.8 50.0 48.5 45.2 43.7 42.1 40.6 35.7 32.33.0 4.0 5.7 6.4 8.1 9.1 1

3、0.3 11.6 16.7 21.617.0 17.0 17.0 17.0 17.0 17.0 16.3 15.6 13.5 12.157.0 50.8 44.4 42.1 37.1 34.5 31.8 29.0 18.9 10.760.0 48.0 41.9 40.0 35.9 34.0 32.0 30.1 24.1 20.057.0 51.8 47.1 45.6 42.2 40.7 39.1 37.5 32.6 29.354.0 4

4、7.8 41.4 39.2 34.1 31.5 28.8 25.9 15.9 7.757.0 45.0 38.9 37.0 32.9 31.0 29.0 27.1 21.1 17.0NOTE: All limits derived from TIA/EIA-568-addendum #5 specifications. Exceeding the Impedance limit will result in a “Warning” on

5、ly.TIA CAT 5e ChannelImped. Wire Map Res. lengthDelay SkewProp. Delay Freq next attn RL acr elfextPS nextPS acrPSelfextCable Type nvp Limit Required Max nS nS MHz dB dB dB dB dB dB dB dBUTP 100 Cat 5ScTP 100 Cat 5e69699

6、0-11090-11012345678S |||||||| 1234567812345678S ||||||||| 12345678SN/A 100m 328ft<50 <555 1.0 4.0 8.0 10.0 16.0 20.0 25.0 31.25 62.5 100.060.0 53.6 48.6 47.0 43.6 42.0 40.4 38.7 33.6 30.13.0 4.5 6.3 7.1 9.1 10.2 11

7、.4 12.9 18.6 24.017.0 17.0 17.0 17.0 17.0 17.0 16.0 15.1 12.1 10.057.0 49.1 42.3 39.9 34.5 31.8 28.9 25.9 15.0 6.157.4 45.3 39.3 37.4 33.3 31.4 29.4 27.5 21.5 17.457.0 50.6 45.6 44.0 40.6 39.0 37.4 35.7 30.6 27.154.0 46.

8、1 39.3 36.9 31.5 28.8 25.9 22.9 12.0 3.154.4 42.4 36.3 34.4 30.3 28.4 26.4 24.5 18.5 14.4NOTE: All limits derived from TIA/EIA-568-addendum #5 specifications. Exceeding the Impedance limit will result in a “Warning” only

9、.TIA CAT 5e Perm LinkImped. Wire Map Res. lengthDelay SkewProp. Delay Freq next attn RL acr elfextPS nextPS acrPSelfextCable Type nvp limit Required ? Max nS nS MHz dB dB dB dB dB dB dB dBUTP 100 Cat 5eScTP 100 Cat 5e69

10、6990-11090-11012345678S |||||||| 1234567812345678S ||||||||| 12345678SN/A 90m 295ft<45 <518 1.0 4.0 8.0 10.0 16.0 20.0 25.0 31.25 62.5 100.060.0 54.8 50.0 48.5 45.2 43.7 42.1 40.5 35.7 32.33.0 3.9 5.7 6.2 7.9 8.9 1

11、0.0 11.2 16.2 21.019.0 19.0 19.0 19.0 19.0 19.0 18.0 17.1 14.1 12.057.0 50.9 44.5 42.3 37.3 34.8 32.1 29.3 19.4 11.358.6 46.6 40.6 38.6 34.5 32.6 30.7 28.7 22.7 18.657.0 51.8 47.0 45.5 42.2 40.7 39.1 37.5 32.7 29.354.9 4

12、7.9 41.5 39.3 34.3 31.8 29.1 26.3 16.4 8.355.6 43.6 37.6 35.6 31.5 29.6 27.7 25.7 19.7 15.6NOTE: All limits derived from TIA/EIA-568B specifications. Exceeding the Impedance limit will result in a “Warning” only.TIA CAT

13、5 BL (1999)Imped. Wire Map Res. lengthDelay SkewProp. Delay Freq近端串擾 NEXT衰減 ATT EN RL串擾比 ACR elfextPS nextPS acrPSelfextCable Type nvp Limit Required Max nS nS MHz dB dB dB dB dB dB dB dBUTP 100 Cat 5ScTP 100 Cat569699

14、0-11090-11012345678S |||||||| 1234567812345678S ||||||||| 12345678SN/A 94m 308ft<45 <518 1.0 4.0 8.0 10.0 16.0 20.0 25.0 31.5 62.5 100.060.0 51.8 47.1 45.5 42.3 40.7 39.1 37.6 32.7 29.33.0 4.0 5.7 6.4 8.1 9.1 10. 3

15、 11. 6 16. 7 21. 615.0 15.0 15.0 15.0 15.0 15.0 14.3 13.6 11.5 10.157.0 47.8 41.4 39.1 34.1 31.6 28.9 26.0 15.9 7.757.0 45.0 38.9 37.0 32.9 31.0 29.0 27.1 21.1 17.0N/A N/A 54.4 42.4 36.3 34.4 30.3 28.4 26.4 24.5 18.5 14.

16、4NOTE: All limits derived from TSB-95 specifications. Exceeding the Impedance limit will result in a “Warning” only.TIA CAT 5 CH (1999)Imped. Wire Map Res. lengthDelay SkewProp. Delay Freq next attn RL acr elfextPS nextP

17、S acrPSelfextCable Type nvp Limit Required Max nS nS MHz dB dB dB dB dB dB dB dBUTP 100 Cat 5ScTP 100 Cat569 696990-110 90-11090-11012345678S |||||||| 1234567812345678S ||||||||| 12345678SN/A 100m 328ft<50 <555 1.

18、0 4.0 8.0 10.0 16.0 20.0 25.0 31.5 62.5 100.060.0 50.6 45.6 44.0 40.6 39.0 37.4 35.7 30.6 27.13.0 4.5 6.3 7.0 9.2 10.3 11.4 12.8 18.5 24.015.0 15.0 15.0 15.0 15.0 15.0 14.0 13.1 10.1 8.057.0 46.1 39.3 36.9 31.6 28.8 26.0

19、 22.9 12.0 3.157.0 45.0 38.9 37.0 32.9 31.0 29.0 27.1 21.1 17.0N/A N/A 54.4 42.4 36.3 34.4 30.3 28.4 26.4 24.5 18.5 14.4NOTE: All limits derived fromTSB-95 specifications. Exceeding the Impedance limit will result in a “

20、Warning” only. TIA CAT 5 BL (1995)Imped. Wire Map Res. lengthDelay SkewProp. Delay Freq next attn RL acr elfextPS nextPS acrPSelfextCable Type nvp limit Required Max nS nS MHz dB dB dB dB dB dB dB dBUTP 100 Cat 5ScTP 10

21、0 Cat 5696990-11090-11012345678S |||||||| 1234567812345678S ||||||||| 12345678SN/A 94m 308ft<50 N/A 1.0 4.0 8.0 10.0 16.0 20.0 25.0 31.25 62.5 100.060.0 51.8 47.1 45.5 42.3 40.7 39.1 37.6 32.7 29.33.0 4.0 5.7 6.3 8.2

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