|
|
陰特兒（Intel）1000Base-T 設計指導書（Design Guide）：; A6 |, M/ p9 o; c
, M( R+ v7 B6 d8 D' {) W9 HMagnetics modules for 1000 BASE-T Ethernet are similar to those designed solely for 10/100 Mbps, except that there are four differential signal pairs instead of two. Use the following guidelines to verify specific electrical parameters:' ]* E4 l1 R Q
- Verify that the rated return loss is 19 dB or greater from 2 MHz through 30 MHz for 100BASE-TX.
- Verify that the rated return loss is 12 dB or greater at 80 MHz for 100 BASE-TX (the
- specification requires greater than or equal to 10 dB). Verify that the rated return loss is 10 dB or greater at 100 MHz for 1000 BASE-TX (the specification requires greater than or equal to 8 dB).
- Verify that the insertion loss is less than 1.0 dB at 100 kHz through 80 MHz for 100 BASETX.
- Verify that the insertion loss is less than 1.4 dB at 100 kHz through 100 MHz for 1000 BASET.
- Verify at least 30 dB of crosstalk isolation between adjacent channels (through 150 MHz).
- Verify high voltage isolation to 15000 Vrms
- Transmitter OCL should be greater than or equal to 350 μH with 8 mA DC bias.; E; B; n: ?! P! h
8 J6 J8 ?, D5 F" W
6 `* o9 r, H: u; [! [ |
|
/1 
发表于 2017-8-7 13:48
收藏
淘帖
支持！
反对！
发表于 2017-8-18 17:29
楼主
; e& T3 v# f* ^ C; L