Thread Links Date Links
Thread Prev Thread Next Thread Index Date Prev Date Next Date Index

[802.3ae_Serial] Cable plant values?



Questions -
 
1. Table 52-25 quotes 3.5 dB/km max attenuation at 850nm, whereas the spreadsheet uses 3.75. 10GFC also quotes 3.75 in its documentation. Which value is correct? All 3 sources agree on 3.5 dB for 50 micron fiber.
 
2. Table 52-24 shows channel insertion losses. Can someone explain where the values come from for the 850 nm variants? Except for 2000 MHz-km, I get significantly different values. The values in the table are not consistent with the model nor with the budget tables for the PMDs.
 
Thanks, Tom
Stratos NW
(425) 672-8035 x105
 
BEGIN:VCARD
VERSION:2.1
N:Lindsay;Tom
FN:Tom Lindsay
ORG:Stratos Lightwave;Opto NW
TITLE:Prin. Engr.
NOTE;ENCODING=QUOTED-PRINTABLE:Home: lindsayta@xxxxxxx=0D=0A=0D=0Aom
TEL;WORK;VOICE:(425) 672-8035 x105
TEL;HOME;VOICE:(425) 775-7013
TEL;CELL;VOICE:(206) 790-3240
TEL;WORK;FAX:(425) 672-8014
ADR;WORK;ENCODING=QUOTED-PRINTABLE:;;6100 219th Street SW=0D=0ASuite 520;Mountlake Terrace;WA;98043
LABEL;WORK;ENCODING=QUOTED-PRINTABLE:6100 219th Street SW=0D=0ASuite 520=0D=0AMountlake Terrace, WA 98043
EMAIL;PREF;INTERNET:tlindsay@xxxxxxxxxxxxxxxxxxxx
REV:20020219T195001Z
END:VCARD