Around 9:30 in the video, the example seems to be calculating the loss budget from the OLT to ONUs 8-10. What I'm wondering is if the splitter loss should only be for one 1x2 and one 1x4 instead of one 1x2 and two 1x4s, such that the total splitter loss should be 11dB (3.5+7.5) instead of 18.5 dB (3.5+7.5+7.5)? If I'm correct, then the total loss budget between OLT and ONUs 8-10 should be 19.9dB instead of 27.4dB. I'm a beginner and I'm trying to better understand this. If I'm correct, then if we were to do the loss budget for ONUs 1-4, it should be 6.8dB (20 km fiber; assuming same length) + 2dB (8 connectors) + 0.75dB (I'm assuming 3 more total splices than the example given; 15x0.05dB) + 18.5dB (1x2 splitter, 1x4 splitter, 1x4 splitter) = 28.05dB. Does anyone know if I'm right or wrong here? I have another question: are splices correlated with number of connectors? Or is it variable based on splicing cables over various distances as needed? I assume the later and that the number of splices provided in the example are some sort of allowance they've decided to generouslt build into the loss budget in case they are needed in the field.
