psldave
join:2003-07-31
Port Saint Lucie, FL
| reply to prisoner3
Re: Upstream off the chart: Downstream unchanged...
said by prisoner3  :
Actually you want that lower, definitely under + 58dBmV
which is the acceptable limit. The splitter will lower the dB slightly (higher before the splitter, lower after.) An
old cable installer trick is to put in an extra splitter if dB is too high. ( too high just as bad as too low)
Since the upstream is how much power the modem is having to transmit back up the cable, adding splitters will only make the modem have to work even harder to get a connection. The modem's upstream is maxed now - adding a splitter now causes the connection to fail - the SNR upstream isn't good enough for a solid connection due to low signal level. |
