What should my line attenuation be?
between 5 and 30 dB
Optimal values should be between 5 and 30 dB (excellent or good line). An attenuation value of 45 dB or higher means that the line is not suitable for ADSL.
What is high line attenuation?
Line attenuation (loss) is a measure of how much the signal has degraded between the DSLAM and the modem. This is largely a function of the distance from the exchange. The lower the dB, the better for this measurement. High value Line Attenuation very poor.
How do you increase line attenuation?
How to Reduce Line Attenuation For DSL
- Change the network and connection cables running from your cable to your modem.
- Switch the cables running from your modem to the main source of power in the building you are in.
- Find the phone jack where your modem connects to the phone line in your building.
What is line attenuation?
Line attenuation (loss) is a measure of how much the signal has degraded between the DSLAM and the modem. The lower the dB, the better for this measurement. Attenuation is logarithmic and each 3dB of attenuation halves the strength of the signal power received.
Why is attenuation measured in decibels?
Signal strength is measured in decibels as the signals are a type of radiation. They are emitted in Frequency and have an amplitude as well. Therefore they are measured in Decibels which is also the unit to measure the intensity of sound.
What is a 10 dB attenuator?
SMA attenuators are used to reduce the input power, and therefore enable RF Explorer to measure stronger signals. This 10dB attenuator will extend the valid protection range of most RF Explorer models to up +15dBm safely (32mW).
What is 3dB attenuation?
The -3dB point is at the start of the attenuation. Actually -3dB means that half of _that_frequency_ of the signal has power attenuated. Frequencies below -3dB are not attenuated (by much) , frequencies above are more strongly attenuated.
How do you fix high line attenuation?
What is considered good DSL line attenuation?
The lower the dB, the better for this measurement. Attenuation is logarithmic and each 3dB of attenuation halves the strength of the signal power received. The standard signal attenuation spread for a given speed is somewhere in the region of 15-20dB for ADSL2/2+ speeds and 25-30dB for ADSL1 speeds.
How does attenuation affect the strength of a signal?
This is largely a function of the distance from the exchange. The lower the dB, the better for this measurement. Attenuation is logarithmic and each 3dB of attenuation halves the strength of the signal power received.
What’s the difference between SNR and line attenuation?
It’s the difference between the actual SNR (dB noise) and the line attenuation required to sync at a specific speed. This also depends on the ADSL technology, ADSL (up to 8 Megabits), ADSL2 (up to 12 Megabits) or ADSL2+ (up to 24 Megabits). Calculation example: Desired downstream in Kilobits per second: 8096 (ADSL)
What is SNR margin and line attenuation for ADSL?
This also depends on the ADSL technology, ADSL (up to 8 Megabits), ADSL2 (up to 12 Megabits) or ADSL2+ (up to 24 Megabits). Calculation example: Desired downstream in Kilobits per second: 8096 (ADSL) SNR: 44 dB Attenuation: 35 dB SNR Margin: 44-35 = 9 dB