Steps
  1. Understand the basic terminology.
  2. Find your modem’s diagnostics page.
  3. Login to your modem.
  4. Check the status of each of the modem’s stages.
  5. Evaluate the power levels.
  6. Check the SNR values.
  7. Review the event log.
  8. Unplug the modem.

Keeping this in consideration, What should my SNR be?

Acceptable SNR Levels (dB): If QAM64, SNR should be 23.5 dB or greater. If QAM256 and DPL( -6 dBmV to +15 dBmV) SNR should be 30 dB or greater. If QAM256 and DPL(-15 dBmV to -6 dBmV) SNR should be 33 dB or greater.

Also know, How do you fix SNR problems?

Luckily, there are some things you can do to improve the SNR margin:
  1. Buy a router that is good enough to manage low SNR margin figures.
  2. Install a good quality ADSL filter to your router and to each phone device installed on the same line.
  3. Try to change the ADSL provider, as some providers are less crowded than others.

31 Related Questions Answers Found

 

How do you fix SNR?

Luckily, there are some things you can do to improve the SNR margin:
  1. Buy a router that is good enough to manage low SNR margin figures.
  2. Install a good quality ADSL filter to your router and to each phone device installed on the same line.
  3. Try to change the ADSL provider, as some providers are less crowded than others.

How do I increase the signal to noise ratio on my cable modem?

High noise or low power levels reduce the SNR and can negatively affect your Internet connectivity, resulting in data loss or slow speeds.

Inside Wiring

  1. Remove excess cable running to the modem.
  2. Remove cable splitters.
  3. Check for old or damaged cabling.
  4. Check the connection to the modem.

How many channels do I need on my modem?

Any new modem you buy should have at least 16 downstream channels; anything less is probably either old or underpowered.

How do I test my cable modem?

Steps
  1. Understand the basic terminology.
  2. Find your modem’s diagnostics page.
  3. Login to your modem.
  4. Check the status of each of the modem’s stages.
  5. Evaluate the power levels.
  6. Check the SNR values.
  7. Review the event log.
  8. Unplug the modem.

What is SNR in cable?

Downstream SNR (Signal to Noise Ratio) refers to the signal being sent in relation to the noise on the line. Upstream Power refers to the line signal from the cable modem to transmit data back to the cable provider.

What should cable signal strength?

Downstream and upstream power levels are important when determining if the cable line that is connected to your cable modem or modem router is receiving sufficient power. Good Downstream power levels are within -7 to +7 dBmV. Good Upstream power levels are within 38-48 dBmV.

What is good dBmV?

Re: What are good signal levels

Your modem is receiving good signal. Generally speaking the signal should be for DownStream between – 10 dBmV to + 10 dBmV . Ideally at 0dBmV and SNR 36~40 dB range. For CGN3 you should have 20 channels bonded. And UpStream is normally 36~51 dBmV and with 3 Channels bonded.

How do I check my Comcast signal strength?

Do WiFi boosters work?

A Wi-Fi signal booster extends WiFi network coverage space by boosting or amplifying existing signals. It enables all wireless devices within that expanded coverage space to connect to internet or similar wireless network. It is a unique solution that works by pulling in an existing weak Wi-Fi from transmitter.

How do I fix my cable modem signal?

Cable modem router troubleshooting tips
  1. Make sure that your cable modem’s MAC address is registered with your cable provider.
  2. Check your cable modem’s Ethernet and coaxial cable connections.
  3. If you are using wireless, check that your wireless connection is functioning correctly.
  4. Power off your modem for at least 10 seconds and then power it back on.

How do I know if my router is going bad?

Go to the Lights

Your router has a series of indicator lights, usually located on the front of the device. These lights will let you know if your router is operating properly. The indicator lights will usually show functions that include power, Internet connection and Wi-Fi signal strength.

How do I know if my modem is outdated?

Check with your cable company and see if they’re made the switch. Then, Google the model number of your current cable modem and see if it’s a DOCSIS 3.0 modem. If it is, you’re good to go and you don’t need to upgrade. If your modem isn’t a DOCSIS 3.0 modem, it’s time to go shopping.

How do I test my cable signal?

Point A being nearest to your TV and Point B being the other end of the cable.
  1. Disconnect all TVs.
  2. Short point B (so connect the signal and shield with a wire)
  3. Test point A with a multimeter set at Ohm.

What causes SNR margin drop?

For a number of reasons (such as line drops due to thunderstorms or increased errors on the line due to radio interference), the exchange equipment can increase the target SNR margin. As the target SNR margin is raised, so downlink connection speeds are substantially reduced.

How do I troubleshoot my modem and router?

about 3-4 years

How do I troubleshoot my modem and router?

To reboot your modem and your WiFi router:
  1. Unplug the power cord from the back of the modem and remove any batteries.
  2. Unplug the power cord from the WiFi router.
  3. Wait 60 seconds, and then reinsert any batteries and reconnect power to the modem.
  4. Allow at least two minutes to ensure that the reset is complete.

How do I know if my cable modem is going bad?

The log entries appear to show an intermittent loss of connectivity on the ethernet interface that connects the modem to the router. If either of the devices are old, then it could be a failing ethernet interface. Or more simply, a bad cable between the modem and the router.

Do I need a coax amplifier?

If you have more than that (including everything that is connected to a coax cable, like cable modems, TiVo, ReplayTV, DVRs, cable boxes), you may need a cable amplifier. Depending on the signal strength, a bi-directional amplifier may improve or degrade your cable modem performance.

How do I troubleshoot my modem and router?

Steps to Reboot a Router and Modem
  1. Unplug the router and the modem.
  2. Wait at least 30 seconds.
  3. Plug in the modem.
  4. Wait at least 60 seconds.
  5. Plug in the router.
  6. Wait at least 2 minutes.
  7. When the router and modem restart, test to see if the problem went away.

How long do cable modems last?

about 3-4 years

What is a good WIFI signal strength?

Change Your Location
  1. Move up a floor (or multiple floors). Signal tends to be better on higher floors, as you’re able to clear obstructions closer to ground level.
  2. Move closer to a window.
  3. Go outside.
  4. Move to higher ground.
  5. Find our where your closest cell tower is.

What is the difference between a modem and a router?

In short, your router creates a network between the computers in your home, while your modem connects that network—and thus the computers on it—to the internet. When you connect to Wi-Fi, you’re really connecting to your router, which forwards traffic between the internet and your computer.

What lights should be on my modem?

A blinking light means you are having difficulty connecting to the internet. Ensure all telephone cable connections are tight and secure and reboot the modem and router (if applicable). POWER: A solid green light indicates the unit is properly connected to power. A blinking red light indicates a possible modem failure.

What lights should be on my modem?

Steps to Reboot a Router and Modem
  1. Unplug the router and the modem.
  2. Wait at least 30 seconds.
  3. Plug in the modem.
  4. Wait at least 60 seconds.
  5. Plug in the router.
  6. Wait at least 2 minutes.
  7. When the router and modem restart, test to see if the problem went away.

How do I test my modem and router?

The Obvious Stuff
  1. Test the Internet connection with another device.
  2. If you can’t connect over Wi-Fi, plug a device into the router using an ethernet cable and see if you can connect to the Internet that way.
  3. Make sure the cable between the router and modem is firmly attached.

How do I know if my internet is working?

Look at Your Router and Modem

If that light is out, the Wifi isn’t channeling an internet connection. If it’s on, the internet service itself isn’t working. Before you do anything else, restart your router and modem. You might have just temporarily hit a bug and a quick reboot will fix it.

How can I test my router?

Using the ping command to test the connection between your computer and router
  1. Click Start.
  2. Enter cmd in the Start Search field.
  3. Enter ping, the IP address of your router, and press Enter. For example, the default would be “ping 192.168.1.1”

How do you troubleshoot a router?

To troubleshoot wireless network problems:
  1. Turn off the wireless function and directly connect your computer to the router with an Ethernet cable.
  2. Reboot the computer and check for an internet connection.
  3. If there is still no internet connection reboot the router and any modems in use.

How can I increase my phone signal strength?

Look at Your Router and Modem

If that light is out, the Wifi isn’t channeling an internet connection. If it’s on, the internet service itself isn’t working. Before you do anything else, restart your router and modem. You might have just temporarily hit a bug and a quick reboot will fix it.

How do I test my modem speed?

Here’s how to check your home internet speed:
  1. Connect to your computer to your router using an Ethernet cable.
  2. Open your web browser.
  3. Navigate to www.speedtest.net.
  4. Tap “Go.”

How do you reset the router?

Change Your Location
  1. Move up a floor (or multiple floors). Signal tends to be better on higher floors, as you’re able to clear obstructions closer to ground level.
  2. Move closer to a window.
  3. Go outside.
  4. Move to higher ground.
  5. Find our where your closest cell tower is.