Target SNR Margin

This tool allows you to change the target SNR margin (the SNR margin that the DSLAM tries to acheive). This unfortunatly does not work yet for the DG934G.

Increasing the target SNR margin will give you more stability but a lower sync speed. Decreasing the target SNR margin will give a less stable, but faster line.

To change the target SNR just drag the slider to your required value and click "Set and Resync". The values is measured as a percentage of the target SNR set by your ISP; for Sky the default is 7dB.

Speed Test

This tool allows you to test the speed of your connection by getting your router to download a file and time how long it takes to download. As the test is run on the router and not your computer, it is not affected by any problems with your LAN or Wifi connection.

To use it just click "Test".

Ping

This tool allows you to ping a host from your router.

Calculate Sky Password

This tool calculates the default sky values for your router. These values are calculated from your router's LAN MAC address. The most usefull values calculated are the PPP username and password; these can be used in a 3rd party router.

The other values calculated are: default wireless password, default wireless channel and default wireless SSID

To use it just type in your LAN MAC address (if you are calculating details for your router this will already be filled in correctly), select the model of router and click "Calculate".

On the 'Home' page you can access general details about the router.

Connection Details

The connection details page displays basic connection details and allows you to reboot or resync the router. A definition of these details is below:

• Sync Rate - The currently negotiated rate.

• Max Rate - The estimated maximum rate achievable with the line (assuming currently set target SNR Margin).

• Attenuation - The power loss during transmission (dependent on line length).

• SNR Margin - The difference between the SNR required for the current connection speed and the actual SNR.

• ADSL Mode - This is the current ADSL mode. This will usually be either ADSL2+, ADSL2 or G.DMT.

• Channel - This shows whether or not interleaving is enabled (Fast means no interleaving).

• Average Error Rate - The average number of CRC errors which have been occurring every hour since your router was last reset.

The 'Graphs' section is one of the most powerful parts of Sky Router Tool. Here you can display graphs of logged data (bandwidth usage and SNR margin) and advanced ADSL statistics.

All graphs support zooming (using the scroll-wheel on your mouse) and panning (just drag the graph to move around).

Historic Graphs

The historic graphs are the graphs which show previously logged data. Once a graph is selected you can change the time-span displayed using the options at the top of the page.

The table at the bottom of these graphs gives an overview of the data in the currently selected time-span.

ADSL Connection Graphs

These graphs display advanced ADSL connection details. All graphs are available for the DG834GT router; unfortunatly only the 'Bit Loading' graph is currently available for the DG934G. The frequency is measured in kHz.

• Bit Loading - This shows the number of bits carried by each frequency on the ADSL line.

• Signal to Noise Ratio - This shows the signal to noise ratio (in dB) for each frequency.

• Quiet Line Noise - This shows the amount of noise present on the line at each frequency.

• Attenuation - This shows the attenuation of the signal at each frequency.