How-to check signal strength and quality
ScanChannelsBDA is a small program that runs independently from WinTV 7 and can be used to check whether your DVB-T tuner is working correctly. It can be used on Windows XP, Windows Vista and Windows 7.
ScanChannelsBDA is ONLY for scanning digital terrestrial (DVB-T). It will not work for analogue terrestrial or digital satellite (DVB-S/S2)
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Run the program by double-clicking on it. It will automatically create a log file called ScanChannelsBDA.log in the same directory as ScanChannelsBDA_UK.exe.
If ScanChannelsBDA closes itself almost immediately without an error message - you don't have any TV card drivers installed correctly.
If you have multiple DVB-T tuners in your PC, or a dual-tuner DVB-T card, you will be asked to choose which tuner to scan:
Next, the main menu will be presented:
Choose a scanning type. The main options to use from the menu are as follows:
1. UK and Europe (All Frequencies) - Performs a scan of all UK frequencies (UHF/8MHz). USE THIS REGARDLESS OF COUNTRY
6. Graphical (Single Frequency) - Checks single frequency scan (as specified) and produces minimum, maximum and averaged signal strength/quality statistics indefinately until stopped
10. Exit - Closes ScanChannelsBDA
Choose from these by typing the desired number followed by the ENTER key.
Option 1 - UK and Europe (All Frequencies)
From the main menu, type 1 followed by the ENTER key.
The program will then begin to scan through all frequencies. When a signal is locked, you will see a list of channels on that frequency.
Option 6 - Graphical Single-Frequency
Start by typing 6 followed by the ENTER key.
You will be prompted for the Frequency to check - enter this is kHz without any commas or decimal points (i.e. for 762MHz you would enter 762000).
You will be asked for Bandwidth - for the UK, enter 8.
If you specified a frequency on which there is no signal, ScanChannelsBDA may retry whilst displaying "Please wait" for some time.
If a signal is found, then you will see the signal statistics screen:
Press any key to end the signal statistics and return to the main menu.
The Signal Strength should never be used as a basis for any aerial adjustments, nor should it be used for comparison between DVB-T devices. Strength is usually not given as a percentage!
The important numbers to read in the ScanChannelsBDA.log file are Quality.
Quality High - Signal is good
Quality Low - Signal is bad
Click here to see how to capture the right logs files for your problem for WinTV v7. You MUST attach logs files for us to effectively help you.
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