analyzer:manual:undecoded_window
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analyzer:manual:undecoded_window [2010/04/28 07:54] – sestst | analyzer:manual:undecoded_window [2018/11/03 02:59] (current) – external edit 127.0.0.1 | ||
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- | ====== Undecoded Window | + | {{: |
+ | \\ | ||
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+ | ====== Signal Analysis ====== | ||
+ | The Protocol Analyzer can be used to analyze the raw data signals to help understand new protocols and write new decoders. This can also be used to tune the volume of the audio device to optimize reception. | ||
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+ | ===== Undecoded Window ===== | ||
The undecoded window is the heart of the analyzer. Here you can see the raw undecoded signal and analyze the pulses. The Windows is opened by double clicking on a raw message line\\ | The undecoded window is the heart of the analyzer. Here you can see the raw undecoded signal and analyze the pulses. The Windows is opened by double clicking on a raw message line\\ | ||
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^Nr^Explanation^ | ^Nr^Explanation^ | ||
- | |1|Signal | + | |1|Signal |
|2|The analog signal received from the audio device (red line). If the CUL device is used, this is not available | | |2|The analog signal received from the audio device (red line). If the CUL device is used, this is not available | | ||
|3|The pulse interpretation of the analog signal (blue line). The flank detector uses the flank settings to detect pulses in the analog signal. The result of that analysis is presented here| | |3|The pulse interpretation of the analog signal (blue line). The flank detector uses the flank settings to detect pulses in the analog signal. The result of that analysis is presented here| | ||
- | |4|Pulses matching the selected pulse group (green line). Select a pulse length group below to see which pulses in the signal matches that length| | + | |4|Pulses matching the selected pulse group (green line). Select a pulse length group below to see which pulses in the signal matches that length. This line only appears when a row in the pulse group list is selected| |
|5|Pulse group window| | |5|Pulse group window| | ||
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===== Zoom ===== | ===== Zoom ===== | ||
- | You can zoom in on any part of the graph by selecting the upper left corner of the area you want to zoom in on, hold the left mouse button pressed and drag the cursor to the lower left corner of the area and then releasing the button: | + | You can zoom in on any part of the graph by selecting the upper left corner of the area you want to zoom in on, hold the left mouse button pressed and drag the cursor to the lower right corner of the area and then releasing the button: |
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===== Pulse Length Distribution View ===== | ===== Pulse Length Distribution View ===== | ||
+ | The sampled signal can also be presented in a "pulse length plane", | ||
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+ | {{: | ||
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+ | ^Nr^Explanation^ | ||
+ | |1|Pulse Length Distribution tab selected| | ||
+ | |2|Currently selected pulse group is marked with green| | ||
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+ | When a pulse group is selected in the pulse group window, the corresponding pulse length area is marked with green in the graph. | ||
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+ | Note that this sample is made with the audio sampler. This uses a sample frequency of 44.1 KHz giving a pulse length resolution of 23 micro seconds. This is why the bars in the diagram are separated. | ||
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+ | You can zoom in and out on this graph in the same way as on the Signal view. | ||
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+ | ===== Reanalyze Signal ===== | ||
+ | In the signal graph you can see if the flank detector has been able to recreate the digital pulse correctly. If not, you have to adjust the flank detector settings in [[analyzer: | ||
+ | {{: | ||
+ | \\ | ||
+ | This will generate a new raw signal entry as if the signal was received again, but using the new flank detector settings. | ||
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+ | ---- | ||
+ | [[analyzer: | ||
+ | [[analyzer: | ||
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analyzer/manual/undecoded_window.1272434064.txt.gz · Last modified: 2018/11/03 02:57 (external edit)