Frame Summary (DVB-S2/S2X)
There are two types of traces in the Trace > Data > Demod menu that display component carrier data: CCn (component carrier is fixed), and Display CC (component carrier is dynamically selected using the Carrier Aggregation > Selected CC for Trace Display parameter). See About Demod Per-Carrier Trace Types for more information.
The trace shows the EVM Error vector magnitude (EVM): A quality metric in digital communication systems. See the EVM metric in the Error Summary Table topic in each demodulator for more information on how EVM is calculated for that modulation format., power, number of symbols and modulation format of each frame part.
Frame Summary is a type of Matrix Table that provides sortable rows by column, selectable column visibility, and copy/paste and export functionality to share rows of content or complete tables to applications like email, text editing or spreadsheet programs.
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Not visible by default To make visible, right-click any column heading and select Column Visibility... |
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| FramePart | Allocation | EVM (dB) | Power (dBm deciBels referenced to a milliWatt: dB relative to 1 milliwatt dissipated in the nominal input impedance of the analyzer) | Num. of Symbols | Modulation Format | BER Bit Error Ratio - A ratio of the number of errors to data bits received on a digital circuit. | Bit Errors (bit) | Bit Count (bit) |
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FramePart is the user-defined name of the frame part configured in the Frame Definition tab. A frame can consist of multiple frame parts. |
Allocation is an element of a frame part. A frame part can consist of multiple elements. |
EVM is the RMS EVM of the frame part or allocation after demodulation. The default unit is dB. Unchecking the Show EVM in dB parameter will show EVM as %rms. |
Power is the average power of the frame part or allocation, averaged over the length (Num. of Symbols) of the frame part or allocation. |
Num. of Symbols is the length of the measured frame part or allocation. |
Modulation Format is the allocation's modulation type. If a frame part has multiple allocations with different modulation formats, the frame part will display "Mixed." |
BER is the allocation's bit error rate, expressed as a ratio and calculated as BER = Bit Errors / Bit Count. When no allocations are included in BER calculations, ‘***’ is shown. |
Bit errors used in the calculation of BER. Averaging/accumulation is not performed on the bits shown in the Frame Summary trace. When no allocations are included in BER calculations, ‘***’ is shown. |
Bit count used in the calculation of BER. Note that averaging/accumulation is not performed on the bits shown in the Frame Summary trace. When no allocations are included in BER calculations, ‘***’ is shown. |
Averaging is not applied to the Frame Summary trace.
See Also
