IQ Signal Masterâ„¢ MX280005A Vector Signal Analysis Software Help : Basic Operation : Sequencer Tab
Sequencer Tab
After a capture, use the Sequencer tab to analyze signals that are long with hundreds of frames where the signal changes, such as in satellite radio signals with a specified bandwidth and the modulation type can change over time. The Sequencer tab provides a tool for the user to separate that out.
Sequencer tab
1. Sequencer Toolbar
2. Chart Button
3. Provides signal analysis results of the parameter sets
4. Add parameter set to the Parameter Sets list
Sequencer Toolbar
The Sequencer toolbar is shown in Figure: Sequencer Toolbar.
Sequencer Toolbar
The Sequencer toolbar elements are described in Table: Sequencer Toolbar.
Sequencer Toolbar
Process the loaded IQ data file to produce a sequence of demodulated frame results.
Generate a process report. See Report.
View saved images of demodulated frames.
See Playback.
Process Rate
Adjust the slider to view frame count activity. Set the slider to left-most for maximum frame count. Faster rates are achieved by skipping ahead in the data set. Only the slowest setting processes all data in the IQ capture file.
Save Images
Check to save each frame that is processed.
Small: Saves small image size (640 x 480) pixels
Large: Saves large image size (1024 x 768) pixels
Elapsed time for fame sequencing
Timer 1: Tracks the elapsed time of frame sequencing.
Timer 2: Tracks the remaining time of frame sequencing.
#: Tracks the number of frames sequenced in a file.
Parameter Sets
The Parameter Sets window is shown in Figure: Parameter Sets Window. Press the Add button to browse and add sets to the Parameters Sets window. Several sets can be added for frame sequencing analysis. Parameter files loaded here are XML Parameter files as shown in Figure: Analyze File Menu.
Parameter Sets Window
The Parameter Sets toolbar and parameter headings are described in Table: Parameter Sets Toolbar and Columns.
Parameter Sets Toolbar and Columns
Press to browse files in a user selected sets folder. Add a set or sets to the list for analysis.
Parameter Set
This column displays the loaded parameter set.

Mod Type
This column displays the sets mod type.
This column displays the signal rate of the set.
This column displays the number of frames found in the file that fits best with the given parameter set. The count number increments as the file is processed.
Frame Sequence
To provide the results that are loaded from Parameter Sets, press the Process: button. Vector signal analysis is performed by searching each of the sets and then lists the lowest EVM of each frame. The results are shown in Figure: Frame Sequence. The results can then be manually scanned to find changes.
Frame Sequence
EVM vs. Frame
Press the Chart button to generate an EVM vs. Frame graph as shown in Figure: EVM vs. Frame Graph. The sets listed in the Parameter Sets window are shown in the top left corner of the graph. The EVM response identifies which sets are on. Note that each frame per set has a lowest set.
EVM vs. Frame Graph
1. List of Parameter Sets
2. Set 16 QAM 1152 - Low Point
3. Set 16 QAM 500 - Low Point
4. Set 16 QAM 684 - Low Point
5. Set 64 QAM 1152 - Low Point
6. Set 64 QAM 5057 - Low Point
Press the Report button to generate a Frame Sequence Report as shown in Figure: Frame Sequence Report.
Frame Sequence Report
3. See Symbol Rate Error vs. Frame: The Symbol Rate Error is a calculated parameter in the analysis. SeeSymbol Rate Error.
Symbol Rate Error
The Symbol Rate is an input parameter to the analysis. The Symbol Rate Error is a calculated value indicating how closely the found symbols aligned with the expected rate. This value is displayed in each Numeric display as shown in Figure: Symbol Rate Error.
Symbol Rate Error