Displaying a Composite Symbols Table (TEDS)

To display the composite Symbol Table using a test signal for TEDS Normal Uplink, 50kHz, 16QAM:

Load the demo signal (see Loading a TEDS Demo Signal).
Select TEDS demodulation (see Selecting TEDS Demodulation).
In the Format tab of the TEDS (TETRA2) Demod Properties dialog box (see Displaying TEDS Demod Properties Dialog Box ), select a channel bandwidth of 50kHz. The Channel Bandwidth must be selected before a Preset to Standard can be used.
Click Preset to Standard > Normal Uplink. The VSA will then set certain parameters based on a Normal Uplink slot format / 50kHz channel bandwidth. The parameter settings are listed in Using Standard Setups/Presets.
In the Analysis tab of the TEDS demod properties dialog box (see Displaying TEDS Demod Properties Dialog Box ), select 16QAM for the modulation type (if necessary).
Click within a trace, and then select Trace > Data > Channel 1 Comp > Syms to view a table of the symbols for the composite signal.
$image\DispCompSymTable.jpg$
In the Symbol Table, the sync, pilot, and header symbols are in white. Sync (S) symbols are first, followed by an interspersing of Pilot (P) and Header symbols. The Header symbols appear as data values when Include - Header Symbols is selected (default). These data values are limited to hex 0, 1, 2, 3 since the data is always QPSK Quadrature phase shift keying. To view Header symbols as an "H", clear Include - Header Symbols (MeasSetup > Demod Properties > Advanced Include > Header Symbols).
The remaining symbols in color are the Data symbols. The quantity and format of the symbols appearing in this table depend on the Modulation Type format (the above example is for 16QAM), as well as Trace properties (hex or binary display using Trace > Digital Demod > Symbol Table Format). Place a marker on a symbol value using Markers > Show Marker to clarify the display.