Freedom R8100 SERIES, Operator'S Manual

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Figure 2.2.7.7-7. Ideal Constellation
Constellation Display Mode
Selects the display presentation with the following horizontal menu choices:
Symbols – Only the samples at the optimal symbol decision times are display, as white dots. Correct
transmitter operation should group them tightly around the eight ideal phase points. See Figure 2.2.7.7-6.
Samples – In addition to the symbol points, samples between symbol times three times their number are
displayed as blue dots. See Figure 2.2.7.7-8.
Trajectories – Instead of sample points, blue lines connect adjacent samples to approximate the continuous
transmitter output throughout the burst. See Figure 2.2.7.7-8.
Figure 2.2.7.7-8. Constellation (Samples / Trajectories)
2.2.7.7.1.3 Meter Zone
See 2.2.5 Meter Zone for standard selections.
2.2.7.7.2 TETRA receiver tests
TETRA receiver tests are performed with the R8100 in Generate mode and protocol specific tests are
accessed with the TETRA soft key – see Figure 2.2.7.7-9. The R8100 generates TETRA compliant test