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Spectrum analyzer plot showing the rejection levels of the half-harmonic and second harmonic. Observations after this plot was taken indicate that the analyzer may have been somewhat overloaded during this measurement, leading to higher indications of spurious responses than actual. Spurious and harmonic rejection of the TK-931 is specified as 65 dB minimum. Future measurements will be performed and the plot updated. |
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Spectrum analyzer plot showing close-in synthesizer spurious responses. |
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Analyzer plot showing the close-in spectrum with only the DPL modulation. This plot also shows a transmit frequency setting of approximately 250 Hz above the 927.1375 center frequency. The yellow trace is an instantaneous plot while the green trace is a maximum hold plot. |
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Audio response of the exciter closely follows the standard 6 dB per octave pre-emphasis curve. |