>>> MGA2K Delta F Function <<<
Shown in Figure 1 is an oscilloscope display of the signal level at the MGA2K VCO tuning terminal (V-T) with DC only , no AC component. Refer to the right side of Figure 1 for the following information. Cursor 1 is on the base line and Cursor 2 is on the trace which produces a Delta V of 8.00 VDC.
Figure 2 is a spectrum analyzer display of the MGA2K output. The marker (MKR) is on the peak of the trace (1.5013 GHz, -13.41 dBm). To keep the spectrum analyzer from being over driven, a 20 dB attenuator is required between the MGA2K output and spectrum analyzer input. The MGA2K power output level is 20 - 13.41 = 6.59 dBm.
Figure 3 is the oscilloscope display of the signal level at the internal VCO tuning terminal (V-T) with 8 VDC and 2.6 Volt P-P AC. Refer to the right side of Figure 3 for the following information. Cursor 1 is on the waveform valley and Cursor 2 is on the waveform peak which produces a Delta V of 2.6V P-P. This VCO drive level at the V-T terminal produces the MGA2K output displayed by the spectrum analyzer screen image of Figure 4. Refer to the bottom of spectrum analyzer display of Figure 4 for the following information. Span = 500 MHz or 50 MHz / divison. Delta F is approximately 200 MHz.
Figure 1, VCO V-T Input With DC Only
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Figure 2, MGA2K Output
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Figure 3, VCO V-T Input With 8 Volt DC & 2.6 Volt P-P AC
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Figure 4, MGA2K Output
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