Performance Measurements

Phase Noise Profiles and Spectrum Graphs

Reference Clock

Test conditions

The Ref Clock is configured with an internal 10 MHz reference. A 50R cable was used to connect Calamine to a Rhode and Swartz FSW Signal and Spectrum Analyzer where we captured the results.

Measurement Results

Figure 1: Phase Noise of Reference Clock

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Figure 2: Spectrum of Ref Clock

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Device Clock

Test conditions

The Dev Clock, used for converters, operates at 300MHz (Configured with internal 10MHz reference). A 50R cable was used to connect Calamine to a Rhode and Swartz FSW Signal and Spectrum Analyzer where we captured the results.

Measurement Results

Figure 3: Phase Noise profile of Dev Clock

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Figure 4: Spectrum of Dev Clock

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Rx Performance Measurements

For dynamic range, the input power of the signal, and the gain of the SDR, are adjusted to provide a near-fullswing amplitude at the ADC, and the FFT is provided. This aims to provide you with a measurement of dynamic range.

Rx Dynamic Range Measurements

Table 1: Calamine Device Parameter Revision for Dynamic Range.
Parameter Revision
Hardware Calamine RTM 1
FPGA 5613e0864
Server firmware-stable-t5v10l1-3.6-82-gdfb88839
MCU mcu-stable-t5v10-3.5-38-g09d262e3
UHD 4.8.0.15-3373-gf2266da2

The following parameters were set for the Rx dynamic range measurements.

Table 2: Calamine Rx Dynamic Range Measurement Parameters & Values
Parameter Value
Sample Rate 25MSPS
FFT Size 1024
Sig. Gen. Frequency SDR Gain (dB) Peak (dBm) Mean Noise Floor (dBm) Dynamic Range (dBm)
50MHz 31 -17.86 -105.21 87.35
500MHz 60 -13.08 -104.59 91.51
1.51GHz 60 -15.37 -105.00 89.63
2.81GHz 83 -13.71 -104.59 90.88
3.61GHz 83 -41.51 -103.34 61.83
5.11GHz 83 -24.70 -103.14 78.44
8.11GHz 83 -26.68 -83.07 56.39
12.11GHz 83 -14.58 -88.25 73.67
15.11GHz 83 -12.46 -86.13 73.97
18.11GHz 83 -18.36 -88.40 70.04
26.11GHz 83 -17.73 -65.87 48.14
29.11GHz 83 -14.05 -68.00 53.95
32.11GHz 83 -12.82 -68.82 56.00
35.11GHz 73 -12.42 -75.04 62.62
38.11GHz 73 -13.73 -76.00 62.27

Test conditions

In the second setup, we generated signals at various frequencies on a signal generator and passed it into Rx Channel A on the Calamine. The signal is captured at full swing using a GNU Radio program, alongside some overrides in the Web UI), where the Rx Gain and Rx Attenuation were set to varying values for each frequency.

Rx Dynamic Range at 50 MHz

Figure 17: Spectrum of 50 MHz Rx Waveform under Max Dynamic Range conditions

Rx Dynamic Range at 495 MHz

Figure 18: Spectrum of 495 MHz Rx Waveform under Max Dynamic Range conditions

877x540

Rx Dynamic Range at 1.506 GHz

Figure 19: Spectrum of 1506 MHz Rx Waveform under Max Dynamic Range conditions

Rx Dynamic Range at 2.801 GHz

Figure 20: Spectrum of 2801 MHz Rx Waveform under Max Dynamic Range conditions

Rx Dynamic Range at 3.605 GHz

Figure 21: Spectrum of 3605 MHz Rx Waveform under Max Dynamic Range conditions

Rx Dynamic Range at 5.105 GHz

Figure 22: Spectrum of 5105 MHz Rx Waveform under Max Dynamic Range conditions

Rx Dynamic Range at 8.105 GHz

Figure 23: Spectrum of 8105 MHz Rx Waveform under Max Dynamic Range conditions

Rx Dynamic Range at 12.105 GHz

Figure 24: Spectrum of 12105 MHz Rx Waveform under Max Dynamic Range conditions

Rx Dynamic Range at 15.105 GHz

Figure 25: Spectrum of 15105 MHz Rx Waveform under Max Dynamic Range conditions

Rx Dynamic Range at 18.105 GHz

Figure 26: Spectrum of 18105 MHz Rx Waveform under Max Dynamic Range conditions

Rx Dynamic Range at 26.106 GHz

Figure 27: Spectrum of 26106 MHz Rx Waveform under Max Dynamic Range conditions

Rx Dynamic Range at 29.106 GHz

Figure 28: Spectrum of 29106 MHz Rx Waveform under Max Dynamic Range conditions

Rx Dynamic Range at 32.106 GHz

Figure 29: Spectrum of 32106 MHz Rx Waveform under Max Dynamic Range conditions

Rx Dynamic Range at 35.106 GHz

Figure 30: Spectrum of 35106 MHz Rx Waveform under Max Dynamic Range conditions

Rx Dynamic Range at 38.101 GHz

Figure 31: Spectrum of 38101 MHz Rx Waveform under Max Dynamic Range conditions