TGBT14A_912_86 Analysis

Noise source directly into VEGAS ADCs

Seven channels of the splitter connected to VEGAS banks E2 through H2. Eighth channel connected to an Agilent Power meter. Step the attenuator through the useful range of VEGAS ADC powers (as calculated by the Manager).

  • ADC powers versus Power Meter measured power
    AdcPMLogLog.png

  • y = mx fit for one sampler:
    AdcvPMNoiseADC F2p0plot 0.png

  • y = mx fit, residuals:
    AdcvPMNoiseADC F1p0plot 2.png

  • y = a + mx + b x**2:
    AdcvPMNoiseADC F1p2plot 0.png

  • y = a + mx + b x**2 residuals:
    AdcvPMNoiseADC F1p2plot 2.png

Noise source into VEGAS IF modules

Seven channels of the splitter connected to VEGAS IF Modules banks E2 through H2. Eighth channel connected to an Agilent Power meter. Step the attenuator through the useful range of VEGAS ADC powers (as calculated by the Manager). Outputs also connected to DCR inputs

  • ADC powers versus DCR measured power, noise into IF:
    AdcDcrLogLog.png

  • y = mx fit, noise into IF:
    AdcvDCRNoiseIF F1p0 plot1.png

  • y = mx fit, residuals, noise into IF:
    AdcvDCRNoiseIF F1p0 plot3.png

  • y = a + mx + b x**2 fit, noise into IF:
    AdcvDCRNoiseIF F1p2 plot1.png

  • y = a + mx + b x**2 residuals, noise into IF:
    AdcvDCRNoiseIF F1p2 plot3.png

Noise Source into ADC, (On-Off) / Off

  • Off / (On - Off) noise into ADC:
    ScanNScanMAbs.png

  • Off / (On - Off) noise into ADC, results from VEGAS spectra:
    VEGAS ADC.png

Noise source into IF, (On-Off) / Off

  • Off / (On - Off) noise into IF:
    IFScanNScanMAbs.png

  • Off / (On - Off) noise into IF, results from VEGAS spectra:
    VEGAS IF.png

-- RichardPrestage - 2015-04-08
Topic attachments
I Attachment Action Size Date WhoSorted ascending Comment
AdcDcrLogLog.pngpng AdcDcrLogLog.png manage 32 K 2015-04-08 - 10:43 RichardPrestage ADC powers versus DCR measured power, noise into IF
AdcPMLogLog.pngpng AdcPMLogLog.png manage 32 K 2015-04-08 - 10:36 RichardPrestage ADC powers versus Power Meter measured power
AdcvDCRNoiseIF_F1p0_plot1.pngpng AdcvDCRNoiseIF_F1p0_plot1.png manage 28 K 2015-04-08 - 10:44 RichardPrestage y = mx fit for one sampler, noise into IF
AdcvDCRNoiseIF_F1p0_plot3.pngpng AdcvDCRNoiseIF_F1p0_plot3.png manage 26 K 2015-04-08 - 10:45 RichardPrestage y = mx fit, residuals, noise into IF
AdcvDCRNoiseIF_F1p2_plot1.pngpng AdcvDCRNoiseIF_F1p2_plot1.png manage 30 K 2015-04-08 - 10:45 RichardPrestage y = a + mx + b x**2 fit, noise into IF
AdcvDCRNoiseIF_F1p2_plot3.pngpng AdcvDCRNoiseIF_F1p2_plot3.png manage 33 K 2015-04-08 - 10:46 RichardPrestage y = a + mx + b x**2 residuals, noise into IF
AdcvPMNoiseADC_F1p0plot_2.pngpng AdcvPMNoiseADC_F1p0plot_2.png manage 32 K 2015-04-08 - 10:41 RichardPrestage y = mx fit, residuals
AdcvPMNoiseADC_F1p2plot_0.pngpng AdcvPMNoiseADC_F1p2plot_0.png manage 40 K 2015-04-08 - 10:41 RichardPrestage y = a + mx + b x**2
AdcvPMNoiseADC_F1p2plot_2.pngpng AdcvPMNoiseADC_F1p2plot_2.png manage 31 K 2015-04-08 - 10:42 RichardPrestage y = a + mx + b x**2 residuals
AdcvPMNoiseADC_F2p0plot_0.pngpng AdcvPMNoiseADC_F2p0plot_0.png manage 37 K 2015-04-08 - 10:38 RichardPrestage y = mx fit for one sampler
IFScanNScanMAbs.pngpng IFScanNScanMAbs.png manage 37 K 2015-04-08 - 12:09 RichardPrestage Off / (On - Off) noise into IF
ScanNScanMAbs.pngpng ScanNScanMAbs.png manage 32 K 2015-04-08 - 12:07 RichardPrestage Off / (On - Off) noise into ADC
VEGAS_ADC.pngpng VEGAS_ADC.png manage 47 K 2015-04-08 - 12:07 RichardPrestage Off / (On - Off) noise into ADC, results from VEGAS spectra
VEGAS_IF.pngpng VEGAS_IF.png manage 47 K 2015-04-08 - 12:08 RichardPrestage Off / (On - Off) noise into IF, results from VEGAS spectra
Topic revision: r2 - 2015-04-08, RichardPrestage
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