if __name__ == '__main__':
print JitterInjection.__doc__
test = JitterInjection()
frequencies = numpy.arange(90e6,3e9,50e6)
(rmsJitters,backgroundJitter,transmittedPowers) = test.frequencySweep(frequencies,Power(.01,'W'))
pyplot.plot(frequencies,rmsJitters*1e12,label='RMS Jitter')
# pyplot.plot(frequencies,peakToPeakJitters,label='Peak to peak Jitter')
pyplot.plot([frequencies[0],frequencies[-1]],[backgroundJitter*1e12,backgroundJitter*1e12],label='Background RMS jitter')
# pyplot.title('Prana at 900 MHz with 20 dB attenuator (spectrum analyser)')
pyplot.xlabel('Perturbation frequency (Hz)')
pyplot.ylabel('Jitter (ps)')
pyplot.legend()
pyplot.show()
pyplot.plot(frequencies,transmittedPowers)
pyplot.xlabel('Frequency (Hz)')
pyplot.ylabel('Transmitted power (W)')
pyplot.show()
from utility.metaarray import MetaArray,axis
resultArray = MetaArray((len(frequencies),2), info=[
axis('Frequency', values=frequencies, units='Hz',title='Time'),
axis('Measurement', cols=[('j', 'ps', 'RMS jitter'),('P_trans', 'W', 'Transmitted power')])
])
resultArray['Measurement':'j'] = rmsJitters
resultArray['Measurement':'P_trans'] = transmittedPowers
resultArray.writeToExcel('Y:/emctestbench/results/jitter/jitterC1.xls')
inputFrequencies = numpy.arange(16.0e6,27.0e6,.1e6)
experimentNames = ['No interference',
'VCO VDD, 50 MHz (+5 dBm)',
'VCO VDD, 25 MHz (+5 dBm)',
'PH VDD, 50 MHz (+5 dBm)',
'PH VDD, 25 MHz (+5 dBm)',
'DIV VDD, 50 MHz (+5 dBm)',
'DIV VDD, 25 MHz (+5 dBm)'
]
experimentColumns = []
for experimentName in experimentNames:
experimentColumns.append((experimentName,'phi',experimentName))
results = MetaArray((len(inputFrequencies),len(experimentNames)), info=[
axis('f', values=inputFrequencies, units='Hz',title='Input frequency'),
axis('experiment', cols=experimentColumns),
])
for experimentName in experimentNames:
dump = raw_input('Press enter to start experiment "%s"' % experimentName)
sweepResults = numpy.array([])
# capture range chip 1 (type 5)
# capture range chip 2 (type 6) 17.8 26.5
# for inputFrequency in numpy.arange(16.5e6,24.9e6,.1e6):
startTime = time.time()
for inputFrequency in inputFrequencies:
generator.setWaveform(inputFrequency, 2.5,2.5,'SQU')
time.sleep(.4) # .3 should be safe
phaseShift,frequency = experiment.measurePhaseAndFrequency()