def __init__(self):
self.jitterMeter = device.Agilent86100a()
#device.Agilent53220a('TCPIP0::172.20.1.206::inst0::INSTR')
assert self.jitterMeter.tryConnect()
self.transmittedPower = TransmittedPower()
self.rfGenerator = self.transmittedPower.rfGenerator
self.switchPlatform = self.transmittedPower.switchPlatform
self.switchPlatform.setPreset('bridge')
class JitterInjection(object):
'''
Manual steps:
route and amplify the signal from the RF generator.
correctly set the input impedance of the jitter meter
set-up the LF input signal
'''
def __init__(self):
self.jitterMeter = device.Agilent86100a()
#device.Agilent53220a('TCPIP0::172.20.1.206::inst0::INSTR')
assert self.jitterMeter.tryConnect()
self.transmittedPower = TransmittedPower()
self.rfGenerator = self.transmittedPower.rfGenerator
self.switchPlatform = self.transmittedPower.switchPlatform
self.switchPlatform.setPreset('bridge')
def frequencySweep(self,frequencies,transmittedTargetPower):
startTime = time.clock()
rmsJitters = numpy.array([])
transmittedPowers = numpy.array([])
for frequency in frequencies:
self.rfGenerator.setFrequency(frequency)
attainedTransmittedPower = self.transmittedPower.tryTransmittedPower(transmittedTargetPower)
transmittedPowers = numpy.append(transmittedPowers,attainedTransmittedPower)
jitter = self.jitterMeter.measureJitter()
print 'f={frequency:.2e}'.format(frequency=frequency)
rmsJitters = numpy.append(rmsJitters,jitter)
# peakToPeakJitters = numpy.append(peakToPeakJitters,jitter[1])
self.rfGenerator.enableOutput(False)
backgroundJitter = self.jitterMeter.measureJitter()
return rmsJitters,backgroundJitter,transmittedPowers
