def __call__(self, band = None):
if band:
self.f0 = 1e9 * min (band)
self.f1 = 1e9 * max (band)
VI.__call__(self, self.visa, CONFIGURE, self.f0, self.f1)
VI.__call__(self, self.visa, MEASURE, self.f0, self.f1)
return self.Fetch ()
def __init__(self,
band=None, #[Hz]
ref=None, #(dBm)
bw=None, #(Hz)
shape=None,#(?)
noise=None,#[dBm/Hz,Hz]
gain=None, #[dB,Hz]
gpib=20): #GPIB address
VI.__init__(self, ANALYZER,
['band (Hz)',
'reference (dBm)',
'resolution (Hz)',
'variable shape (F)',
'noise (dBm/Hz,Hz)',
'gain (dB,Hz)',
'VISA session',
'error in (no error)'],
['signal & noise (dB vs Hz)',
'peaks (dB,Hz)',
'significance (dB)',
'resolution out (Hz)',
'VISA session out',
'error out'])
self.visa = ('GPIB0::%d::INSTR' % gpib, 0)
self.error = (False, 0, "")
self.band=self.ref=self.bw=self.shape=None
self.noise=self['noise (dBm/Hz,Hz)']
self.gain=self['gain (dB,Hz)']
self (band, ref, bw, noise, gain, shape) # configure the instrument
def __call__(self, frequency, power=None):
"""
Set frequency (GHz) and output power (0dBm).
"""
if power != None: self.power = power
self.session = VI.__call__(self, frequency != None, frequency, self.power, * self.session)
return frequency
def __init__(self, frequency=None, power=None, gpib=11):
"""
Open a session with the device (GPIB address)
"""
VI.__init__(self,
GENERATOR,
['RF on',
'frequency (Hz)',
'power (dBm)',
'VISA session',
'error in (no error)'],
['VISA session out',
'error out'])
self.session = (('GPIB0::%d::INSTR' % gpib, 0), None)
self.power = None
self (frequency, power)
def __call__(self, band=None, ref=None, bw=None, shape=None, noise=None, gain=None):
band = self.band = _default (band, self.band)
ref = self.ref = _default (ref, self.ref)
bw = self.bw = _default (bw, self.bw)
noise = self.noise = _default (noise, self.noise)
gain = self.gain = _default (gain, self.gain)
shape = self.shape = _default (shape, self.shape)
(signal, noise), peaks, margins, bw, self.visa, self.error = VI.__call__(self,
band, ref, bw, shape, noise, gain, self.visa, self.error)
return (signal, noise, peaks, margins, bw)
def __init__(self,
band = LB + HB, # GHz
gpib=20): # GPIB address
VI.__init__(self, PATH, [VISA, MODE, F0, F1], [P])
self.visa = ('GPIB0::%d::INSTR' % gpib, 0)
self (band)
