def __init__(self, ip="10.25.124.252", gpib_address=10, loglevel=20):
"""
Connect to the power supply via Prologix GPIB connector
This class is based on information provided by the AFG3021B Programmer Manual.
For more information, please see AFG3000 Series Arbitrary/Function Generators
Programmer Manual offered by Tecktronix.
Keyword Args:
ip (str): IP adress of the Prologix GPIB connector
gpib_address (int): The GPIB address of the power supply
connected to the Prologix connector
"""
try:
gpib = PrologixGPIBEthernet(ip, timeout=15)
gpib.connect()
except OSError:
raise ValueError(
'Connection to plx_gpib_ethernet failed, check connection!')
try:
gpib.select(gpib_address)
except OSError:
raise ValueError(
'Connection to plx_gpib_ethernet failed, check IP address!')
self.logger = loggers.get_logger(loglevel)
self.instrument = gpib
def __init__(self, ip="10.25.123.111", gpib_address=15, loglevel=20):
"""
Connect to the power supply via Prologix GPIB connector
Keyword Args:
ip (str): IP adress of the Prologix GPIB connector
gpib_address (int): The GPIB address of the power supply
connected to the Prologix connector
"""
gpib = PrologixGPIBEthernet(ip)
gpib.connect()
gpib.select(gpib_address)
self.logger = loggers.get_logger(loglevel)
self.instrument = gpib
class Gigatronics2520A():
def __init__(self, prologix=False, gpib_addr=GPIB_ADDR_2520A):
if not prologix:
self.gpib = PrologixGPIBEthernet('192.168.1.128')
self.gpib.connect()
else:
self.gpib = prologix
self.gpib_addr = gpib_addr
self.gpib.select(self.gpib_addr)
self.gpib.write('*RST')
assert '2520A' in self.gpib.query('*IDN?')
def set_cw_frequency(self, freq):
self.gpib.select(self.gpib_addr)
self.gpib.write('SOURCE:FREQUENCY:FIX {}HZ'.format(str(int(freq))))
f_readback = float(self.gpib.query('SOURCE:FREQUENCY?'))
assert f_readback == freq
def set_cw_power(self, power_dbm):
self.gpib.select(self.gpib_addr)
self.gpib.write('SOURCE:POWER:LEVEL:IMM:AMPLITUDE {}DBM'.format(
str(int(power_dbm))))
p_readback = float(
self.gpib.query('SOURCE:POWER:LEVEL:IMM:AMPLITUDE?'))
assert int(p_readback) == power_dbm
def output_on(self):
self.gpib.select(self.gpib_addr)
self.gpib.write('OUTPUT ON')
assert float(self.gpib.query('OUTPUT:STATE?')) == 1
def output_off(self):
self.gpib.select(self.gpib_addr)
self.gpib.write('OUTPUT OFF')
assert float(self.gpib.query('OUTPUT:STATE?')) == 0
if __name__ == '__main__':
parser = argparse.ArgumentParser(description='scalar network analyzer')
parser.add_argument('--cal',
default=False,
help='specify name of calibration file')
parser.add_argument('--ddir',
default='./data/',
help='specify name of calibration file')
parser.add_argument('filename', help='specify name of output file')
args = parser.parse_args()
prologix = PrologixGPIBEthernet('192.168.1.128', timeout=10)
prologix.connect()
meter = AgilentE4418B(prologix=prologix)
synth = Gigatronics2520A(prologix=prologix)
freqs = np.arange(1e9, 20.1e9, .25e9)
synth.set_cw_power(0)
synth.output_on()
meas = np.empty_like(freqs)
for (i, f) in enumerate(freqs):
synth.set_cw_frequency(f)
meas[i] = meter.read_power(f)
print('f: {}, p: {}'.format(f / 1e9, meas[i]))
class FSP30():
def __init__(self, prologix=False, gpib_addr=GPIB_ADDR_FSP30):
if not prologix:
self.gpib = PrologixGPIBEthernet('192.168.1.128')
self.gpib.connect()
else:
self.gpib = prologix
self.gpib_addr = gpib_addr
self.gpib.select(self.gpib_addr)
self.preset()
pdb.set_trace()
assert 'FSP-30' in self.gpib.query('*IDN?')
def read_peak(self):
self.gpib.select(self.gpib_addr)
self.gpib.write('INIT:IMM;*WAI')
self.gpib.write('CALC:MARK:MAX')
f = float(self.gpib.query('CALC:MARK:X?'))
amp = float(self.gpib.query('CALC:MARK:Y?'))
return {'freq': f, 'amp': amp}
def get_sweep(self):
self.gpib.select(self.gpib_addr)
self.gpib.write('FORM:DATA: REAL,32')
self.gpib.write('INIT:IMM;*WAI')
vals = self.gpib.query('TRACE? TRACE1')
# this probably won't work, I need to read back the sweep size
# see FSP operator manual page 4.259
return vals
def set_reflevel(self, reflevel):
self.gpib.select(self.gpib_addr)
# sets ref level, units of dBm
self.gpib.write('DISP:WIND:TRAC:Y:SPAC LOG')
self.gpib.write('DISP:WIND:TRAC:Y:RLEV ' + str(reflevel) + 'dBm')
def set_vrange(self, vrange):
self.gpib.select(self.gpib_addr)
self.gpib.write('DISP:WIND:TRAC:Y' + str(vdiv) + ' dB')
def set_span(self, span, center, points):
self.gpib.select(self.gpib_addr)
self.gpib.write("SWE:TIME:AUTO ON")
self.gpib.write("SENSe:SWEep:POINts " + str(points))
self.gpib.write("SENSe:FREQuency:CENTer " + str(center) + 'Hz')
self.gpib.write("SENSe:FREQuency:SPAN " + str(span) + 'Hz')
def get_span(self):
self.gpib.select(self.gpib_addr)
points = int(self.gpib.query("SENSe:SWEep:POINts?"))
center = float(self.gpib.query("SENSe:FREQuency:CENTer?"))
span = float(self.gpib.query("SENSe:FREQuency:SPAN?"))
return linspace(center - span / 2.0, center + span / 2.0, points) * 1e9
def preset(self):
self.gpib.select(self.gpib_addr)
self.gpib.write('*RST')
self.gpib.write('*CLS')
self.gpib.write('INIT:CONT OFF')