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
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')