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Production Test Suite - base
Commit 71c09193 authored by Dimitris Lampridis's avatar Dimitris Lampridis
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common/PAGE/Agilent33600A.py 0 → 100644
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from Generator import *
from SineWaveform import SineWaveform
from TTWaveform import TTWaveform
from struct import pack
from time import sleep
from numpy import ndarray
import usbtmc
import Pyro4
import Pyro4.util
"""This class manages the Agilent 33600A waveform generator, offering different ways
to control its output."""
class Agilent33600A(Generator):
def get(self, what):
"""Get an attribute value. Supports Pyro4."""
return self.__getattribute__(what)
def set(self, what, how):
"""Set an attribute value. Supports Pyro4."""
self.__setattr__(what, how)
_parameters = {'idVendor':['USB vendor ID', 'USB vendor ID of the generator', 0x0957, int],
'idProduct':['USB product ID', 'USB product ID of the generator', 0x4807, int],
'to':['Timeout', 'Timeout during read operations', 2, int]}
# These are the functions the generator supports.
functionList = ('SIN', 'SQU', 'RAMP', 'PULS', 'NOIS', 'DC', 'USER')
def __init__(self, *args, **kwargs):
"""The initializer doesn't connect to the device."""
Generator.__init__(self, *args, **kwargs)
self.connected = False
self.adaptDict = {SineWaveform: self.adaptSine,
list: self.adaptData,
tuple: self.adaptData,
ndarray: self.adaptData,
str: self.adaptSavedFunction}
def connect(self):
""" Connect to the device"""
self.comm = usbtmc.Instrument(idVendor = self.idVendor, idProduct = self.idProduct, timeout = self.timeout)
self.comm.open()
self.connected = self.comm.connected
def close(self):
"""Close the connection to the device"""
if self.connected:
return
self.comm.close()
self.connected = self.comm.connected
# utilities
def adaptSavedFunction(self, wave, *args, **kwargs):
"""Play an already uploaded function."""
self.function = ('USER', wave)
return ""
def adaptSine(self, wave, *args, **kwargs):
"""Adapt a SineWaveform to a generator command"""
return "APPL:SIN %f HZ, %f VPP, %f V" % (wave.frequency, wave.amplitude, wave.dc)
def adaptData(self, data, *args, **kwargs):
"""Upload data to the volatile memory of the device and select it"""
self.dataUpload(data, *args, **kwargs)
self.function = ('USER')
self.function = ('USER', 'VOLATILE')
return ''
def play(self, wave, *args, **kwargs):
'''Play a wave'''
cmd = self.adapt(wave, *args, **kwargs)
self.command(cmd)
def command(self, what):
'''Send a (list of) command(s) to the device: a command is a string, and
this function appends automatically a new line.'''
if len(what) == 0:
return
if type(what) is str:
what = (what, )
if not self.connected:
self.connect()
return sum(map(lambda x: self.comm.write("%s\n" % x), what))
# output
@Property
def output():
doc = "Output status of the generator"
def fget(self):
self.command("OUTP?")
output = self.comm.read(2)[0]
return output == "1"
def fset(self, status):
if type(status) is not bool:
return
self.command("OUTP %d" % (1 if status else 0))
return locals()
# output load
@Property
def load50():
doc = "Output load status of the generator"
def fget(self):
self.command("OUTP:LOAD?")
output = self.comm.read(2)[0]
return output == "50"
def fset(self, enable):
if type(enable) is not bool:
return
self.command("OUTP:LOAD %s" % ("50" if enable else "INF"))
return locals()
# sync output
@Property
def sync():
doc = "Sync output status of the generator"
def fget(self):
self.command("OUTP:SYNC?")
output = self.comm.read(2)[0]
return output == "1"
def fset(self, status):
if type(status) is not bool:
return
self.command("OUTP:SYNC %d" % (1 if status else 0))
return locals()
@Property
def function():
doc = "Function used by the generator"
def fget(self):
self.command("FUNC?")
output = self.comm.readline()[:-1] # avoid \n
if output == 'USER':
self.command('FUNC:USER?')
u = self.comm.readline()[:-1] # avoid \n
return (output, u)
return (output, )
def fset(self, f):
if type(f) in (tuple, list):
if len(f) == 2:
f, n = f
else:
return
if type(f) != str:
return
f = f.upper()
if ' ' in f:
f, n = f.split(' ')
else:
n = ''
if f not in self.functionList:
return
self.command("FUNC %s %s" % (f, n))
return locals()
@Property
def frequency():
doc = "Frequency used by the generator"
def fget(self):
self.command("FREQ?")
output = eval(self.comm.readline()[:-1]) # avoid \n
return output
def fset(self, value):
f = ' '.join(parse(value, 'HZ'))
self.command("FREQ %s" % f)
return locals()
@Property
def voltage():
doc = "Output amplitude"
def fget(self):
self.command("VOLT?")
V = eval(self.comm.readline()[:-1]) # avoid \n
self.command("VOLT? MIN")
m = eval(self.comm.readline()[:-1])
self.command("VOLT? MAX")
M = eval(self.comm.readline()[:-1])
return V, m, M
def fset(self, v):
if type(v) is str:
v = v.upper()
if v[:3] in ['MIN', 'MAX']:
self.command('VOLT %s' % v[:3])
return
f = ' '.join(parse(v, 'V'))
self.command("VOLT %s" % f)
return locals()
@Property
def voltageOffset():
doc = "Offset of the output signal"
def fget(self):
self.command("VOLT:OFFS?")
V = eval(self.comm.readline()[:-1]) # avoid \n
self.command("VOLT:OFFS? MIN")
m = eval(self.comm.readline()[:-1])
self.command("VOLT:OFFS? MAX")
M = eval(self.comm.readline()[:-1])
return V, m, M
def fset(self, v):
if type(v) is str:
v = v.upper()
if v[:3] in ['MIN', 'MAX']:
self.command('VOLT:OFFS %s' % v[:3])
return
f = ' '.join(parse(v, 'V'))
self.command("VOLT:OFFS %s" % f)
return locals()
# skipping volt:high volt:low
@Property
def voltageRangeAuto():
doc = "Voltage autoranging for all function. Setter supports also ONCE"
def fget(self):
self.command("VOLT:RANG:AUTO?")
output = self.comm.read(2)[0]
return output == "1"
def fset(self, status):
if type(status) is not bool:
if status != 'ONCE':
return
else:
if status: status = 'ON'
else: status = 'OFF'
self.command("VOLT:RANG:AUTO %s" % status)
return locals()
# skipping volt:high or volt:low
@Property
def squareDutyCycle():
doc = "Duty cycle of a square wave"
def fget(self):
self.command("FUNC:SQU:DCYC?")
V = eval(self.comm.readline()[:-1])
self.command("FUNC:SQU:DCYC? MIN")
m = eval(self.comm.readline()[:-1])
self.command("FUNC:SQU:DCYC? MAX")
M = eval(self.comm.readline()[:-1])
return V, m, M
def fset(self, v):
if type(v) is str:
v = v.upper()
if v[:3] in ['MIN', 'MAX']:
self.command('FUNC:SQU:DCYC %s' % v[:3])
return
self.command("FUNC:SQU:DCYC %f" % v)
return locals()
# data
def dataUpload(self, data, ttw = 0.002):
"""Upload a sequence of integers to the volatile memory of the generator.
TTW is the time to wait between each character of the sequence, which
is transferred in ASCII"""
command = 'DATA:DAC VOLATILE, %s\n' % ', '.join(str(i) for i in data)
self.comm.write(command)
def dataStore(self, destination):
"""Save VOLATILE waveform into 'destination'"""
if type(destination) is not str: return
self.command("DATA:COPY %s" % destination)
@Property
def dataCatalog():
doc = "List of all available arbitrary waveforms"
def fget(self):
self.command('DATA:CAT?')
return tuple(self.comm.readline()[:-1].replace('"', '').split(','))
return locals()
@Property
def dataNVCatalog():
doc = "List of the user defined waveforms store in non-volatile memory"
def fget(self):
self.command('DATA:NVOL:CAT?')
return tuple(self.comm.readline()[:-1].replace('"', '').split(','))
return locals()
@Property
def dataFree():
doc = "Free arbitrary waveform slots in non-volatile memory"
def fget(self):
self.command('DATA:NVOL:FREE?')
return int(self.comm.readline()[:-1])
return locals()
def dataDel(self, what):
"""Delete the waveform 'what'. If 'what' is all, then delete everything."""
if type(what) is not str: return
if what.upper() == 'ALL':
self.command('DATA:DEL:ALL')
else:
self.command('DATA:DEL %s' % what)
def sweep(self, interval, waves, callback = None):
'''Commodity function: play all the waves in 'waves' with a pause of
'interval' seconds between each. If present, calls 'callback' passing
the wave as a first parameter.'''
for w in waves:
self.play(w)
sleep(interval)
if callback is not None:
callback(w)
# specify the name of the module
name = 'Agilent 33250A'
# the interesting class
target = Agilent33250A
import sys
import commands
def launch():
g = target()
g.device = sys.argv[1]
g.connect()
hn = commands.getoutput('hostname')
daemon=Pyro4.Daemon(host = hn)
myUri = daemon.register(g)
ns=Pyro4.locateNS()
ns.register("Agilent33250A", myUri)
daemon.requestLoop()
if __name__ == '__main__':
launch()
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