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instruments/AG34972A.py
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from abstract_instrument import abstract_instrument
import socket
#==============================================================================
ALL_VAL_TYPE = "DCV, ACV, DCI, ACI, RES2W, RES4W, FREQ"
#==============================================================================
class AG34972A(abstract_instrument):
def __init__(self, adress="192.168.0.72", vtype="DCV"):
self.adress = adress
self.port = 5025
self.vtype = vtype
def model(self):
self.send("*IDN?")
return self.read()
def connect(self):
try:
print('Connecting to device @%s:%s...' %(self.adress, self.port))
self.sock = socket.socket(socket.AF_INET,
socket.SOCK_STREAM,
socket.IPPROTO_TCP)
self.sock.settimeout(2.0) # Don't hang around forever
self.sock.connect((self.adress, self.port))
print(' --> Ok')
print(self.model())
if self.vtype == "DCV":
self.send("CONF:VOLT:DC (@102:103)")
elif self.vtype == "ACV":
self.send("CONF:VOLT:AC (@102:103)")
elif self.vtype == "DCI":
self.send("CONF:CURR:DC (@102:103)")
elif self.vtype == "ACI":
self.send("CONF:CURR:AC (@102:103)")
elif self.vtype == "RES2W":
self.send("CONF:RES (@102:103)")
elif self.vtype == "RES4W":
self.send("CONF:FRES (@102:103)")
elif self.vtype == "FREQ":
self.send("CONF:FREQ (@102:103)")
else:
print("Wrong -v argument")
raise
except socket.timeout:
print("Socket timeout error during connection.")
raise
except socket.error as er:
print("Socket error during connection: " + str(er))
raise
except Exception as er:
print("Unexpected error during connection: " + str(er))
raise
def getValue(self):
self.send("MEAS? AUTO,DEF,(@102:103)")
return self.read()
def read(self):
ans = ''
nb_data_list = []
nb_data = ''
try:
while ans != '
':
ans = self.sock.recv(1)
nb_data_list.append(ans) # Return the number of data
list_size = len(nb_data_list)
for j in range (0, list_size):
nb_data = nb_data+nb_data_list[j]
return nb_data
except socket.timeout:
print "Socket timeout error when reading."
raise
def disconnect(self):
self.send('*RST')
self.sock.close()
def send(self, command):
self.sock.send("%s
"%command)
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