def initialiseParameters(self):
# Communiate with the analog powermeter
# self.apm = AnalogComm(analogpm_add)
# self.APM_CHANNEL = 1
# # Communicate with the usb counter
self.counter = Countercomm(counter_add)
self.counter.set_gate_time(30)
# Create a variable to store the average value & number of averages of the analog powermeter
self.average_apm = 0
self.NUM_OF_AVG = 20
# Creating the objects voltage_handler
self.voltage_handler = [0, 0, 0, 0, 0, 0, 0]
for i in range(1, 7):
self.voltage_handler[i] = VoltageHandler(MAX_STEP_VOLTAGE[i], i)
# Initialise the variable set_voltage: These are the values that we want to set the DAC to.
# Note: In voltage 6, it is the set_value (from GUI) + the fine adjustment for locking
self.set_voltage = [0, 0, 0, 0, 0, 0, 0]
# Initialise the offset adj voltage & correction direction
self.offset_adj_voltage = [0, 0]
self.offset_adj_direction = 1 #1 for positive, -1 for negative direction
self.count_adj_steps = 0
# Lock request variable (1: asking for lock, 0: nothing)
self.lock_request = 0
# Create the locking delay variable & locking mode
self.LOCKING_DELAY = 5
self.lock_delay_counter = 0
self.locking_mode = 1 # Starts locking from voltage 6
self.locking_mode_max = self.locking_mode + MAX_LOCKING_TRIES
return (pac)
def return_initial():
print(
'Setting the Piezo back to the initial values before the measurement')
setV(V0x, V0y)
print('Setting rf power to 810AOM back to originial values')
dds_810.set_power(init_power)
##############################################################################################
#initial miniusb counter device
miniusb_port = '/dev/serial/by-id/usb-Centre_for_Quantum_Technologies_USB_Counter_Ucnt-QO10-if00'
miniusb = Countercomm(miniusb_port)
miniusb.set_gate_time(30)
#initiate analogI0
analogIO_port = '/dev/serial/by-id/usb-Centre_for_Quantum_Technologies_Analog_Mini_IO_Unit_MIO-QO13-if00'
analogIO = AnalogComm(analogIO_port)
#filename
filename = 'landscape_ext_810_c2.dat'
#Parmeters defnition
#Retrieve current voltage set to PZT as the initial VX0,VY0
socket.send("CheckVolt 5")
V0y = float((socket.recv()).split()[-1])
socket.send("CheckVolt 6")
V0x = float((socket.recv()).split()[-1])
message = socket.recv()
def getCount(miniusb, channel=0, average=10):
counts = []
for i in range(average):
counts.append(miniusb.get_counts(channel))
average_count = np.mean(counts)
return average_count
##############################################################################################
#initial miniusb counter device
address_port = '/dev/serial/by-id/usb-Centre_for_Quantum_Technologies_USB_Counter_Ucnt-QO10-if00'
miniusb = Countercomm(address_port)
#Parmeters defnition
#Retrieve current voltage set to PZT as the initial VX0,VY0
socket.send("CheckVolt 5")
V0y = float((socket.recv()).split()[-1])
socket.send("CheckVolt 6")
V0x = float((socket.recv()).split()[-1])
print('Initial Voltage: ', V0x, V0y)
#Scanning
rangeVx = 0.1
rangeVy = 0.1
stepV = 0.01
numStepx = int(rangeVx / stepV)
numStepy = int(rangeVy / stepV)
xgrid = np.arange(-numStepx, numStepx + 1) * stepV