def __init__(self, name, address, wavemeter, reset=False):
logging.debug('Initializing fiber switch on port %s.' % address)
Instrument.__init__(self, name, tags=['physical'])
self._visainstrument = SerialInstrument(address)
self._visainstrument.baud_rate = 115200
self._visainstrument.term_chars = '\n'
self.wait_time = 0.3
self._wavemeter = wavemeter
self.add_parameter('active_port',
type=types.IntType,
flags=Instrument.FLAG_GETSET,
minval=1, maxval=2)
self.add_parameter('port1_wavelength',
type=types.FloatType,
flags=Instrument.FLAG_GET,
units='nm')
self.add_parameter('port2_wavelength',
type=types.FloatType,
flags=Instrument.FLAG_GET,
units='nm')
self.add_parameter('port1_power',
type=types.FloatType,
flags=Instrument.FLAG_GET,
units='mW')
self.add_parameter('port2_power',
type=types.FloatType,
flags=Instrument.FLAG_GET,
units='mW')
if reset:
self.reset()
else:
self.get_all()
def __init__(self, PortName, baud_rate, data_bits, stop_bits, parity,
term_chars, Echoed, ReportsStatus):
"PortName = string of VISA resource descriptor or Allias"
VISABus.__init__(self, PortName)
self.f = SerialInstrument(PortName,
baud_rate=baud_rate,
data_bits=data_bits,
stop_bits=stop_bits,
parity=parity,
term_chars=term_chars)
#print self.deviceIBName, ':clearing the device buffer...'
#self.f.clear()
self.echoed = Echoed # sets whether the transmissions to the device are achoed back to the interface
self.reportsStatus = ReportsStatus # sets whether the transmissions
return
class Thorlabs_FiberSwitch(Instrument):
'''
Thorlabs Fiber Switch
The switch is being used to switch between two inputs for a connected
wavemeter. The wavemeter reading should be accessed through this wrapper
so that the correct reading is given for the specified port and because
it will block access during that time for other readings.
When creating the instrument the used wavemeter should be specified.
'''
def __init__(self, name, address, wavemeter, reset=False):
logging.debug('Initializing fiber switch on port %s.' % address)
Instrument.__init__(self, name, tags=['physical'])
self._visainstrument = SerialInstrument(address)
self._visainstrument.baud_rate = 115200
self._visainstrument.term_chars = '\n'
self.wait_time = 0.3
self._wavemeter = wavemeter
self.add_parameter('active_port',
type=types.IntType,
flags=Instrument.FLAG_GETSET,
minval=1, maxval=2)
self.add_parameter('port1_wavelength',
type=types.FloatType,
flags=Instrument.FLAG_GET,
units='nm')
self.add_parameter('port2_wavelength',
type=types.FloatType,
flags=Instrument.FLAG_GET,
units='nm')
self.add_parameter('port1_power',
type=types.FloatType,
flags=Instrument.FLAG_GET,
units='mW')
self.add_parameter('port2_power',
type=types.FloatType,
flags=Instrument.FLAG_GET,
units='mW')
if reset:
self.reset()
else:
self.get_all()
#### initialization related
def reset(self):
print __name__ + ' : resetting instrument'
def get_all(self):
print __name__ + ' : reading all settings from instrument'
self.get_active_port()
self.get_port1_wavelength()
self.get_port1_power()
self.get_port2_wavelength()
self.get_port2_power()
#### communication with machine
def do_get_active_port(self):
return self._visainstrument.ask('S?')
def do_set_active_port(self, port):
self._visainstrument.write('S %i' %port)
if self.get_active_port() == port:
return True
else:
raise Warning('The switch did not reply with the expected port.')
def do_get_port1_wavelength(self):
if self.get_active_port() == 2:
self.set_active_port(1)
msleep(self.wait_time)
return self._wavemeter.get_wavelength()
def do_get_port2_wavelength(self):
if self.get_active_port() == 1:
self.set_active_port(2)
msleep(self.wait_time)
return self._wavemeter.get_wavelength()
def do_get_port1_power(self):
if self.get_active_port()==2:
self.set_active_port(1)
msleep(self.wait_time)
return self._wavemeter.get_power()
def do_get_port2_power(self):
if self.get_active_port()==1:
self.set_active_port(2)
msleep(self.wait_time)
return self._wavemeter.get_power()
