def set_channel(self, **kwargs):
# Set up channel
settings = {} #in case of failure, settings is updated only at the end
for key, current_value in self.settings.items():
settings[key] = kwargs[key] if key in kwargs else current_value
#checks
check_kwargs_scope(**kwargs)
# handle = chandle
_channel = ctypes.c_int16(
ps.PS2000_CHANNEL[channel_index[self.source]])
_coupling_type = ctypes.c_int16(
ps.PICO_COUPLING[coupling_type_index[settings['coupling_type']]])
_chRange = ctypes.c_int16(
ps.PS2000_VOLTAGE_RANGE[range_index[settings['chRange']]])
self.status["setCh"] = ps.ps2000_set_channel(self.chandle, _channel, 1,
_coupling_type, _chRange)
assert_pico2000_ok(self.status["setCh"])
self.settings = settings
self._chRange = _chRange
# Returns handle to chandle for use in future API functions status["openUnit"] = ps.ps2000_open_unit() assert_pico2000_ok(status["openUnit"]) # Create chandle for use chandle = ctypes.c_int16(status["openUnit"]) # Set up channel A # handle = chandle # channel = PS2000_CHANNEL_A = 0 # enabled = 1 # coupling type = PS2000_DC = 1 # range = PS2000_2V = 7 # analogue offset = 0 V chARange = 7 status["setChA"] = ps.ps2000_set_channel(chandle, 0, 1, 1, chARange) assert_pico2000_ok(status["setChA"]) # Set up channel B # handle = chandle # channel = PS2000_CHANNEL_B = 1 # enabled = 1 # coupling type = PS2000_DC = 1 # range = PS2000_2V = 7 # analogue offset = 0 V chBRange = 7 status["setChB"] = ps.ps2000_set_channel(chandle, 1, 1, 1, chBRange) assert_pico2000_ok(status["setChB"]) # Set up single trigger # handle = chandle