def sample_frequency(self, frequency):
"""Sets the sample frequency in Hz (None is Trigger)"""
assert type(frequency) in [float, int, type(None)]
if frequency is None:
index = 14 # Trigger
else:
frequency = discreteTruncate(frequency, SR830.SAMPLE_FREQUENCIES)
index = SR830.SAMPLE_FREQUENCIES.index(frequency)
self.write("SRAT%f" % index)
def set_IF_bandwidth(self, bandwidth):
""" Sets the resolution bandwidth (IF bandwidth) """
allowedBandwidth = [10, 30, 100, 300, 1000, 3000, 3700, 6000]
bandwidth = discreteTruncate(bandwidth, allowedBandwidth)
if bandwidth:
self.write("IFBW%d" % bandwidth)
else:
raise RangeException("Maximum IF bandwidth (6000) for Agilent "
"8722ES exceeded")
def set_IF_bandwidth(self, bandwidth):
""" Sets the resolution bandwidth (IF bandwidth) """
allowedBandwidth = [10, 30, 100, 300, 1000, 3000, 3700, 6000]
bandwidth = discreteTruncate(bandwidth, allowedBandwidth)
if bandwidth:
self.write("IFBW%d" % bandwidth)
else:
raise RangeException("Maximum IF bandwidth (6000) for Agilent "
"8722ES exceeded")
def sample_frequency(self, frequency):
"""Sets the sample frequency in Hz (None is Trigger)"""
assert type(frequency) in [float, int, type(None)]
if frequency is None:
index = 14 # Trigger
else:
frequency = discreteTruncate(frequency, SR830.SAMPLE_FREQUENCIES)
index = SR830.SAMPLE_FREQUENCIES.index(frequency)
self.write("SRAT%f" % index)
def set_scaling(self, channel, precent, expand=0):
""" Sets the offset of a channel (X=1, Y=2, R=3) to a
certain precent (-105% to 105%) of the signal, with
an optional expansion term (0, 10=1, 100=2)
"""
if channel not in self.CHANNELS:
raise ValueError('SR830 channel is invalid')
channel = self.CHANNELS.index(channel) + 1
expand = discreteTruncate(expand, self.EXPANSION_VALUES)
self.write("OEXP %i,%.2f,%i" % (channel, precent, expand))
def scan_points(self, points):
""" Sets the number of scan points, truncating to an allowed
value if not properly provided
"""
points = discreteTruncate(points, Agilent8722ES.SCAN_POINT_VALUES)
if points:
self.write("POIN%d" % points)
else:
raise RangeException("Maximum scan points (1601) for"
" Agilent 8722ES exceeded")
def scan_points(self, points):
""" Sets the number of scan points, truncating to an allowed
value if not properly provided
"""
points = discreteTruncate(points, Agilent8722ES.SCAN_POINT_VALUES)
if points:
self.write("POIN%d" % points)
else:
raise RangeException("Maximum scan points (1601) for"
" Agilent 8722ES exceeded")
def set_scaling(self, channel, precent, expand=0):
""" Sets the offset of a channel (X=1, Y=2, R=3) to a
certain precent (-105% to 105%) of the signal, with
an optional expansion term (0, 10=1, 100=2)
"""
if channel not in self.CHANNELS:
raise ValueError('SR830 channel is invalid')
channel = self.CHANNELS.index(channel) + 1
expand = discreteTruncate(expand, self.EXPANSION_VALUES)
self.write("OEXP %i,%.2f,%i" % (channel, precent, expand))
