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#
# This file is part of the PyMeasure package.
#
# Copyright (c) 2013-2024 PyMeasure Developers
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
from pymeasure.instruments import Instrument
from pymeasure.instruments.validators import truncated_range, truncated_discrete_set
class SR510(Instrument):
TIME_CONSTANTS = {1e-3: 1, 3e-3: 2, 10e-3: 3, 30e-3: 4, 100e-3: 5,
300e-3: 6, 1: 7, 3: 8, 10: 9, 30: 10, 100: 11, }
SENSITIVITIES = {10e-9: 1, 20e-9: 2, 50e-9: 3, 100e-9: 4, 200e-9: 5, 500e-9: 6,
1e-6: 7, 2e-6: 8, 5e-6: 9, 10e-6: 10, 20e-6: 11, 50e-6: 12, 100e-6: 13,
200e-6: 14, 500e-6: 15, 1e-3: 16, 2e-3: 17, 5e-3: 18, 10e-3: 19, 20e-3: 20,
50e-3: 21, 100e-3: 22, 200e-3: 23, 500e-3: 24, }
phase = Instrument.control(
"P", "P %g",
"""A float property that represents the SR510 reference to input
phase offset in degrees. Queries return values between -180 and
180 degrees. This property can be set with a range of values
between -999 to 999 degrees. Set values are mapped internal in the
lockin to -180 and 180 degrees.""",
validator=truncated_range,
values=[-999, 999],
)
time_constant = Instrument.control(
"T1", "T1,%d",
"""A float property that represents the SR510 PRE filter time constant.
This property can be set.""",
validator=truncated_discrete_set,
values=TIME_CONSTANTS,
map_values=True,
)
sensitivity = Instrument.control(
"G", "G%d",
"""A float property that represents the SR510 sensitivity value.
This property can be set.""",
validator=truncated_discrete_set,
values=SENSITIVITIES,
map_values=True,
)
frequency = Instrument.measurement(
"F",
"""A float property representing the SR510 input reference frequency""",
)
status = Instrument.measurement(
"Y",
"""A string property representing the bits set within the SR510 status byte""",
get_process=lambda s: bin(int(s))[2:],
)
output = Instrument.measurement(
"Q",
"""A float property that represents the SR510 output voltage in Volts.""",
)
def __init__(self, adapter, name="Stanford Research Systems SR510 Lock-in amplifier",
**kwargs):
kwargs.setdefault('write_termination', '\r')
super().__init__(
adapter,
name,
includeSCPI=False,
**kwargs,
)
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