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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.
#
import pytest
from pymeasure.test import expected_protocol
from pymeasure.instruments.keithley.keithley2000 import Keithley2000
def test_voltage_read():
with expected_protocol(
Keithley2000,
[(":READ?", "3.1415")],
) as inst:
assert inst.voltage == pytest.approx(3.1415)
def test_voltage_range():
with expected_protocol(
Keithley2000,
[(":SENS:VOLT:RANG?", "955"),
(":SENS:VOLT:RANG:AUTO 0;:SENS:VOLT:RANG 234", None)
],
) as inst:
assert inst.voltage_range == 955
inst.voltage_range = 234
def test_voltage_range_trunc():
with expected_protocol(
Keithley2000,
[(":SENS:VOLT:RANG:AUTO 0;:SENS:VOLT:RANG 1010", None),
(":SENS:VOLT:RANG?", "1010"),
],
) as inst:
inst.voltage_range = 3333 # too large, gets truncated
assert inst.voltage_range == 1010
def test_mode():
"Confirm that mode string mapping works correctly"
with expected_protocol(
Keithley2000,
[(":CONF?", "VOLT:AC"),
(":CONF:FRES", None),
],
) as inst:
assert inst.mode == 'voltage ac'
inst.mode = 'resistance 4W'
def test_measure_voltage():
with expected_protocol(
Keithley2000,
[(":CONF:VOLT:AC", None),
(":SENS:VOLT:RANG:AUTO 0;:SENS:VOLT:AC:RANG 300", None),
],
) as inst:
inst.measure_voltage(max_voltage=300, ac=True)
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