1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
#
# 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.srs.sr830 import SR830
def test_id():
"""Verify the communication of the device type."""
with expected_protocol(
SR830,
[("*IDN?", "Stanford_Research_Systems,SR830,s/n12345,ver1.07"),],
) as inst:
assert inst.id == "Stanford_Research_Systems,SR830,s/n12345,ver1.07"
@pytest.mark.parametrize("number, value", (
("0", 2e-9),
("14", 100e-6),
("25", 0.5),
))
def test_sensitivity(number, value):
"""Verify the communication of the sensitivity getter."""
with expected_protocol(
SR830,
[("SENS?", number),],
) as inst:
assert inst.sensitivity == pytest.approx(value)
def test_frequency():
"""Verify the communication of the frequency getter."""
with expected_protocol(
SR830,
[("FREQ?", "121.98"),],
) as inst:
assert inst.frequency == pytest.approx(121.98)
def test_snap():
"""Verify the communication of the measurement values."""
with expected_protocol(
SR830,
[("SNAP? 1,2", "-4.17234e-007,-5.9605e-007"),],
) as inst:
xy = inst.xy
assert len(xy) == 2
assert xy[0] == pytest.approx(-4.17234e-007)
assert xy[1] == pytest.approx(-5.9605e-007)
def test_get_scaling():
"""Verify the communication of the X channel scaling settings."""
with expected_protocol(
SR830,
[("OEXP? 1", "9.7,1"),],
) as inst:
offset, expand = inst.get_scaling("X")
assert offset == pytest.approx(9.7)
assert expand == pytest.approx(10)
def test_output_conversion():
"""Verify the communication of the X channel value with conversion."""
with expected_protocol(
SR830,
[("OEXP? 1", "10,1"),
("SENS?", "19"),
("OUTP?1", "-0.000500266"),
],
) as inst:
conv = inst.output_conversion("X")
assert conv(inst.x) == pytest.approx(-2.66e-7)
|
