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
|
#
# 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 strict_range
from .ah2500a import AH2500A
class AH2700A(AH2500A):
""" Andeen Hagerling 2700A Precision Capacitance Bridge implementation
"""
def __init__(self, adapter, name="Andeen Hagerling 2700A Precision Capacitance Bridge",
timeout=5000, **kwargs):
super().__init__(
adapter,
name=name,
timeout=timeout,
**kwargs
)
id = Instrument.measurement(
"*IDN?", """Get the instrument identification """
)
config = Instrument.measurement(
"SHOW ALL",
"""Get the configuration """,
)
frequency = Instrument.control(
"SH FR", "FR %.1f",
"""Control test frequency used for the measurements. Allowed are values between
50 and 20000 Hz. The device selects the closest possible frequency to
the given value.""",
validator=strict_range,
values=[50, 20000],
# typical reply: "FREQUENCY 1200.0 Hz"
get_process=lambda v: float(AH2500A._renumeric.search(v).group(0)),
)
def reset(self):
""" Resets the instrument. """
self.write("*RST")
def trigger(self):
"""
Triggers a new measurement without blocking and waiting for the return
value.
"""
self.write("*TRG")
self._triggered = True
|
