Picowatt¶
PicowattAVS47
Resistance Bridge¶
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class
instruments.picowatt.
PicowattAVS47
(filelike)[source]¶ The Picowatt AVS 47 is a resistance bridge used to measure the resistance of low-temperature sensors.
Example usage:
>>> import instruments as ik >>> bridge = ik.picowatt.PicowattAVS47.open_gpibusb('/dev/ttyUSB0', 1) >>> print bridge.sensor[0].resistance
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class
InputSource
[source]¶ Enum containing valid input source modes for the AVS 47
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actual
= 1¶
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ground
= 0¶
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reference
= 2¶
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class
Sensor
(parent, idx)[source]¶ Class representing a sensor on the PicowattAVS47
Warning
This class should NOT be manually created by the user. It is designed to be initialized by the
PicowattAVS47
class.-
resistance
¶ Gets the resistance. It first ensures that the next measurement reading is up to date by first sending the “ADC” command.
Units: \(\Omega\) (ohms) Return type: Quantity
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display
¶ Gets/sets the sensor that is displayed on the front panel.
Valid display sensor values are 0 through 7 (inclusive).
Type: int
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excitation
¶ Gets/sets the excitation sensor number.
Valid excitation sensor values are 0 through 7 (inclusive).
Type: int
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input_source
¶ Gets/sets the input source.
Type: PicowattAVS47.InputSource
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mux_channel
¶ Gets/sets the multiplexer sensor number. It is recommended that you ground the input before switching the multiplexer channel.
Valid mux channel values are 0 through 7 (inclusive).
Type: int
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remote
¶ Gets/sets the remote mode state.
Enabling the remote mode allows all settings to be changed by computer interface and locks-out the front panel.
Type: bool
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sensor
¶ Gets a specific sensor object. The desired sensor is specified like one would access a list.
Return type: Sensor
See also
PicowattAVS47
for an example using this property.
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class