The pfeiffer_qmg422 module¶
Autogenerated API documentation for pfeiffer_qmg422¶
This module contains the driver code for the QMG422 control box for a pfeiffer mass-spectrometer. The code should in principle work for multiple type of electronics. It has so far been tested with a qme-125 box and a qme-??? box. The module is ment as a driver and has very little function in itself. The module is ment to be used as a sub-module for a large program providing the functionality to actually use the mass-spectrometer.
Known bugs: Not all code has a proper distinction between the various electronics. The qme-125 has many limitations compared to the qme-??? and these limitations are not always properly expressed in the code or the output of the module
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class
PyExpLabSys.drivers.pfeiffer_qmg422.
qmg_422
(port='/dev/ttyS0', speed=19200)[source]¶ Bases:
object
The actual driver class.
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comm
(command)[source]¶ Communicates with Baltzers/Pferiffer Mass Spectrometer
Implements the low-level protocol for RS-232 communication with the instrument. High-level protocol can be implemented using this as a helper
Parameters: command (str) – The command to send Returns: The reply associated with the last command Return type: str
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communication_mode
(computer_control=False)[source]¶ Returns and sets the communication mode.
Parameters: computer_control (bool) – Activates ASCII communication with the device Returns: The current communication mode Return type: str
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simulation
()[source]¶ Chekcs wheter the instruments returns real or simulated data
Returns: Message telling whether the device is in simulation mode Return type: str
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set_channel
(channel)[source]¶ Set the current channel :param channel: The channel number :type channel: integer
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read_preamp_range
()[source]¶ Read the preamp range This function is not fully implemented :return: The preamp range :rtype: str
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read_timestep
()[source]¶ Reads the integration period of a measurement :return: The integration period in non-physical unit :rtype: str
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sem_status
(voltage=-1, turn_off=False, turn_on=False)[source]¶ Get or set the SEM status :param voltage: The wanted SEM-voltage :type voltage: integer :param turn_off: If True SEM will be turned on (unless turn_of==True) :type turn_off: boolean :param turn_on: If True SEM will be turned off (unless turn_on==True) :type turn_on: boolean :return: The SEM voltage, The SEM status, True means voltage on :rtype: integer, boolan
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emission_status
(current=-1, turn_off=False, turn_on=False)[source]¶ Get or set the emission status. :param current: The wanted emission status. Only works for QME??? :type current: integer :param turn_off: If True emission will be turned on (unless turn_of==True) :type turn_off: boolean :param turn_on: If True emission will be turned off (unless turn_on==True) :type turn_on: boolean :return: The emission value (for QME???), The emission status, True means filament on :rtype: integer, boolan
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detector_status
(SEM=False, faraday_cup=False)[source]¶ Choose between SEM and Faraday cup measurements
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config_channel
(channel, mass=-1, speed=-1, enable='', amp_range=0)[source]¶ Config a MS channel for measurement
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