Keithley 2700 MultiMeter/Switch System
- class pymeasure.instruments.keithley.Keithley2700(adapter, name='Keithley 2700 MultiMeter/Switch System', **kwargs)
Bases:
KeithleyBuffer
,SCPIMixin
,Instrument
Represents the Keithley 2700 Multimeter/Switch System and provides a high-level interface for interacting with the instrument.
keithley = Keithley2700("GPIB::1")
- beep(frequency, duration)
Sounds a system beep.
- Parameters
frequency – A frequency in Hz between 65 Hz and 2 MHz
duration – A time in seconds between 0 and 7.9 seconds
- property buffer_data
Get a numpy array of values from the buffer.
- property buffer_points
Control the number of buffer points. This does not represent actual points in the buffer, but the configuration value instead.
- channels_from_rows_columns(rows, columns, slot=None)
Determine the channel numbers between column(s) and row(s) of the 7709 connection matrix. Returns a list of channel numbers. Only one of the parameters ‘rows’ or ‘columns’ can be “all”
- Parameters
rows – row number or list of numbers; can also be “all”
columns – column number or list of numbers; can also be “all”
slot – slot number (1 or 2) of the 7709 card to be used
- check_errors()
Read all errors from the instrument.
- Returns
List of error entries.
- check_get_errors()
Check for errors after having gotten a property and log them.
Called if
check_get_errors=True
is set for that property.If you override this method, you may choose to raise an Exception for certain errors.
- Returns
List of error entries.
- check_set_errors()
Check for errors after having set a property and log them.
Called if
check_set_errors=True
is set for that property.If you override this method, you may choose to raise an Exception for certain errors.
- Returns
List of error entries.
- clear()
Clear the instrument status byte.
- close_rows_to_columns(rows, columns, slot=None)
Closes (connects) the channels between column(s) and row(s) of the 7709 connection matrix. Only one of the parameters ‘rows’ or ‘columns’ can be “all”
- Parameters
rows – row number or list of numbers; can also be “all”
columns – column number or list of numbers; can also be “all”
slot – slot number (1 or 2) of the 7709 card to be used
- property closed_channels
Parameter that controls the opened and closed channels. All mentioned channels are closed, other channels will be opened.
- property complete
Get the synchronization bit.
This property allows synchronization between a controller and a device. The Operation Complete query places an ASCII character 1 into the device’s Output Queue when all pending selected device operations have been finished.
- config_buffer(points=64, delay=0)
Configures the measurement buffer for a number of points, to be taken with a specified delay.
- Parameters
points – The number of points in the buffer.
delay – The delay time in seconds.
- determine_valid_channels()
Determine what cards are installed into the Keithley 2700 and from that determine what channels are valid.
- disable_buffer()
Disables the connection between measurements and the buffer, but does not abort the measurement process.
- display_closed_channels()
Show the presently closed channels on the display of the Keithley 2700.
- property display_text
A string property that controls the text shown on the display of the Keithley 2700. Text can be up to 12 ASCII characters and must be enabled to show.
- get_state_of_channels(channels)
Get the open or closed state of the specified channels
- Parameters
channels – a list of channel numbers, or single channel number
- property id
Get the identification of the instrument.
- is_buffer_full()
Returns True if the buffer is full of measurements.
- property next_error
Get the next error in the queue. If you want to read and log all errors, use
check_errors()
instead.
- open_all_channels()
Open all channels of the Keithley 2700.
- property open_channels
A parameter that opens the specified list of channels. Can only be set.
- open_rows_to_columns(rows, columns, slot=None)
Opens (disconnects) the channels between column(s) and row(s) of the 7709 connection matrix. Only one of the parameters ‘rows’ or ‘columns’ can be “all”
- Parameters
rows – row number or list of numbers; can also be “all”
columns – column number or list of numbers; can also be “all”
slot – slot number (1 or 2) of the 7709 card to be used
- property options
Property that lists the installed cards in the Keithley 2700. Returns a dict with the integer card numbers on the position.
- read(**kwargs)
Read up to (excluding) read_termination or the whole read buffer.
- read_binary_values(**kwargs)
Read binary values from the device.
- read_bytes(count, **kwargs)
Read a certain number of bytes from the instrument.
- Parameters
count (int) – Number of bytes to read. A value of -1 indicates to read the whole read buffer.
kwargs – Keyword arguments for the adapter.
- Returns bytes
Bytes response of the instrument (including termination).
- reset()
Resets the instrument and clears the queue.
- reset_buffer()
Resets the buffer.
- shutdown()
Brings the instrument to a safe and stable state
- start_buffer()
Starts the buffer.
- property status
Get the status byte and Master Summary Status bit.
- stop_buffer()
Aborts the buffering measurement, by stopping the measurement arming and triggering sequence. If possible, a Selected Device Clear (SDC) is used.
- property text_enabled
A boolean property that controls whether a text message can be shown on the display of the Keithley 2700.
- triad(base_frequency, duration)
Sounds a musical triad using the system beep.
- Parameters
base_frequency – A frequency in Hz between 65 Hz and 1.3 MHz
duration – A time in seconds between 0 and 7.9 seconds
- wait_for(query_delay=None)
Wait for some time. Used by ‘ask’ to wait before reading.
- Parameters
query_delay – Delay between writing and reading in seconds. None is default delay.
- wait_for_buffer(should_stop=<function KeithleyBuffer.<lambda>>, timeout=60, interval=0.1)
Blocks the program, waiting for a full buffer. This function returns early if the
should_stop
function returns True or the timeout is reached before the buffer is full.- Parameters
should_stop – A function that returns True when this function should return early
timeout – A time in seconds after which this function should return early
interval – A time in seconds for how often to check if the buffer is full
- write(command, **kwargs)
Write a string command to the instrument appending write_termination.
- Parameters
command – command string to be sent to the instrument
kwargs – Keyword arguments for the adapter.
- write_binary_values(command, values, *args, **kwargs)
Write binary values to the device.
- Parameters
command – Command to send.
values – The values to transmit.
**kwargs (*args,) – Further arguments to hand to the Adapter.
- write_bytes(content, **kwargs)
Write the bytes content to the instrument.