acquisition methods

Methods used for data acquisition

connect_QubicStudio(ip=None)

connect to QubicStudio. The default behaviour is to check first if there is already a connection, and then to use that connection. The return value client can be used in subsequent calls to QubicStudio.

• the optional keyword ip can be used to specifiy the IP address of the QubicStudio machine. The default is the LaboMM machine.

wait_a_bit(pausetime=0.3)

Pause before continuing. The default is 0.3 seconds.

make_Vbias(cycle_voltage=True,ncycles=1, vmin=5.0,vmax=8.0,dv=0.04,lowhigh=True)

make the list of bias voltages used during the I-V curve measurement. Optional keywords are the following:

• vmin: low end of the bias range
• vmax: high end of the bias range
• dv: step size of voltage increments/decrements
• cycle_voltage: cycle the voltage back to the starting value (from low to high to low, or the reverse).
• ncycles: the number of I-V cycles. Note, if cycling the voltage back to the starting value, a single cycle will give you two I-V curves, one going up, and one going down.
• lowhigh: vary the bias voltage from low to high (default is True). If False, the bias voltage begins at the high end and reduces to the lowest value.

get_iv_data()

run an I-V measurement

see also the wrapper script run_iv.py in the example scripts

plot_asd(TES=1,tinteg=None,ntimelines=10)

take timeline data continuously and calculate the Amplitude Spectral Density.

options

• TES: this is the TES to monitor (default TES=1)
• tinteg: the integration time. If not specified, the integration time is taken from whatever was set earlier using assign_integration_time() see assignmement methods. The default is 0.1 seconds.
• ntimelines: the number of loops to make for taking timeline data. If set to anything which is not a positive non-zero integer, the loop will run indefinitely. Use Ctrl-C to break out of the loop.