2.3.3.3.143. NXiv_bias¶
Status:
base class, extends NXobject
Description:
Application definition for bias devices.
Symbols:
No symbol table
- Groups cited:
Structure:
bias: (optional) NX_NUMBER {units=NX_VOLTAGE}
Applied a voltage between tip and sample.
tunneling_resistor: (optional) NX_NUMBER {units=NX_ANY}
The ratio between the tunneling current at the sample surface and the bias vol ...
The ratio between the tunneling current at the sample surface and the bias voltage applied between the sample and the tip.
calibration: (optional) NX_NUMBER
Calibration of the Bias output (V/V).
offset: (optional) NX_NUMBER {units=NX_VOLTAGE}
Allows compensating for an offset in Bias. Hardware parameter offset.
modulated_signal_bias: (optional) NX_NUMBER {units=NX_VOLTAGE}
Sets the amplitude (in physical units of the modulated signal) of the sine ...
Sets the amplitude (in physical units of the modulated signal) of the sine modulation.
channels: (optional) NX_CHAR
Select the channels to record.
reset_bias: (optional) NX_BOOLEAN
When selected, the Bias voltage returns to the initial value (before starting ...
When selected, the Bias voltage returns to the initial value (before starting the sweep) at the end of the spectroscopy measurement (default). When not selected, Bias remains at the last value of the sweep. This is useful e.g. when combining several sweep segments. Example for an automated measurement (using Programming Interface): switch off Z-Controller, start spectroscopy sweep segments (only fwd sweep, no reset bias), set bias back to initial value, switch on Z-Controller.
record_final_z: (optional) NX_BOOLEAN
Select whether to record the Z position during Z averaging time at the end of ...
Select whether to record the Z position during Z averaging time at the end of the sweep (after Z control time) and store the average value in the header of the file when saving. Using this option increases the sweep time by Z averaging time.
lock_in_run: (optional) NX_BOOLEAN
Select whether to set the Lock-In to run during the measurement. When using th ...
Select whether to set the Lock-In to run during the measurement. When using this feature, make sure the Lock-In is configured correctly and settling times are set to twice the Lock-In period at least. This option is ignored when Lock-In is already running. This option is disabled if the Sweep Mode is MLS and the flag to configure the Lock-In per segment in the Multiline segment editor is set.
integration_time: (optional) NX_NUMBER {units=NX_TIME}
Time during which the spectroscopy data are acquired and averaged.
number_of_sweeps: (optional) NX_NUMBER
Number of sweeps to measure and average.
sweep_start: (optional) NX_NUMBER {units=NX_VOLTAGE}
The first bias values of the sweep.
sweep_end: (optional) NX_NUMBER {units=NX_VOLTAGE}
The last bias values of the sweep.
num_pixel: (optional) NX_NUMBER
Define the sweep number of points, that is, the maximum spectrum resolution eq ...
Define the sweep number of points, that is, the maximum spectrum resolution eq. Bias window divide by Num Pixel.
z_avg_time: (optional) NX_NUMBER {units=NX_TIME}
Duration over which the Z position is recorded and averaged before and after t ...
Duration over which the Z position is recorded and averaged before and after the sweep (the latter only if Record final Z position is selected in the Advanced section). After the initial Z averaging time, if Z-Controller to Hold is selected in the Advanced section, the Z-Controller is set to hold and the tip is placed at the previously averaged Z position (plus Z offset).
sw_filter_type: (optional) NX_CHAR
Select a filter to smooth the displayed data. When saving, if any filter ...
Select a filter to smooth the displayed data. When saving, if any filter selected, filtered data are saved to file along with the unfiltered data.
sw_ilter_order: (optional) NX_NUMBER
Filter order of a dynamic filter or width (in number of points) for the gaussi ...
Filter order of a dynamic filter or width (in number of points) for the gaussian filter.
sw_filter_cutoff_frq: (optional) NX_NUMBER
Cutoff frequency for dynamic filters.
z_offset: (optional) NX_NUMBER {units=NX_LENGTH}
Offset added to the initial averaged position Zaver before starting to sweep. ...
Offset added to the initial averaged position Zaver before starting to sweep. This parameter is disabled when Z-Controller to Hold is deselected in the Advanced section. The LED “Alt” next to the Z offset indicates if an alternate Z-controller setpoint is enabled.
settling_time: (optional) NX_NUMBER {units=NX_TIME}
end_settling_time: (optional) NX_NUMBER {units=NX_TIME}
Time to wait after the sweep has finished and the bias is ramped to the initia ...
Time to wait after the sweep has finished and the bias is ramped to the initial value.
z_control_time: (optional) NX_NUMBER {units=NX_TIME}
Time during which the Z-Controller is enabled once a sweep has finished. When ...
Time during which the Z-Controller is enabled once a sweep has finished. When averaging multiple sweeps (i.e. Sweeps>1), the Z-Controller is enabled for this duration between each sweep. After the last sweep, it will wait the specified time before continuing a running scan. This ensures each sweep reliably starts from the same position. This parameter is disabled when Z-Controller to Hold is deselected in the Advanced section.
max_sew_rate: (optional) NX_NUMBER
Maximum rate at which the bias changes (before, during and after sweeping). ...
Maximum rate at which the bias changes (before, during and after sweeping). (V/s)
backward_sweep: (optional) NX_BOOLEAN
Select whether to measure the backward (return) sweep or the forward only.
z_controller_hold: (optional) NX_BOOLEAN
Select whether to set the Z-Controller on hold (i.e. disabled) during the swee ...
Select whether to set the Z-Controller on hold (i.e. disabled) during the sweep. It is selected by default. When deselected, Z-offset and Z-control time parameters are disabled.
BIAS_SPECTROSCOPY: (optional) NXbias_spectroscopy
Bias sweeps while measuring arbitrary channels with I(V) curves.
Hypertext Anchors¶
List of hypertext anchors for all groups, fields, attributes, and links defined in this class.
