- ascan, a2scan, a3scan, a4scan, amultiscan Absolute motor scans on a 1D path.
The scan interval is specified by supplying a start and end position for each motor.
After a scan has ended the motor(s) remain at the final scan position.
p09/door/exp.01 [37]: ascan exp_dmy01 0 1 20 0.1
p09/door/exp.01 [38]: a2scan exp_dmy01 0 1 exp_dmy02 5 7 20 0.1
'ascan': motor exp_dmy01 is scanned from 0 to 1, the number of intervalls is 20,
the sample time is 0.1.
'a2scan': motor exp_dmy01 is scanned from 0 to 1 while exp_dmy02 is scanned from 5 to 7.
monitor (preset) mode: The monitor counts are specified as a negative sample time. A value of -1
corresponds to 1000000 monitor counts.
- dscan, d2scan, d3scan, d4scan, dmultiscan Relative motor scans on a 1D path.
The scan interval is
specified by supplying the offset for the start and end position relative to the current
motor position. After a scan has ended the motor(s) move back to the before-scan position(s).
p09/door/exp.01 [37]: dscan exp_dmy01 -1 1 20 0.1
- timescan Scan without motor, 11 points, 0.1s sample time, 0.5s latency time:
p09/door/exp.01 [37]: timescan 10 0.1 0.5
Notice that if the latency time is too short, timescans may collect 'nan' data.
The dummy scan functionality can also be performed using a dummy motor.
- fscan. N-dimensional scan along user defined paths. The motion path for each motor is defined
through the evaluation of a user-supplied function that is evaluated as a function of the independent variables.
- Independent variables are supplied through the indepvar string. The syntax for indepvar is "x=expresion1,y=expresion2,...".
- If no indep vars need to be defined, write "!" or "*" or "None"
- Motion path for motor is generated by evaluating the corresponding function 'func'.
- Count time is given by integ_time. If integ_time is a scalar, then the same integ_time is
used for all points. If it evaluates as an array (with same length as the paths), fscan will assign a
different integration time to each acquisition point.
- If integ_time is positive, it specifies seconds and if negative, specifies monitor (preset) counts (times 10**6).
IMPORTANT Notes:
- No spaces are allowed in the indepvar string.
- All funcs must evaluate to the same number of points
Example:
fscan "x=[1,3,5,7,9],y=arange(5)" 0.1 motor1 x**2 motor2 sqrt(y*x+3)
Arguments: independent variables, integration time, list of motor and path curves
- mesh A 2D grid scan.