The first scan

Before we can start a scan, we have to set some environment variables: ScanDir, ScanFile, ActiveMntGrp and possibly JsonRecorder. JsonRecorder has to be set to True to generate json-encoded output on doors, used by pyspMonitor and SardanaMonitor. Here are some examples:

p09/door/exp.01 [11]: senv ScanFile tst.fio
ScanFile = tst.fio

p09/door/exp.01 [12]: senv ScanDir /home/p09user/temp
ScanDir = /home/p09user/temp

p09/door/exp.01 [13]: senv JsonRecorder True
JsonRecorder = True

p09/door/exp.01 [14]: senv ActiveMntGrp mg1
ActiveMntGrp = mg1

The command lsenv displays all environment variables:

p09/door/exp.01 [15]: lsenv
           Name                 Value   Type
 -------------- --------------------- ------
         ScanID                    26    int
   ActiveMntGrp                   mg1    str
   _ViewOptions   {'ShowDial': False}   dict
   JsonRecorder                  True   bool
       ScanFile           ['tst.fio']   list
        ScanDir    /home/p09user/temp    str

The command lsmeas displays the contents of the MeasurementGroup:

p02/door/exp.01 [24]: lsmeas
  Active    Name      Timer Experim. channels                                          
 -------- ------ ---------- -----------------------------------------------------------
    *        mg1   eh2a_t01 eh2a_t01, sis3302_01, eh2a_vfc01, eh2a_vfc02, eh2a_vfc03,  
                            exp_petra

We open an additional xterm to launch a tool that displays graphics, Figure 7.5 shows the widget:

$ SardanaMonitor.py

This is the scan command:

p02/door/exp.01 [25]: ascan ch2_dmy01 0 1 10 0.1
Operation will be saved in None (fio)
Scan #38 started at Wed Nov 14 16:01:33 2012. It will take at least 0:00:01.100000
Moving to start positions...
 #Pt No      dt     ch2_dmy01  eh2a_t01  sis3302_01  eh2a_vfc01  eh2a_vfc02  eh2a_vfc03  exp_petra
   0      0.063441      0        0.1      (2048,)     0.292209    0.283309    0.394454     98937  
   1      0.356575     0.1       0.1      (2048,)     0.292259    0.283359    0.39486      98937  
   2      0.549326     0.2       0.1      (2048,)     0.292309    0.283409    0.39531      98937  
   3      0.740467     0.3       0.1      (2048,)     0.292359    0.283459    0.39576      98937  
   4      0.940038     0.4       0.1      (2048,)     0.292409    0.283509    0.396204     98930  
   5      1.13406      0.5       0.1      (2048,)     0.292453    0.283553    0.396554     98930  
   6      1.32566      0.6       0.1      (2048,)     0.292565    0.283609    0.397003     98930  
   7      1.51697      0.7       0.1      (2048,)     0.292657    0.283657    0.397407     98930  
   8      1.70895      0.8       0.1      (2048,)     0.292703    0.283703    0.397804     98930  
   9      1.89342      0.9       0.1      (2048,)     0.292761    0.283761    0.398257     98929  
   10     2.10928       1        0.1      (2048,)     0.292807    0.283807    0.398707     98929  
Operation saved in /home/p02user/temp/tst_00038.fio (fio)
Scan #38 ended at Wed Nov 14 16:01:36 2012, taking 0:00:02.280033. Dead time 51.8% (motion dead time 10.0%)