Standard Beamviewer (EBV: ESRF Beam Viewer)¶
Configuration and composition of an EBV is described here: ESRF BeamViewer Configuration.
Usage¶
Global status¶
BLISS [16]: ebv Out [16]: EBV [myebv] (wago: wcid15ab) screen : OUT led : OFF foil : NONE diode range : 10uA diode current : 0 mA
SCREEN control¶
BLISS [12]: myebv.screen_in() BLISS [13]: myebv.screen_status Out [13]: 'IN' BLISS [14]: myebv.screen_out() BLISS [15]: myebv.screen_status Out [15]: 'OUT'
LED control¶
BLISS [22]: myebv.led_on() BLISS [23]: myebv.led_status Out [23]: 'ON' BLISS [24]: myebv.led_off() BLISS [25]: myebv.led_status Out [25]: 'OFF'
FOIL control¶
If EBV has no foil, you’ll get:
BLISS [26]: myebv.foil_status Out [26]: 'NONE'
BLISS [27]: myebv.foil_in() !!! === RuntimeError: No foil on EBV [myebv] === !!! ( for more details type cmd 'last_error' ) BLISS [28]: myebv.foil_out() !!! === RuntimeError: No foil on EBV [myebv] === !!! ( for more details type cmd 'last_error' )
If your EBV has a foil:
BLISS [12]: myebv.foil_in() BLISS [13]: myebv.foil_status Out [13]: 'IN' BLISS [14]: myebv.foil_out() BLISS [15]: myebv.foil_status Out [15]: 'OUT'
DIODE current reading¶
The current diode value is returned always in mA
BLISS [39]: myebv.current Out [39]: 1.52587890625e-06
myebv.raw_current
. The value returned is in the 0-10V range.
DIODE range control¶
Changing diode range using string format:
BLISS [41]: myebv.diode_range_available Out [41]: ['1mA', '100uA', '10uA', '1uA', '100nA', '10nA'] BLISS [42]: myebv.diode_range Out [42]: '10uA' BLISS [43]: myebv.diode_range = "100uA" BLISS [44]: myebv.diode_range Out [44]: '100uA'
You can also access the floating value of gain used to convert reading to mA:
BLISS [44]: myebv.diode_range Out [44]: '100uA' BLISS [45]: myebv.diode_gain Out [45]: 10.0 BLISS [46]: myebv.diode_range = "10nA" BLISS [47]: myebv.diode_gain Out [47]: 100000.0
Setting the floating gain is possible. Range will be chosen to include the maximum desired gain given:
BLISS [48]: myebv.diode_gain = 500 BLISS [49]: myebv.diode_range Out [49]: '1uA' BLISS [50]: myebv.diode_gain Out [50]: 1000.0
Diode as a counter¶
The diode reading can be used as a sampling counter.
BLISS [51]: ct(.1, myebv) Tue Oct 22 18:17:36 2019 diode = -2.44140625e-07 (-2.44140625e-06/s)
Default counter name is diode but can be changed in configuration.
Counter object is accessible though myebv.diode
.
So either myebv
or myebv.diode
can be added to measurement group (ebv hold only one sampling counter).