Experimental Physics and
Industrial Control System

"Kasemir, Kay via Tech-talk" <tech-talk at aps.anl.gov> · Wed, 12 Aug 2020 14:37:02 +0000

Hi:

When combining a scalar 'X' and 'Y' reading into a time series, there are several options:

a) Have 'Y' update trigger a data point, using the then-current value of X
b) Have 'X' update ... of Y
c) Have a third 'Trigger' PV
d) Pick values where the time stamp matches with 0.01 seconds
e) Do something entirely different

The x-y-graph widget in Phoebus doesn't try to implement any of the above.
It simply displays two waveforms into which you collected the data as you see fit.
For example, you could use an IOC database with 'compress' records in 'circular buffer' mode to collect the data into waveforms.

Thanks,
Kay

From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of Florian Feldbauer via Tech-talk <tech-talk at aps.anl.gov>
Sent: Wednesday, August 12, 2020 10:25 AM
To: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
Subject: [EXTERNAL] Phoebus X-Y Graph 

Hey all,

we need to test some pixel sensors, and one check is measuring the 
current for different bias voltage settings.
Can I use the x-y-graph widget in Phoebus to display the current vs voltage?
Is it just showing only the actual value or does it also have a sort of 
history like the databrowser?

Best regards,
Florian

-- 
Ruhr-Universität Bochum
AG der Experimentalphysik I
Dr. Florian Feldbauer
NB 2/131 / Fach 125
Universitätsstr. 150
D-44801 Bochum

Office: NB 2/134
Phone:  (+49)234 / 32-23563
Fax:    (+49)234 / 32-14170
https://paluma.ruhr-uni-bochum.de

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System