[Dsg-hallb_magnets] Scope Captures

[Brian Eng]

That is the voltage the QD #1 Channel 1 sees during a ramp.

Not sure that we'll be able to get much from it since the time scale is so big (5s/div).

The frequency Glenn found was ~120 kHz (I don't think that was captured with a picture), which is to fast to be any equipment.

----- Original Message -----
> From: "Amrit Yegneswaran" <yeg at jlab.org>
> To: "Brian Eng" <beng at jlab.org>
> Cc: "dsg-hallb magnets" <dsg-hallb_magnets at jlab.org>
> Sent: Friday, September 15, 2017 3:48:58 PM
> Subject: Re: [Dsg-hallb_magnets] Scope Captures

> oi, brian
> why am i looking at this?
> and what does this plot mean?
> is the baseline (carrier) level going up to 1.69 V.
> i assume these are from the VTs but which one.
> looks like the grounding scheme has to be revisited, if it is baseline shifts?
> whats the freq?
> let me know.
> 
> 
> 
> 
> 
> 
> From: "Brian Eng" <beng at jlab.org>
> To: "dsg-hallb magnets" <dsg-hallb_magnets at jlab.org>
> Sent: Friday, September 15, 2017 3:08:12 PM
> Subject: [Dsg-hallb_magnets] Scope Captures
> 
> There is either a .png + .txt or .csv + .txt with the same filename (the number
> below corresponds to the number in the filename).
> The .txt file has the scope setting & statistics.
> 
> 0 = MPS on, set to 0A
> 1 = Same, but finer time scale (so more points)
> 2 = Ramping to 5A
> 3 = XY points from same ramp
> 6 = MPS set to 5A, steady state
> 7 = ZFCT output from remote MPS chassis
> 
> Let me know if there's any questions.
> 
> We're in the process of increasing the threshold for QD #1 channels 1 & 2 to 100
> mV
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