[Dsg-hallc_nps] NPS low voltage test - no Voltage readback logbook entry

[Simona Malace]

Hi Taylor

Sounds good. I will be in 108 to meet with Chris (about the LV PS) at 10:30 am on Monday.

Simona

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________________________________
From: Tyler Lemon <tlemon at jlab.org>
Sent: Friday, January 27, 2023 2:30:37 PM
To: Dsg-hallc_nps at jlab.org <dsg-hallc_nps at jlab.org>; Simona Malace <simona at jlab.org>
Subject: NPS low voltage test - no Voltage readback logbook entry

Hi Simona,

Aaron forwarded me your logbook entry on the NPS LV test (https://logbooks.jlab.org/entry/4117775) so I stopped by EEL 108 to take a quick look.

I noticed that there is not anything connected to any of the LV cards.

Typically, there needs to be a complete circuit between a channel's V+ and its return to be able to measure a readback voltage.

During development of the LV IOC, I used a test adapter DSG had with low-impedance, high-power resistors between the V+ and return for each of a group's channels and was able to see the readback voltage.

During Monday's test, we could try connecting one of the LV cables to see if that resolves the issue.

-Tyler
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