Hi,
I recently purchased an U1620A portable oscilloscope from Keysight's eBay store; however, it does not come with a power supply. It is listed as being 15V 4A, but I can't find any info about the barrel jack. The specified one is very expensive and does not seem to be in stock anyways.
I am looking for the barrel jack outer and inner diameter, as well as the polarity (ie center negative).
Thank you