Those asymmetric currents are same as what I saw with the table top +/-18V supply. If you really don't like it, there could be an option to disconnect CH3/4 in the box.
In any case, this could be a good long-run test of the demod box, couldn't it?
I checked the power regulators on the Rich demod box (according to the schematic, D1000217). The positive one is LM2941CT, and the negative one is LM2991T. Both accept input voltage up to +26V or -26V respectively. So my use of +\- 24V to be regulated down to +\- 15V isn't too crazy. It's a little crazy, but not too crazy. They recommend having only a 3V difference between the input and output voltages. We don't have any 18V or 20V power supplies in the regular LSC power supply rack, so Rana suggested using the 24's.
When I plug in and turn on the Rich box, the current on the +24V power supply goes up by about 0.8A, and the -24V supply goes up by about 0.3A. That seems like kind of a lot. Is that too much? Do I need to find a better plan that involves +\- 18V? Thoughts?
For now, the Rich box is off, just in case.