Bionix EDI-250 biological oscilloscope, this is specialized for biological experiments, has XLR connectors for probes, this seems to work fine, interestingly as you can see the actual traces being written are blue while the phosphor, which is relatively long duration, is green. I dont have the right probes for this but I was able to set each channel at.
5v per division and just tickle the connectors with my finger and both channels would show signals and both acted consistently the identically. The item "Bionix EDI-250 Biological Oscilloscope Tested Working" is in sale since Friday, September 25, 2015. This item is in the category "Business & Industrial\Healthcare, Lab & Life Science\Lab Equipment\Analytical Instruments". The seller is "tminus7" and is located in Fremont, California. This item can be shipped worldwide.