Is it safe to sink current into the Arc when it is set up as a voltage source? I see there is a generous current sink spec in the datasheet, but there is also a special battery profiling mode in the scripting environment. Do I need to enter a special mode, or take special precautions, before sinking current into the Arc?
I also noticed that with Autoranging turned on, large negative currents would clip rather than triggering a switch to the high range. Is this an intentional limitation?
And one last question - if I accidentally overvoltage the external power supply (12 V instead of 9V for instance), what kind of fireworks can I expect? Should I be fitting an external clamping diode when using a lab supply to power it, or is there internal protection against this sort of carelessness?