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How do you find out how many different voltages can be obtained simultaneously from a power supply?

I need to find out how many different voltages can be obtained simultaneously from the HP E3631A power supply. How is that done? Does anyone know the answer?

Public Comments

1. I'd read the front panel. If that gave no clues, I'd look for the manual, first near the unit, then in it's box, then online. Lastly, I'd guess 3. Most benchtop power supplies have 2 variable outputs 0-30VDC, and one fixed output at 5VDC.
2. According to the source link I posted below, it is a triple output power supply. = variable from 0 to +6 volts and from 0 to 5 amps, = variable from 0 to +25 volts and from 0 to 1 amp, = variable from 0 to -25 volts and from 0 to 1 amp. If you hook up the first two in series, you can extend it up to +31 volts at 1 amp. To do this, you have two options. You can connect the - terminal of the +6 volt supply to the + terminal of the +25 volt supply, then connect the +terminal of the +6 volt supply to the positive side of your circuit and connect the - terminal of your +25 volt supply to the negative side of your circuit. Or you can connect the - terminal of the +25 volt supply to the + terminal of the +6 volt supply. Then connect the + terminal of your +25 volt supply to the positive side of your circuit and connect the - terminal of your +6 volt supply to the negative side of your circuit. This increases your total output range from -25 volts up to +31 volts as long as you limit the current to 1 amp.
3. Is this a school question of some kind? I think the thing they're getting at is that this is a triple output supply. And then you can put a meter across all the different combinations of outputs. eg (from the +25 to +6V and get 19V then from the +6v to the -25V and get 31V etc. you get the idea.