The Yamaha R1000 is a digital reverb unit that is enclosed in a single rack space rack mountable unit. It has 1/4 inch inputs and outputs in the back as well as a 1/4 inch output in the front of it for a foot switch.
The configuration of the Yamaha R1000 is pretty easy to figure out overall, as there are no tricks involved at all. From left to right, the unit has four buttons to choose the reverb mode, a meter to show the output level, and then has parameters in the form of knobs for input level, three equalization knobs for low, mid, and high, a knob for setting the reverb level in the mix and then an overall output level knob. It also has buttons to put the EQ in or out as well as a button for power. I don't have the manual for the Yamaha R1000, so I can't speak to how complete it is.