Every instrument is operated from its own front panel: turn a knob by dragging it or with the mouse wheel, and press the keys as in the lab. Click a knob once for fine adjustment.
The circuit is solved from your actual wiring with real component models: the 1N4148 diode (Is = 2.68 nA, n = 1.84) and the CR3 Zener with a 3.8 V breakdown.
Step text comes from the lab manual (Ohm's law follows the lab set-up). Grading is based on the electrical behaviour: any wiring that gives the required circuit is accepted, and your readings are compared with what your own circuit gives.
In Training, the dashed orange wire shows the connection for the current step.