Strange Output for a RL circuit
1)  wrong Gen. frequency  T= 1.8cm * 50ns ~ 90 ns = 11MHz shud be much lower f or greater period Tau = L/R= 820u/2k2= 373 ns vs your 90ns
2) note rise time automatically indicates load capacitance  


from self-capacitance ( normal) and/or virtual probe. (30pF ?)

3) Both indicate you are operating too high a frequency for this L/R  ratio and neglecting capacitance which you can tell from the half-sine  PW &lt; 100 ns or self-resonance with low Q around 5 MHz or so.


I can synthesize your waveform @ 8Mhz using different values.


Always calibrate your instrument with a known square wave and resistive divider then add stray effects like capacitance and inductance.