[Elecraft] K3 tune mode question

[K3JPS]

Dear group,

I've recently acquired an SB-220. I'm new to linear amplifier operation so
please bear with me.  I'd like to know if there is some way to get the tune
function in the K3 to act like a pulser or a keyer sending dits at 40-50wpm?

I'm learning how to tune this amp, and I've been using FSK-D to send a tone
using the hand mic.

Or if there is another way I can get the K3 to tune using full peak output
power but keeping average power down, I'd like to know.

73 de James K3JPS