with the FG 504 set at start freq 10, stop freq 40, multiplier at 10^2, sweep off,
measured on my 2445b, Sine freq 982.3 Hz, Sawtooth 975.9 Hz and Square wave 24.5 mHz.
The square wave is an asymmetrical sine wave, not the Sawtooth I was expecting.
Since I have two of these things and this one at least does this, and also the sweeps and other functions, all except a square wave, and the other one does nothing, this might be the one to fix.
What do you think?