The measurement conditions for the settling time of a current DAC

Hi

The settling time of a current DAC is depend on output op amp feature.

For example, AD5546 datasheet say it was using AD8038.

But I can't see the measurement cuircuit or external condition.

Is it No load ?

and I would like to know  the mean of "data cycles from zero scale to full scale to zero scale"

Regards

moto