It has been pointed out that the perturbation spectrum predicted by inflati
on may be sensitive to a natural ultraviolet cutoff, thus potentially provi
ding an experimentally accessible window to aspects of Planck scale physics
. A priori, a natural ultraviolet cutoff could take any form, but a fairly
general classification of possible Planck scale cutoffs has been given. One
of those categorized cutoffs, also appearing in various studies of quantum
gravity and string theory, has recently been implemented into the standard
inflationary scenario. Here, we continue this approach by investigating it
s effects on the predicted perturbation spectrum. We find that the size of
the effect depends sensitively on the scale separation between cutoff and h
orizon during inflation.