Fluke 281 User Manual page 82

281, 282, 284
Users Manual
The four filter choices, which are either automatically selected or set manually with the
type soft-key, are as follows:
10 MHz elliptic:
16 MHz elliptic:
10 MHz Bessel:
No filter:
9-18
The automatic choice up to 10 MHz for sine, cosine, haversine,
havercosine, sin(x)/x and triangle. Would be the better choice for arb
waveforms with an essentially sinusoidal content.
The automatic choice above 10 MHz for sine, cosine, haversine and
havercosine. Not recommended for any other waveforms.
The automatic choice for positive and negative ramps, arb and
sequence.
The automatic choice for square ware, pulse and pulse trains. May be
the best choice for arb waveforms with an essentially rectangular
content.