Fishman AFX DELAY Manual page 12

Medium (dotted eighth note)
Create driving, syncopated sixteenth-note delays. Move the repeats knob
near minimum for one or two repeats, tap quarter notes with the tap switch
and play steady, muted eighth-notes in tempo. The timing takes a little getting
used to, but is easily mastered with a little practice. Hint: try not to listen to the
delayed dotted eighth note repeats when you start up; they can throw off your
timing. The medium delay offers up to 1500ms (1.5 seconds) of delay time when
you use the delay time knob.
Long (quarter note)
The long delay is well suited for playing call-and-answer phrases and long
cavernous echo effects. Use fewer repeats for call-and-answer and more for
multiple-echo effects. You can get up to 2900ms (nearly 3 seconds) of delay
time with the long setting. It also creates an echo which is equal to the tempo
you tap in.
Pong
A stereo effect that "ping-pongs" your sound, bouncing back and forth through
both left and right outputs, between two amps or two channels of a stereo PA.
The pong setting offers up to 1450ms (nearly 1.5 seconds) of delay time.
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