Boss Phase Shifter PH-3 Owner's Manual page 9

Setting the Tempo with the PH-3's Pedal Switch
* RATE cycles for use with the tempo settings can be made in
the range of 0.2–16 seconds.
1. Step on, and continue depressing the PH-3's pedal
switch for at least two seconds.
If the pedal switch is pressed when the effect is on, the CHECK
indicator goes out, and the effect is turned off for two seconds.
If the pedal switch is pressed when the effect is off, the CHECK
indicator turns red, and the effect is turned on for two seconds.
* For switching without the normal stress and hassle of turning
effects on and off, when you go into the tempo setting mode
while the effect is on, the effect is first switched off for two
seconds, and the PH-3 switches to tempo setting mode.
2. The CHECK indicator then flashes in red and green,
and the tempo can then be set with the effect on.
* Here, the tempo is indicated by the value set with the RATE
knob.
3. Press the PH-3's pedal switch in timing with the
tempo.
The CHECK indicator then flashes in red and green in time with
the tempo.
* When the pedal switch is pressed, the filter is completely
lowered (except when set to RISE or FALL). When using this,
even if the RATE (as shown by the flashing CHECK indicator)
is off slightly from the tempo, you can match the RATE to the
tempo with one step on the PH-3's pedal.
MEMO
Setting the RATE near the desired tempo beforehand allows
you to make faster and more natural tempo settings.
4. Press and continue holding the PH-3's pedal switch
for two seconds or longer to finish setting the tempo.
The effect goes on, and instead of flashing in red and green, the
CHECK indicator will light steadily in red.
* When you have finished setting the tempo, the RATE changes
to the value for the tempo setting made with the pedal, so the
value will differ from the value indicated by the RATE knob.
* When changed with the RATE knob, the tempo is then the
same as the value for the RATE knob.
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