Yamaha O2R Owner's Manual page 145

MIXING Display Functions 35
The second page, shown below, contains the Delay controls for TAPE
channels 1 to 16 and effects returns (EFF 1 and EFF 2), and appears when
one of these channels is selected.
Fine-Tuning the Delay
You can adjust the delay, either samples [Smpl] or milliseconds [mSEC]
with coarse or fine precision just by the placement of the cursor on the
selected channel.
For example, if the cursor is positioned over the thousands digit of the
samples [Smpl] field, when you rotate the encoder wheel, the values
increase or decrease by thousands of samples.
If the cursor is positioned over the hundreds or tens digit of the samples
field, when you rotate the encoder wheel, the values increase or decrease
by hundreds or tens of samples.
The same is true when the cursor is positioned over the ones digit of the
samples field, or the tens, ones, or decimal digits of the milliseconds
[mSEC] field.
02R User's Guide