Toa D-2000 Series - Manual (Page 72)

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(4) Delay distance indication button [Distance (meters/inches/feet)]
Displays the delay distance in each channel by means of numerical
values. If you click this button, a dialog for delay distance setting is
displayed, enabling you to set the delay distance by directly entering
a numerical value.
(5) Up/Down button
Changes the delay time in minimum variation units.
(6) Delay ON/OFF button [On/Off]
Displays the ON/OFF setting status of the delay function.
Click this button to turn on or off the delay function.