Rime Lite i.6 User Manual page 11

2. t-Mode.
Duration time setting Mode.
-Press Mode Button( A2)-The Mode LED operation indicator On
-The display will change from F-Step mark to t.1, t.2 ...
-Turn Flash's power adjust Dial right or left,
Duration time gradually changed.
t-Mode has 7- steps for Duration time variation. ( t.1, t.2, t.3, ...t.7 )
11