Accu-Chek Aviva Owner's Booklet page 61

4. Press and release
to select "On" or "OFF." Press
and release to set your
choice.
5. If you select "On," the hour
flashes. "A-1" and the bell
symbol remain on the display.
Chapter 4: Meter Memory, Setup, and Downloading
or 6. Press and release
to select the hour. Press and
release
or 7. The minutes flash. Press and
to set the hour.
59
release or to select
00, 15, 30, or 45. These are the
only choices.