Accu-Chek Aviva Nano User Manual page 31

(for example)
The control result, the
bottle symbol, and a
flashing L appear on the
display. Do not remove
the test strip yet.
7
Press to mark the
control result as a
Level 1. Press a
second time to mark the
control result as a
Level 2.
(for example)
Press and release to set the control level in the
meter.
OK and the control result alternate on the display if
the control result is in range. Err and the control
result alternate on the display if the control result is
not in range.
Remove and discard the used test strip.
After a successful test, the meter turns o
5 seconds after the test strip is removed.
Control Tests
8
4
29