Roche CoaguChek XS System User Manual page 29

3. Match the Code
Numbers
Confirm that the number
displayed matches the
number on the test strip
container, then press the
M button .
If the numbers are different,
make sure you are using the
code chip that came with
the test strips you are using.
An hourglass appears as
the meter warms up, which
takes about 30 seconds
When the meter is
warmed up a flashing test
strip appears and the meter
begins a countdown. You
have 180 seconds to apply
blood to the test strip.
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