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HOW TO CALCULATE AVAILABLE
MEMORY
1 reading uses 20 bytes
Each note uses 0 - 30 characters = 0 - 30 bytes.
Each group of readings uses an additional 44 bytes (independent of the length of the
group name).
Memory size = 32000 bytes
Number of readings
where
a = % memory left
b = number of groups of data
= number of experimental plots, for instance
c = average length of annotation (to 30 characters)
Example (1)
Given: No notes, 1 group
Maximum number of readings
-
-
Example (2)
Given: 30 characters of notes per reading. 16 groups of readings
Maximum number of readings
In normal use the AP4 should be able to cope with 1 days' data with no problem.
��×3200
)− ( �� ×44 )
(
100
=
20 + ��
=
= 1597 readings
= = = 1 reading every 18 seconds for 8 hours
=
= 625 readings
= 1 reading every 46 seconds for 8 hours
HOW TO CALCULATE AVAILABLE MEMORY
( 32000 – 44 )
20
(32000 – (16 �� 44)
20 + 30
Page 41
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