Multinorm/FonS/Poly
21
4 Memory management
4.1 Overview
The instrument has enough memory to store approximately 4000 measurement
records. Each such measurement record contains:
•
All values (
Min, Avg, Max, Cur
) of every probe that was connected at the
time of saving the measurement, or at the end of logging interval.
•
Some additional information such as the location and time stamp of the
measurement is also stored.
•
All values from the sound level measurement (including frequency analysis
data).
Memory is organised in two levels, each level having 100 different locations. First
level represents buildings, and second level represents rooms. Each combination of
both levels represents a memory location under which any number of measurements
can be stored.
The instrument has a single memory buffer for 4000 measurement records,
intended for all measurement modes (normal or logger). When the end of the buffer is
reached the instrument searches from the beginning of the buffer if any measurements
were deleted, and so there is still some free memory space. But the logger requires
coherent free memory space. When it comes to the end of the buffer logging is not
possible anymore and memory data should be downloaded to PC and cleared in order
to enable logging again.
4.2 Saving measurement records
When memory is completely empty (after clearing both memory and logger) every
location is empty and is designated only by number (01-100). After the first
measurement is stored in the desired location, it is renamed from a number to a default
name (Building 01-100 and Location 01-100) or to an optional name that can be written
in special menu (
Rename menu
described in chapter 4.2.2).
Once the location is renamed (to a default or optional name) it keeps its name until
all measurements on this location are deleted. If all measurements on certain location
are deleted, the location name is also deleted and changed back to a number (01-100).
When the next measurement is saved on this location it is again renamed to a default or
optional name.
