Chapter 1 – Introduction
Memory
4
Brüel & KjærIntegrating Sound Level Meter Type 2239 A
User Manual
You can change the measurement range by pressing . You
can change the other settings through windows that are dis-
played when you press . Settings cannot be changed while
the instrument is measuring. For more information about set-
ting up the sound level meter for measurement, see section 3.4.
1.5 Memory
The sound level meter has three kinds of memory
● Set-up
● Buffer
● Records
1.5.1 Set-up Memory
The set-up memory is used to store the date and time, last
settings used, and the language selection. This memory is
maintained by the backup battery, so it is saved when you
turn off the instrument. The date and time are stored directly
in the real-time clock, which is also powered by the backup
battery.
1.5.2 Buffer
The buffer holds all the measurement results from the last
measurement period. It is cleared each time you start a meas-
urement or turn off the sound level meter. Results in the buffer
can be output to a printer or copied into a record.
1.5.3 Records
Up to 40 records of measurement results can be stored in
memory. Records are copied from the buffer. They can be
stored automatically (after a measurement over a preset time
interval) or manually (at any time after a measurement is
stopped).
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