79
Store Operations
The NL-21/NL-31 incorporates a memory which can be used to store
measurement data (sound level, L
p
, L
eq
and other processed values,
measurement parameters such as frequency weighting, time weighting, etc.).
This chapter describes how to store data in memory and how to recall data
from memory. There are three different ways of storing data, as listed below.
Manual
In this mode, the operator stores the sound level and processed values in the
memory manually. Pressing the Store key causes the current sound level,
preselected processing values, and measurement parameters to be stored.
The internal memory or memory card can be selected as store target.
Up to 100 data sets can be stored in the internal memory. When storing on a
memory card, the maximum is 100 data sets per file.
Compact flash card
Auto 1
This store mode becomes available when a memory card is inserted.
It is useful for recording the sound level waveform. When a 16-MByte memory
card is used and the store cycle is set to 1s, data for up to 200 hours can be
stored continuously. The store cycle can be set to 100 ms, 200 ms, 1 s, or L
Aeq,1 sec
(L
Aeq
per second).
A timer mode which allows presetting the start and stop time is also available.
When a 16-MByte memory card is used and the sampling cycle is set to
100 ms, data for up to 1.3 days can be stored continuously. *
Auto 2
This store mode becomes available when a memory card is inserted.
Up to 99999 data sets can be stored continuously. This mode is most suitable
for long-term measurements. One data set contains all processed values, but
not the sound level.
A timer mode which allows presetting the start and stop time is also available.
An interval measurement function which performs measurement for 10 minutes
at every full hour is also available.
To Next Page
Loading...
