Instruction manual

81
Store Operation
Timer Auto (only when the NX-42EX is installed)
Executes Auto store using the set start time and recurrence interval of trig-
ger event.
Important
Never turn off power to the unit or remove the
SD memory card while a store operation is in
progress. Otherwise internal data can be de-
stroyed.
When an SD memory card is inserted in the
memory card slot of the unit, use of the internal
memory for store is not possible.
Note
A processing start time is used for a time stamp of
measurement and processed data. For example, when
performing one-minute processing with L
eq
store,
the time stamp 00:01:02 indicates that the data is
obtained for one minute from 00:01:02.
It is recommended to copy data stored in the internal
memory to SD memory card, to prevent data loss in
case of backup battery failure or other problems.
Notes for using the data management software AS-60
• Since AS-60 cannot read Manual store data, perform measurement
with Auto or Timer Auto store to handle measurement data using
AS-60.
• When L
p
store is executed with a sampling interval of 200 ms or 1 s
on NL-42/52, AS-60 calculates the time takt-max L
p
of measurement
data as L
max
, and takt-min L
p
as L
min
. To obtain the accurate values
of L
max
and L
min
, execute L
p
store with a sampling interval of 100 ms.
In this case, L
max
and L
min
are measured with L
p
at every sampling
interval.