8.4.3
Delayed mode: Tim. – Data storage and audio files
At the end of each measurement, files of metrological data and audio files (if the function is activated) are stored on the SD card.
This is how it works:
Simple delayed mode (01 repetition)
: storage is made at the end of the measurement. The instrument stays active and the storage
time depends on the importance of metrological data and of the number and size of audio files.
•
Metrological data: brief time
•
Audio file: it can last from a few seconds to 40 min
At the end of the storage, the instrument turns off.
Repetitive delayed mode (from 2 to 10 repetitions)
without Audio function:
storage is made at the end of the measurement if the
daily duration does not exceed 23H59M00S. The last minute is for the storage of metrological data.
At the end of the storage, the instrument activates its sleep mode and starts again at the next period, etc....
Conclusion
: all periods will start at the same time, but the daily durations will be limited to
23H59M00S.
Repetitive delayed mode (from 2 to 10 repetitions)
with audio function
: storage is made at the end of the measurement if the daily
duration does not exceed 23H20M00S. The last 40 minutes are for the data storage.
At the end of the storage, the instrument activates its sleep mode and starts again at the next period, etc....
Conclusion:
all periods will start at the same time, but the daily durations will be limited to
23H20M00S.
Note
: if there is no audio file, then the maximum daily duration will be 23H59M00S
Additional information:
for acoustic studies on successive days, it is advised to perform a single measurement of several days or
weeks and to reorganize in daily periods with the operating software.
8.4.4
I /O mode
It is possible to launch and stop the measurement with an external
electronic command. The signal comes from every electronic system
that can provide a continuous electrical signal of 5V maximum (called
TTL) - Ex: controller for the monitoring of industrial process.
➢
Select
I/O
icon at the bottom right of the screen when set the
instrument before the measurement.
➢
Connect at the bottom of the instrument in the
I/O 1
plug a
2.5 mm of diameter Jack cable.
Principle:
A measurement launching according to the I/O mode is performed once
an electrical voltage of maximum 5 VDC appears on the
I/O1
In
. It stops
once this same electrical signal backs to 5 VDC (see page 64 for the
features).
40
Modes of measurement launching
130
110
090
080
070
050
030
010
31.5 63 250 1k 4k 8k
---------
NR
.
T
1/8s
00/00:00:00
I/O
E1
130
110
090
080
070
050
030
010
A C Z 63 250 1k 4k 16K
63.4
.
63
.
dB
1/8s
00/00:00:20
Hz
I/O
1s
89,1
LpK
C
dB
1/2 s
.
88.7
61.4
-------
-------
dB
dB
01s
I/O
LAeq
LCeq
dB
dB
00/00:00:00
LAeq,T
LCeq,T
Measurement
start
Measurement
stop
Measurement
Schema
