CESVA SC310, Руководство пользователя

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8.7.3 Time synchronisation
The SC310 allows you to begin recording on the hour (hh:00:00). To access this option,
select SETTING
Î RECORDING Î TIME SYNCHRONISATION from the SC310 menu.
Once the setting has been made, all recordings will begin on the hour. In other words, once
recording has been set in motion, the SC310 screen will display the message TIME
SYNCHRONISATION and will wait until the built-in clock reaches the set time to begin
displaying and saving data.
8.7.4 Kinds of recording
8.7.4.1 Recording in extended spectrum analyser 1/3 mode
Through the SETTING Î RECORDING Î SPECTRUM ANALYSER RECORDING option on
the SC310 menu you may select the way to store the measured data in the memory:
•
T functions : once each integration period T has come to an end, the following values are
stored in the memory:
o
L
T
for each of the one-third octave bands centred on frequencies 10, 12.5, 16,
20, 25, 31.5, 40, 50, 63, 80, 100, 125, 160, 200, 250, 315, 400, 500, 630, 800,
1000, 1250, 1600, 2000, 2500, 3150, 4000, 5000, 6300, 8000, 10000, 12500,
16000 and 20000 Hz
o
Overall L
T
with frequency weighting A, C and Z
o
Overall L
AIT
, L
AFmax
, L
AImax
and L
ASmax
This type of recording is conceived for long-duration measurements, such as studies of
environmental noise and traffic noise, which require detailed spectral information of the
measured noise together with overall functions.
• 125 ms functions : save every 125 ms the following 'short' functions:
o
L
T
with 125 ms consecutive integration time for each of the one-third octave
bands centred on frequencies 10, 12.5, 16, 20, 25, 31.5, 40, 50, 63, 80, 100,
125, 160, 200, 250, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000, 2500,
3150, 4000, 5000, 6300, 8000, 10000, 12500, 16000 and 20000 Hz
o
Overall L
T
with 125 ms consecutive integration time with frequency weighting
A, C and Z
o
L
AIT
, L
AFmax
, L
AImax
, L
ASmax
with 125 ms consecutive integration time
•
T + 125ms functions
: save every 125 ms the '125 ms functions' and every T the 'T
functions'.