SC310
User’s Manual
85
7.5.5 Overload indicator)
The
SC310
has an overload indicator. If during the measurement an overload has occurred,
it will appear the sign
^
before the value of the function affected.
While there is an overload, the sign
will appear in the bottom right-hand corner of the
screen.
If during the measurement the sign appears, the SC310 will have not validate the measured
values and it can not pass to the next measurement step.
If the overload occurs during the decay curve measurement, the measurement will be
aborted automatically.
7.5.6 Indicator (---)
If the --- indicator appears after finishing a measurement, can be because:
•
The sound pressure level reached over the background noise is not enough to calculate
the parameter (T
20
Î
∆
>35 dB and T
30
Î
∆
>45).
•
The reverberation time cannot be calculated.
7.6 Data register
The values of the measured functions may be stored in the
SC310
internal memory. When
the unit is switched off, the data is saved and may be retrieved and displayed directly from
the
SC310
or transferred to a PC. The memory may be erased directly from the
SC310
.
7.6.1 Saving results
Once a measurement has been completed ( ), the results may be stored in the memory. Do
this by selecting the SAVE RESULTS option from the main menu The
SC310
indicates the
register number under which the data has been saved.
The
SC310
saves in memory, in the REVERBERATION TIME 1/1 mode for all the octave
bands centred at 63, 125, 250, 500, 1000, 2000 and 4000 Hz frequencies and in the
REVERBERATION TIME 1/3 mode for all the third octave bands centred at 50, 63, 80, 100,
125, 160, 200, 250, 315, 400, 500, 630, 800, 1000,1250, 1600, 2000, 2500, 3150, 4000 and
5000 Hz frequencies the following information:
o
Reverberation Time T
20
and T
30
.
o
Sound pressure level of background noise.
o
Initial maximum sound pressure level.
o
Decay curve: Time history of the sound pressure level decay.
