CESVA DC112 - 3 Registering Data; Saving Final Results; Making a Recording

DC112d/DC112
User’s manual
23
3. REGISTERING DATA
The DC112d/DC112 can record in the internal memory the values of the functions measured.
When the equipment is switched off the recorded data is not lost and can be retrieved and
displayed directly from the DC112d/DC112 or transmitted to a PC. The memory can be
erased directly from the DC112d/DC112.
Two kinds of registers may be saved in the memory:
• The final results of a measurement.
• Continuous recordings of functions with programmable integration time.
3.1 Saving final results
Once you have completed a measurement ( ), the results may be stored in the memory by
selecting the SAVE RESULTS option from the main menu. The DC112d/DC112 will indicate
the register number in which to save the data.
The DC112d/DC112 stores the following information.
• Equivalent continuous sound pressure level with A frequency weighting corresponding to
the measurement time (t) (L
At
).
• Equivalent continuous sound pressure level with C frequency weighting corresponding to
the measurement time (t) (L
Ct
).
• Equivalent continuous sound pressure level with the integration time corresponding to the
measurement time (t), with or without A frequency weighting for each one of the octave
bands centred on frequencies 63, 125, 250, 500, 1000, 2000, 4000 and 8000 Hz. (Only
DC112).
• Overall peak sound pressure level with C frequency weighting corresponding to the
measurement time t (L
Cpeak
).
• Equivalent daily noise exposure level (L
EX,8h
).
• Equivalent continuous sound pressure level with A frequency weighting corresponding to
the last integration interval (T) (L
AT
).
• Equivalent continuous sound pressure level with C frequency weighting corresponding to
the last integration interval (T) (L
CT
).
• Equivalent continuous sound pressure level corresponding to the last integration interval
(T), with or without A frequency weighting for each one of the octave bands centred on
frequencies 63, 125, 250, 500, 1000, 2000, 4000 and 8000 Hz.(Only DC112)
• Peak sound pressure level of the integration interval (T) with C frequency weighting.
• Measurement time (t), integration time (T) and the integration time elapsed.
• Date and time of the beginning of the measurement.
DOSE, DOSE
p
, L
EX,8h p
, E and E
p
functions are not saved. Every time a register is displayed
with the MEMORYÎ SEE REGISTER option, these functions are calculated according to the
L
C
and t
p
values.
3.2 Making a recording
A recording consists of making a measurement and storing the parameters measured by the
DC112d/DC112 in the memory.
Before beginning a recording, make sure there is no measurement in progress (
).
To begin a recording, press
. The screen will display the register number. The
functions selected for the type of recording will be saved periodically in the memory until you
stop the recording by pressing
.