7-34 824 Reference Manual 9/29/09
None - The instrument stores the L
eq
but does not
store a second level.
Pk-I - The second level the instrument stores is the
greatest instantaneous level (L
pk
) detected by the pri-
mary peak detector that occurred during the time his-
tory period. The primary peak level is weighted
according to the state of the Pk Weighting setting.
Pk - II - The second level the instrument stores is the
greatest instantaneous level (L
pk
) detected by the sec-
ondary peak detector that has occurred during the
time history period. The secondary peak level is
weighted according to the state of the Weighting set-
ting.
Lmax - The second level the instrument stores is the
maximum level (L
max
) that has occurred during the
time history period.
The “Any Data” information stored
with the Time History is accessed
through the Time History menu
under the “View” key.
Advc - Stores up to 38 different parameters with each
time history period which are user selectable, such as:
Leq, Peak, Max, Min, Takt maximal, battery voltage
and temperature. See Advanced Time History screens
below.
Resolution - (LOG, SSA) In order to double the time history storage capacity, it is
possible to reduce the resolution of the Time History record
from 0.1dB to 1.0dB.
0.1dB - Leq and the optional Other Level are stored
with the highest resolution (0.1dB) which requires 2
bytes of memory per level.
1.0dB - Leq and the optional Other Level are stored
with 1.0dB resolution which requires only 1 byte per
level stored. Levels are rounded to the nearest integer
(85.5 would be stored as 86dB and 85.4 would be
stored as 85dB).
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