HT instruments HT157 - Manual (Page 16)

HT155 - HT157
EN - 14
5.1.2. STATISTIC ANALYSIS OPERATIONS
1. Select the “Statistic” icon and confirm with “ ”. The instrument shows the following
screen relevant to the numerical display of the measured quantities
 Line 1
 Lines 2,8
 Line 9
Fig. 11: Numerical screen of statistic analysis
Line 1
The left part shows the current date/time set on the instrument, while the
right part shows the measuring range currently used by the instrument.
Both the parameters can be programmed by the user as follows:
 Date/time setting
1. Use the “ ” and “
” keys to move the flashing cursor to fields YYYY
(year), MM (month), DD (day), HH (hours), MM (minutes) SS
(seconds)
2. Use the “ ” and “ ” keys to select the desired program:
 Configuration of the measuring range
1. Use the “ ” and “
” keys to move the flashing cursor to symbol “R”
2. Use the “ ” and “ ” keys to select the measuring range among the
following options: 0
90dB, 10 100dB, 20 110dB, 30 120dB, 40
130dB, 50 140dB according to the reading carried out by the
instrument. After each range modification, the reading takes
approximately 3s to become stable
Lines 2
 8
The central part of the display shows:
 The measure name in the first 14 characters of the second line,
defined in the programming section (see § 4.6.3). Press the “ ” key to
change the measure name
 The values of the measured quantities are updated in real time
every second. The following parameters, relevant to the sound
pressure level, are considered: LAFp, LAeq1s, LAeq,T, LAE, LAFeqT,
SD, LAFmax, LAF5, LAF10, LAF50, LAF90, LAF95, LAFmin