B&K 2250 Light Manual de usuario Pagina 150

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Hand-held Analyzer 2250 Light User Manual142
The percentile levels N1 to N7 can be changed after the measurement has been done.
A.4 Measurement Control
Percentile N5 0.1 to 99.9 User-defined percentile level where the value of
L
XN5
is exceeded for N5% of the elapsed time
Percentile N6 0.1 to 99.9 User-defined percentile level where the value of
L
XN6
is exceeded for N6% of the elapsed time
Percentile N7 0.1 to 99.9 User-defined percentile level where the value of
L
XN7
is exceeded for N7% of the elapsed time
Table A.5 Measurement control parameters
Parameter Values Comment
Measurement Mode
*
Manual
Automatic
Determines whether the measurement is under
Manual control (fully controlled by the Reset and
Start/Pause pushbuttons), or Automatic control
(start of measurement controlled by the Reset and
Start/Pause pushbuttons, end of measurement
automatically controlled by the instrument when
preset time has elapsed)
Preset Time
*
00:00:01 to
24:00:00
Fixes the duration of a measurement from start to
automatic stop (in hours, minutes and seconds). Any
pauses made during the measurement via the
Start/Pause pushbutton are not counted in the
preset time
Preset Logging Time
0.00:00:01 to
31.00:00:00
Fixes the duration of a measurement from start to
automatic stop (in days, hours, minutes and
seconds)
Logging Period
00:00:01 to
24:00:00
Sets the period of the logging (in hours, minutes and
seconds)
Synchronize with Clock
Yes
No
Select Yes to synchronize the logging intervals with
whole minutes or hours, for example, if Logging
Period is set to 00:01:00 (1 minute) and you start the
measurement at 8:12:33, then the first logging
interval will be from 8:12:33 to 8:12:59 (27 seconds),
the second will be from 8:13:00 to 8:13:59 (60
seconds), etc. Select No if you want every logging
interval to be exactly the specified Logging Period
Table A.4 (Cont.) Statistics parameters
Parameter Values Comment
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