Larson Davis SoundExpert LxT, Руководство пользователя

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9-6
Time History Tab LxT Manual
Graph scaling can be modified as
described in section “Graph Scale
Adjustment”. The first display, labeled Run , represents the keypress
initiating the measurement, with the corresponding data and
time. There is no measured data associated with this sample
point.
Data Display at Cursor Position
Press the
6
key once to display data measured during the
first time interval, as shown in FIGURE 9-5. Once data are
displayed, use the
6
and
4
keys to move the cursor right or
left, respectively, in increments equal to the time history
period.
.
FIGURE 9-5 Measured Data at Cursor Position
Left/Right Arrow Keys
For the display shown in FIGURE 9-5, the 4 and 6 arrow
keys have dual roles as listed below. Press
5
to toggle
between them:
• Move cursor and change displayed record
• Step through metrics
Date and time at
cursor position
Leq(x), calculated using
the selected time interval,
at cursor position
1st Time History
Parameter at cursor
position (Leq in this
instance. )
Time History Graph: Leq(x)
where x is the time history
interval)
Cursor position, in
multiples of time history
period
Total number of data
points measured