1
DESIGN
1.4.1
Keypad
If the device is not controlled via PC, you may also use the keypad for setup. In the middle it contains arrow
keys with an OK-button in the center. The top corners contain function keys, whose functions are indicated
by symbols on the display. The key below on the left is used to start and pause measurements, while the
one on the right switches on the device and toggles the brightness level.
1.4.2
Display
The display shows the measured values and is used for setting up the device. It is refreshed every 500 ms.
The status bar on the top of the display shows symbols for: Battery, Memory, Play/Pause, Storage, Calibra-
tion, USB connection, Level of brightness and time. Below the clock time the measuring time is displayed.
There are three basic modi to display spectra, history data or numeric values as well as a display for infor-
mation:
Figure 1.3: Third Octave Display
The
Third
Octave
Display
shows
a
spectrum in the main part with live values
as bars and L
eq
values as roof top.
Via
left/right keys the spectral cursor can be
moved to select signle bands. The band
level and the frequency are displayed
above the graph as well as the measu-
rement duration. On the left L
AF
and L
CF
are displayed as bars. The bottom shows
numerically one sound level value, which
can be switched using the up/down keys.
Figure 1.4: History Display
Instead of a spectrum the History Display
shows two level graphs in the main part.
Which levels are shown is set in the confi-
guration (section 2.2.1). The time length of
the x-axis can be toggled with the left/right
keys.
Manual Tango_Plus
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SINUS Messtechnik GmbH
