Norsonic nor118, Instruction Manual

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48 Chapter 9
Multispectrum measurements
49 Norsonic Nor118
User Guide
To see the level vs. time (the profile) graph of another
frequency band:
1
Make sure the display shows a time profile (level vs.
time). Use the f ↔ t key, if needed.
2
Use the ↑ and the ↓ keys (repeatedly, if needed) to
move to another frequency band.
To see the global values:
1
Make sure the instrument is in global mode (a Σ dis-
played in the upper left corner of the display). If not,
press the Σ↔∆ key to enter global mode.
2
Use the f ↔ t key to go between the sound level meter
display and the spectrum display. Move the spectrum
cursor as explained above.
e spectrum you see now is the global spectrum. is
spectrum should not be confused with the multispectrum
feature.
The result tables
e measured values can be presented tabulated as usual.
In multispectrum mode there are two tables available in
profile mode:
• Each function shown for all frequency bands (use the
 key to go to another function)
• e functions measured shown for a single frequency
band or spectral weighting network.
ese are shown in the Fig. to the right as well as over-
leaf together with the displays and tables available for the
global part of the measurement.
To produce the result tables in multispectrum mode:
1
Press  once to produce Table 1 and again to produce
Table 2.
2
Press again to return to graphical display.
e key pressing sequence is also illustrated in the Fig.
overleaf, while operating details are provided below.
Use keys to
move up and down in ta-
ble,
keys to move
to another moment in time
and
FUNC
to scroll through
the functions measured.
Table 1
Table 2
Use keys to
move up and down in
frequency (incl. spectral
weighting networks) and
keys to move
to another moment in
time and
FUNC
to scroll
through the functions
measured.