Norsonic NOR150, Instruction Manual

Page: 118 / 216

102 Chapter 21
Sound Intensity
NOTE! Norsonic recommends the 12 mm spacer
for most measurements. The 12 mm allows
measurements in the range 50 Hz to 6,3 kHz.
A single 7-pin Lemo-connector connects the probe
to the instrument; any standard Norsonic microphone
cable may be used as an extension. The Nor1290 kit
comes with a light-weight rod with adjustable handle,
with the option of mounting a smartphone directly on the
handle. The rod has 7-pin Lemo-connectors, functioning
as an ordinary microphone cable.
To use the probe handle, connect the probe at the top
of the rod, then add an extension cable between the
bottom end of the rod and the Nor150. The optional
smartphone will provide the same view as the Nor150
itself, offering a one-hand operation of intensity
measurements.
The probe may also be mounted directly on the Nor150,
or on a microphone cable.
Figure 21.4 - The Nor1290 probe assembled with 12 mm
spacer. Positive direction is from A to B.
Figure 21.5 - The Nor1290 with extension rod, smartphone
handle and windscreen.
Positive sound
intensity direction