Norsonic NOR150, Instruction Manual

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101 Norsonic Nor150
Instruction Manual
Setting up the instrument for
intensity
The Nor150 may utilize a wide range of probes, both pre-
polarized and 200 V polarized microphones in different
configurations. However, the highest performance and
ease of use is achieved using the Nor1290 probe kit.
With the Nor1290, unique performance is achieved
using a two-stage correction technique.
Assembling and handling the probe
The Nor150 delivered with the Nor1290 kit comes
with a probe comprised of two phase-matched
microphones, two accompanying CCP amplifiers and
the probe hardware itself. In addition, the kit contains
spacers, calibration charts, the Nor1294 phase
correction coupler and an extension cable.
Note the serial number of each microphone cartridge,
then mount each of the microphone cartridges on an
angle adapter as illustrated in Figure 21.1. Please avoid
touching the connectors. Mount the lowest serial number
microphone/adapter on the lowest serial number
preamplifier as shown in Figure 21.2 and vice versa.
Make sure that the lowest serial number combination of
microphone/preamp is inserted into the probe hardware
port A.
Mount the spacer of choice on microphone A, and
spacer sleeve on microphone B as illustrated in Figure
21.3. Make sure the spacer adjustment knob is loose,
then push the microphones towards each other carefully
such that the spacer enters the spacer sleeve. Ensure
the microphones are positioned symmetrically around
the probe centre, and tighten the spacer adjustment
knob. Figure 21.4 shows the assembled probe along
with the positive sound intensity direction.
Figure 21.1 - Mount the microphone on the angle adapter.
Figure 21.2 - Mount the microphone and adapter on to the
preamplifier.
Figure 21.3 - The individual parts of the Nor1290.
Spacer
Channel identifier
Spacer
adjustment knob
Spacer sleeve