Norsonic nor118, Instruction Manual, Page: 20 / 116

8 Chapter 1
Introducing the Nor118
9 Norsonic Nor118
User Guide
consecutive periods until the marker again is deactivated.
A typical application for marker 4 is to denote intervals
of particular interest.
The keys to use.
e keys used to enter the markers are
 (marker 1),  (marker 2),  (marker 3) and
 (marker 4) since these keys are the lower most keys
of the front panel and thus easy to reach during a measure-
ment. None of these keys are used for other things during
a measurement either.
Excellent for noise monitoring
With the Nor118 you are able to do nearly all types of noise
measurements – community noise, industrial hygiene,
product control, noise mapping and more.
But, you don’t need to attend the measurement ses-
sions all the time. In fact, the Nor118 is able to do a lot
on its own.
e measurement time can be preset to e.g. 30 minutes
or an hour and the instrument put in a mode where it
measures and stores the results, then starts measuring
again, stores the results, starts measuring again and so
on. Each measurement will be stored in a separate file,
but all files are stored in the same directory, which has
the name of today’s date.
In this way the instrument will measure the periods you
need. And, do not forget that if this store and go feature
(which is standard) is combined with the optional time
profile each measurement will provide global data and a
time profile with a resolution specified by you!
Of course, the instrument will spend a little time stor-
ing the data (housekeeping). erefore, if you start the
session with hourly measurements exactly on the hour,
long “store and go” sessions will – after a while – experi-
ence a small, but significant time shift, so that each period
no longer starts exactly on the hour.
Enter synchro mode . is feature (standard in all models)
stops the measurement slightly earlier to provide time
for store and restart. By sacrificing a little at the end of a
measurement the synchronisation with the time of day is
retained, a feature important to many of our customers.
The principle of optional extensions
e capabilities and setup options of your Nor118 will
depend on which of the available extensions it has been
equipped with.
Extensions are modules – made in hardware or made
as software, in the instrument or e.g. as software for your
 – available for your Nor118. Norsonic extensions are
always optional and hence often referred to as options.
In this way you do not have to pay for features you’re not
going to use anyway.
However, you may find that your tasks are expanding
into new areas of acoustics as time goes by. erefore a
typical Norsonic extension will be available for installa-
tion as retrofit.