27Nardalert S3 Narda
5 Operation overview
5.1 Normal operation
5.2 Special environmental operations
5.3 Using the Nardalert S3 as an area monitor
5.1 Normal operation
The NS3 should be fully charged and congured for your personal use. The
factory provides both a lanyard attachment and a belt clip for your conve-
nience, and a silicon skin to help provide protection for the unit against
shock.
Once you have veried the proper mounting conguration and have
charged the unit you should verify that the alarm levels shown on the
second start-up screen meet with your company’s policy. The NS3 was
designed to be mounted with the back side towards your body. Some
customers prefer to wear the unit mounted to a waist belt while others
prefer a lanyard attachment. Either method of attachment is acceptable
as long as the unit is normally kept close to the body to improve the radial
eld sensor’s performance.
The default setting for the LCD backlight is to extinguish after 10 seconds,
in order to save battery life. You can momentarily depress any button
to activate the LCD backlight, but the display should be visible in direct
sunlight without the backlight. An LED will briey ash every 10 seconds
to indicate the unit is operating properly.
The NS3 samples the sensor’s output approximately every 32 msec.,
and uses the average of 8 samples to log at its fastest rate. The display is
updated every second, so the level displayed is an average of the four logs.
The monitor can be set to log at a rate as fast as 4 times per second for
high speed situations.
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