13Nardalert S3 Narda
2.5 Dangers from AC mains charger
Sensor is not installed or operating properly
The NS3 is designed to monitor the presence of the sensor and that the
sensor is functional.
Ensure that the sensor is attached properly to the basic unit. Sensor
is designed to be even with the surface of the basic unit and to pass a
functional test at turn-on. If in doubt, cycle unit o and then on again
to perform connection test. If the sensor is defective, not installed or
failing pre-test, it will cause the system to not proceed to measure-
ment mode.
Condence testing of RF/microwave sensors can be accomplished with
a simple 2-way radio that generates more than 1 Watt. An upscale indi-
cation should be noticed on the display when the radio is transmitting
close to the sensor housing. Narda oers portable sources to accom-
plish this important test (see Optional Accessories on page 44).
Before beginning any RF radiation measurement, always inform your-
self of the frequencies and eld strengths that you could be expected
to encounter.
2.5 Dangers from AC mains charger
You could experience electric shock from the external power supply.
Do not open the charger as there are no user serviceable parts inside.
Do not expose or submerse the charger in water at any time. It is de-
signed to be used in an indoor, protected environment.
Only use appropriate USB adapter cords. Never use a damaged USB
cord.
Only supply AC voltage that meets the voltage specied at the AC
input on the Charger. The AC mains charger could be destroyed if
the voltage specication of the charger does not match the AC line
voltage.
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