23Nardalert S3 Narda
4.2 Checking monitor functions
4.2 Checking monitor functions
Performing a function test:
1. Connect the sensor to the NS3. Turn monitor on, insure it completes it's
POST (Power On, Self Test) and then set menu to Self Test.
2. Use an appropriate check source to generate an upscale indication for
that sensor’s display on the NS3.
3. An upscale indication indicates an OK Function Test.
4. If no indication is seen on monitor display, verify that the unit passes
its turn-on tests and verify the test source is operating properly.
Note: Do not use this function test for verifying calibration. This test is
only suitable for checking sensors and their connection to the NS3. The
readings displayed on the monitor depend on the type of sensor and are
irrelevant for this test, and as such cannot be used to verify calibration.
Appropriate test sources
A convenient method to test the RF/microwave sensors in the NS3 is to
use a common two-way radio. In many countries “family radios” generate
enough power to produce a full scale reading if held very close to the
sensor itself. The North American frequency of 433 MHz will produce an
upscale indication for both the low and high frequency sensors, providing
a more complete verication.
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