NARDA S3 Operating Manual

nardalert S3

Narda Broadband Monitor

Operating Manual

®

WARNING

This Monitor should only be used after you have read this
manual, understood how it operates and consulted with your
company’s safety ocer. High level electromagnetic elds may
be hazardous to your health. This monitor cannot protect you
from all electromagnetic hazards that you could encounter.

®

USA

435 Moreland Road
Hauppauge, NY 11788, USA
Phone: [phone]
Fax: [phone]
E-Mail: [e-mail]
www.narda-sts.us

43067900 Rev. A

Germany

Sandwiesenstrasse 7
72793 Pfullingen, Germany
Phone: [phone]
Fax: [phone]
E-Mail: [e-mail]
www.narda-sts.de

Italy

Via Leonardo da Vinci, 21/23
20090 Segrate (MI) ITALY
Phone: [phone]
Fax: [phone]
E-Mail: [e-mail]
www.narda-sts.it

Narda ii Nardalert S3

Contents

Contents

1 Useful information ........................................................................................................................................... 7

1.1 Measuring electromagnetic elds .................................................................................................... 7

1.2 About this monitor ................................................................................................................................. 7

Applications .................................................................................................................................. 8

1.3 About this Operating Manual ............................................................................................................. 9

Structure of this Operating Manual ...................................................................................... 9

Characters and symbols used ................................................................................................. 9

Symbols and terms used in warnings .................................................................................. 9

Structure of warnings .............................................................................................................. 10

Symbols and marks used in this document ....................................................................10

2 Safety instructions ......................................................................................................................................... 11

2.1 Using this Operating Manual ............................................................................................................ 11

2.2 Proper use ................................................................................................................................................11

2.3 Improper use ...........................................................................................................................................12

2.4 Dangers from electromagnetic elds ............................................................................................12

Strong elds ................................................................................................................................12

Measurement errors ................................................................................................................. 12

Sensor is not installed or operating properly ..................................................................13

2.5 Dangers from AC mains charger ..................................................................................................... 13

3 Preparing the Nardalert S3 for use ....................................................................................................... 15

3.1 Unpacking ................................................................................................................................................15

Packaging ..................................................................................................................................... 15

Items included ............................................................................................................................16

Transport damage ..................................................................................................................... 17

After transport and storage ............................................................................................................ 17

3.2 Instrument overview ............................................................................................................................ 17

Top Panel ...................................................................................................................................... 17

Front Panel ................................................................................................................................... 18

Rear Panel .....................................................................................................................................18

Side Panels ................................................................................................................................... 19

3.3 Connecting the sensor ........................................................................................................................ 19

Wrong handling of the sensor .............................................................................................. 20

iiiNardalert S3 Narda

Contents

4 Getting started ................................................................................................................................................ 21

4.1 Initial display screens ........................................................................................................................... 21

Normal operation ...................................................................................................................... 22

Alarm indication ........................................................................................................................22

4.2 Checking monitor functions .............................................................................................................23

Performing a function test .................................................................................................... 23

Appropriate test sources ........................................................................................................23

4.3 Screen navigation .................................................................................................................................24

4.4 Additional capabilities of optioned units ..................................................................................... 25

Menu selection screens ...........................................................................................................25

Navigating sub-menu screen example .............................................................................26

5 Operation overview ......................................................................................................................................27

5.1 Normal operation .................................................................................................................................. 27

5.2 Special environmental operations .................................................................................................. 28

Heavy rain or snow ...................................................................................................................28

High ELF environments ........................................................................................................... 28

High RF/microwave environments ..................................................................................... 28

5.3 Using the Nardalert S3 as an area monitor ..................................................................................29

6 Instrument maintenance ............................................................................................................................ 31

6.1 Cleaning the monitor ........................................................................................................................... 31

6.2 Verication overview ...........................................................................................................................32

Simplied block diagram........................................................................................................32

Theory of operation ..................................................................................................................32

Testing RF/microwave sensors ............................................................................................. 33

Required equipment for testing RF/microwave sensors.............................................33

Operational tests .......................................................................................................................34

TEM cell (f < 300 MHz) .............................................................................................................34

Anechoic chamber (f > 300 MHz) ........................................................................................ 35

6.3 Authorized service centers ................................................................................................................35

6.4 Disposal .....................................................................................................................................................36

7 Specications ................................................................................................................................................... 37

7.1 Monitor specications ......................................................................................................................... 38

7.2 Sensor specications ............................................................................................................................39

Narda iv Nardalert S3

Contents

7.3 Outline drawing ..................................................................................................................................... 39

7.4 Declaration of conformity .................................................................................................................. 40

7.5 Declaration of origin ............................................................................................................................41

8 Ordering information ................................................................................................................................... 43

8.1 Nardalert S3 part numbers ................................................................................................................ 43

8.2 Sensor part numbers............................................................................................................................44

8.3 Nardalert S3 system part numbers ................................................................................................. 44

8.4 Optional accessories ............................................................................................................................44

Warranty information ..................................................................................................................................45

vNardalert S3 Narda

Narda 6 Nardalert S3

1 Useful information

This chapter contains basic information about measuring electromagnetic
elds, about using the Nardalert S3, and about the structure of this
Operating Manual.

1.1 Measuring electromagnetic elds

1.2 About this monitor

1.3 About this Operating Manual

1.1 Measuring electromagnetic elds

In today’s world, many industries utilize equipment that generates elec­tromagnetic elds. Our modern need for communications as well as the
eciency of electromagnetic heating systems and the safety that radar
systems provide us are just a sample of the applications that are benetted
by exploitation of the electromagnetic spectrum. We also have various
engineering considerations as well as regulatory requirements to use the
electromagnetic spectrum wisely. Various authorities have long dened
limit values designed to protect users from the dangers of exposure to
such emissions, and the Nardalert S3 is an eective tool to help companies
and individuals demonstrate compliance.

1.2 About this monitor

The Nardalert S3 (“NS3”) provides virtually everyone concerned with this
subject with an instrument for monitoring non-ionizing radiation that
a body might be exposed to within the frequency range from 50 Hz to
100 GHz (depending on the sensor used). The NS3 has a wide range of
functions, yet it is very easy to use. It also features a handy design, robust

7Nardalert S3 Narda

1 Useful information

casing, long battery life, and high measurement accuracy. The NS3 features
multiple types of sensors to accurately monitor human exposures while
worn on the body. It can be used o the body to detect elds also. Sensors
for various monitoring applications are connected to the NS3 basic unit.
Flat frequency response sensors are (or are planned to be) available, as
well as shaped sensors that evaluate the eld according to a specic
human safety standard. These sensors are calibrated separately from
the basic unit, and include a non-volatile memory containing the sensor
parameters and calibration data. They can therefore be used with any NS3
without any loss in calibration accuracy. The PC software supplied with
the monitor allows you to congure and remote control the NS3, as well
as to export saved measurement data and to analyze the results (if unit is
congured for that option).

Applications

The NS3 performs measurements for human safety purposes, particularly
in workplace environments where high electric or magnetic eld strengths
are likely. It can also be congured to function as a stand-alone area
monitor with or without the Narda NBM-580 multiple-channel metering
station.

Examples:

• Monitoring human exposure eld strengths as part of general safety
regulations

• Monitoring the eld strengths around transmitting and radar equip-
ment to establish safety zones and for monitoring personnel during
operations

• Monitoring the eld strength emanating from mobile phone base sta-
tions and satellite communications systems to ensure compliance with
human safety limit values

• Monitoring operator exposures in the industrial workplace environ-
ment, such as around plastic welding equipment, RF heating, temper­ing, or drying equipment

• Monitoring to ensure the safety of persons using diathermy equip-
ment and other medical equipment that generates high frequency
radiation

• Field strength monitoring in TEM cells, absorber chambers or test
ranges

Narda 8 Nardalert S3

1.3 About this Operating Manual

Structure of this Operating Manual

This Operating Manual is divided into two main parts:

1. Using the Nardalert S3
You will nd all you need to know about using the NS3 and how to
deal with most measurement alarms in Chapters 5 through 7.

2. Using the NS3 Software
The software can allow you to remotely read eld levels as well as en­abling the optional performance features.

Characters and symbols used

Various elements are used in this Operating Manual to indicate special
meanings or particularly important passages in the text.

1.3 About this Operating Manual

Symbols and terms used in warnings

According to the American National Standard ANSI Z535.6-2006, the
following warnings, symbols, and terms are used in this document:

The general danger symbol warns of risk of serious injury
when used with the signal words CAUTION, WARNING,

NOTICE

CAUTION

WARNING

DANGER

and DANGER. Follow all the instructions in order to avoid
injuries or death.

Indicates a danger that results in damage to or destruction
of the instrument.

Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.

Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.

Indicates a hazardous situation which, if not avoided, will
result in death or serious injury.

9Nardalert S3 Narda

1 Useful information

Structure of warnings

All warnings are structured as follows:

SIGNAL WORD

Type and source of danger

Consequences of failure to observe warning

 Instructions for preventing danger

Symbols and marks used in this document

Important instruction

!

✓



1.

2.

3.



Bold Type

CAPITALS

Blue Type

Indicates an instruction that must be followed to avoid
danger.

Requirement

Indicates a requirement that must be met before the next
instruction can be carried out, e.g.
✓ The instrument is switched o.

Instruction

Indicates a single instruction, e.g.
Switch the instrument on.

Sequence of instructions

Indicates a sequence of instructions that must be carried
out in the order given.

Result

Indicates the result of carrying out an instruction, e.g.
The instrument starts a self test.

Control element

Indicates a control element on the instrument, e.g.
Press the Enter key.

Menu name

Indicates a menu name, e.g.
 Open the MAIN menu.
Cross reference (in PDF document only)
Indicates a cross reference to another part of the

document.
Click on the blue type in the PDF document to jump

directly to the cross reference.

Narda 10 Nardalert S3

2 Safety instructions

This chapter contains important instructions on how to use the Nardalert
S3 safely. Therefore, please read this chapter carefully and follow the
instructions closely.

2.1 Using this Operating Manual

2.2 Proper use

2.3 Improper use

2.4 Dangers from electromagnetic elds

2.5 Dangers from AC mains charger

2.1 Using this Operating Manual

! Carefully read this entire Operating Manual before you start using the

instrument.

2.2 Proper use

! Keep this Operating Manual so that it is available to everyone who

uses the instrument, and ensure that this Operating Manual is with the
instrument if you pass it on to a third party.

! The NS3 is a warning device that gives active notice of the existence of

dangerous elds by means of a visible and audible warning signal.

! Only use the instrument for the purpose and under the conditions for

which it has been designed.

11Nardalert S3 Narda

2 Safety instructions

2.3 Improper use

! In particular, observe the technical data given in the Specications on

pages 38-39. Proper use also includes:

! Observing any national accident prevention regulations at

the place of use.

! Ensuring that the instrument is used only by appropriately

qualied and trained persons.

The NS3 is designed to monitor and evaluate electromagnetic elds.

! Ensure unit is powered on and working properly.

! Remember that eld levels will rapidly increase as you approach the

source of the emission.

! If you remove the unit from your body it is important that the back of

the unit faces your hand (body) especially at microwave frequencies.
When you remove unit from body, carefully observe the actual eld
level displayed when you are approaching an unknown eld source.

2.4 Dangers from electromagnetic elds

Strong elds

Very high eld strengths can occur in the vicinity of some radiation
sources.

 This monitor is designed to be directional at microwave frequencies

– it cannot warn you about a microwave exposure behind you if the
monitor is worn on the front of the body.

 Do not cross or ignore safety barriers or markings.

 Persons with implanted electronic medical devices

(e.g. heart pacemakers) must avoid restricted areas.

Measurement errors

Metallic labels (stickers) axed to the black sensor area of the sensor can
lead to measurement errors, usually an underestimation of the electro­magnetic eld strength.

 Ax labels of any type only to the yellow housing. Metallic labels must

be axed to the rear of the monitor.

 If the instrument malfunctions, take it out of service and contact your

Narda Service Center. The addresses are listed at the end of this Oper­ating Manual and on the Internet at www.narda-sts.com.

Narda 12 Nardalert S3

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 measure­ment mode.

 Condence testing of RF/microwave sensors can be accomplished with

a simple 2-way radio that generates more than 1 Watt. An upscale indi­cation should be noticed on the display when the radio is transmitting
close to the sensor housing. Narda oers portable sources to accom­plish 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 specied at the AC

input on the Charger. The AC mains charger could be destroyed if
the voltage specication of the charger does not match the AC line
voltage.

13Nardalert S3 Narda

2 Safety instructions

Narda 14 Nardalert S3

3 Preparing the Nardalert S3 for use

This chapter describes all you need to do before starting to use the
Nardalert S3.

3.1 Unpacking

3.2 Instrument overview

3.3 Connecting the sensor

3.1 Unpacking

Packaging

The packaging is designed to be re-used as long as it has not been
damaged.

 Keep the original packaging and use it whenever the instrument needs

to be shipped or transported.

15Nardalert S3 Narda

3 Preparing the Nardalert S3 for use

Items included

 Check that all the following items have been delivered:

NS3 carrying case (P/N 11230500)

Nardalert S3 (P/N 2270/01)

Silicon sleeve (P/N 11229700, attached to Nardalert S3)

Cable, USB “A” male to USB mini “B” male (P/N 70889004)

Lanyard clip (P/N 11229312)

Belt clip (P/N 11229310)

Battery (P/N 70881000, inside Nardalert S3)

User's Guide and CD-ROM (P/N 43068000)

12 VDC car charger (P/N 70914000)

AC charger and plugs (P/N 70890000, packed separately)

At least one sensor will be required for the monitor to operate properly.

Narda 16 Nardalert S3

3.2 Instrument overview

Transport damage

Instrument/accessories damaged during transportation

Using damaged instrument/accessories can lead to subsequent damage.

 Check the instrument and all accessories for damage when you have

unpacked them.

 If the instrument is damaged, contact your Narda Service Center.

The addresses of Narda Service Centers are listed in Chapter 6 of this
Operating Manual and on the internet at www.narda-sts.com.

After transport and storage

Condensation on an instrument can lead to damage

Condensation can form on an instrument that has been stored at a low
temperature when it is brought into a warm room. It may be damaged if
used.

 Wait until all visible condensation has evaporated from the instrument

surface to avoid damaging the instrument.

Note: The instrument is not ready for use until it has reached a tempera­ture within the operating range of -10°C to +50°C.

3.2 Instrument overview

Top Panel

Power On/O
and Enter Key

Alarm LEDs

Up Arrow
(Increase)

Down Arrow
(Decrease)

17Nardalert S3 Narda

3 Preparing the Nardalert S3 for use

Front Panel

Alarm LEDs

Interchageable
Sensor

Rear Panel

Sensor
Removal
Screws (2)

Calibration Label

Narda 18 Nardalert S3

Side Panels

3.3 Connecting the sensor

Mini-USB port for
charging and data
transfer.

Fiber Optic port for
data transfer only.

Rechargeable and
replaceable battery
located under door.

3.3 Connecting the sensor

If the Sensor is not operating properly, or if
the proper sensor is not chosen,

you could be exposed to high eld levels without
your knowledge.

 Refer to Sensor Specications on page 39 to

select appropriate sensor(s).

 Folow instructions below to properly connect

sensor.

The NS3 is designed to monitor the presence of the sensor and that the
sensor is functional. In order to simplify the turn-on procedure, it is recom­mended that the sensor be connected to the NS3 and the battery fully
charged before beginning.

 Ensure that the sensor is attached properly to the basic unit. The sen-

sor is positioned so that it easily can be inserted and secured to the
basic unit by tightening the two screws shown in Section 3.2. 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

WARNING

19Nardalert S3 Narda

3 Preparing the Nardalert S3 for use

to perform connection test. If the sensor is defective, not installed or
failing pre-test, it will cause the system to not proceed to measure­ment mode.

 Charging of the monitor is accomplished by attaching the proper AC

mains plug to the charger and then the supplied USB cable to the
charger and NS3. The unit will be rapidly charged when using the
supplied USB charger and at a slower rate (longer time) if plugged into
a computer. Charging time is approximately 4 hours for a full charge.
Note the battery Icon in the top right of the display when the unit is
energized, indicating the amount of charge.

 Condence testing of RF/microwave sensors can be accomplished

with a simple 2-way radio that generates more than 1 Watt. An upscale
indication should be noticed on the display when the radio is transmit­ting close to the sensor housing. The NS3 provides a menu screen "Self
Test", to evaluate the output from the three detectors used in the RF/
microwave sensors.

 Before beginning any RF radiation measurement, always try to verify

the frequencies and eld strengths that you could be expected to
encounter.

There are many dierent sensors available for dierent applications and
use with the NS3. You can nd more information about the order numbers
and specications of the sensors under Ordering Information on page
43, as well as in the data sheets of the NS3. These documents can also be
downloaded from the Narda website on the internet at:

www.narda-sts.com.

Wrong handling of the sensor

Damage of the sensor antennas

 Always try to store the sensor in the carrying case when not installed

in the NS3. This should help protect it from excessive shock and vibra­tion, as well as environmental extremes.

Narda 20 Nardalert S3

4 Getting started

This chapter describes how to switch on the Nardalert S3 and verify it is
operating properly.

4.1 Initial display screens

4.2 Checking monitor functions

4.3 Screen navigation

4.4 Additional capabilities of optioned units

4.1 Initial display screens

The NS3 is switched on by depressing and holding the On/O button on
the left side of the display. The alarm LEDs will illuminate and the vibrator
will activate before the splash screen (Figure 1) is displayed.

Figure 1 Splash Screen Figure 2 Self Test Screen

The NS3 shows each screen for a few seconds as it performs a self test, veri­es the monitor and sensor’s information and date of calibration before
beginning to measure and display detected elds.

Figure 3

Conguration Screen

21Nardalert S3 Narda

4 Getting started

 If the sensor is defective or not attached to the basic unit, the start-

up sequence will be stopped – screens in Figures 4 and 5 will not be
displayed.

 If the calibration is more than 2 years old for the sensor, or 4 years old

for the basic unit the calibration screen (Figure 4) will have a red back­ground and one of the buttons needs to be depressed to continue.

Figure 4 Calibration

and Date Screen

Figure 5 Normal

Operation Display

(RF/ microwave only)

Figure 6 Alarm levels

and color changes (not

actual screen)

Normal operation

The operation screen (Figure 5) displays the detected elds from the low
and high frequency sensors separately to provide information to the
wearer about the type of source creating the display. The display considers
1 GHz (approximately) as the separator between low and high frequencies.

Alarm indication

If an alarm threshold is exceeded (Figure 6) the top color bar will change
from Green to Yellow (Alarm 1) and from Yellow to Red (Alarm 2), if two
alarms are used. If only one alarm is used, then the color bar will change
from Green to Red (Alarm). The wearer also receives audible, vibrate
and LED visual indications when alarm thresholds are exceeded (factory
defaults).

Narda 22 Nardalert S3

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.

4.2 Checking monitor functions

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 verication.

23Nardalert S3 Narda

4 Getting started

4.3 Screen navigation

Navigation is accomplished by using the Up/Down Arrows and the
Enter Key. The NS3 responds to two types of key depression, “tap” or

“hold.” “Tap” commands are completed by depressing the key for less
than one second, while “hold” is for depressing the key for more than
one second. Key use is further dened in the table below.

Key

Enter

Tap

Enter

Hold (>2
seconds)

Up Arrow

Tap

Up Arrow

Hold (1
second)

Function –

Before Menu
Interface

Light the
backlight.

Start power
down process.

Light the
backlight.

Scroll to next
screen if unit is
not in a safety
alarm state.

Function –

Menu Selection
Screen

Performs the
operation of the
item that the arrow
icon is pointing to.

Start power down
process.

Move the arrow
icon up to the
previous item on
the Menu Selection
Screen. Scroll the
text if necessary.

Function – Sub-Menu Screen

1. If the arrow icon is pointing to the parameter line and
the selection process is not active, start the selection
process.

2. If the arrow icon is pointing to the parameter line
and the selection process is active, accept the current
parameter and place it in hold.

3. If the arrow icon is pointing to the Cancel and Exit
line, return to the Menu Selection Screen without
implementing the change.

4. If the arrow icon is pointing to the Save and Exit
line, implement the parameter change, save the new
parameter in memory and return to the Menu Selection
Screen.

Start power down process.

1. If the selection process is active, scroll to the previous
parameter choice.

2. If the selection process is not active, move the arrow
icon up to the previous item.

Down
Arrow

Tap

Down
Arrow

Hold (1
second)

Light the
backlight.

Scroll to
previous
screen if unit is
not in a safety
alarm state.

Move the arrow
icon down to the
next item on the
Menu Selection
Screen. Scroll the
text if necessary.

1. If the selection process is active, scroll to the next
parameter choice.

2. If the selection process is not active, move the arrow
icon down to the next item.

Narda 24 Nardalert S3

4.4 Additional capabilities of optioned units

4.4 Additional capabilities of optioned units

Your NS3 can be upgraded at any time to a full featured monitor that
displays additional information as well as stores exposure data. This
upgrade can be accomplished by entering a special code through the
NS3-TS software and enabling the upgrade.

Menu selection screens

Below are the various menu screens and their functions.

Alarm Indication

Allows for altering of the alarm indication between Audible and Vibrate,
Audible only or Vibrate only. Factory default is Audible and Vibrate.

Alarm Threshold

Allows alarm threshold levels to be altered. Alarm 1 can be set from 5%
to 100% and OFF. Alarm 2 can be set from 20% to 200%. Factory default is
Alarm 1 at 50% and Alarm 2 at 200%.

Backlight

Allows setting of display backlight times to OFF, 10 seconds, 30 seconds, 1
minute and Permanent ON. Factory default is 10 seconds. Longer backlight
times result in lower operating time.

Data Log

Sets data logging rate from 4 per second, 1 per second, 5 seconds, 20
seconds or 1 minute. Factory default is 1 sample per second.

Factory Defaults

Resets all monitor functions back to Factory Default values.

F/O Interface

Sets ber optic interface for communication or remote vibrator operation.
Factory default is the communication setting.

History

Displays maximum, minimum and average readings for the last 6 minutes.

Last Calibration

Displays last calibration dates for sensor and monitor.

25Nardalert S3 Narda

4 Getting started

Model Information

Displays information about the monitor and rmware version as well as
sensor information.

Sensor Test

Displays individual sensor output for user to self-test system for proper
function.

Navigating sub-menu screen example

1. Tap the Button when arrow is pointing at
Alarm Indication. NS3 display changes to:

2. Tap the key again to select item to be
modied. Item is highlighted to conrm
selection.

3. Tap either the or
arrow to cycle through
choices.

4. Tap the again to select choice. Choice is
not conrmed until you “Save and Exit.”

5. Tap the arrow once to get to the “Cancel
and Exit” selection. Tap
function without implementing the
parameter change.

6. To implement the change and to store it in
memory so the next time the unit is powered
up it will recall the setting, move the arrow
icon to the “Save and Exit” line (by tapping

twice). Tap the key to return to the

menu selection screen.

to leave the

Narda 26 Nardalert S3

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 congured for your personal use. The
factory provides both a lanyard attachment and a belt clip for your conve­nience, and a silicon skin to help provide protection for the unit against
shock.

Once you have veried the proper mounting conguration 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 briey 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.

27Nardalert S3 Narda

5 Operation overview

Alarms are indicated by the screen, LEDs, audible and vibrate alarms. In
an Alarm 1 situation the tone and vibrator alternate at an approximate 1
second rate. Red and Amber LEDs will also illuminate on one side of the
display. Exceeding the Alarm 2 threshold will cause the audible alarm to
step through 5 tones while the vibrate rate is doubled from the Alarm 1
rate. Red and Amber LEDs on both sides of the display will illuminate alter­nately. If customers choose to employ only one alarm, it will indicate Alarm
2 characteristics.

The battery icon is always displayed on the unit. When the battery displays
a “Red” background there is less than 20% life left and the unit should be
charged immediately. If the battery level falls below 10%, audible and LED
alarms will be generated without vibration or LCD backlight.

5.2 Special environmental operations

Heavy rain or snow

The NS3 was designed to be water resistant. It is recommended that the
silicon skin be employed as the minimum measure to keep water from
pooling within the unit. It is NOT recommended to wear the monitor inside
of clothing as wet garments can seriously attenuate microwave eld levels
the unit may need to detect.

Extreme low temperatures will cause the LCD to respond slowly and for
the battery life to be degraded, however the unit will continue to function
to -20° C.

High ELF environments

The normal NS3 (with RF/microwave sensor) was not designed to func­tion in areas where the ELF eld strength is greater than 6 kV/m. Higher
ELF eld levels can cause the NS3 to false alarm. If operation is needed in
higher eld levels, special sensors can be supplied. Contact the factory
([e-mail]) for further information.

High RF/microwave environments

The NS3 has not, at the time of this writing, developed a high power sensor
for use with RF clothing. Persons wearing RF clothing should not use this
monitor under the clothing. Currents owing through the clothing could
cause the monitor to false alarm.

Narda 28 Nardalert S3

5.3 Using the Nardalert S3 as an area monitor

5.3 Using the Nardalert S3 as an area monitor

The NS3 functions as an eective, stand-alone area monitoring device. It
may be operated continuously from the USB supply while employing the
Fiber Optic interface for communicating eld level information back to a
computer. Multiple NS3s can be connected to the Narda NBM-580 meter
(up to 8) which functions as an interface between sensors and alarms. In
Section 8.4, Optional Accessories , there are part numbers given for ber
optic cables as well as the F.O. to USB adapter that would be required in
order to provide area monitoring operation.

29Nardalert S3 Narda

5 Operation overview

Narda 30 Nardalert S3

6 Instrument maintenance

6.1 Cleaning the monitor

6.2 Verication overview

6.3 Authorized service centers

6.4 Disposal

6.1 Cleaning the monitor

NOTICE

Damage to the monitor from liquids

The instrument may be damaged or destroyed if
liquids are allowed to get inside the casing.

 Make sure that no liquid gets inside the

instrument

NOTICE

Solvents

Solvents can corrode the surfaces of the basic
unit, sensor and AC Adapter / Charger.

 You must not use solvents to clean the basic

unit, sensor and AC Adapter / Charger.

1. Use a soft cloth to clean the monitor. You can use lukewarm water to
which a little detergent solution has been added as a cleansing agent.

2. To prevent streaks and spots, wipe o the monitor with a dry cloth
while it is still damp.

31Nardalert S3 Narda

6 Instrument maintenance

6.2 Verication overview

Simplied block diagram

To PC

Push

Button

Controls

Fiber Optic

Connection

Micro-controller with RAM, EEPROM MUX, A/D CONVERTOR,

PWM, RTC and RESET

Audio and

Vibrate Alarms

USB

Connection

LCD and LED Displays for

Notication and Alarms

Theory of operation

Batteries

and B2

B1

Removable

Field Sensor

with EEPROM

The NS3’s patented design can be supplied with RF/microwave sensors
(2271/XX) that detect the electric eld over an extremely broad frequency
range regardless of signal type or polarization.

• The low frequency detector is a low-impedance, surface-area type
designed to detect the radial elds that are characteristic of low-fre­quency communications systems. The diode based detection operates
in its “square-law” region to yield accurate results even in complex,
multi-signal environments.

• A diode-dipole antenna is added to complement the low frequency
sensor in the UHF region and to optimize detection of any and all
polarizations.

Narda 32 Nardalert S3

6.2 Verication overview

• Higher microwave frequencies (>2 GHz) are primarily detected with
thermocouple arrays. This detector is a true “square-law” sensor that
will always yield RMS average results, even in a pulse-modulated expo­sure environment.

• Individual outputs from all three detectors are processed by the NS3
with their calibration information supplied by the sensor’s imbedded
EEPROM. All units are individually calibrated to facilitate eld support.

The NS3’s design utilizes RF shielding and absorbers to isolate it from
reections or scattering produced by the monitor, or the human body.
In general, the monitor cannot detect microwave elds from behind the
body when it is worn on the front of the body. At low frequencies (<100
MHz), however, the body can act as an antenna and introduce energy into
the monitor, even when the source is from behind the wearer.

Testing RF/microwave sensors

The NS3 includes a menu screen (Sensor Test) that allows users to generate
their own signal to see the monitor respond. Note that your signal’s power
and frequency need to be sucient to register a response on the monitor.
North American users may nd that a common “family radio” operating at
433 MHz and at least 2 Watts of power can be used as a simple, but eec­tive test source.

Required equipment for testing RF/microwave sensors

Standard “elds” need to be established with relatively high RF powers
required (>10 Watts). The NS3 is factory tested inside of a “TEM” cell at
frequencies below 300 MHz, and then positioned in front of standard gain
horns from 300 MHz to 50 GHz. Special arrangements are made by Narda
to test frequencies above 50 GHz. Refer to IEEE 1309 Standard for eld
generation methods.

This document is not intended to train the reader in the art of generating or
verifying the elds used to excite the NS3. Readers are cautioned to review
or familiarize themselves with the various international standards setting
groups that oer guidance in this engineering discipline.

33Nardalert S3 Narda

6 Instrument maintenance

Operational tests

Units should be visually inspected for complete and correct battery condi­tions, switches and overall mechanical integrity. Units should pass the
“Turn-on” sequence and indicate full or nearly full battery condition.

After successful completion of operational testing, units should be
connected to a computer through the Fiber Optic port, to verify communi­cation capability.

! All NS3 models need to be returned to their local calibration facility at

least once every 4 years for replacement of their internal clock battery.
There are no operator accessible controls or written procedures avail­able to perform this critical step. If batteries are not changed they may
pose a safety hazard as well as damaging the NS3 itself.

Required eld response by design

0.1 to 10 MHz = Radial Only

10 to 1600 MHz = Radial and Vertical

1.6 to 100 GHz = Vertical and Horizontal

Maximum errors are as follows:

+4.5 / -3.0 dB for 100 kHz to 30 GHz

+2.5 / -6.0 dB 30 to 50 GHz

+2.5 / -6.0 dB 50 to 100 GHz, Typical

TEM cell (f < 300 MHz)

The NS3 is factory veried in a one-meter TEM cell, for frequencies
between 100 kHz to 300 MHz. Since it is responsive to the radial compo­nent, it is positioned halfway between the septum and outer wall, in the
radial orientation (Label facing septum). The LEDs should be facing away
from the opening of the TEM cell when using remote cables to collect data,
however the unit can be positioned with the LEDs facing the front of the
TEM cell when manually verifying performance.

Generally the unit is tested at 1, 10, 50, 100, 150, 200 and 300 MHz while in
the TEM cell. Power should be increased slowly until the NS3 alarms at the
set Alarm 1 level (50%). Slowly decrease and then increase power again to
determine dB dierence from calculated to actual alarm points.

Narda 34 Nardalert S3

Anechoic chamber (f > 300 MHz)

The NS3 is factory calibrated in an anechoic environment at frequen­cies above 300 MHz. Narda utilizes double-ridged waveguide horns for
measurements up to 2 GHz and standard gain horns for higher frequen­cies. At frequencies equal and below 1.6 GHz, the NS3 is tested in the
vertical and radial positions, and above that frequency in vertical and
horizontal positions. The units are calibrated at a distance of 1 meter from
the face of the horn to the front surface of the monitor.

6.3 Authorized service centers

Narda STS products are designed to help protect persons from high-level
EMF elds. Therefore, they should be periodically calibrated and serviced
by only authorized facilities that have the critical equipment and capability
to service these unique products. Narda products can be returned to:

US Facility L-3 Communications Narda-East

435 Moreland Road

Hauppauge, NY 11788
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]

6.3 Authorized service centers

Germany Facility NardaSTS GMbH

Sandwiesenstrasse 7
72793 Pfullingen GERMANY
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]

UK Facility Link Microtek

High Point, Church Street
Basingstoke, Hampshire RG21 7QN UK
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]

35Nardalert S3 Narda

6 Instrument maintenance

6.4 Disposal

This product is subject to European Guideline 2002/96/EC governing the
disposal of waste electrical and electronic equipment (WEEE).

Do not dispose of this instrument with the normal household waste. You
should dispose of it in accordance with the waste disposal ordinances in
your country.

Within the European Union, all electronic measuring systems purchased from
Narda after 13th August 2005 can be returned when they reach the end of
their useful life. The measuring systems that come under this regulation or
the documents that accompany them are clearly marked with the symbol of
a garbage bin crossed out with black lines. You can obtain further information
from your local Narda Sales Partner or at: www.narda-sts.com.

CAUTION

Your Nardalert S3 contains a Lithium ion battery pack.

There is a risk of re and burns if the battery pack is handled
improperly.

 Do not disassemble, crush, puncture, short external contacts, or
dispose of in re or water.

 Do not attempt to open or service the battery pack.
 Replace only with the battery pack designated for this product.
 Recycle or dispose of batteries properly. Do not discard with

your regular trash.

Narda 36 Nardalert S3

7 Specications

7.1 Monitor specications

7.2 Sensor specications

7.3 Outline drawing

7.4 Declaration of conformity

7.5 Declaration of origin

37Nardalert S3 Narda

7 Specications

7.1 Monitor specications

Display Type TFT Transmissive
Display Size 1.77 inches, 28 x 35 mm, 128 x 160 pixels
Backlight White LEDs
Display Refresh Rate 250 msec.

Memory

Storage Rate

Storage Time

62,000 events
4 per second, 1 per second, 1 per 5 seconds,

1 per 10 seconds, 1 per 20 seconds, 1 per 60 seconds
Variable - from 4.3 hours (4 per second),

to 43 Days (1 per 60 seconds)

Remote Operation

USB

Via USB or Optical RS-232 Interface
Serial, Full Duplex, 57600 baud (virtual com port),

multi-function plug connector

Optical Interface

Serial, Full Duplex, 57600 baud, no parity, 1 start bit,
1 stop bit

Recommended
Calibration Interval

Temperature Range

Humidity

a

4 years

Operational: -10°C to +50°C
Non-operational (transport): -30°C to +70°C
5 to 95% relative humidity, no condensation;

≤29 g/m³ absolute humidity (IEC 60721-3-2 class 7K2)

Size (minimum) 117.1 x 82.6 x 31.8 mm (4.61 x 3.25 x 1.25 in.)
Weight 0.5 lbs. (0.23 kg), with sensor

AC Charger with Plugs, Car (12VDC) Charger,

Accessories

(included)

Charger/Data cable (USB), Carrying Case, Belt Clip,
Lanyard Clip, User's Guide, NS3-TS Software,
Calibration Certicate(s)

a

Only for basic instrument; sensors are specied separately

Narda 38 Nardalert S3

7.2 Sensor specications

At the time of this publishing, four sensors are available for the NS3. That
number will increase and later revisions of this manual will also cover those
items.

7.2 Sensor specications

Sensor

Frequency
Range

Field Measured Electric Field, V2/m
Sensor Design Radial Field, Diode-Dipole and Thermocouple Array

Frequency
Sensitivity

CW Overload 3000% of Standard or Guidance
Peak Overload 32 dB Above Standard or Guidance (related to 100%)
ELF Immunity 6 kV/m

Recommended
Calibration
Interval

7.3 Outline drawing

2271/01

FCC

100 kHz to

50 GHz

2271/11

IEEE

3 MHz to

50 GHz

2271/21

SC6

100 kHz to 50 GHz

2

+4.5 / - 3.0 dB (100 kHz to 30 GHz)

+2.5 / -6.0 dB (30 to 50 GHz)

+2.5 / - 6.0 dB (50 to 100 GHz, Typical)

2 years

2271/31

ICNIRP

1.25 in.

(31.8 mm)

4.61 in.

(117.1 mm)

3.25 in.

(82.6 mm)

1.65 in.

(41.9 mm)

39Nardalert S3 Narda

7 Specications

7.4 Declaration of conformity

Narda 40 Nardalert S3

7.5 Declaration of origin

7.5 Declaration of origin

Country of Origin United States of America

41Nardalert S3 Narda

7 Specications

Narda 42 Nardalert S3

8 Ordering information

This chapter contains the information needed for ordering the NS3,
together with its sensors and accessories.

8.1 Nardalert S3 part numbers

8.2 Sensor part numbers

8.3 Nardalert S3 system part numbers

8.4 Optional accessories

8.1 Nardalert S3 part numbers

Nardalert S3 Set 1 Narda Broadband Field Monitor

Includes*:
Nardalert S3 Basic Unit, including 1 x LIon battery,

RCR123A (2270/01)
Carrying Case, holds monitor, charger and accessories

(11230500)
AC Charger and Plugs (70890000)
12 VDC Car Charger (70914000)
Belt Clip, non-conductive (11229310)
Lanyard Clip, non-conductive (11229312)
Cable, USB interface for NS3, 1 m (70889004)
User's Guide and CD-ROM (43068000)
*Sensors are NOT included

2270/101

Data Logging Option for NS3 (Option Key) 2270/90.01

43Nardalert S3 Narda

8 Ordering information

8.2 Sensor part numbers

Sensor Module, FCC 1997 “Occupational/Controlled” 2271/01
Sensor Module, IEEE C95.1-2005, “Controlled” 2271/11
Sensor Module, Safety Code 6, “Controlled” 2271/21
Sensor Module, ICNIRP 1998, “Occupational” 2271/31

8.3 Nardalert S3 system part numbers

Nardalert S3 with FCC Sensor Module 2271/101
Nardalert S3 with IEEE Sensor Module 2271/111
Nardalert S3 with SC6 Sensor Module 2271/121
Nardalert S3 with ICNIRP Sensor Module 2271/131

8.4 Optional accessories

Cable, optical ber, duplex (1000 μm) RP-02, 2 m 2260/91.02
Cable, optical ber, duplex (1000 μm) RP-02, 20 m 2260/91.03
Cable, optical ber, duplex (1000 μm) RP-02, 50 m 2260/91.04
Cable, optical ber, duplex, F-SMA to RP-02, 0.3 m 2260/91.01
Nardalert S3 Mounting Bracket (for xed monitoring) 11232200
Fiber Optic Converter RS232, RP-02/DB9 2260/90.06
Fiber Optic Converter USB, RP-02/USB 2260/90.07
Cable, adapter, USB 2.0 - RS232, 0.8 m 2260/90.53
Extra copy of software and manuals 43068000

Narda 44 Nardalert S3

Warranty information

Narda Safety Test Solutions (Narda STS) warrants each product to be
free from any defect in material and workmanship for a period of
two years after delivery to, and return by the original purchaser. All
warranty returns, however, must first be authorized by a factory office
representative.

The limit of liability under this warranty shall be to repair or replace any
product, or part thereof, which proves to be defective after inspection by
Narda STS. This warranty shall not apply to any Narda STS product that has
been disassembled, modied, physically or electrically damaged or any
product that has been subjected to conditions exceeding the applicable
specications or ratings.

Warranty information

Narda STS shall not be liable for any direct or consequential injury, loss or
damage incurred through the use, or the inability to use, any Narda STS
product.

Narda STS reserves the right to make design changes to any Narda STS
product without incurring any obligation to make the same changes to
previously purchased units.

This warranty is the full extent of obligation and liability assumed by
Narda STS with respect to any and all Narda STS products. Narda STS
neither makes, nor authorizes any person to make, any other guarantee or
warranty concerning Narda STS products.

45Nardalert S3 Narda

43067900 Rev. A

®

USA

435 Moreland Road
Hauppauge, NY 11788, USA
Phone: [phone]
Fax: [phone]
E-Mail: [e-mail]
www.narda-sts.us

Germany

Sandwiesenstrasse 7
72793 Pfullingen, Germany
Phone: [phone]
Fax: [phone]
E-Mail: [e-mail]
www.narda-sts.de

Italy

Via Leonardo da Vinci, 21/23
20090 Segrate (MI) ITALY
Phone: [phone]
Fax: [phone]
E-Mail: [e-mail]
www.narda-sts.it