Atec A8860, A8862, A8864 User Manual

RF Safety

Test Solutions

Personal and Area Monitors

Nardalert XT Personal Monitor

100 kHz to 100 GHz

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Shaped Frequency Response

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Matched to Your Standard
Data Logger Records Continuously

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– more than 30,000 data points
Five High-Intensity LED Level Indicators

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Tri-Sensor Handles All Types of Fields

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Two Adjustable Audio Alarms

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Adjustable Vibrator Alarm

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Long Battery Life

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Patented Design

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Description

The Nardalert XT family of RF personal monitors is de­signed to satisfy the needs of virtually all individuals who
use an RF personal monitor.

· Models are available that closely conform to all major
worldwide standards.

· The adjustable alarm feature allows one alarm to be
set at a level equal to the upper tier of two-tier stan­dards, such as “Occupational” or “Controlled” limits,
while the second alarm can be set to the lower tier,
such as the “Uncontrolled” or “General Population"
limits.

·

The ultra-broadband sensors cover almost the entire
usable RF spectrum in a single monitor.

·

The unique tri-sensor design handles every possible
signal format, from complex multi-signal communica
tion environments to military platforms with both com
munications and radar signals.

·

The five flashing high-intensity LED level indicators
can be seen while wearing the monitor, even out
doors in the sun.

·

There are four different ways to wear the monitor –
pocket clip, belt clip, soft case with belt clip (optional)
and soft case for climber’s harness (optional).

·

The audio alarm has two distinct sounds that are as
sociated with the two different alarm thresholds. Both
alarm thresholds can be adjusted using the optional
Interface Kit.

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-

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· The user can select an audio alarm, a vibrator alarm,
both audio and vibrator, or an optional remote vibra­tor. The remote vibrator can be used in areas with
high ambient noise when the user is wearing heavy
clothing that would prevent the detection of the inter­nal vibrator.

· The data logger is always on. The logging interval can
be adjusted using the optional Interface Kit.
At the default setting, the average field strength is
logged every five seconds with the data logger retain­ing more than 40 hours of information before it starts
to write over the oldest data.

·

Either one or both of the two LEDs that indicate the
lowest levels (10% of Standard and 20% of Standard)
can be deactivated using the optional Interface Kit for
applications where it is desirable to indicate only
higher field strengths.

Applications

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Nardalert XTs are usable over their entire rated frequency
range when worn on the body as an RF personal monitor.
The patented sensor design detects the electric field over
an extremely broad frequency band regardless of signal
format or polarization.

·

The low frequency sensor is a low impedance, sur
face-area sensor designed to detect the radial fields
that are characteristic of low-frequency communica
tion systems. The compensated diode detector yields
accurate results even in highly complex, multisignal
environments.

50 Years of

Excellence

US Patents 6,154,178 5,600,307 5,168,265
International Patent 1008856

-

-

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RF Safety

Test Solutions

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Excellence

The diode-dipole design complements the low

·

frequency sensor in the UHF region by detecting
vertically polarized fields. The combination of the two
sensors detects all polarizations.

The microwave band sensor uses thermocouple

·

detectors. Thermocouple arrays function primarily
as dipole antennas up to about 10 GHz. At higher
frequencies, the sensor increasingly functions in the
traveling-wave mode of detection. This enhances the
sensor’s sensitivity and allows it to function accurately
up to 100 GHz and beyond. Thermocouple
detectors are always true RMS detectors and yield ac
curate results even with extremely narrow radar
pulses.

The 8861 Series is specifically designed for use in strong
ELF fields, such as where wireless antennas are mounted
on towers that carry high voltage 50/60 Hz utility power.
The 8860 and8862 Series NardalertXT models arenot de
signed for this environment and false alarms may occur.

The 8864 Series is specificallydesigned tobe wornon the
outside of RF protective suits since monitors do not func­tion properly when worn underneath these suits. RF pro­tective suits generally provide a minimum of 10 dB (10:1)
protection. The 8864 Series monitorssound an alarm at high
field levels to warn the wearer that they are in an area where
the RF protective suits may not be sufficient protection.

Personal and Area Monitors

The pocket clip supplied
with the monitor allows
you to wear the monitor in
side your shirt pocket
while maintaining the top
of the monitor near the top
of the pocket, regardless
of pocket size. This allows
you to view the LED
level-indicators.

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The belt clip supplied with

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the monitor snaps on the
monitor case in place of
the pocket clip. It has a
strong spring and retain
ing hook that makes an ac
cidental detachment from
your belt unlikely.

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Model 8865 Interface Kit

The Model8865 Interface Kit, although not required, allows
Nardalert XT users to perform two important functions:

·

Adjust several monitor parameters, such as
alarm-threshold settings and data-logging rate

·

Download and analyze logged data

The Nardalert XT is ready to use upon receipt. If you want
to take advantageof these additional features all you need
is one Interface Kit per location. For example, if your New
York office has 30 Nardalert XTs, all you need is one Inter
face Kit. Of course, if you also have monitors in another
city, then you will probably want a kit for every city.

The Model 8865 Interface Kit is comprised of:

·

A small electronic module that connects the Nardalert
XT to any Windows

·

The Nardalert XT User’s Software (CD)

·

A cable to connect the module and the PC (RS-232)

·

A cable to connect the module and the monitor

·

A plastic storage box

®

compatible personal computer

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The User’s Software is very easy to use. Although a com
plete manual is included on the CD and is available from
the help menu, fewusers ever needto referto the manual.
A “tool tip” appears for every control and window when
you pause the cursor near the control. Anyone familiar
with Windows programs has seen the words “Cut” or
“Paste” appear in other programs.

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RF Safety

Test Solutions

Personal and Area Monitors

Data

Logged data is downloaded. Once it is downloaded you
can:

Analyze it on screen with a variety of tools. For exam

·

ple, even though the data is collected in terms of
five-second average exposure (default setting), the
User’s Software allows you to smooth the data and
average it over longer periods of time

Create reports

·

Export the data to other programs such as word pro

·

cessors, spreadsheets, or data bases

Header defines data
that is being viewed

50 Years of

Excellence

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A new record is created every time the monitor is turned on.

This screen makes it easy to find any record.

Monitor model and
serial number that
logged the data

Quickly find the
minimum, maximum
and average values

Smooth the data

using time averaging
The cursor can indicate
value, data point and time

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Safety Test Solutions

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RF Safety

Test Solutions

50 Years of

Excellence

Data Reports

The histogram shows the distribution of data points.

Monitor Settings

Personal and Area Monitors

Configure a report to print directly or

for export to a word processor.

The User’s Software allows you to change seven parameters to tailor the Nardalert XT’s operation:

Parameter Default Options

Alarm 1 Threshold 50% of Standard

Alarm 2 Threshold 200% of Standard

10% LED

20% LED

a

a

Logging Rate

Maximum Hold

Time & Date Greenwich Mean Time (GMT) Local Time & Date

a

Values for 8864 Series are five times higher

b

Averaged over the interval

Change one or both
alarms to fit your
needs

Active Inactive
Active Inactive

Every five seconds

Off

a

a

b

10% to 100%
20% to 200%

1 second to 6 minutes

Highest One-Second Average;

Highest Average (10 seconds to 6 minutes)

Change the logging rate
to get either more data
points or a longer
logging time

c

Turn one or two LED
Indicators off so that
low field levels are
not indicated

The User Parameter setup screen makes it easy to set the

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monitor to meet your needs

The monitor can be
set to indicate the
highest peak field or
the highest average
field

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Safety Test Solutions

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RF Safety

Test Solutions

Personal and Area Monitors

There are four series of Nardalert XT RF monitors. Within
each series, the specifications are essentially identical ex
cept for the sensor “shaping.” Each specific standard or
guidance requires some differences in the sensor design
and calibration. The four Nardalert XT series are:

8860 Series:

This is the full-featured, NardalertXT series that includesall
the user-adjustable parameters plus the ability to log more
than 30,000 data points automatically whenever the moni
tor is turnedon. The data-logger feature can be used to an
alyze personnel exposures in order to improve operations.
Or it can be used in the way a Flight Data Recorder is used
on board an aircraft – the logged data can be reviewed
whenever there is a need to determine an individual's level
of exposure.

8861 Series:

The 8861 Series is designed for applications where the
user will be in close proximity to strong ELF fields, such as
from 50/60 Hz power lines.These monitors are very similar
to the standard, full-featured series except that the inside
of the housing has a special conductive coating that
blocks the ELF signals. The low frequency range of these
monitors is reduced by the coating.

50 Years of

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Soft cases are recommended for use by climbers
and in severe weather: (l. to rt.) climber-harness
case; case front; belt-clip case

8862 Series:

This series is identical to the full-featured 8860 Series ex
cept they do not include the data-logging capability.

8864 Series:

This series is identical to the full-featured 8860 Series with
one exception: these high power monitors function at field
levels five times higher than all other model series.

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Model Selection Guide

STANDARD / GUIDANCE

ACGIH
AS/NZ 2772.1 (1998, draft)

Occupational
Canada Safety Code 6 99-EHD-237

RF / Microwave Worker
DIN VDE 0848, Part 2, October 1991 Area 1

Occupational
ENV 50166-2

Occupational
FCC 1997

Occupational / Controlled
ICNIRP 1998

Occupational
IEEE C95.1-1999/ANSI C95.1-1992

Controlled
Japan RCR-38

Controlled
NATO STANAG 2345 B8860 B8861 B8862 B8864
ÖNORM S 1120, 1992

Occupational

8860 SERIES 8861 SERIES 8862 SERIES 8864 SERIES

B8860

D8860 D8861 D8862 D8864

C8860 C8861 C8862 C8864

D8860 D8861 D8862 D8864

D8860 D8861 D8862 D8864

A8860 A8861 A8862 A8864

D8860 D8861 D8862 D8864

B8860 B8861 B8862 B8864

A8860 A8861 A8862 A8864

A8860 A8861 A8862 A8864

NARDALERT XT MODELS

B8861 B8862 B8864

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RF Safety

Test Solutions

50 Years of

Excellence

Personal and Area Monitors

Specifications

SERIES 8860 8861 8862 8864

Frequency Range

100 kHz to

100 GHz

Frequency Sensitivity

Polarization

Sensors (All E-field)

Low-band surface area detector, diode / Mid-band dipole, diode / High-band thermocouple

Alarm Indicators

LEDs

Audio Alarm 1

Audio Alarm 2

Vibrator, Internal and Remote

Alarm Threshold

b

a

Alarm 1, Default Setting

Range of Adjustment

c

10% to 100% of Standard in increments of 5%

Alarm 2, Default Setting

Range of Adjustment

Vibrator, Internal and Remote

LED Indicators

c

a

20% to 200% of Standard in increments of 5%

Same Threshold as Alarm 1

10%, 20%, 50%, 100% and 200%

CW Overload

Peak Overload

Memory

d

Number of Data Points

31,263

Logging Interval, Default

c

Range

Logging Time @ rate of 12/min

Maximum Hold Modes

c

ELF Immunity

1-60 sec. in 1 sec. inc.

1.5-6.0 min. in 0.5 min. inc.

42.3 hrs

6,000 V/m

Battery Type / Life (approx.)

Temperature: Operating

Non-operating

Humidity

Weight (including battery)

Size

Color

Accessories Supplied

Optional Accessories

NOTES:aRemote vibrator, P/N 11110100, is available as an option. It operates from its own battery.

b

Percent-of-Standard percentages are in terms of equivalent plane-wave power density relative to the Standard or Guidance.

c

The Interface Kit is required to make adjustments to the monitor settings and/or to download logged data.

Model 8865 Interface Kit, Soft Case with Belt Clip

for Climber’s Harness

10 MHz to

100 GHz

100 kHz to

100 GHz

100 kHz to

100 GHz

+3/-1 dB (500 kHz to 50 GHz), ±3 dB (Full Bandwidth)

± 1.5 dB

Five High Intensity Flashing, 2 Yellow, 3 Red

Steady Tone

Variable Tone

Continuous

50% of Standard

250% of Standard

50% to 500% of Std. in inc. of 5%

200% of Standard

1000% of Standard

100% to 1000% of Std. in inc. of 5%

Same Threshold as Alarm 1

50%, 100%, 250%, 500% and 1000%

of Standard

of Standard

3000% of Standard or Guidance

32 dB above Standard or Guidance

31,263

5 sec.

—

5 sec.

1-60 sec. in 1 sec. inc.

1.5-6.0 min. in 0.5 min. inc.

42.3 hrs

Off, Instantaneous (1 sec. avg.), Averaged up to 6 Minutes

100,000 V/m

6,000 V/m 6,000 V/m

1 x AA Alkaline / 1500 hrs. with LEDs and Alarms OFF

-10°C to +55°C

-20°C to +55°C

0 to 95%, non-condensing

157 g. / 5.5 oz.

10.5 cm H x 7.6 cm W x 3.5 cm D / 4.12" H x 3.0" W x 1.37" D

Gray

Pocket Clip, Belt Clip, Plastic Storage Box, Battery, User’s Guide

(P/N 21847700) and Remote Vibrator (P/N 11110100)

(P/N 21847600), Soft Case

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