Narda D8861

Personal & Area Monitors
Nardalert XT
RF PERSONAL MONITORS
US Patents 6,154,178 5,600,307 5,168,265
International Patent Pending
• 100 kHz to 100 GHz
• Shaped Frequency Response Matched to Your Standard
• Data Logger Records Continuously – more than 30,000 data points
• Five High-Intensity LED Level Indicators
Preliminary
Specifications
• Tri-Sensor Handles All Types of Fields
• Two Adjustable Audio Alarms
• Adjustable Vibrator Alarm
• Long Battery Life
• Patented Design
DESCRIPTION
The new 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 communication environments to military
platforms with both communications and radar signals.
❖ The five flashing high-intensity LED level indicators can be seen
while wearing the monitor, even outdoors 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 associated with
the two different alarm thresholds. Both alarm thresholds can be
adjusted using the optional Interface Kit.
❖ 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.
Nardalert XT
Interface Kit
Allows you to adjust
several monitor
parameters – and you
can download and
analyze logged data.
❖ 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.
Model 8865 includes:
• Windows®
compatible
User’s Software
• Interface Module
• Cable to connect
Module to PC
APPLICATIONS
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.
• Cable to connect
Module to
Nardalert XT
❖ The low frequency sensor is a low impedance, surface-area sensor
designed to detect the radial fields that are characteristic of
low-frequency communications systems. The compensated diode
detector yields accurate results even in highly complex, multisignal environments.
ONE INTERFACE KIT
PER LOCATION IS
RECOMMENDED
❖ 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 accurate 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 and 8862 Series Nardalert XT
models are not designed for this environment and false alarms may occur.
Nardalert XT RF Personal Monitors
Page 2
There are three series of Nardalert XT RF monitors. Within each series, the specifications
are essentially identical except for the sensor “shaping.” Each specific standard or
guidance requires some differences in the sensor design and calibration. The three
Nardalert XT series are:
8860 Series: This is the full-featured, Nardalert XT series that
includes all the user-adjustable parameters plus the ability to log
more than 30,000 data points automatically whenever the monitor is
turned on. The data-logger feature can be used to analyze personnel
exposures in order to improve operations. Or it can be used much 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
what levels an individual has been exposed to.
Soft cases are recommended for use
by climbers and in severe weather:
(l. to rt.) climber-harness case; case
front; belt-clip case
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 due to the coating.
8862 Series: This series is identical to the full-featured 8860 Series
except that these monitors do not include the data-logging capability.
MODEL SELECTION GUIDE
STANDARD / GUIDANCE
NARDALERT XT MODELS
8860 SERIES
8861 SERIES
8862 SERIES
B8860
B8861
B8862
D8860
D8861
D8862
C8860
C8861
C8862
DIN VDE 0848, Part 2,
October 1991 Area 1
Occupational
D8860
D8861
D8862
ENV 50166-2
Occupational
D8860
D8861
D8862
A8860
A8861
A8862
D8860
D8861
D8862
B8860
B8861
B8862
Japan RCR-38
Controlled
A8860
A8861
A8862
NATO STANAG 2345
B8860
B8861
B8862
NORM S 1120, 1992
Occupational
A8860
A8861
A8862
ACGIH
AS/NZ 2772.1 (1998, draft)
Occupational
Canada Safety Code 6 99-EHD-237
RF Workers
FCC 1997
Occupational / Controlled
ICNIRP 1998
Occupational
IEEE C95.1-1999/ANSI C95.1-1992
Controlled
Page 3
Nardalert XT RF Personal Monitors
SPECIFICATIONS
Series
Frequency Range
Frequency Sensitivity
8860
8861
8862
100 kHz to 100 GHz
10 MHz to 100 GHz
-1,+3 dB
100 kHz to 100 GHz
Low-band surface area detector, diode
Mid-band dipole, diode
High-band thermocouple
Sensors (All E-field)
Alarm Indicators
LEDs
Audio Alarm 1
Audio Alarm 2
Vibrator, Internal
Vibrator, Remotea
Alarm Thresholdb
Alarm 1, Default Setting
Range of Adjustmentc
Alarm 2, Default Setting
Range of Adjustmentc
Vibrator, Internal
Vibrator, Remotea
LED Indicators
CW Overload
Peak Overload
Memory
Number of Data Points
Logging Interval, Default
Rangec
Logging Time @ rate of 12/min
Latching / Peak Hold Modesc
ELF Immunity
Battery
Type
Life
Temperature Operating
Non-operating
Weight (including battery)
Size
Five High Intensity Flashing, 2 Yellow, 3 Red
Steady Tone
Variable Tone
Continuous
Continuous
50% of Standard
10% to 100% of Standard in Increments of 5%
200% of Standard
20% to 200% of Standard in Increments of 5%
Same Threshold as Alarm 1
Same Threshold as Alarm 1
10%, 20%, 50%, 100% and 200% of Standard
3000% of Standard or Guidance
32 dB above Standard or Guidance
31,263
5 sec.
1-60 sec. in 1 sec. increments
1.5-6.0 min in 0.5 min. increments
42.3 hrs.
—
Off, Instantaneous, Averaged up to 6 Minutes
6,000 V/m
100,000 V/m
6,000 V/m
1 x AA Alkaline
800 hrs. with LEDs and Alarms OFF
-10°C to +55°C
-20°C to +60°C
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
Color
Accessories Supplied
Dark Gray
Pocket Clip, Belt Clip, Plastic Storage Box, Battery, Operating Manual
Optional Accessories
Interface Kit, Soft Case with Belt Clip (P/N 21847600), Soft Case
for Climber’s Harness (P/N 21847700), Remote Vibrator, and Earphone
Notes:
a Remote vibrator, P/N 11093000, 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.
USA: Long Island, NY
Tel 1-631 231-1700 Fax 1-631 231-1711
E-Mail NardaSTS@L-3COM.com
www.narda-sts.com
NSTS 0201-102-5.0
GERMANY: Pfullingen
Tel +49-7121-9732-0 Fax +49-7121-9732-90
E-Mail support@narda-sts.de
www.narda-sts.de
Nardalert XT RF Personal Monitors
Page 4
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