CORNET Microsyslems
ED-25G Electrosmog
meter is a dual mode device for
quick
measurement
of both High frequency
(RF)
Electromagnetic
wave field strength/power
density level
and Low frequency
(LF)
Magnetic field
(Gauss,
Tesla) for living environments.
lt is an excellent
device for
individual or company
with Electromagnetic wave
safety concerns. lt has RF
bandwidth
of 100MHz to
3GHz useful detection range,
high sensitivity of 1 .Suw/m' to
0.58w/m2, and LF
bandwidth of 50Hz to 1SKHz,
sensitivity of 0.1uT to
60uT(1 mG to 600mG). Also with very fast
response
time.
Applications:
-
High frequency
RF Electromagnetic
wave field strenglh and
power
density measurement
-
Low frequency
LF Magnetic field measurement
(Gauss
meter function)
-
Mobile
phone
base station antenna radiation
power
density
measurement
-
Wireless
communication
applications
(AM/FM,
TDMA, cSM, DECT,
CDMA)
-
RF
power
measurement for transmitters
-
Wireless LAN
(Wi-Fi),
Bluetooth, Ultra-wide-band
detection, installation, optimization
-
Spy camera, wireless
bug finder
-
Cellular/Cordless
phone
radiation safety level
measurement
-
AC
power
line,
High voltage tower,
power
Transformer,
motors and small appliance EMF
-
Microwave
oven leakage detection
-
Personal living
environment EMF safety
evaluation
Usage
guide:
Put the
9V battery in the ED25G, Handle
the unit with right hand in vertical direction, and
push
the
power
switch button to turn
on the
power,
it will come up with RF meter mode.
The
RF sensor is located in the left hand
side of the ED25G; the LF sensor is located in the
right
hand top ofthe ED25G,
please
do not cover the sensor area with hand or other
objects.
There are two
push
button below the
power
switch:
"Mode"
button
and
"Hold"
button.
"Mode"
button is
used
to
switch in between RF mode and LF mode. The
"Hold"
button is used
to freeze the
data reading of the ED25G
ln RF mode, measured RF
field strength/power density is shown on the digital LCD
display
(with
dBm and mw/m2). 8 LED
lights. With Red, Yellow, and Green color on the right
hand
side of LCD window is
used for
quick
RF signal level indications.3 Red LEDs
are used to
indicate the 3 safety range. The
power
level of each LED can be found in the table
on the
ED25G
front
panel.
ln LF mode,
measured LF magnetic field strength is shown on the
digital
LCD
display
(with
uT
and mcauss). 8 color LED
lights are used to show the relative strength of the magnelic
fleld.
Histogram of
previous
30
signal level readings are recorded and shown as moving
graph
on the LCD display for both RF
and LF mode.
"Hold"
button can be used to halt
the data measurement of the ED25G, a
"HLD"
mark
will be shown on the LCD screen to indicate
the
"Hold"
condition. Push the
"Hold"
button
again
ED25G
will exit from the
"Hold"
condition.
ln LF
mode, the Maximum value of the magnetic field measured
since the last
power-on
or mode change is shown on the LCD display, this can
be used to record the maximum
magneticfield
automatically inthe area.
(9)
Most high frequency RF antenna such as Mobile
phone
base siation is vertical
polarized
(in
vertical direction), therefore while in RF mode,
the
ED25G
is normally used in vertical
direction. ForLFmode,theLFsensorislocatedin theToprighthandoftheED25Gandthe
meter is normally
used
in Horizontal
position
in LF mode. Please rotate the meter
to find the
maximum reading
direction
in
either case. The maximum reading will also increase
as
you
approach the source. ED25G can be used to find the location of
signal
source.
(10)
Most
of moderh communication devices
(Mobile
phone,
Wireless LAN, Wi-Fi,
etc.,) use digital
communication technology with burst RF signals. When measuring this
type of RF signals,
several LED lights will
blinking at the same time. This is normal and it can be used as an
indication of burst type of RF
signals. For continues waves
(AM/FM)
signals, the LED light will
stable. ED25G measures
peak power
density of signal with very fast response time. lt is more
accurate than the needle
style of readout which only shown the average value
of signal
power
most of the time.
(1
1) While in LF mode magnetic
field measurement,
please
hold the ED25G steady
to
get
the
good
stable reading,
avoid fast moving of the ED25G to
prevent
the sudden
change of
the
reading
caused by the Earth magnetic field.
(12)
To turn-on/turn-off the LCD backlight,
go
into
hold mode first, then toggle the mode switch to
turn-on/turn-off the LCD backlight. Remember
to turn-off the the LCD backlight to reduce the
battery current consumption.
-
the
"SENSOR"
mark on the bottom
of the back enclosure is not used in ED25G
(1)
(2)
(3)
(4)
(5)
(b)
(7)
(8)
RF
tGn30t
aeta
LEO rignal
level lable
Field strength/power density readout:
ED25G
use 8
high
brightness LED to indicate the
indications.
measured
power
density with 3 safety
@2007 CORNET Microsystems lnc., 1400 Coleman Ave #C28 Santa Clara
www.cornetmicLo-com
El*tEimog mctcr
fl.5+il
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tl.0
dEm
-l
r-l ..1 I I
JLITTT
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h'lf+H=45.3
LED
color
Power
level
RF
Power
density
LF
level Indication Aclion
RED3
-5
dBm
ltn
0.'18 w/m'?
30uT
lto
Italy RF safety standard
Caution!
RED2
-10
dBm 0.058 w/m'? 20uT
Swiss RF satety standard
{0 04w/m2)
Caution!
REDl
'15
dBm 0.018 w/m'? 1 0uT
Russian RF safety standard
Caution!
YELLOW3
-20
dBm
5.8 milm2 5uT safe
YELLOW2
-25
dBm
'1.8
mw/m?
2uI
safe
YELLOWl -30 dBm 0.58 milm'z 0.5uT safe
GREEN3
-35 dBm
0.18 mvm'? 0.2uT
WiFi Wireless LAN typically
in this ranoe
safe
GREEN2
-40
dtsm
down
0.06 mw/m'?
v,zu I
down
Some signal source around safe
CA 95050 USA Tel:
(408)9690205
ED25GV2.'1 12tO412008
*
Electromagnetic
wave field strength/power
density
reduces very
fast with distance
(distance
square),
keep a
good
distance from the
high frequency RF
signal source can
reduce the high
frequency
radiation effect.
Alumina foil or
window sun reflector
film
(silver
color)
can be
used as
a effective and
low cost shielding
material for most
of RF radiations.
-
ED25G is designed
for
quick
living environment
RF radiation
evaluation
and is for reference
use
only. Official
RF safety radiation
measurement
procedure
is complicate
and should
be
handled by trained
technical
person
with lab instruments.
Safety
range standard listed
here is
for reference only.
ED25G is not a
medical instrument,
Please do
not use it in medical,
legal or
other
related applications.
-
ED25G
is designed for
home and
personal
use, lt is not for
commercial
rental
pu]Fose.
The
European Community
provided
general guidelines
in its Council Recommendation
ofJuly
1999.1
ICNIRP
published
similarguidelines
in April 1998.'Table
I
gives
a sampling
ofthe international and
nationalfield-strengthlimitvaluesforthegeneralpublicandcontinuousexposure
(forReferenceonlyl)
9501\4hz
1850Mhz
lnternational
Council Recommendation
1 999/51
g/EC
42Vlm
// 75\l//m2l
59 V/m
lQ 25Wm2\
lnternational
ICNIRP Guidelines, April
1998
42Vlm
I I 7E\Al lm2\
59
V/m
Iq ?5W/m?1
Aushia
oNoRM S1120
49 V/m
/A 11M/im2\
61 V/m
l'l0M/im2\
Belgium
Belgisch Staatsblad
F.2001
-1
365
21vlm
(1.18Wm'?)
30 V/m
t2 ?1Wim21
Germany
26. Deutsche
Verordnung
42Vln
(4
75Wm'?)
59 Vim
/Q ?5\/V/m2\
Italy
Decreto n.381,
1998
6
V/m
(0.1Wm'?)
20
V/m
0
Vim
(0.1Wm'?)
20
V/m
The
Netherlands Health Council
51 V/m
/A Q?W/m2\
83 V/m
l'18Wm2\
Switzerland
Verordnung 1 999
4 V/m
I0 0dWm2\
6 V/m
/0 1W/m2\
United
States
IEEE C95.1
49 V/m
(6.33Wm')
68
V/m
(2Wlnz\
China
Draft: National
Quality
Technology
[,lnnifnrinn Rrrroerr
49 V/m
(6.33Wm'z)
61 V/m
/10W/m2\
Japan
Radio-Radiation
Protection Guidelines,
1 990
49
V/m
(6,33Wm'?)
61
V/m
(10Wm'z)
Specification:
Sensor type:
Frequency range:
RF Sensitivity:
RF Dynamic
range:
RF Peak
power
measurement
LF Sensitivity:
Display type:
Unit of
measurements:
LCD back
light:
Display of data:
Safety
standard
indication:
Battery
used:
Battery
life:
Electric
field sensor,
Magnetic
field sensor
RF:100MHz
to 3GHz
useful detection
range
LF:50H2 to 1SKHz
useful
detection
range
-55dBm to OdBm
(25mvlm
to 14.8v/m)
60 dB
:
1.5uw/m2
to 0.58w/m'
0.1uT to 60uT
(1mG
to 600mG)
digital LCD
display
dBm,
mw/m2, uT,
mG
1 5 seconds
auto-off
LCD 3 and
5 digit, 8
LED color segmeni,
Moving Histogram
of 30
readings
3 safety range
indication
by 3 Red
LED
9V alkaline battery,
(not
included)
>20
hours
(Gt
o
o
w
@2007 CORNET
l\ilicrosystems
lnc., 1400 Coleman
Ave #C28
Santa clara
ww.cornelmbrolqm
CA
95050 USA Tel:
(408)9690205
ED25GV2j
1210412008
Electrosnrog Meter
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