CORNET ED-78S User manual

©2012 CORNET Microsystems Inc., 1400 Coleman Ave #C28 Santa Clara, CA 95050 USA Tel: [phone]
www.cornetmicro.com ED78SV1.2 10/2/2013
LED
color
RF Power
level
RF Power
density
LF600/LF30
level
Indication
Action
RED3
-5 dBm
up
0.18 w/m2
30uT/3uT
up
Italy RF safety
standard (0.1w/m2)
Caution!
RED2
-10 dBm
0.058 w/m2
20uT/2uT
Swiss RF safety
standard (0.04w/m2)
Caution!
RED1
-15 dBm
0.018 w/m2
10uT/1uT
Russian RF safety
standard (0.02w/m2)
Caution!
YELLOW3
-20 dBm
5.8 mw/m2
5uT/0.5uT
safe
YELLOW2
-25 dBm
1.8 mw/m2
2uT/0.2uT
safe
YELLOW1
-30 dBm
0.58 mw/m2
0.5uT/0.05uT
safe
GREEN3
-35 dBm
0.18 mw/m2
0.2uT/0.02uT
WiFi Wireless LAN
typically in this range
safe
GREEN2
-40 dBm
down
0.06 mw/m2
0.2uT/0.02uT
down
Some signal source
around
safe
CORNET® ED-78S Electrosmog meter user’s manual
CORNET Microsystem Inc., ED-78 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 level(Gauss, Tesla) for living environments. It is an excellent device for
individual or company with Electromagnetic wave safety concerns. It has RF bandwidth of 100MHz
to 8GHz with high sensitivity(0.5uw/m²to 1.8w/m²),and LF bandwidth of 50Hz to 10KHz (or 50Hz to
1KHz) with sensitivity of 0.1uT to 60uT(1mG-600mG) or 0.01uT to 1uT(0.1mG to 10mG). with very fast
response time.
Applications:
- High frequency RF Electromagnetic wave field strength and power density measurement
- Low frequency LF Magnetic field measurement (Gauss meter function)
- Mobile phone base station antenna radiation power density measurement
- Wireless communications, Analog & Digital RF (AM/FM, TDMA, GSM, DECT, CDMA,3G,4G)
- 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, Electrical Utilities SMART METER radiation level
- 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:
(1) Put the 9V battery in the ED78, 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.
(2) The RF sensor is located in the left hand side of the ED78; the LF sensor is located in the right
hand top of the ED78, please do not cover the sensor area with hand or other objects.
(3) 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 two LF modes. The “Hold” button is used
to freeze the data reading of the ED78
(4) RF mode: measured RF field strength/power density is shown on the digital LCD display
(with dBm, v/m, or mw/m²). 8 LED lights with Red, Yellow, and Green color on the right hand
side of LCD window are used for quick RF signal level indications. 3 Red LEDs are used to
indicate the 3 safety ranges. The power level of each LED can be found in the table on the
ED78 front panel.
(5) LF mode: measured LF magnetic field strength is shown on the digital LCD display (with uT
and mGauss). Two LF modes can be selected by “Mode”button: (a) LF30mode (0.1mG-10mG)
and (b)LF600 mode (1mG-600mG). 8 color LED lights are also available to show the relative
strength of the magnetic field.
(6) Histogram: previous 30 signal level readings are recorded and shown as moving graph
on the LCD display for both RF and LF mode. It can be used for finding direction of signal souce
and reccording bursts from digital RF signals such as signals from AC smart meter.
(7) Hold: HOLD button can be used to halt the data measurement of the ED78, a “HOLD” mark
will shown on the LCD screen to indicate the “Hold” condition. Push the “Hold” button again the
ED78 will exit from the “Hold” condition.
(8) MAX: Maximum measured data value since the last power-on is shown on the LCD display.
(9) Average: average signal value is displayed on the LCD with “A” mark. It can be used to
estimate the duty cycle of the digital RF burst signals.
(10) Sound function & LCD backlight: go into the “Hold mode”first, then toggle the “Mode”button
in sequence to turn-on/off the LCD backlight and the Sound signature function, a “S” mark on
the LCD indicates the sound mode is on. The LCD,backlight is forced off when the Sound is ON
to reduce the battery current consumption. (Remember to turn-off the LCD backlight or the
sound function when it is not needed). Audio Sound can be used to detect very low level RF
signals (down to 0.05uw/m2) especially the modern digital RF burst signals.
The Audio sound will output from bottom hole of the enclosure, (do not plug the bottom hole)
(11) SysSetup Menu: can be enabled by push and hold the “HOLD” button then push the
“Mode” button to get into the SysSetup menu, use the 1st button to move the cursor in the
Menu and use the 2nd button to enable/disable the function. In the SysSetup menu:
(a) EXIT: exit the SysSetup menu, return to normal mode
(b) RF level units select: mw/m2, v/m, or dBm
(c) MAX_CLEAR bit: If the MAX_CLEARis “ON” the MAX value can be cleared by
toggling the “HOLD” button. If it is “OFF” the MAX value can be cleared only
by power off the meter.
(d) Alarm function: ON/OFF and one of the 5 trigger levels(0, -5,-10,-15,-20 dBm) can be
selected to trigger the audio Alarm. *(Alarm function is not used in LF modes).
(e) RESET: reset to factory default (mw/m2 ,MAX_CLEAR= “on”, Alarm= “off”)
(f) WREEPROM: push the 2nd button to save the changes of setup to EEPROM. Do not
power off meter, Wait until save is done! (EXIT without SAVE to EEPROM
the changes will still functional, but will lost if the meter is power off ).
(12) The LF30 mode: has high sensitivity (0.1mG-10mG), but with lower frequency range
(50Hz –1KHz) to reduce the high freqency noise. (The Histogram and
LED segment display can go upto 30mG)
The LF600 mode: with sensitivity(1mG-600mG), has higher frequency coverage
(50Hz -10KHz).
When measuring the high frequency digital/pulse type of signals,(such as switching power
supply) the LF30 mode might have lower reading than the LF600 mode, this is due to the
lower frequency coverage range of the LF30 mode.
(13) While in LF modes (magnetic field measurement), please hold the ED78 steady to get the
good stable reading, avoid fast moving of the ED78 to prevent the sudden change of the
reading caused by the Earth magnetic field.
(14) AC Smart Meter radiates RF signal in short burst every few minutes, use MAX function and
Histogram function of ED78, and wait a few minutes to capture the radiated RFsignals.
Field strength/power density readout:
ED78 use 8 high brightness LED to indicate the measured power density with 3 safety
indications.

©2012 CORNET Microsystems Inc., 1400 Coleman Ave #C28 Santa Clara, CA 95050 USA Tel: [phone]
www.cornetmicro.com ED78SV1.2 10/2/2013
NOTE:
Most high frequency RF antenna such as Mobile phone base station is vertical polarized
(in vertical direction), therefore while in RF mode, the ED78 is normally used in vertical
direction. For LF mode, the LF sensor is located in the top right hand of the ED78 and
the 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. ED78 can be used to find the location of signal
source.
Most of modern communication devices (Mobile phone, Wireless LAN, Wi-Fi, etc.,) use
digital RF burst signals. When measuring this type of 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 be stable. ED78
measures the peak power density of the signal with very fast sampling time. It is more
accurate than the needle style of readout which only shown the average value of signal
power most of the time.
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.
ED78 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 below is for reference only. ED78 is not a medical instrument, Please do not use
it in medical, legal or other related applications.
The “SENSOR” mark on the bottom of the back enclosure cover is not used in ED78
ED78 is designed for home and personal use, It is not for commercial rental purpose.
The audio sound output of the sound function is the demodulated RF signal, it is good for
AM and modern digital RF signals (pulse/burst ) detection, it is not for FM or constant
amplitude RF signals or LF modes. it is an excellent tool for RF signal type indication.
(different RF signal such as Wifi, GSM, DECT, ….etc.,all has different sound frequency
signature of the demodulated RF signal) and for very low level signal dectection.
Specification
Sensor type: Electric field sensor and Magnetic field sensor
Frequency range & Sensitivity: RF: 100MHz to 8GHz
(-60dBm to +5dBm),(0.5uw/m2 to 1.8w/m2),
(14mv/m to 26.2v/m)
LF1: 50Hz to 10KHz (0.1uT to 60uT)/(1mG to 600mG)
LF2: 50Hz to 1KHz (0.01uT to 1uT)/(0.1mG to 10mG)
RF Peak power measurement: 0.5uw/m²to 1.8w/m²
Display type: digital LCD graphic display
Unit of measurements: dBm, mw/m², v/m, uT, mG
LCD back light: 15 seconds auto-off and manual on/off control
Display of data: LCD 4 and 5 digit, 8 LED color segment,
Moving Histogram(level/time) of previous 30 recorded
data, Analog segment bar
Data update rate: Sampling rate: 3500/sec. Display update rate: 2/sec.
Error rate: +/- 3.5dBm
Functions: Hold, Max, Average, Sound signature, Alarm,
Sound & Alarm: Audio Sound ON/OFF control, programmable Alarm
triggering level
Safety standard indication: 3 safety range indication by 3 Red LED
Battery used: 9V alkaline battery, (not included)
Battery life: >20 hours
The European Community provided general guidelines in its Council
Recommendation of July 1999.1 ICNIRP published similar guidelines in
April 1998.2 Table I gives a sampling of the international and national field-
strength limit values for the general public and continuous exposure (for
Reference only !)
950Mhz 1850Mhz
1W/m2 = 1000mW/m2, 1mW/m2 = 1000uW/m2 = 0.1uW/cm2
1uW/m2 =0.001mW/m2 , 1uT = 10mG
International
Council Recommendation 1999/519/EC
42 V/m
(4.75W/m2)
59 V/m
(9.25W/m2)
International
ICNIRP Guidelines, April 1998
42 V/m
(4.75W/m2)
59 V/m
(9.25W/m2)
Austria
Ö NORM S1120
49 V/m
(6.33W/m2)
61 V/m
(10W/m2)
Belgium
Belgisch Staatsblad F.2001-1365
21 V/m
(1.18W/m2)
30 V/m
(2.31W/m2)
Germany
26. Deutsche Verordnung
42 V/m
(4.75W/m2)
59 V/m
(9.25W/m2)
Italy
Decreto n. 381, 1998
6 V/m
(0.1W/m2)
20 V/m
(1W/m2)
6 V/m
(0.1W/m2)
20 V/m
(1W/m2)
The Netherlands
Health Council
51 V/m
(6.92W/m2)
83 V/m
(18W/m2)
Switzerland
Verordnung 1999
4 V/m
(0.04W/m2)
6 V/m
(0.1W/m2)
United States
IEEE C95.1
49 V/m
(6.33W/m2)
68 V/m
(12W/m2)
China
Draft: National Quality Technology
Monitoring Bureau
49 V/m
(6.33W/m2)
61 V/m
(10W/m2)
Japan
Radio-Radiation Protection Guidelines,
1990
49 V/m
(6.33W/m2)
61 V/m
(10W/m2)

©2012 CORNET Microsystems Inc., 1400 Coleman Ave #C28 Santa Clara, CA 95050 USA Tel: [phone]
www.cornetmicro.com ED78SV1.2 10/2/2013