CORNET ED-78S User Manual

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
0.5uw/m² to 1.8w/m² )
to 8GHz with high sensitivity(
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.
There are two push button below the power switch: "Mode" button and "Hold" button. "Mode"
(3)
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.
HOLD button can be used to halt the data measurement of the ED78, a "HOLD" mark
(7) Hold:
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.
Average: average signal value is displayed on the LCD with "A" mark. It can be used to
(9)
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
2
signals (down to 0.05uw/m ) especially the modern digital RF burst signals.
The Audio sound will output from bottom hole of the enclosure, (do not plug the bottom hole)
©2012 CORNET Microsystems Inc., 1400 Coleman Ave #C28 Santa Clara, CA 95050 USA Tel: (408)9690205
www.cornetmicro.com
ED78SV1.2
,and LF bandwidth of 50Hz to 10KHz (or 50Hz to
10/2/2013
can be enabled by push and hold the "HOLD" button then push the

(11) SysSetup Menu:

"Mode" button to get into the SysSetup menu, use the 1
nd
Menu and use the 2 button to enable/disable the function. In the SysSetup menu:
(a) EXIT: exit the SysSetup menu, return to normal mode
2
(b) RF level units select: mw/m , v/m, or dBm
(c) MAX_CLEAR bit: If the MAX_CLEAR is "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/m
nd
(f) WREEPROM: push the 2 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.
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 .
LED RF Power RF Power
color level density
-5 dBm
2
RED3 0.18 w/m
up
2
RED2 -10 dBm 0.058 w/m
2
RED1 -15 dBm 0.018 w/m
2
YELLOW3 -20 dBm 5.8 mw/m
2
YELLOW2 -25 dBm 1.8 mw/m
2
YELLOW1 -30 dBm 0.58 mw/m
2
GREEN3 -35 dBm 0.18 mw/m
-40 dBm
2
GREEN2 0.06 mw/m
down
st
button to move the cursor in the
2 ,MAX_CLEAR= "on", Alarm= "off")
(The Histogram and
LF600/LF30
Indication Action
level
30uT/3uT Italy RF safety
Caution!
2
up standard (0.1w/m )
Swiss RF safety
20uT/2uT Caution!
2
standard (0.04w/m )
Russian RF safety
10uT/1uT Caution!
2
standard (0.02w/m )
5uT/0.5uT safe
2uT/0.2uT safe
0.5uT/0.05uT safe
WiFi Wireless LAN
0.2uT/0.02uT safe
typically in this range
0.2uT/0.02uT Some signal source
safe
down around