CORNET® ED-88T Electrosmog meter user’s manual 7/22/2015
CORNET Microsystem Inc., ED-88 Electrosmog meter is a Tri-mode device for quick measurement of
both High frequency (RF) Electromagnetic wave field strength/power density level, Low frequency (LF)
Magnetic field level(Gauss, Tesla), and Low frequency Electric Field(V/m) 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/m² to 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). and E-field bandwidth of 50Hz-50KHz with sensitivity of 10v/m to 1000v/m, 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)
- Low frequency ELF Electric field measurement (E-field 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 ED88, 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 ED88; the LF sensor is located in the right
hand top side of the ED88, the E-field sensor is located in the middle top side of the ED88, 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, two LF modes, and E-field mode. The “Hold” button is
used to freeze the data reading of the ED88
(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
ED88 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) E-field mode: measured ELF electric field strength is shown on the digital LCD display with V/m.
(7) Histogram: previous 30 signal level readings are recorded and shown as moving graph
on the LCD display for RF, LF, and E-field modes. It can be used for finding direction of signal source
and recording bursts from digital RF signals such as signals from AC smart meter.
(8) Hold: HOLD button can be used to halt the data measurement of the ED88, a “HOLD” mark
will shown on the LCD screen to indicate the “Hold” condition. Push the “Hold” button again the
ED88 will exit from the “Hold” condition.
(9) MAX: Maximum measured data value since the last power-on is shown on the LCD display.
(10) 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.
(11) 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/m
2
) especially the modern digital RF burst signals.
The Audio sound will output from bottom hole of the enclosure, (do not plug the bottom hole)
(12) 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 1
st
button to move the cursor in the
Menu and use the 2
nd
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/m
2
, 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 8 trigger levels(0, -5,-10,-15,-20,-25,-30,-35dBm) can
Be selected to trigger the audio Alarm. *(Alarm function is used in RF mode only).
(e) RESET: reset to factory default (mw/m
2
,MAX_CLEAR= “on”, Alarm= “off”)
(f) SAVE: push the 2
nd
button to save the changes of setup to EEPROM memory. Do not
power off meter, Wait until save is done! (EXIT without SAVE to EEPROM the
changes will still functional, but it will lost if the meter is power off ).
(13) The LF30 mode: has high sensitivity (0.1mG-10mG), but with lower frequency range
(50Hz –1KHz) to reduce the high frequency noise. (The Histogram and LED
segment display can go up to 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.
(14) While in LF (magnetic/electric field measurement) or E-field mode, please hold the ED88 steady to
get the good stable reading, avoid fast moving of the ED88 to prevent the sudden change of the
reading caused by the Earth magnetic field or the induced electric field of nearby objects.
(15) AC Smart Meter radiates RF signal in short burst every few minutes, use MAX function and
Histogram function of ED88, and wait a few minutes to capture the RF signals from smart meter.
Field strength/power density readout:
ED88 use 8 high brightness LED to indicate the measured power density with 3 safety
indications.
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