User's Manual
Copyright Grektek Holdings, Inc. 2020   V2.4 July 22, 2020 
16 
Appendix I EMC Tables (continued) 
Guidance and manufacturer’s declaration – electromagnetic immunity 
The everbeat system is intended for use in an environment in which electrostatic and electromagnetic 
disturbances are controlled. The customer or the user of everbeat can help prevent electromagnetic 
interference by maintaining a minimum distance between portable and mobile RF communications 
equipment (transmitters) and everbeat as recommended below. 
Immunity Test 
IEC 60601 
Test Level 
Compliance 
level 
Electromagnetic environment – guidance 
Electrostatic 
Discharge Immunity 
(contact testing) 
IEC 61000-4-2 
+/- 2 kV, 
+/- 4 kV, 
+/- 6 kV, 
+/- 8 kV 
+/- 2 kV, 
+/- 4 kV, 
+/- 6 kV, 
+/- 8 kV 
The  customer  should  avoid  subjecting  the 
everbeat watch to repeated electrostatic shocks. 
The  everbeat  system  met  all  IEC  60601-4-2 
immunity requirements. 
Electrostatic 
Discharge Immunity 
(non-contact testing) 
IEC 61000-4-2 
+/- 2 kV, 
+/- 4 kV, 
+/- 8 kV, 
+/- 15 kV 
+/- 2 kV, 
+/- 4 kV, 
+/- 8 kV, 
+/- 15 kV 
The  customer  should  avoid  subjecting  the 
everbeat watch to repeated electrostatic shocks. 
The  everbeat  system  met  all  IEC  60601-4-2 
immunity requirements. 
Radiated RF & EMF 
Immunity 
IEC 61000-4-3 
10 V/m 
80–2,700 
MHz 
10 V/m 
All IEC 61000-4-3 requirements were met. Note 
that portable and mobile RF equipment should 
be  used  no  closer  to  everbeat  than  the 
recommended separation distance applicable to 
that equipment. This is a function of the power 
and frequency of the transmitter: 
 D = 1.2 * √P, where P is power in watts 
Separation distance (m) 
Max power 
(watts) 
Frequency < 
800 MHz 
Frequency >= 
800 MHz 
<=0.1 
0.38 meters 
0.73 meters 
1 
1.2 meters 
2.3 meters 
10 
3.8 meters 
7.3 meters 
100 
12 meters 
23 meters 
Power Frequency 
Magnetic Field 
Immunity 
IEC 61000-4-8 
50 Hz, 30 
Amps/m 
60 Hz, 30 
Amps/m 
Not 
applicable 
No special restrictions apply. 
All IEC 61000-4-8 requirements were met. 
NOTE: These guidelines may not apply in all situations. Electromagnetic propagation is affected 
by  absorption and  reflection  from structures,  objects and  people.  Field  strengths from  fixed 
transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios, 
amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicted theoretically 
with  accuracy.  If  the  everbeat  watch  is  not  operating  properly  when  near  a  source  of 
electromagnetic energy, move the everbeat watch away from the source, and confirm proper 
operation is restored. If not, contact Grektek for assistance via email at help@grektek.com. 










