Defibtech DDU-100 - Contacts

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DAC-510E-EN-BF
Separation Distances
TheDDU-100isintendedforuseinanelectromagneticenvironmentinwhichradiatedRF
disturbances are controlled. The customer or the user of the DDU-100 can help prevent
electromagneticinterferencebymaintainingaminimumdistancebetweenportableandmobileRF
communications equipment (transmitters) and the DDU-100 as recommended below, according to
the maximum output of the communications equipment.
Recommended separation distances between portable and mobile RF communications equipment
and the DDU-100
Separation distance according to frequency of transmitter (m)
Rated maximum
output power of
transmitter (W)
150 kHz to 80 MHz
outside ISM bands
d = 1.16√P
150 kHz to 80 MHz
inside ISM bands
d = 1.2√P
80 MHz to
800 MHz
d = 1.2√P
800 MHz to 2.5
GHz
d = 2.3√P
0.01 0.01 0.12 0.12 0.23
0.1 0.1 0.37 0.38 0.73
1 1 1. 17 1.20 2.30
10 10 3.69 3.79 7.27
100 100 11.67 12.00 23.00
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in
meters(m)canbedeterminedusingtheequationapplicabletothefrequencyofthetransmitter,wherePisthe
maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer.
Note1:As80MHzand800MHz,theseparationdistanceforthehigherfrequencyrangeapplies.
Note2:TheISM(industrial,scienticandmedical)bandsbetween150kHzand80MHzare6,765MHzto6,795
MHz;13,553MHzto13,567;26,957MHzto27,283MHz;and40,66MHzto40,70MHz.
Note 3: An additional factor of 10/3 is used in calculating the recommended separation distance for transmitters
intheISMfrequencybandsbetween150kHzand80MHzandinthefrequencyrange80MHzto2.5GHz
to decrease the likelihood that mobile/portable communications equipment could cause interference if it is
inadvertently brought into patient areas.
Note 4: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption
and reflection from structures, objects and people.