Trackit Mk3 User Manual
93
a
Field st rengt h from fixed t ransm it t ers, such as base st at ions for radio (cellular / cordless) telephones and land m obile r adios,
am at eur radio, AM and FM rad io br oadcast and TV broadcast cannot be predicted t heoret ically wit h accuracy. To assess t he
elect rom agnet ic environ m ent due t o fixed RF t ransm it t ers, an elect r om agnetic sit e sur vey should be consider ed. I f the meas-
ured field st r en gt h in t h e locat ion in wh ich the Trackit is used exceeds the applicable RF com pliance level above, the Track it
should be observed t o ver ify norm al operat ion . I f abnorm al perfor m ance is observed, addit ional measur es m ay be necessary,
such as r e- or ien t ing or relocat ing t he Trackit .
b
Over the frequency range 150 kHz to 80 MHz, field st rengt hs should be less t han 3 V/ m .
c
The im m unit y levels for conducted RF ar e for unscreened input electrode leads 1 m in length and w or se- case coupling, in-
cluding any resonances acr oss the fr equency band. The inter ference is less when the coupling plane of the int erfer ence
source is not in t he sam e p lane as t he electrode leads.
d
The im m un it y levels for radiated RF are for unscreened input elect r ode leads 1 m in length and w orse- case cou pling, in clu d-
ing any resonances across the frequency band. The int erference is less when t he polar isat ion plane of the int erference source
is n ot in the sam e plane as t he electrode leads.
The Trackit Mk3 is int ended for use in t he elect rom agnet ic environm ent in which radiated RF dis-
turbances are cont rolled. The custom er or t he user of the Trackit Mk3 can help prevent elect rom ag-
net ic int erference by m aint aining a m inim um dist ance between portable and m obile RF com m unica-
tions equipm ent (t ransm it t ers) and t he Trackit Mk3 as recom m ended below, according to the m axi-
m um output power of t he com m unications equipm ent.
Ra t e d m a x im um o u t -
put pow e r of t r a n s-
Sepa rat ion distance a ccording to fre que ncy o f tra n sm itt e r
m
W 150 kHz t o 80 MHz
d= 1.2 √P at 3 Vr m s
d= (3.5/ V1)√P ot her -
80 MHz t o 800 MHz
d= 3.5 √P at 3 V/ m
d= (3.5/ E1)√P ot her -
800 MHz to 2.5 GHz
d= 2.3 √P at 3 V/ m
d= (7/ E1) √P ot h erwise
For transm it t ers r at ed at a m axim um out put power not listed above, the recom m ended separ at ion dist ance d in m et ers (m )
can be est im at ed using t he equat ion applicable t o t he frequency of t he t ransm it t er, where P is t he m axim um output power
rat ing of the transm it t er in wat ts ( W) according t o t he transm it t er m anufact urer .
NOTE 1. At 80 MHz and 800 MHz, t he separat ion dist ance for the higher frequency range applies.
NOTE 2. These gu idelines m ay not apply in all sit uat ion s. Elect r om agn et ic pr opagat ion is affect ed by absor pt ion and reflect ion
fr om st r u ctures, object s and people.
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