B5U027115E
GEN2 M30 UHF Serial-J1939 Manual – Rev. 1.15
Page 50 of
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Other RF channels and single channel selection are present only for
test purposes and should not be used in normal operation!
Brazil regulations describe the radiating power limits in relation to isotropic
antenna and EIRP (Efficient Isotropic Radiating Power) is used as a measure.
The maximum RF output power is defined by the antenna gain, the half power
beam width and the cable attenuation on the reader - antenna connection. A
power of P
EIRP,max
= 36dBm EIRP subject to a maximum conducted power of
allowance of 30dBm at the antenna connector is allowed. The maximum
BLUEBOX
RF output power is defined as:
P
C,max
= P
EIRP,max
- G
IC
- 2.15 + 5.15 + C
L
Where:
P
C,max
Maximum RF output power in dBm
P
ERP,max
Maximum ERP power of the antenna in dBm
G
IC
Circular antenna gain in dBic
C
L
Cable loss in dB