Power requirements, Rf power output, Special rf power output requirements for the m6e-a – ThingMagic M6e User Manual
Page 29: Power settings for authorized antennas and cables
Power Requirements
A D I V I S I O N O F T R I M B L E
Hardware Overview
29
Power Requirements
RF Power Output
The M6e supports separate read and write power level which are command adjustable
via the MercuryAPI. Power levels must be between:
– Minimum RF Power = +5 dBm
– Maximum RF Power = +31.5 dBm (+/- 0.5 dB accuracy above +15 dBm)
Note
Maximum power may have to be reduced to meet regulatory limits, which
specify the combined effect of the module, antenna, cable and enclosure
shielding of the integrated product.
Note
FCC regulations limit the maximum RF Power to 30 dBm in NA Region. For
31.5 dBm operation in the NA Region the M6e-A must be purchased.
Special RF Power Output Requirements for the M6e-A
W A R N I N G !
Operation requires professional installation to correctly set the TX
power for the RF cable and antenna selected.
Power Settings for Authorized Antennas and Cables
The M6e-A has been designed to operate with the antennas listed in
list using the cables in the
list. For any combination of antenna
and cable the maximum RF power is determined from antenna gain (Max Linear Gain
value from antenna list) and antenna cable loss (Insertion Loss value from cable list)
using the formula:
Pmax = 36 dBm - Antenna Gain + Cable Loss
For example, for the Laird S8658WPL and the ThingMagic
CBL-P6
6ft cable the following
calculation can be performed:
Max linear antenna gain = 6 dBiL