User's Manual

pulsAR radio Operator’s Manual
3-10
Antenna installations must be engineered so that MPE is limited to f/1500 mW/ cm
2
(at 900 MHz) or
1 mW/cm
2
, (2.4 GHz) the more stringent limit for "uncontrolled environments". The table below
specifies the minimum distance that must be maintained between the antenna and any areas where
persons may have access, including rooftop walkways, sidewalks, as well as through windows and
other RF-transparent areas behind which persons may be located.
900 MHz - Minimum Distance calculation to
avoid Antenna Radiation Hazard (exposure of 0.610 mW/cm
2
)
Antenna Gain (dBi): 5 15
Max. Output Power
27 19
MPE safe distance (cm)
20 20
2.4 GHz - Minimum Distance calculation to
avoid Antenna Radiation Hazard (exposure of 1 mW/cm
2
)
Antenna Gain (dBi): 9 24
Max. Output Power
27 24
MPE safe distance (cm)
20 22
*NOTE: For fixed location transmitters, the minimum separation
distance is 2 m, even if calculations indicate a lower MPE distance.
For mobile transmitters the minimum is 20 cm (shown on the tables)
3.3 Upgrading the Firmware.
3.3.1 Description
The operational firmware for the pulsAR radio is stored in Flash PROM and can be easily updated.
The Flash PROM can hold multiple versions of the firmware simultaneously. The table below lists
some of the “File Utility” commands used to download and manage the various files stored in Flash
PROM. A more detailed explanation for each command can be found in section 4.