User`s manual

100-M0056X2B 5 of 28
www.cobham.com/gms
If any of the above variables change, such as a higher gain antenna, less or more power output from the
transmitter, additional transmitters used, etc. then the safe distances would need to be recalculated. The
user can either refer to the equations predicting RF Fields as noted in the above section or call contact
GMS for advice at (760)-496-0055.
Table 1 – Safe Distances
Frequency = 1500 -
100,000 MHZ
MDTB Transmitter Power =
0.2W (+23 dBm)
Antenna Gain =
+2dbi
Occupational /controlled
exposure (5mW/cm
2
)
General population/uncontrolled
exposure (1mW/cm
2
)
Safe Distance Average
Time
Safe Distance Average Time
2.2 cm 6 minutes 5 cm 30 minutes
3. The transmitter, which can be operated in fixed or mobile applications, is rated at 0.2W (+23dBm) RF
power and is capable of harmful radiation if safe operating practices are not observed (see sections 1
& 2 above).
4. It should be noted that this device is an intentional radiator and that any changes or modifications not
expressly approved could void the user’s authority to operate the equipment.
5. Do not substitute any antenna for the one supplied or recommended by the manufacturer. The
installer is responsible for ensuring that the proper antenna is installed.
6. Antenna minimum safe operating distances should be observed as stated in section 2 above. It is the
responsibility of the qualified end-user of this intentional radiator to control the safe distances and
exposure limits to bystanders.
7. DC power (+12VDC) to the unit should never be applied until the antenna (or other suitable load) has
been attached to the device SMA RF output connector. Safe operating procedures must be observed
when unit is transmitting into an antenna (see sections 1 & 2 above).
8. Electro-Static Discharge (ESD) precautions should be observed as a safe practice.
9. The transmitter will generate considerable heat and is the responsibility of the end user to properly
heat sink the device before using.