FreeWave Technologies
900 MHz High Throughput Wireless Ethernet Modem/
Terminal Server (model HTP-900XX) Installation Guide
v. 1.0c
LIG0007AA V1.0 RevC
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B. Transceiver Location
Placement of the FreeWave transceiver is likely to have a significant impact on its performance.
In general, the rule of thumb with FreeWave is that the higher the placement of the antenna the
better the communication link - height is everything! In practice you should also place the
transceiver away from computers, telephones, answering machines, and other similar equipment.
To improve the data link, FreeWave Technologies offers directional and omni-directional
antennas with cable lengths ranging from 3 to 200 feet.
When using an external antenna, placement of that antenna is critical to a solid data link. Other
antennas in close proximity are a potential source of interference; use the Radio Statistics or
Diagnostics software to help identify potential problems. It is also possible that slight adjustments
in antenna placement (as little as 2 feet) will solve noise problems. In extreme cases, such as
when the transceiver is located close to Pager or Cellular Telephone transmission towers,
FreeWave offers a band pass filter to reduce the out of band noise.
C. Diagnostic ports:
The HTP-900RE only uses the diagnostic port for the transmission of diagnostic data.
The radio
cannot be programmed through the diagnostic cable.
D. Power Connection
The HTP-900RE transceivers can be operated from any Class 2 power source, input voltages of
6V to 30V. The power source should be capable of providing at least 550 milliamps of continuous
current at 12V DC.
Transceiver is designed to operate in negative ground systems only.
