Lynx.GX Installation and Management
Grounding
WARNING!
This equipment is intended to be grounded. If you are not using the power supply provided by Proxim
Corporation, you must connect the grounding conductor of your power source to the grounding
terminal located on the units; or, connect an grounding conductor between the unit's grounding
terminals and your grounding point. For safe operation, always ensure that the units are grounded
properly per the following figure.
Be sure to:
▪
Use a common station ground for all equipment
▪
Ground the radio to the rack
▪
Ground the tower or mast properly
▪
Ground the transmission line properly.
STEP 7. ADJUST OUTPUT POWER
In certain cases, you may need to adjust the output power lower from the factory setting; for example, to:
▪
Meet any required EIRP (Effective Isotropic Radiated Power) limits
▪
Avoid exceeding the maximum far-end RSL of -20 dBm
▪
Meet in-bound RSL requirements for a hub site location
Note:
In certain countries, Effective Isotropic Radiated Power (EIRP) limits dictate the maximum output power
the radio can transmit, given transmission line loss and antenna gain. Consult with appropriate
government agencies or Proxim Corporation if there is any question regarding maximum output power
allowed.
Using the Web browser interface through the NMS1 or NMS2 port, you can adjust the output power from factory
settings. Select the
Sys Cfg
tab and choose from +5 to +25 dBm, in 1 dB steps, in the
Tx Power (dBm)
field.
Note:
For precise measurement of transmitter power, a calibrated RF power meter is recommended. This
power sensor can be connected directly to the output of the radio without exceeding the power rating.
With some power meters, it may be necessary to place a calibrated in-line fixed attenuator between the
radio antenna port and the power meter so as to not exceed the power meter's maximum input level.
Thruline power meters do not operate at Proxim radio RF frequencies and are not recommended.
If adjusting the output power to meet an EIRP limit, you must calculate the overall RF system gains and losses,
including feeder losses for the type of transmission line installed and the antenna gain.
Note:
For the US and Canada, there is no EIRP limit for fixed point-to-point applications of this product.
You can determine the radio transmit power for EIRP-limited installations using the following equation:
Tx Power (dBm) = EIRP Limit (dBm) + Transmission System Losses (dB) - Antenna Gain (dB)
Chapter 2. Installing the IDU and RFU
27
